• How many different unit fractions are lessorequal than all unit fractio

    From WM@21:1/5 to All on Mon Sep 2 19:07:58 2024
    How many different unit fractions are lessorequal than all unit
    fractions? The correct answer is: one unit fraction. If you claim more
    than one (two or three or infintely many), then these more must be
    equal. But different unit fractions are different and not equal to each
    other.

    Another answer is that no unit fraction is lessorequal than all unit
    fractions. That means the function NUF(x)
    Number of UnitFractions between 0 and x > 0
    with NUF(0) = 0 will never increase but stay at 0. There are no unit
    fractions existing at all.

    Therefore there is only the one correct answer given above.

    Regards, WM

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  • From Richard Damon@21:1/5 to All on Mon Sep 2 13:19:33 2024
    On 9/2/24 1:07 PM, WM wrote:
    How many different unit fractions are lessorequal than all unit
    fractions? The correct answer is: one unit fraction. If you claim more
    than one (two or three or infintely many), then these more must be
    equal. But different unit fractions are different and not equal to each other.

    Another answer is that no unit fraction is lessorequal than all unit fractions. That means the function NUF(x)
    Number of UnitFractions between 0 and x > 0
    with NUF(0) = 0 will never increase but stay at 0. There are no unit fractions existing at all.

    Therefore there is only the one correct answer given above.

    Regards, WM


    Nope, because there does not exist AHY unit fraction that is less than
    or equal to ALL Unit fractions, as any unit fraction you might claim to
    be that one has a unit fraction smaller than itself, so it wasn't the
    smallest.

    The problem with your NUF, is that it is trying to count something from
    and uncountable end, one that doesn't actually have an end.

    Thus, if we try to find a value of y such that y = NUF(x) where x is > 0
    but also a finite value, we find that such NUF doesn't exist, because it
    has an essentially inconsistant definition.

    Your logic that tries to make it valid has just blown up your mind into smithereens.

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  • From WM@21:1/5 to Richard Damon on Mon Sep 2 22:37:02 2024
    On 02.09.2024 19:19, Richard Damon wrote:
    On 9/2/24 1:07 PM, WM wrote:
    How many different unit fractions are lessorequal than all unit
    fractions? The correct answer is: one unit fraction. If you claim more
    than one (two or three or infintely many), then these more must be
    equal. But different unit fractions are different and not equal to
    each other.

    Another answer is that no unit fraction is lessorequal than all unit
    fractions. That means the function NUF(x)
    Number of UnitFractions between 0 and x > 0
    with NUF(0) = 0 will never increase but stay at 0. There are no unit
    fractions existing at all.

    Therefore there is only the one correct answer given above.

    Nope, because there does not exist AHY unit fraction that is less than
    or equal to ALL Unit fractions,

    Impossible because then NUF will never increase. Then there are no unit fractions.

    as any unit fraction you might claim to
    be that one has a unit fraction smaller than itself, so it wasn't the smallest.

    Your argument stems from visible unit fractions but becomes invalid in
    the dark domain.

    The problem with your NUF, is that it is trying to count something from
    and uncountable end, one that doesn't actually have an end.

    The unit fractions end before zero.

    Regards, WM

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  • From Richard Damon@21:1/5 to All on Mon Sep 2 17:43:45 2024
    On 9/2/24 4:37 PM, WM wrote:
    On 02.09.2024 19:19, Richard Damon wrote:
    On 9/2/24 1:07 PM, WM wrote:
    How many different unit fractions are lessorequal than all unit
    fractions? The correct answer is: one unit fraction. If you claim
    more than one (two or three or infintely many), then these more must
    be equal. But different unit fractions are different and not equal to
    each other.

    Another answer is that no unit fraction is lessorequal than all unit
    fractions. That means the function NUF(x)
    Number of UnitFractions between 0 and x > 0
    with NUF(0) = 0 will never increase but stay at 0. There are no unit
    fractions existing at all.

    Therefore there is only the one correct answer given above.

    Nope, because there does not exist AHY unit fraction that is less than
    or equal to ALL Unit fractions,

    Impossible because then NUF will never increase. Then there are no unit fractions.

    Which just shows the error in the "definition" of NUF.


    as any unit fraction you might claim to be that one has a unit
    fraction smaller than itself, so it wasn't the smallest.

    Your argument stems from visible unit fractions but becomes invalid in
    the dark domain.

    But all the unit fractions are visible. You agreed to that you self as
    you said if n is visible, so will be n+1.

    Thus, there is no smallest visible unit fraction as there can't be a
    last one.


    The problem with your NUF, is that it is trying to count something
    from and uncountable end, one that doesn't actually have an end.

    The unit fractions end before zero.

    No, they don't end, they have a bound that is outside of themselves, but
    have no final member.


    Regards, WM


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  • From Jim Burns@21:1/5 to All on Tue Sep 3 00:25:41 2024
    On 9/2/2024 4:37 PM, WM wrote:
    On 02.09.2024 19:19, Richard Damon wrote:

    as any unit fraction you might claim to be
    that one has a unit fraction smaller than itself,
    so it wasn't the smallest.

    Your argument stems from visible unit fractions
    but becomes invalid in the dark domain.

    The darkᵂᴹ domain
    between 0 and visibleᵂᴹ unit.fractions
    is empty.

    Each positive point is undercut by
    visibleᵂᴹ unit.fractions, and thus
    each positive point is not darkᵂᴹ.

    ⎛ Assume otherwise.
    ⎜ Assume x > 0 is not.undercut by
    ⎜ visibleᵂᴹ unit.fractions.

    ⎜ β ≥ x > 0 is the least.upper.bound of
    ⎜ points.not.undercut by visibleᵂᴹ unit.fractions.

    ⎜ ½⋅β is not.undercut.

    ⎜ 2⋅β is undercut.
    ⎜ visibleᵂᴹ ⅟k < 2⋅β
    ⎜ visibleᵂᴹ ¼⋅⅟k < ½⋅β
    ⎜ ½⋅β is undercut.

    ⎝ Contradiction.

    The problem with your NUF, is that
    it is trying to count something
    from and uncountable end,
    one that doesn't actually have an end.

    The unit fractions end before zero.

    The lower.end of unit fractions
    is not a visibleᵂᴹ unit.fraction ⅟k > ⅟(k+1)
    is not a darkᵂᴹ unit fraction (not.existing)
    is not anything not a unit.fraction.

    The lower.end of unit fractions
    is not.

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  • From WM@21:1/5 to Richard Damon on Tue Sep 3 12:17:10 2024
    On 02.09.2024 23:43, Richard Damon wrote:
    On 9/2/24 4:37 PM, WM wrote:

    Which just shows the error in the "definition" of NUF.

    There is no error.


    as any unit fraction you might claim to be that one has a unit
    fraction smaller than itself, so it wasn't the smallest.

    Your argument stems from visible unit fractions but becomes invalid in
    the dark domain.

    But all the unit fractions are visible.

    All which you can see, yes. But there are many which you cannot see.

    Thus, there is no smallest visible unit fraction as there can't be a
    last one.

    Unit fractions are fixed points on the real line which differ from each
    other. Therefore there is a first one. It cannot be seen. Therefore
    there are dark unit fractions.

    Regards, WM

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  • From WM@21:1/5 to Jim Burns on Tue Sep 3 12:22:19 2024
    On 03.09.2024 06:25, Jim Burns wrote:
    On 9/2/2024 4:37 PM, WM wrote:
    On 02.09.2024 19:19, Richard Damon wrote:

    as any unit fraction you might claim to be
    that one has a unit fraction smaller than itself,
    so it wasn't the smallest.

    Your argument stems from visible unit fractions
    but becomes invalid in the dark domain.

    The darkᵂᴹ domain
     between 0 and visibleᵂᴹ unit.fractions
    is empty.

    Then you could see the smallest unit fraction. Remember that they are
    fixed points with non-empty gaps on the real line. Hence there is a
    first one.

    Each positive point is undercut by
    visibleᵂᴹ unit.fractions,

    No. Only each visible positive point is undercut by
    visible unit.fractions.

    ⎛ Assume otherwise.

    Assume that there is no first unit fraction. The alternative would be
    more first unit fractions, i.e., real nonsense.

    The unit fractions end before zero.

    The lower.end of unit fractions
    is not.

    Then NUF(x) would remain at 0. It does not.

    Regards, WM




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  • From WM@21:1/5 to Richard Damon on Tue Sep 3 13:56:57 2024
    On 03.09.2024 13:29, Richard Damon wrote:
    On 9/3/24 6:17 AM, WM wrote:
    On 02.09.2024 23:43, Richard Damon wrote:
    On 9/2/24 4:37 PM, WM wrote:

    Which just shows the error in the "definition" of NUF.

    There is no error.

    Sure there is,

    What is it? Note that better mathematicians than you have accepted the definition of NUF(x).

    Unit fractions are fixed points on the real line which differ from
    each other. Therefore there is a first one. It cannot be seen.
    Therefore there are dark unit fractions.

    That is not correct logic.

    What?
    Unit fractions are fixed points on the real line?
    They differ from eaxh other?

    Regards, WM
    each other

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  • From Richard Damon@21:1/5 to All on Tue Sep 3 07:29:40 2024
    On 9/3/24 6:17 AM, WM wrote:
    On 02.09.2024 23:43, Richard Damon wrote:
    On 9/2/24 4:37 PM, WM wrote:

    Which just shows the error in the "definition" of NUF.

    There is no error.

    Sure there is, that's why you can con



    as any unit fraction you might claim to be that one has a unit
    fraction smaller than itself, so it wasn't the smallest.

    Your argument stems from visible unit fractions but becomes invalid
    in the dark domain.

    But all the unit fractions are visible.

    All which you can see, yes. But there are many which you cannot see.

    Thus, there is no smallest visible unit fraction as there can't be a
    last one.

    Unit fractions are fixed points on the real line which differ from each other. Therefore there is a first one. It cannot be seen. Therefore
    there are dark unit fractions.

    That is not correct logic.

    There are an INFINITE number of them, so there doesn't need to be a one
    closest to zero.

    You just don't understand, and your logic doesn't support, the concept
    of an unbounded infinite class.

    Sorry, you are just proving yourself too STUPID to understand what you
    are trying to talk about, and are using inadequacy logic that has blown
    itself, and apparently your brain, to smithereens of inconsistency.


    Regards, WM


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  • From Jim Burns@21:1/5 to All on Tue Sep 3 13:50:11 2024
    On 9/3/2024 6:22 AM, WM wrote:
    On 03.09.2024 06:25, Jim Burns wrote:
    On 9/2/2024 4:37 PM, WM wrote:
    On 02.09.2024 19:19, Richard Damon wrote:

    as any unit fraction you might claim to be
    that one has a unit fraction smaller than itself,
    so it wasn't the smallest.

    Your argument stems from visible unit fractions
    but becomes invalid in the dark domain.

    The darkᵂᴹ domain
      between 0 and visibleᵂᴹ unit.fractions
    is empty.

    Then you could see the smallest unit fraction.

    If the smallest unit.fraction existed,
    you could see it positive and undercut by
    a visibleᵂᴹ smaller.than.smallest unit.fraction.

    But you can't see that.
    The smallest unit fraction doesn't exist.

    If the darkᵂᴹ domain held a positive lower.bound of
    visibleᵂᴹ unit fractions,
    you couldn't see it , but it would be undercut by
    lower.than.lower.bound visibleᵂᴹ unit fractions.

    But that can't be.
    The darkᵂᴹ domain is empty.

    Remember that they are fixed points with
    non-empty gaps on the real line.

    Around each visibleᵂᴹ ⅟k, mark a gap of size g/2ᵏ

    gap size g/2ᵏ decreases exponentially faster than
    gap separation ⅟k-⅟(k+1)
    If gaps do not overlap initially,
    they do not overlap ever.

    Gₖ = g/2+g/4+g/8+...+g/2ᵏ

    ½⋅(g+Gₖ) =
    ½⋅(g+g/2+g/4+g/8+...+g/2ᵏ) =
    g/2+g/4+g/8+...+g/2ᵏ+g/2ᵏ⁺¹ =
    Gₖ+g/2ᵏ⁺¹

    ½⋅(g+Gₖ) = Gₖ+g/2ᵏ⁺¹
    Gₖ = g-g/2ᵏ < g

    For visibleᵂᴹ unit.fraction ⅟j, let g = ½⋅⅟j²
    All the visibleᵂᴹ unit.fractions ⅟ℕᴰᴱꟳ and their gaps
    fit between 0 and ⅟j

    Hence there is a first one.

    For each visibleᵂᴹ unit fraction ⅟k
    ⅟(k+1) disproves by counter.example that ⅟k is first.

    A darkᵂᴹ unit.fraction is between
    0 and the visibleᵂᴹ unit fractions.

    A darkᵂᴹ unit.fraction implies that
    ½⋅glb.⅟ℕᴰᴱꟳ both is and is not undercut by
    visibleᵂᴹ unit.fractions.

    Darkᵂᴹ unit fractions do not exist.

    A first unit fraction does not exist.

    Each positive point is undercut by
    visibleᵂᴹ unit.fractions,

    No.
    Only each visible positive point is undercut by
    visible unit.fractions.

    Each darkᵂᴹ positive point is positive.

    Each darkᵂᴹ positive point is
    a positive lower.bound of visibleᵂᴹ unit.fractions.

    Each (hypothetical) darkᵂᴹ positive point undercuts
    the (hypothetical) positive greatest.lower.bound β of
    visibleᵂᴹ unit.fractions.

    2⋅β > β (hypothetically)
    2⋅β is undercut by visibleᵂᴹ ⅟k
    ½⋅β is undercut by visibleᵂᴹ ¼⋅⅟k

    However,
    ½⋅β < β (hypothetically)
    ½⋅β is NOT undercut.

    A darkᵂᴹ positive point forces contradiction.
    Therefore,
    Only visibleᵂᴹ positive points exist.

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  • From Richard Damon@21:1/5 to All on Tue Sep 3 23:05:55 2024
    On 9/3/24 7:56 AM, WM wrote:
    On 03.09.2024 13:29, Richard Damon wrote:
    On 9/3/24 6:17 AM, WM wrote:
    On 02.09.2024 23:43, Richard Damon wrote:
    On 9/2/24 4:37 PM, WM wrote:

    Which just shows the error in the "definition" of NUF.

    There is no error.

    Sure there is,

    What is it? Note that better mathematicians than you have accepted the definition of NUF(x).

    Unit fractions are fixed points on the real line which differ from
    each other. Therefore there is a first one. It cannot be seen.
    Therefore there are dark unit fractions.

    That is not correct logic.

    What?
    Unit fractions are fixed points on the real line?
    They differ from eaxh other?

    Regards, WM
    each other


    And get as close together near zero as we might desire, and thus we can
    get an infinite number of them below any given one.

    Sorry, your finite logic just blows up trying to handle the infinite.

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  • From Jim Burns@21:1/5 to All on Wed Sep 4 14:08:32 2024
    On 9/2/2024 1:07 PM, WM wrote:

    How many different unit fractions are
    lessorequal than all unit fractions?
    The correct answer is: one unit fraction.

    Another answer is that
    no unit fraction is
    lessorequal than all unit fractions.

    Yes:
    for each ⅟j ∈ ⅟ℕᴰᴱꟳ
    there is next.smaller ⅟j′ ∈ ⅟ℕᴰᴱꟳ:
    ⎛ ⅟j′ = ⅟(j+1) < ⅟j
    ⎝ ¬∃⅟hₓ ∈ ⅟ℕᴰᴱꟳ: ⅟j′ < ⅟hₓ < ⅟j

    Also:
    for each non.max.⅟ℕᴰᴱꟳ ⅟j ∈ ⅟ℕᴰᴱꟳ
    there is next.larger ⅟j″ ∈ ⅟ℕᴰᴱꟳ:
    ⎛ ⅟j″ = ⅟(j-1) > ⅟j
    ⎝ ¬∃⅟hₓ ∈ ⅟ℕᴰᴱꟳ: ⅟j″ > ⅟hₓ > ⅟j
    ⇐ ∃⅟i ∈ ⅟ℕᴰᴱꟳ: ⅟i > ⅟j

    for each non.{} S ⊆ ⅟ℕᴰᴱꟳ
    there is max.S ⅟j ∈ S:
    S ∋ ⅟j ≥ᵉᵃᶜʰ S

    for each bounded.in.⅟ℕᴰᴱꟳ non.{} S ⊆ ⅟ℕᴰᴱꟳ
    there is min.S ⅟j ∈ S:
    S ∋ ⅟j ≤ᵉᵃᶜʰ S
    ⇐ ∃⅟k ∈ ⅟ℕᴰᴱꟳ: ⅟k ≤ᵉᵃᶜʰ S

    0 ∉ ⅟ℕᴰᴱꟳ

    Another answer is that
    no unit fraction is
    lessorequal than all unit fractions.
    That means the function NUF(x)
    Number of UnitFractions between 0 and x > 0
    with NUF(0) = 0 will never increase but stay at 0.

    That means that
    the unit.fractions between 0 and x > 0
    will never be fewer than ℵ₀.many
    well.ordered, stepping.up.and.down.except.max
    visibleᵂᴹ unit.fractions.

    ⎛ In a finite non.{} ordered set,
    ⎝ each subset is 2.ended.

    That means that
    the 1.ended unit.fractions between 0 and x > 0
    are not finitely.many.

    That means the function NUF(x)
    Number of UnitFractions between 0 and x > 0
    with NUF(0) = 0 will never increase but stay at 0.
    There are no unit fractions existing at all.

    x > ⅟⌊1+⅟x⌋ > 0

    The unit.fractions are 1.ended.
    There is no first unit.fraction.

    Therefore
    there is only the one correct answer given above.

    Logicᵂᴹ which leads to the claim that
    ⎛ half the greatest.lower.bound of visibleᵂᴹ unit.fractions
    ⎜ is undercut by visibleᵂᴹ unit.fractions and
    ⎝ is NOT undercut by visibleᵂᴹ unit.fractions
    is broken logicᵂᴹ.

    Not all sets are finite.
    Not all sets have each non.{} subset 2.ended.

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  • From WM@21:1/5 to Jim Burns on Wed Sep 4 21:10:46 2024
    On 03.09.2024 19:50, Jim Burns wrote:
    On 9/3/2024 6:22 AM, WM wrote:

    If the smallest unit.fraction existed,
    you could see it
    No, that is impossible by your argument:

    positive and undercut by
    a visibleᵂᴹ smaller.than.smallest unit.fraction.

    But you can't see that.
    The smallest unit fraction doesn't exist.
    Either ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 is wrong or Peano is wrong.
    Peano has been generalized from the small natural numbers.
    "All different unit fractions are different" however is a basic truth. Therefore I accept the latter.

    Regards, WM

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  • From WM@21:1/5 to Jim Burns on Wed Sep 4 22:23:04 2024
    On 04.09.2024 20:08, Jim Burns wrote:
    On 9/2/2024 1:07 PM, WM wrote:

    How many different unit fractions are
    lessorequal than all unit fractions?
    The correct answer is: one unit fraction.

    Another answer is that
    no unit fraction is
    lessorequal than all unit fractions.

    Then NUF(x) will never leave the value 0.
    Not all sets are finite.

    But all different unit fractions are different, i.e., they sit at
    different positive x. Therefore only one can sit closest to zero.

    Regards, WM

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  • From Jim Burns@21:1/5 to All on Wed Sep 4 16:52:43 2024
    On 9/4/2024 3:10 PM, WM wrote:
    On 03.09.2024 19:50, Jim Burns wrote:

    If the smallest unit.fraction existed,
    you could see it

    No, that is impossible by your argument:

    My argument is that
    an existing smallest unit.fraction requires impossibles.

    Therefore, an existing smallest unit.fraction is not.

    positive and undercut by
    a visibleᵂᴹ smaller.than.smallest unit.fraction.

    But you can't see that.
    The smallest unit fraction doesn't exist.

    Either
    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0
    is wrong or Peano is wrong.

    ...or natural numbers aren't what you think they are.

    Peano has been generalized from
    the small natural numbers.

    Peano describes the finite natural numbers.
    'Finite' doesn't need to be 'small'.

    ⎛ The natural numbers are well.ordered.
    ⎜ Each non.0 natural number and each non.0 before it
    ⎜ has a predecessor.natural,
    ⎝ Each natural number has a successor.natural.

    However large 𝔊 is,
    if
    ⎛ [0…𝔊]ᵒʳᵈ is well.ordered
    ⎜ ∀k ∈ (0…𝔊]ᵒʳᵈ: [0…𝔊)ᵒʳᵈ ∋ k-1
    ⎝ ∀j ∈ [0…𝔊]ᵒʳᵈ: (0…𝔊+1]ᵒʳᵈ ∋ j+1
    then
    𝔊 is one of what Peano describes.

    Moreover,
    if
    [0…ω)ᵒʳᵈ ∋ ω-1
    then
    ⎛ [0…ω]ᵒʳᵈ is well.ordered
    ⎜ ∀k ∈ (0…ω]ᵒʳᵈ: [0…ω)ᵒʳᵈ ∋ k-1
    ⎝ ∀j ∈ [0…ω]ᵒʳᵈ: (0…ω+1]ᵒʳᵈ ∋ j+1
    and
    ω is one of what Peano describes,
    which is incorrect --
    ω is _first.after_ what Peano describes.

    ω is infinite.
    𝔊 is finite.
    'Infinite and 'finite' don't mean 'large' and 'small'.

    "All different unit fractions are different"
    however is a basic truth.
    Therefore I accept the latter.

    You also accept quantifier shifts,
    which breaks your logicᵂᴹ.
    Quantifier shifts are unreliable.

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  • From Jim Burns@21:1/5 to All on Wed Sep 4 17:26:45 2024
    On 9/4/2024 4:23 PM, WM wrote:
    On 04.09.2024 20:08, Jim Burns wrote:
    On 9/2/2024 1:07 PM, WM wrote:

    How many different unit fractions are
    lessorequal than all unit fractions?
    The correct answer is: one unit fraction.

    Another answer is that
    no unit fraction is
    lessorequal than all unit fractions.

    Then NUF(x) will never leave the value 0.

    Not all sets are finite.

    But all different unit fractions are different,
    i.e., they sit at different positive x.

    Around each of ℵ₀.many visibleᵂᴹ ⅟k,
    mark a gap of length g/2ᵏ

    Gap length g/2ᵏ decreases exponentially faster than
    gap distance ⅟k-⅟(k+1)
    If gaps do not overlap initially,
    then they do not overlap ever.

    ⎛ Gₖ = g/2+g/4+g/8+...+g/2ᵏ

    ⎜ ½⋅(g+Gₖ) =
    ⎜ ½⋅(g+g/2+g/4+g/8+...+g/2ᵏ) =
    ⎜ g/2+g/4+g/8+...+g/2ᵏ+g/2ᵏ⁺¹ =
    ⎜ Gₖ+g/2ᵏ⁺¹

    ⎜ ½⋅(g+Gₖ) = Gₖ+g/2ᵏ⁺¹
    ⎝ Gₖ = g-g/2ᵏ < g

    For visibleᵂᴹ unit.fraction ⅟j, let g = ½⋅⅟j²
    ℵ₀.many visibleᵂᴹ unit.fractions ⅟ℕᴰᴱꟳ and the gaps g/2ᵏ fit between 0 and ⅟j

    But all different unit fractions are different,
    i.e., they sit at different positive x.

    Yes,
    each two sit at two points,
    because ∀n ∈ ℕ: ⅟n-⅟(n+1) > 0

    Therefore only one can sit closest to zero.

    No,
    each sits not.closest to zero,
    because ∀n ∈ ℕ: ⅟n-⅟(n+1) > 0

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Wed Sep 4 20:38:57 2024
    On 9/4/24 4:23 PM, WM wrote:
    On 04.09.2024 20:08, Jim Burns wrote:
    On 9/2/2024 1:07 PM, WM wrote:

    How many different unit fractions are
    lessorequal than all unit fractions?
    The correct answer is: one unit fraction.

    Another answer is that
    no unit fraction is
    lessorequal than all unit fractions.

    Then NUF(x) will never leave the value 0.
    Not all sets are finite.

    But all different unit fractions are different, i.e., they sit at
    different positive x. Therefore only one can sit closest to zero.

    Regards, WM


    nope, NONE sit closest to zero, as there are always more that are closer.

    That is what UNBOUNDED means.

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Wed Sep 4 20:35:53 2024
    On 9/4/24 3:10 PM, WM wrote:
    On 03.09.2024 19:50, Jim Burns wrote:
    On 9/3/2024 6:22 AM, WM wrote:

    If the smallest unit.fraction existed,
    you could see it
    No, that is impossible by your argument:

    positive and undercut by
    a visibleᵂᴹ smaller.than.smallest unit.fraction.

    But you can't see that.
    The smallest unit fraction doesn't exist.
    Either ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 is wrong or Peano is wrong.

    Why?

    Peano has been generalized from the small natural numbers.
    "All different unit fractions are different" however is a basic truth. Therefore I accept the latter.

    Regards, WM

    And all ARE different as there is always a space between them, but that
    space gets arbitrary small (but still finite.)

    You just can't seem to handle the concept of ARBITRARILY small, and
    think you can somehow "name" that.

    That naming is a property of FINITE sets, not unbounded sets.

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to All on Thu Sep 5 13:53:13 2024
    Le 04/09/2024 à 22:52, Jim Burns a écrit :
    On 9/4/2024 3:10 PM, WM wrote:

    Either
    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0
    is wrong or Peano is wrong.

    ...or natural numbers aren't what you think they are.

    That is possible. My arguments hold only under the premise of actual
    infinity showing that Hilbert's hotel is nonsense because the set of
    natural numbers cannot be extended. If all rooms are occupied than no
    guest can leave his room for a not occupied room. (When I was in USA or
    the first time, I asked in a Hilton whether they had free rooms. They
    laughed.)

    Peano has been generalized from
    the small natural numbers.

    Peano describes the finite natural numbers.
    'Finite' doesn't need to be 'small'.

    Finite is much larger than Peano or you could/can imagine.

    "All different unit fractions are different"
    however is a basic truth.
    Therefore I accept the latter.

    You also accept quantifier shifts,
    which breaks your logicᵂᴹ.
    Quantifier shifts are unreliable.

    Do you believe that it needs a shift to state:
    All different unit fractions are different.
    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0
    I can see no shift.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to All on Thu Sep 5 13:59:30 2024
    Le 04/09/2024 à 23:26, Jim Burns a écrit :
    On 9/4/2024 4:23 PM, WM wrote:

    But all different unit fractions are different,
    i.e., they sit at different positive x.

    Yes,
    each two sit at two points,
    because ∀n ∈ ℕ: ⅟n-⅟(n+1) > 0

    Therefore only one can sit closest to zero.

    No,
    each sits not.closest to zero,
    because ∀n ∈ ℕ: ⅟n-⅟(n+1) > 0

    NUF(x) increases from 0 to more. It cannot increase to 2 or more before
    having accepted 1. It cannot increase to ℵo without having accepted 1,
    2, 3, ...

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to All on Thu Sep 5 14:03:52 2024
    Le 05/09/2024 à 02:35, Richard Damon a écrit :
    On 9/4/24 3:10 PM, WM wrote:

    Either ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 is wrong or Peano is wrong.

    Why?

    Peano has been generalized from the small natural numbers.
    "All different unit fractions are different" however is a basic truth.
    Therefore I accept the latter.

    And all ARE different as there is always a space between them, but that
    space gets arbitrary small (but still finite.)

    NUF(x) increases from 0 to ℵo. But it cannot increase to ℵo at one
    point x > 0 because at every point there is at most one unit fraction.
    Before ℵo there come 1, 2, 3, ...

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to All on Thu Sep 5 14:08:14 2024
    Le 05/09/2024 à 02:38, Richard Damon a écrit :
    On 9/4/24 4:23 PM, WM wrote:

    But all different unit fractions are different, i.e., they sit at
    different positive x. Therefore only one can sit closest to zero.

    nope, NONE sit closest to zero, as there are always more that are closer.

    NUF(x) must grow. It cannot grow by more than 1 at any x.

    That is what UNBOUNDED means.

    You are in error. That was the ancient idea of infinity. In fact unbounded means that you cannot see the end. But you can see a point behind the end, namly zero.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Moebius on Thu Sep 5 16:29:34 2024
    On 05.09.2024 16:22, Moebius wrote:
    Am 05.09.2024 um 09:30 schrieb Chris M. Thomasson:
    On 9/4/2024 5:38 PM, Richard Damon wrote:


    one [unit fraction] sit[s] closest to zero. [WM]

    nope, NONE [no unit fraction] sit[s] closest to zero, as there are
    always more that are closer.

    Right.

    Wrong.

    NUF(x) increases from 0 to ℵo. But it cannot increase to ℵo at one point
    x > 0 because at every point there is at most one unit fraction. Before
    ℵo there come 1, 2, 3, ...

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Thu Sep 5 16:22:07 2024
    Am 05.09.2024 um 09:30 schrieb Chris M. Thomasson:
    On 9/4/2024 5:38 PM, Richard Damon wrote:


    one [unit fraction] sit[s] closest to zero. [WM]

    nope, NONE [no unit fraction] sit[s] closest to zero, as there are always more that are closer.

    Right.

    If u is a unit fraction, 1/(1/u + 1) is a unit fraction which is closer
    to 0 than s.

    That is what UNBOUNDED means.

    Nope. The set of unit fractions is BOUNDED. It's lower bound is 0 and
    its upper bound (which also is its maximum) is 1.

    [...] WM must be trolling all night long

    Well, he's just a mathematical crank.

    --- SoupGate-Win32 v1.05
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  • From Jim Burns@21:1/5 to All on Thu Sep 5 14:56:42 2024
    On 9/5/2024 9:53 AM, WM wrote:
    Le 04/09/2024 à 22:52, Jim Burns a écrit :
    On 9/4/2024 3:10 PM, WM wrote:

    Either
    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0
    is wrong or Peano is wrong.

    ...or
    natural numbers aren't what you think they are.

    That is possible.

    My arguments hold only under
    the premise of actual infinity

    Apparently, it's because
    (in)finiteness isn't what you think it is
    that
    natural numbers aren't what you think they are.

    ⎛ In a set with an infinite linear order,
    ⎜ at least one nonempty subset has fewer than two ends.

    ⎜ In a set with a finite linear order,
    ⎜ no nonempty subset has fewer than two ends.

    ⎜ Sets have different orders, but
    ⎝ no set has both an infinite and a finite order.

    ⎛ < is a finite linear order of B
    ⎜ < has,
    ⎜ for each nonempty S ⊆ B, two ends.

    ⎜ x ∉ B
    ⎜ Extend < to <ₓ for B∪{x}

    ⎜ nonempty Sₓ ⊆ B∪{x}
    ⎜ Sₓ\{x} ⊆ B
    ⎜ Sₓ\{x} has two ends (except Sₓ\{x}={})
    ⎜ (min.Sₓ\{x} and max.Sₓ\{x})

    ⎜ x in Sₓ
    ⎜ either
    ⎜ replaces an end of Sₓ\{x}
    ⎜ (Sₓ has two ends, one is x)
    ⎜ or
    ⎜ doesn't replace an end of Sₓ\{x}
    ⎜ (Sₓ has two ends, neither is x)

    ⎜ <ₓ has,
    ⎜ for each nonempty Sₓ ⊆ B∪{x}, two ends.
    ⎝ <ₓ is a finite linear order of B∪{x}

    Therefore,
    if B has a finite order,
    then B∪{x} has a finite order.


    A set with a finite order is a finite set.

    A set with an infinite order is an infinite set.

    A set with neither a finite nor an infinite order
    is unusual, and
    a counter.example to the Axiom of Choice, and
    not any set or collection which we are discussing.

    A set with both a finite and an infinite order
    requires impossibilities, and
    is not.

    My arguments hold only under
    the premise of actual infinity
    showing that Hilbert's hotel is nonsense
    because the set of natural numbers cannot be extended.
    If all rooms are occupied
    than no guest can leave his room for a not occupied room.
    (When I was in USA or the first time,
    I asked in a Hilton whether they had free rooms.
    They laughed.)

    Yes, imagine
    someone "teaching" about mathematics
    who thinks that
    an infinite ordered set has
    two ends in each of its nonempty subsets.
    Very funny.

    Peano has been generalized from
    the small natural numbers.

    Peano describes the finite natural numbers.
    'Finite' doesn't need to be 'small'.

    Finite is much larger than
    Peano or you could/can imagine.

    Consider an ordinal β as {α:α<β}
    β = {α:α<β}
    β+1 = {α:α<β}∪{β}

    Define ω as the first transfinite ordinal.
    β < ω ⇔ {α:α<β} is finite

    From up.post,
    finite {α:α<β} ⇒ finite {α:α<β}∪{β}
    finite β ⇒ finite β+1
    β < ω ⇒ β+1 < ω

    ⎛ Define (ω-1)+1 = ω

    ⎜ ω-1 < ω ⇒ (ω-1)+1 < ω
    ⎜ ω-1 ≥ ω ⇒ (ω-1)+1 > ω
    ⎝ (ω-1)+1 ≠ ω

    Therefore, ω-1 doesn't exist.

    Finite is much larger than
    Peano or you could/can imagine.

    Insisting that ω-1 exists and that,
    for b ≠ 0 and β < ω, β-1 exists
    is
    insisting that ω is finite.

    The most frugal explanation of your claim is that
    you simply do not know what 'finite' means.

    Billions of people don't know what 'finite' means,
    and also live successful, fulfilling lives.
    However,
    nearly all of them aren't doing their best
    to spread their ignorance as far as they can.

    "All different unit fractions are different"
    however is a basic truth.
    Therefore I accept the latter.

    You also accept quantifier shifts,
    which breaks your logicᵂᴹ.
    Quantifier shifts are unreliable.

    Do you believe that it needs a shift to state:
    All different unit fractions are different.
    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0
    I can see no shift.

    It needs a shift to conclude from
    ( for each ⅟j: there is ⅟k≠⅟j: ⅟k < ⅟j
    that
    ( there is ⅟k: for each ⅟j≠⅟k: ⅟k < ⅟j

    Have you evolved on that topic?

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Thu Sep 5 15:57:06 2024
    On 9/5/2024 9:59 AM, WM wrote:
    Le 04/09/2024 à 23:26, Jim Burns a écrit :
    On 9/4/2024 4:23 PM, WM wrote:

    But all different unit fractions are different,
    i.e., they sit at different positive x.

    Yes,
    each two sit at two points,
    because ∀n ∈ ℕ: ⅟n-⅟(n+1) > 0

    Therefore only one can sit closest to zero.

    No,
    each sits not.closest to zero,
    because ∀n ∈ ℕ: ⅟n-⅟(n+1) > 0

    NUF(x) increases from 0 to more.

    ...at 0.
    ∀n ∈ ℕ: ⅟n ≠ 0

    It cannot increase to 2 or more
    before having accepted 1.

    NUFᵈᵉᶠ(x) cannot increase to 2
    without having already been ≥ 2
    0 < ... < ⅟(n+2) < ⅟(n+1) < ⅟n

    NUF(x) ≥ NUFᵈᵉᶠ(x)

    x > 0 ⇒ NUF(x) ≥ NUFᵈᵉᶠ(x) ≥ 2
    x ≤ 0 ⇒ NUF(x) = 0
    x ⪋ 0 ⇒ NUF(x) ≠ 1

    It cannot increase to ℵo without
    having accepted 1, 2, 3, ...

    x > 0 ⇒
    0 < ... < ⅟⌊4+⅟x⌋ < ⅟⌊3+⅟x⌋ < ⅟⌊2+⅟x⌋ < ⅟⌊1+⅟x⌋ < x

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Jim Burns on Thu Sep 5 22:44:03 2024
    On 05.09.2024 20:56, Jim Burns wrote:
    On 9/5/2024 9:53 AM, WM wrote:

    Insisting that ω-1 exists and that,
    for b ≠ 0 and β < ω, β-1 exists
    is
    insisting that ω is finite.

    No.

    The most frugal explanation of your claim is that
    you simply do not know what 'finite' means.

    Finite means that you can count from one end to the other. Infinite
    means that it is impossible to count from one end to the other.

    Do you believe that it needs a shift to state:
    All different unit fractions are different.
    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0
    I can see no shift.

    It needs a shift to conclude from
    ( for each ⅟j: there is ⅟k≠⅟j: ⅟k < ⅟j
    that
    ( there is ⅟k: for each ⅟j≠⅟k: ⅟k < ⅟j

    Have you evolved on that topic?

    You are mistaken. I do not conclude the latter from the former. I
    conclude the latter from the fact that NUF(0) = 0 and NUF(x>0) > 0 and
    never, at no x, NUF can increase by more than 1.

    Try to understand that.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Python@21:1/5 to All on Fri Sep 6 00:36:51 2024
    Le 05/09/2024 à 22:44, crank Wolfgang Mückenheim, aka WM a écrit :
    On 05.09.2024 20:56, Jim Burns wrote:
    On 9/5/2024 9:53 AM, WM wrote:

    Insisting that ω-1 exists and that,
    for b ≠ 0 and β < ω, β-1 exists
    is
    insisting that ω is finite.

    No.

    The most frugal explanation of your claim is that
    you simply do not know what 'finite' means.

    Finite means that you can count from one end to the other. Infinite
    means that it is impossible to count from one end to the other.

    Do you believe that it needs a shift to state:
    All different unit fractions are different.
    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0
    I can see no shift.

    It needs a shift to conclude from
    ( for each ⅟j: there is ⅟k≠⅟j: ⅟k < ⅟j
    that
    ( there is ⅟k: for each ⅟j≠⅟k: ⅟k < ⅟j

    Have you evolved on that topic?

    You are mistaken. I do not conclude the latter from the former. I
    conclude the latter from the fact that NUF(0) = 0 and NUF(x>0) > 0 and
    never, at no x, NUF can increase by more than 1.

    What the Hell could mean "to increase at an x" ?

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Fri Sep 6 00:45:46 2024
    Am 06.09.2024 um 00:36 schrieb Python:
    Le 05/09/2024 à 22:44, crank Wolfgang Mückenheim, aka WM a écrit :

    [...] and never, at no x, NUF can increase by more than 1.

    What the Hell could mean "to increase at an x" ?

    No one knows. :-P

    (We hat the same "discussion" in dsm. To no end.)

    --- SoupGate-Win32 v1.05
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  • From Moebius@21:1/5 to All on Fri Sep 6 00:46:23 2024
    Am 06.09.2024 um 00:36 schrieb Python:
    Le 05/09/2024 à 22:44, crank Wolfgang Mückenheim, aka WM a écrit :

    [...] and never, at no x, NUF can increase by more than 1.

    What the Hell could mean "to increase at an x" ?

    No one knows. :-P

    (We had the same "discussion" in dsm. To no end.)

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Fri Sep 6 00:49:13 2024
    Am 06.09.2024 um 00:46 schrieb Moebius:
    Am 06.09.2024 um 00:36 schrieb Python:
    Le 05/09/2024 à 22:44, crank Wolfgang Mückenheim, aka WM a écrit :

    [...] and never, at no x, NUF can increase by more than 1.

    What the Hell could mean "to increase at an x" ?

    No one knows. :-P

    (We had the same "discussion" in dsm. To no end.)

    On the other hand, since NUF is constant on (0, oo) we might accept his
    claim anyway. :-P

    After all, NFU does not increase on (0, oo) at all. :-)

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Fri Sep 6 00:50:54 2024
    Am 06.09.2024 um 00:46 schrieb Moebius:
    Am 06.09.2024 um 00:36 schrieb Python:
    Le 05/09/2024 à 22:44, crank Wolfgang Mückenheim, aka WM a écrit :

    [...] and never, at no x [e IR, x > 0], NUF can increase by more than 1.

    What the Hell could mean "to increase at an x" ?

    No one knows. :-P

    (We had the same "discussion" in dsm. To no end.)

    On the other hand, since NUF is constant on (0, oo) we might accept his
    claim anyway. :-P

    After all, NFU does not increase on (0, oo) at all. :-)

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Thu Sep 5 20:27:49 2024
    On 9/5/2024 4:44 PM, WM wrote:
    On 05.09.2024 20:56, Jim Burns wrote:
    On 9/5/2024 9:53 AM, WM wrote:
    Le 04/09/2024 à 22:52, Jim Burns a écrit :
    On 9/4/2024 3:10 PM, WM wrote:

    Either
    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0
    is wrong or Peano is wrong.

    ...or
    natural numbers aren't what you think they are.

    That is possible.

    Insisting that ω-1 exists and that,
    for b ≠ 0 and β < ω, β-1 exists
    is
    insisting that ω is finite.

    I should have mentioned β+1 and well.order.
    But, β+1 is β∪{β}, and,
    ordinal.ness means well.ordered.ness.

    No.

    Peano refers to those β = {α:α<β} such that
    ⎛ {α:α<β} is well.ordered
    ⎜ ∀α: 0<α≦β ⇒ 0≦α-1<β (stepped.down)
    ⎝ ∀α: 0≦α≦β ⇒ 0<α+1≦β+1 (stepped.up)

    The Peano axioms are a different way of describing
    the same numbers.

    ----
    The condition for cisfinite induction
    P(0) ∧ ∀β<ω:P(β)⇒P(β+1)
    is the condition for no.first.counter.example
    ¬∃γ<ω:( ¬P(γ) ∧ (γ=0 ∨ P(γ-1)) )

    Because they're ordinals,
    no.first.counter.example requires no.counter.example.
    No counter.example: induction.

    The well.ordered stepped.down stepped.up numbers
    are inductively.valid.

    ----
    Consider {α:α<β}
    Extend < from {α:α<β} to {α:α<β}∪{β} = {α:α<ᵦβ+1}
    where {α:α<β} ᵉᵃᶜʰ<ᵦ β

    0 = {α:α<0} = {} is well.ordered.
    if {α:α<β} is well.ordered,
    then {α:α<ᵦβ+1} is well.ordered.

    0 = {α:α<0} = {} is stepped.down.
    if {α:α<β} is stepped.down,
    then {α:α<ᵦβ+1} is stepped.down.

    0 = {α:α<0} = {} is stepped.up.
    if {α:α<β} is stepped.up,
    then {α:α<ᵦβ+1} is stepped.up.

    By induction,
    the inductively.valid numbers
    are well.ordered stepped.down stepped.up.

    Either
    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0
    is wrong or Peano is wrong.

    The most frugal explanation of your claim is that
    you simply do not know what 'finite' means.

    Finite means that
    you can count from one end to the other.
    Infinite means that
    it is impossible to count from one end to the other.

    It is impossible to count from ⅟1 down to
    _anything_ below the visibleᵂᴹ unit.fractions,
    because
    there is no step across
    any ⅟ℕᵈᵉᶠ ᵉᵃᶜʰ<ᵉᵃᶜʰ ⅟ℕᵈᵃʳᵏ split,
    because
    each step starting in ⅟ℕᵈᵉᶠ ends in ⅟ℕᵈᵉᶠ.

    Analogously, ω is on the far side of
    the cisfinite ᵉᵃᶜʰ<ᵉᵃᶜʰ transfinite split,
    and there is no step from ω-1 to ω

    tl;dr
    ω-1 does not exist.
    Any 'ω' for which 'ω-1' exists is
    a fake 'ω' NOT on the far side of ℕᵈᵉᶠ ᵉᵃᶜʰ<ᵉᵃᶜʰ ℕᵈᵃʳᵏ

    Do you believe that it needs a shift to state:
    All different unit fractions are different.
    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0
    I can see no shift.

    It needs a shift to conclude from
    ( for each ⅟j: there is ⅟k≠⅟j: ⅟k < ⅟j
    that
    ( there is ⅟k: for each ⅟j≠⅟k: ⅟k < ⅟j

    Have you evolved on that topic?

    You are mistaken.
    I do not conclude the latter from the former.
    I conclude the latter from the fact that
    NUF(0) = 0 and NUF(x>0) > 0
    and never, at no x, NUF can increase by more than 1.
    Try to understand that.

    x > 0 ⇒
    0 < ... < ⅟⌊4+⅟x⌋ < ⅟⌊3+⅟x⌋ < ⅟⌊2+⅟x⌋ < ⅟⌊1+⅟x⌋ < x

    You're welcome.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Thu Sep 5 23:06:22 2024
    On 9/5/24 10:29 AM, WM wrote:
    On 05.09.2024 16:22, Moebius wrote:
    Am 05.09.2024 um 09:30 schrieb Chris M. Thomasson:
    On 9/4/2024 5:38 PM, Richard Damon wrote:


    one [unit fraction] sit[s] closest to zero. [WM]

    nope, NONE [no unit fraction] sit[s] closest to zero, as there are
    always more that are closer.

    Right.

    Wrong.

    NUF(x) increases from 0 to ℵo. But it cannot increase to ℵo at one point x > 0 because at every point there is at most one unit fraction.  Before ℵo there come 1, 2, 3, ...

    Regards, WM



    Since it needs to find ℵo such points BEFORE we get to any of the finite values, you need to admit that either NUF(x) isn't defined or you have
    some other post-finite number system in view, which you logic is just
    incapable of handling since it can't even handle the infinite set of
    Natural Numbers.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Thu Sep 5 23:08:10 2024
    On 9/5/24 10:08 AM, WM wrote:
    Le 05/09/2024 à 02:38, Richard Damon a écrit :
    On 9/4/24 4:23 PM, WM wrote:

    But all different unit fractions are different, i.e., they sit at
    different positive x. Therefore only one can sit closest to zero.

    nope, NONE sit closest to zero, as there are always more that are closer.

    NUF(x) must grow. It cannot grow by more than 1 at any x.

    That is what UNBOUNDED means.

    You are in error. That was the ancient idea of infinity. In fact
    unbounded means that you cannot see the end. But you can see a point
    behind the end, namly zero.

    Regards, WM



    Right, there is no BOUND to the number in the set, so there is not "end"
    to that set in the set.

    The bound is outside the set.

    This is what happens when you deal with real infinite sets, which breaks
    your "finite" logic that can't deal with such things.

    This is NOT the "ancient" idea of infinity, just proof of your stupidity.

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Thu Sep 5 23:03:43 2024
    On 9/5/24 10:03 AM, WM wrote:
    Le 05/09/2024 à 02:35, Richard Damon a écrit :
    On 9/4/24 3:10 PM, WM wrote:

    Either ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 is wrong or Peano is wrong.

    Why?

    Peano has been generalized from the small natural numbers.
    "All different unit fractions are different" however is a basic
    truth. Therefore I accept the latter.

    And all ARE different as there is always a space between them, but
    that space gets arbitrary small (but still finite.)

    NUF(x) increases from 0 to ℵo. But it cannot increase to ℵo at one point x > 0 because at every point there is at most one unit fraction. .Before
    ℵo there come 1, 2, 3, ...

    Regards, WM


    But since there is not "first" point, NUF(x) just doesn't exist if the
    domain is just the finite values.

    NUF(x) can only be defined if x is in some post-finite set that defines
    values as unit fractions in that post-finite value.

    Things like 1/(w-1), 1/(w-2), ...

    This mean that when we "count" we count as:


    0, 1, 2, 3, 4, .... w-4, w-3, w-2, w-1, w, w+1, w+2,...

    where we shift from the natural numbers to your post-finite values as we
    pass through the ... and then into that "normal" transfinite value when
    we get to w.

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Richard Damon on Fri Sep 6 14:07:28 2024
    On 06.09.2024 05:08, Richard Damon wrote:
    On 9/5/24 10:08 AM, WM wrote:

    NUF(x) must grow. It cannot grow by more than 1 at any x.

    This is NOT the "ancient" idea of infinity,

    NUF(x) must grow. It cannot grow by more than 1 at any x.
    Right or wrong in your opinion?

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Fri Sep 6 14:12:29 2024
    On 05.09.2024 21:57, Jim Burns wrote:
    On 9/5/2024 9:59 AM, WM wrote:

    NUF(x) increases from 0 to more.

    ...at 0.

    No. NUF(x) counts the unit fractions between 0 and x. Between 0 and 0
    there is no unit fraction. NUF(0) = 0.

    It cannot increase to 2 or more
    before having accepted 1.

    NUFᵈᵉᶠ(x) cannot increase to 2
    without having already been ≥ 2

    Impossible. NUF(0) = 0. There is a first increase in linear order.
    It cannot increase to ℵo without
    having accepted 1, 2, 3, ...

    x > 0  ⇒
    0 < ... < ⅟⌊4+⅟x⌋ < ⅟⌊3+⅟x⌋ < ⅟⌊2+⅟x⌋ < ⅟⌊1+⅟x⌋ < x

    0 is smaller than all that. Therefore there is no increase at 0.
    x is larger than all that. Therefore your x is not the least one posiible.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Python on Fri Sep 6 14:22:00 2024
    On 06.09.2024 00:36, Python wrote:
    Le 05/09/2024 à 22:44, crank Wolfgang Mückenheim, aka WM a écrit :


    You are mistaken. I do not conclude the latter from the former. I
    conclude the latter from the fact that NUF(0) = 0 and NUF(x>0) > 0 and
    never, at no x, NUF can increase by more than 1.

    What the Hell could mean "to increase at an x" ?

    Example: The function f(x) = [x] increases at every x ∈ ℕ by 1.
    The function NUF(x) increases at every x = unit fraction 1/n by 1.
    It does not increase at 0 because 0 is not a unit fraction.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Fri Sep 6 12:26:21 2024
    Am Fri, 06 Sep 2024 14:22:00 +0200 schrieb WM:
    On 06.09.2024 00:36, Python wrote:
    Le 05/09/2024 à 22:44, crank Wolfgang Mückenheim, aka WM a écrit :

    You are mistaken. I do not conclude the latter from the former. I
    conclude the latter from the fact that NUF(0) = 0 and NUF(x>0) > 0 and
    never, at no x, NUF can increase by more than 1.
    What the Hell could mean "to increase at an x" ?
    Example: The function f(x) = [x] increases at every x ∈ ℕ by 1.
    The function NUF(x) increases at every x = unit fraction 1/n by 1. It
    does not increase at 0 because 0 is not a unit fraction.
    What exactly happens at those points?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to joes on Fri Sep 6 14:29:44 2024
    On 06.09.2024 14:26, joes wrote:
    Am Fri, 06 Sep 2024 14:22:00 +0200 schrieb WM:

    Example: The function f(x) = [x] increases at every x ∈ ℕ by 1.
    The function NUF(x) increases at every x = unit fraction 1/n by 1. It
    does not increase at 0 because 0 is not a unit fraction.
    What exactly happens at those points?

    The simplest action possible in mathematics: f --> f + 1

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Fri Sep 6 12:38:03 2024
    Am Fri, 06 Sep 2024 14:12:29 +0200 schrieb WM:
    On 05.09.2024 21:57, Jim Burns wrote:
    On 9/5/2024 9:59 AM, WM wrote:

    NUF(x) increases from 0 to more.
    ...at 0.
    No. NUF(x) counts the unit fractions between 0 and x. Between 0 and 0
    there is no unit fraction. NUF(0) = 0.

    It cannot increase to 2 or more before having accepted 1.
    NUFᵈᵉᶠ(x) cannot increase to 2 without having already been ≥ 2
    Impossible. NUF(0) = 0. There is a first increase in linear order.

    It cannot increase to ℵo without having accepted 1, 2, 3, ...
    x > 0  ⇒
    0 < ... < ⅟⌊4+⅟x⌋ < ⅟⌊3+⅟x⌋ < ⅟⌊2+⅟x⌋ < ⅟⌊1+⅟x⌋ < x
    0 is smaller than all that. Therefore there is no increase at 0.
    x is larger than all that. Therefore your x is not the least one
    posiible.
    Therefore no x can be the least unit fraction.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Moebius on Fri Sep 6 14:24:08 2024
    On 06.09.2024 00:50, Moebius wrote:

    On the other hand, since NUF is constant on (0, oo)

    NUF(0) = 0.
    NUF(x) grows in the positive real numbers.
    It cannot grow by more than 1 at any real number.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Python@21:1/5 to All on Fri Sep 6 15:42:33 2024
    Le 06/09/2024 à 14:29, Crank Wolfgang Mückenheim, aka WM a écrit :
    On 06.09.2024 14:26, joes wrote:
    Am Fri, 06 Sep 2024 14:22:00 +0200 schrieb WM:

    Example: The function f(x) = [x] increases at every x ∈ ℕ by 1.
    The function NUF(x) increases at every x = unit fraction 1/n by 1. It
    does not increase at 0 because 0 is not a unit fraction.
    What exactly happens at those points?

    The simplest action possible in mathematics: f --> f + 1

    What you wrote above is a function associating a function to a function.

    For instance [f -> f + 1](sin) = [x -> sin(x) + 1]

    Definitely NOT what you intended. Try to write what you mean in proper
    algebra (Hint: you'll notice you can't).

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Fri Sep 6 12:41:22 2024
    On 9/6/2024 8:12 AM, WM wrote:
    On 05.09.2024 21:57, Jim Burns wrote:
    On 9/5/2024 9:59 AM, WM wrote:

    NUF(x) increases from 0 to more.

    ...at 0.

    No.
    NUF(x) counts the unit fractions between 0 and x.
    Between 0 and 0
    there is no unit fraction.
    NUF(0) = 0.

    Between 0 and x
    there are more than 0 unit fractions
    there is more than 1 unit fraction
    there are more than 2 unit fractions
    there are more than 3 unit fractions
    ...

    0 < ... < ⅟⌊4+⅟x⌋ < ⅟⌊3+⅟x⌋ < ⅟⌊2+⅟x⌋ < ⅟⌊1+⅟x⌋ < x

    Between 0 and x
    there are more.than.any.k<ℵ₀ unit fractions.

    0 < ... < ⅟⌊k+1+⅟x⌋ < ... < ⅟⌊2+⅟x⌋ < ⅟⌊1+⅟x⌋ < x

    It cannot increase to 2 or more
    before having accepted 1.

    NUFᵈᵉᶠ(x) cannot increase to 2
    without having already been ≥ 2

    Impossible.
    NUF(0) = 0.
    There is a first increase in linear order.

    ∀ᴿx ∈ (-1,0]: ⌈x⌉ = 0
    ∀ᴿx ∈ (0,1]: ⌈x⌉ = 1

    Is there a first ε at which 5⋅⌈ε⌉ = 5 ?
    Is there a first ε at which 5⋅⌈ε⌉ = 1 ?
    Why is there?

    It cannot increase to ℵo without
    having accepted 1, 2, 3, ...

    x > 0  ⇒
    0 < ... < ⅟⌊4+⅟x⌋ < ⅟⌊3+⅟x⌋ < ⅟⌊2+⅟x⌋ < ⅟⌊1+⅟x⌋ < x

    0 is smaller than all that.
    Therefore there is no increase at 0.

    Increases and decreases involve nearby points
    from which increases and decreases increase and decrease.

    ∀ᴿx ∈ [-1,0): ⌊x⌋ = -1
    ∀ᴿx ∈ [0,1): ⌊x⌋ = 0
    ∀ᴿx ∈ [-1,0): ⌈-x⌉ = 1
    ∀ᴿx ∈ [0,1): ⌈-x⌉ = 0

    f(x) = ⌊x⌋ or f(x) = ⌈-x⌉
    f(x) either increases or decreases at 0

    f(0) = 0
    Can you answer
    whether f(x) increases or decreases at 0?

    No, you can't answer without information about
    nearby points.

    x is larger than all that.

    "All that" are more.than.any.k<ℵ₀ unit.fractions.
    NUF(x) = ℵ₀

    Therefore your x is not the least one posiible.

    Yes.
    x is NOT the first point > 0 after
    more.than.any.k<ℵ₀ unit.fractions.

    Generalize.
    What do we know about x ?
    x > 0
    What else?

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Python on Fri Sep 6 22:42:14 2024
    On 06.09.2024 15:42, Python wrote:
    Le 06/09/2024 à 14:29, Crank Wolfgang Mückenheim, aka WM a écrit :
    On 06.09.2024 14:26, joes wrote:
    Am Fri, 06 Sep 2024 14:22:00 +0200 schrieb WM:

    Example: The function f(x) = [x] increases at every x ∈ ℕ by 1.
    The function NUF(x) increases at every x = unit fraction 1/n by 1. It
    does not increase at 0 because 0 is not a unit fraction.
    What exactly happens at those points?

    The simplest action possible in mathematics: f --> f + 1

    What you wrote above is a function associating a function to a function.

    No it is a value changing to this value + 1.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to joes on Fri Sep 6 22:40:50 2024
    On 06.09.2024 14:38, joes wrote:
    Am Fri, 06 Sep 2024 14:12:29 +0200 schrieb WM:

    0 < ... < ⅟⌊4+⅟x⌋ < ⅟⌊3+⅟x⌋ < ⅟⌊2+⅟x⌋ < ⅟⌊1+⅟x⌋ < x
    0 is smaller than all that. Therefore there is no increase at 0.
    x is larger than all that. Therefore your x is not the least one
    posiible.
    Therefore no x can be the least unit fraction.

    No definable x. No epsilon.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to FromTheRafters on Fri Sep 6 22:54:16 2024
    On 06.09.2024 20:17, FromTheRafters wrote:
    WM submitted this idea :

    What the Hell could mean "to increase at an x" ?

    Example: The function f(x) = [x] increases at every x ∈ ℕ by 1.

    Make up your mind, is x real or natural.

    ℕ c ℝ.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Fri Sep 6 22:52:37 2024
    On 06.09.2024 18:41, Jim Burns wrote:
    On 9/6/2024 8:12 AM, WM wrote:
    On 05.09.2024 21:57, Jim Burns wrote:
    On 9/5/2024 9:59 AM, WM wrote:

    NUF(x) increases from 0 to more.

    ...at 0.

    No.
    NUF(x) counts the unit fractions between 0 and x.
    Between 0 and 0 there is no unit fraction.
    NUF(0) = 0.

    Between 0 and x
    there are more than 0 unit fractions

    Between 0 and your defined x or epsilon, not between 0 and every possible x.

    Between 0 and x
    there are more.than.any.k<ℵ₀ unit fractions.

    Betwee 0 and every epsilon you can define.

    NUF(0) = 0.
    There is a first increase in linear order.

    ∀ᴿx ∈ (-1,0]:  ⌈x⌉ = 0
    ∀ᴿx ∈ (0,1]:  ⌈x⌉ = 1

    Is there a first ε at which 5⋅⌈ε⌉ = 5 ?
    ε = 1. But that is not related to the topic.
    0 is smaller than all that.
    Therefore there is no increase at 0.

    Increases and decreases involve nearby points
    from which increases and decreases increase and decrease.

    But here we have always 2^ℵo points where the function is constant
    before it increases by 1.
    Can you answer
    whether f(x) increases or decreases at 0?

    It is constant 0.

    No, you can't answer without information about
    nearby points.

    I have information about nearby points on the negative axis. Only nearby
    points less than x are relevant for judging about an increase in x.
    Nearby points larger than x are irrelevant.

    x is larger than all that.

    "All that" are more.than.any.k<ℵ₀ unit.fractions.
    NUF(x) = ℵ₀

    Therefore your x is not the least one posiible.

    Yes.
    x is NOT the first point > 0 after
    more.than.any.k<ℵ₀ unit.fractions.

    But there is an x immediately after 0. What else should be there?

    Generalize.
    What do we know about x ?
    x > 0
    What else?

    We do not know anything. But we know that all unit fractions differ from
    each other. That is sufficient to know that NUF(x) increases by 1 only
    at any unit fraction.

    Regards, WM



    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Sat Sep 7 00:28:53 2024
    Am 07.09.2024 um 00:10 schrieb Chris M. Thomasson:
    On 9/5/2024 7:22 AM, Moebius wrote:
    Am 05.09.2024 um 09:30 schrieb Chris M. Thomasson:
    On 9/4/2024 5:38 PM, Richard Damon wrote:


    one [unit fraction] sit[s] closest to zero. [WM]

    nope, NONE [no unit fraction] sit[s] closest to zero, as there are
    always more that are closer.

    Right.

    If u is a unit fraction, 1/(1/u + 1) is a unit fraction which is
    closer to 0 than s.

    That is what UNBOUNDED means.

    Nope. The set of unit fractions is BOUNDED. It's lower bound is 0 and
    its upper bound (which also is its maximum) is 1.

    But it's "unbounded" wrt the infinity of unit fractions that get closer
    and closer to zero? Fair enough?


    [...] WM must be trolling all night long

    Well, he's just a mathematical crank.




    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to You can only pretend I on Fri Sep 6 19:51:02 2024
    On 9/6/2024 4:52 PM, WM wrote:
    On 06.09.2024 18:41, Jim Burns wrote:
    On 9/6/2024 8:12 AM, WM wrote:
    On 05.09.2024 21:57, Jim Burns wrote:
    On 9/5/2024 9:59 AM, WM wrote:

    NUF(x) increases from 0 to more.

    ...at 0.

    No.
    NUF(x) counts the unit fractions between 0 and x.
    Between 0 and 0 there is no unit fraction.
    NUF(0) = 0.

    Between 0 and x
    there are more than 0 unit fractions

    Between 0 and your defined x or epsilon,
    not between 0 and every possible x.

    If x > 0 then there is ⅟⌊1+⅟x⌋ between 0 and x

    ⅟⌊1+⅟x⌋ is not between 0 and every possible x′ > 0
    but ⅟⌊1+⅟x⌋ doesn't need to be.
    The claim is "between 0 and x".

    You (WM) think ⅟⌊1+⅟x⌋ needs every possible
    because
    you think a quantifier shift is reliable.
    A quantifier shift is not reliable.

    Between 0 and x
    there are more.than.any.k<ℵ₀ unit fractions.

    Betwee 0 and every epsilon you can define.

    Between 0 and any epsilon satisfying my description.
    I haven't made a claim for other epsilons.

    ⎛ n ∈ ℕ⁺ ⇔ n can be counted.to from 1
    ⎜⎛ ℕ⁺ is well.ordered
    ⎜⎜ min.ℕ⁺ = 1
    ⎜⎜∀n ∈ ℕ⁺: n-1 ∈ ℕ⁺ ⇔ n≠1
    ⎜⎝ ∀n ∈ ℕ⁺: n+1 ∈ ℕ⁺

    ⎜ ∀q: q ∈ ℚ⁺ ⇔
    ⎜ ∃j,k ∈ ℕ⁺: k⋅q = j

    ⎜ Splits.ℚ⁺ =
    ⎜ {S⊆ℚ⁺:∅≠Sᵉᵃᶜʰ<ₑₓᵢₛₜₛSᵉᵃᶜʰ<ᵉᵃᶜʰℚ⁺\S≠∅}

    ⎜ ∀r: r ∈ ℝ⁺ ⇔
    ⎝ ∃S' ∈ Splits.ℚ⁺: S' ᵉᵃᶜʰ< r ≤ᵉᵃᶜʰ ℚ⁺\S'

    ε ∈ ℝ⁺

    NUF(0) = 0.
    There is a first increase in linear order.

    ∀ᴿx ∈ (-1,0]:  ⌈x⌉ = 0
    ∀ᴿx ∈ (0,1]:  ⌈x⌉ = 1

    Is there a first ε at which 5⋅⌈ε⌉ = 5 ?

    ε = 1.

    Not even close to first.
    5⋅⌈½⌉ = 5
    etc.

    But that is not related to the topic.

    The topic is: sets without minimums.
    Such as {x ∈ ℝ: NUF(x) > 0}

    0 is smaller than all that.
    Therefore there is no increase at 0.

    Increases and decreases involve nearby points
    from which increases and decreases increase and decrease.

    Can you answer
    whether f(x) increases or decreases at 0?

    It is constant 0.

    f(x) = ⌊x⌋ or f(x) = ⌈-x⌉
    f(x) either increases or decreases at 0
    f(0) = 0

    f(x) is not constant.

    Does f(x) increase at 0 or decrease at 0 ?

    You can't answer.
    You can only pretend I asked a different question.

    No, you can't answer without information about
    nearby points.

    I have information about
    nearby points on the negative axis.

    Fascinating.
    Information about f(x) = ⌊x⌋ or ⌈-x⌉ ?
    Where did you get this information?

    Only nearby points less than x are relevant
    for judging about an increase in x.

    Only points on the left.
    And, if you step across the line,
    only points on the before.right which are now.left.
    Why?

    Nearby points larger than x are irrelevant.

    Why?
    Another response like "Because you are stupid"
    is you (WM) flailing.

    x is larger than all that.

    "All that" are more.than.any.k<ℵ₀ unit.fractions.
    NUF(x) = ℵ₀

    Therefore your x is not the least one posiible.

    Yes.
    x is NOT the first point > 0 after
    more.than.any.k<ℵ₀ unit.fractions.

    But there is an x immediately after 0.

    There isn't in ℝ⁺

    ⎛ n ∈ ℕ⁺ ⇔ n can be counted.to from 1
    ⎜⎛ ℕ⁺ is well.ordered
    ⎜⎜ min.ℕ⁺ = 1
    ⎜⎜∀n ∈ ℕ⁺: n-1 ∈ ℕ⁺ ⇔ n≠1
    ⎜⎝ ∀n ∈ ℕ⁺: n+1 ∈ ℕ⁺

    ⎜ ∀q: q ∈ ℚ⁺ ⇔
    ⎜ ∃j,k ∈ ℕ⁺: k⋅q = j

    ⎜ Splits.ℚ⁺ =
    ⎜ {S⊆ℚ⁺:∅≠Sᵉᵃᶜʰ<ₑₓᵢₛₜₛSᵉᵃᶜʰ<ᵉᵃᶜʰℚ⁺\S≠∅}

    ⎜ ∀r: r ∈ ℝ⁺ ⇔
    ⎝ ∃S' ∈ Splits.ℚ⁺: S' ᵉᵃᶜʰ< r ≤ᵉᵃᶜʰ ℚ⁺\S'

    Generalize.
    What do we know about x ?
    x > 0
    What else?

    We do not know anything.
    But we know that
    all unit fractions differ from each other.
    That is sufficient to know that
    NUF(x) increases by 1 only at any unit fraction.

    NUF(x) never increases by 1.
    If NUF(x) > 0 then NUF(x) > 1
    If NUF(x) > 1 then NUF(x) > 2
    If NUF(x) > 2 then NUF(x) > 3
    ...

    If NUF(x) > 0 then,
    for each k < ℵ₀ NUF(x) > k

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    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Fri Sep 6 22:01:01 2024
    On 9/6/24 8:07 AM, WM wrote:
    On 06.09.2024 05:08, Richard Damon wrote:
    On 9/5/24 10:08 AM, WM wrote:

    NUF(x) must grow. It cannot grow by more than 1 at any x.

    This is NOT the "ancient" idea of infinity,

    NUF(x) must grow. It cannot grow by more than 1 at any x.
    Right or wrong in your opinion?

    Regards, WM


    Only if it exists.

    If it does, it must be counting some sub-finite values as "unit
    fractions" that are not the reciprocal of the Natural Numbers (since
    there is no smallest of those unit fractions to count from).

    So, either it is counting some sub-finite values (actually a lot of them
    a countable infinity of them) or it just doesn't exist.

    Maybe that is your dark numbers, these sub-finite numbers that are
    reciprocals of some post-finite values above the infinite set of Natural Numbers (which have no upper bound) and are below Omega.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Python@21:1/5 to All on Sat Sep 7 11:19:10 2024
    Le 06/09/2024 à 22:42, Crank Wolfgang Mückenheim, aka WM a écrit :
    On 06.09.2024 15:42, Python wrote:
    Le 06/09/2024 à 14:29, Crank Wolfgang Mückenheim, aka WM a écrit :
    On 06.09.2024 14:26, joes wrote:
    Am Fri, 06 Sep 2024 14:22:00 +0200 schrieb WM:

    Example: The function f(x) = [x] increases at every x ∈ ℕ by 1.
    The function NUF(x) increases at every x = unit fraction 1/n by 1. It >>>>> does not increase at 0 because 0 is not a unit fraction.
    What exactly happens at those points?

    The simplest action possible in mathematics: f --> f + 1

    What you wrote above is a function associating a function to a function.

    No it is a value changing to this value + 1.

    So it is another value. A value does not change.

    Meanwhile you are still unable to provide a sound algebraic definition
    of "increasing at a point" for a function.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Python on Sat Sep 7 12:50:35 2024
    On 07.09.2024 11:19, Python wrote:
    Le 06/09/2024 à 22:42, Crank Wolfgang Mückenheim, aka WM a écrit :
    On 06.09.2024 15:42, Python wrote:
    Le 06/09/2024 à 14:29, Crank Wolfgang Mückenheim, aka WM a écrit :
    On 06.09.2024 14:26, joes wrote:
    Am Fri, 06 Sep 2024 14:22:00 +0200 schrieb WM:

    Example: The function f(x) = [x] increases at every x ∈ ℕ by 1. >>>>>> The function NUF(x) increases at every x = unit fraction 1/n by 1. It >>>>>> does not increase at 0 because 0 is not a unit fraction.
    What exactly happens at those points?

    The simplest action possible in mathematics: f --> f + 1

    What you wrote above is a function associating a function to a function.

    No it is a value changing to this value + 1.

    So it is another value. A value does not change.

    The value is a function of x. It can change when x changes.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Sat Sep 7 13:02:17 2024
    On 07.09.2024 01:51, Jim Burns wrote:
    On 9/6/2024 4:52 PM, WM wrote:

    Between 0 and your defined x or epsilon,
    not between 0 and every possible x.

    If x > 0  then there is ⅟⌊1+⅟x⌋  between 0 and x

    Then identical unit fractions differ.
    They are identical because NUF(x) counts them at the same x, but they
    differ because NUF(x) counts more than 1 at this x.

    A quantifier shift is not reliable.

    That is no quantifier shift but simplest logic.

    Between 0 and x
    there are more.than.any.k<ℵ₀ unit fractions.

    Between 0 and every epsilon you can define.

    Between 0 and any epsilon satisfying my description.
    I haven't made a claim for other epsilons.

    Fine. There I agree. Every of your epsilons has ℵo smaller unit
    fractions in (0, eps). This proves dark numbers.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Sat Sep 7 13:29:42 2024
    Am 07.09.2024 um 11:19 schrieb Python:
    Le 06/09/2024 à 22:42, Crank Wolfgang Mückenheim, aka WM a écrit :

    [...] it is a value changing to this value + 1.

    Where exactly does it "chance"?

    [...] A value does not change.

    Meanwhile you are still unable to provide a sound algebraic definition
    of "increasing at a point" [...].

    He rejects the notion of a "jump" (at some point). :-)

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Sat Sep 7 11:56:19 2024
    Am Sat, 07 Sep 2024 12:50:35 +0200 schrieb WM:
    On 07.09.2024 11:19, Python wrote:
    Le 06/09/2024 à 22:42, Crank Wolfgang Mückenheim, aka WM a écrit :
    On 06.09.2024 15:42, Python wrote:
    Le 06/09/2024 à 14:29, Crank Wolfgang Mückenheim, aka WM a écrit : >>>>> On 06.09.2024 14:26, joes wrote:
    Am Fri, 06 Sep 2024 14:22:00 +0200 schrieb WM:

    Example: The function f(x) = [x] increases at every x ∈ ℕ by 1. >>>>>>> The function NUF(x) increases at every x = unit fraction 1/n by 1. >>>>>>> It does not increase at 0 because 0 is not a unit fraction.
    What exactly happens at those points?
    The simplest action possible in mathematics: f --> f + 1
    What you wrote above is a function associating a function to a
    function.
    No it is a value changing to this value + 1.
    So it is another value. A value does not change.
    The value is a function of x. It can change when x changes.
    We are getting closer to a definition, but the difference is still
    visible :P How much does x need to change?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Moebius on Sat Sep 7 14:04:00 2024
    On 07.09.2024 13:29, Moebius wrote:
    Am 07.09.2024 um 11:19 schrieb Python:
    Le 06/09/2024 à 22:42, Crank Wolfgang Mückenheim, aka WM a écrit :

    [...] it is a value changing to this value + 1.

    Where exactly does it "chance"?

    It, NUF(x), changes at every x = 1/n for n ∈ ℕ.

    NUF(x) changes by 1 because a change by more at any x would count more different unit fractions 1/n, 1/m, 1/k, ... which are identical because
    they are the same x = 1/n = 1/m = 1/k = ... .

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Sat Sep 7 13:36:48 2024
    Am 07.09.2024 um 13:29 schrieb Moebius:
    Am 07.09.2024 um 11:19 schrieb Python:
    Le 06/09/2024 à 22:42, Crank Wolfgang Mückenheim, aka WM a écrit :

    [...] it is a value changing to this value + 1.

    Where exactly does it "chance"?

    Hint@Mckenheim: NUBF(0) = 0 (no "change"!). For all x > 0: NUF(x) =
    aleph_0 (no "change" at any x).

    [...] A value does not change.

    Meanwhile you are still unable to provide a sound algebraic definition
    of "increasing at a point" [...].

    He rejects the notion of a "jump" (at some point). :-)

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Sat Sep 7 08:41:35 2024
    On 9/7/24 7:02 AM, WM wrote:
    On 07.09.2024 01:51, Jim Burns wrote:
    On 9/6/2024 4:52 PM, WM wrote:

    Between 0 and your defined x or epsilon,
    not between 0 and every possible x.

    If x > 0  then there is ⅟⌊1+⅟x⌋  between 0 and x

    Then identical unit fractions differ.
    They are identical because NUF(x) counts them at the same x, but they
    differ because NUF(x) counts more than 1 at this x.

    A quantifier shift is not reliable.

    That is no quantifier shift but simplest logic.

    Between 0 and x
    there are more.than.any.k<ℵ₀ unit fractions.

    Between 0 and every epsilon you can define.

    Between 0 and any epsilon satisfying my description.
    I haven't made a claim for other epsilons.

    Fine. There I agree. Every of your epsilons has ℵo smaller unit
    fractions in (0, eps). This proves dark numbers.

    Regards, WM

    No, not the way you try to call them. It proves your concepts are just
    broken.

    Yes, we might be able to define a set of "dark numbers" as being a type
    of sub-finite and post-finite number, the sub-finite numbers being a
    form of infinitesimal smaller than any finite number, and the
    post-finite infinite numbers that are greater than all of the infinite
    set o finite numbers, but you seem to want to try to define that
    possibility away, and since your mathematical ability can't even handle
    the unbounded finite numbers, it has no hope for these sub/post-finite
    values.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Sat Sep 7 08:37:15 2024
    On 9/7/24 8:04 AM, WM wrote:
    On 07.09.2024 13:29, Moebius wrote:
    Am 07.09.2024 um 11:19 schrieb Python:
    Le 06/09/2024 à 22:42, Crank Wolfgang Mückenheim, aka WM a écrit :

    [...] it is a value changing to this value + 1.

    Where exactly does it "chance"?

    It, NUF(x), changes at every x = 1/n for n ∈ ℕ.

    NUF(x) changes by 1 because a change by more at any x would count more different unit fractions 1/n,  1/m, 1/k, ... which are identical because they are the same x = 1/n = 1/m = 1/k = ... .

    Regards, WM
    And thus is always has a value of aleph_0 for all x > 0, since there is
    always aleph_0 unit fractions below and finite positive x value.

    In doesn't "increase by one" at any value of x, because aleph_0 + 1 =
    aleph_0 by the mathematics of trans-finite numbers.

    Between 0 and positive x, it just jumps, as that is an accumulation
    point for the unit fractions, which have no "smallest" value to increase
    by one at.

    Thus, your verbal description of what NUF(x) should be is just incorrect because it is based on misconceptions.

    To allow it to step the way you want, you need its domain to include a sub-finite set of numbers that are the reciprocals of some post-finite
    number that are abve the infinite set of Natural Numbers.

    Sorry, that is just your requirements to allow NUF(x) to exist the way
    you have defined it. Since you have shown your mathematics can't even
    handle the full set of the Natural Numbers, you are not going to be able
    to handle these sub/post-finite numbers.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Sat Sep 7 14:55:02 2024
    On 07.09.2024 04:01, Richard Damon wrote:
    On 9/6/24 8:12 AM, WM wrote:
    On 05.09.2024 21:57, Jim Burns wrote:
    On 9/5/2024 9:59 AM, WM wrote:

    NUF(x) increases from 0 to more.

    ...at 0.

    No. NUF(x) counts the unit fractions between 0 and x. Between 0 and 0
    there is no unit fraction. NUF(0) = 0.

    But it CAN'T for the values of x that are finite, as for ANY finite
    number, there is an infinite number of unit factions below it, so it
    can't ever have a finite value for any finite x.

    This idea must be dropped.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to Ross Finlayson on Sat Sep 7 08:57:10 2024
    On 9/6/24 11:00 PM, Ross Finlayson wrote:
    On 09/06/2024 07:01 PM, Richard Damon wrote:
    On 9/6/24 8:07 AM, WM wrote:
    On 06.09.2024 05:08, Richard Damon wrote:
    On 9/5/24 10:08 AM, WM wrote:

    NUF(x) must grow. It cannot grow by more than 1 at any x.

    This is NOT the "ancient" idea of infinity,

    NUF(x) must grow. It cannot grow by more than 1 at any x.
    Right or wrong in your opinion?

    Regards, WM


    Only if it exists.

    If it does, it must be counting some sub-finite values as "unit
    fractions" that are not the reciprocal of the Natural Numbers (since
    there is no smallest of those unit fractions to count from).

    So, either it is counting some sub-finite values (actually a lot of them
    a countable infinity of them) or it just doesn't exist.

    Maybe that is your dark numbers, these sub-finite numbers that are
    reciprocals of some post-finite values above the infinite set of Natural
    Numbers (which have no upper bound) and are below Omega.

    That's a remarkable supposition, I wonder how you'd imagine
    both to satisfy to yourself and others that thusly is a
    "consistent" form, of course which only requires "internal
    consistency" for its own sake, then besides, to suffer the
    running of the gauntlet, of those who'd insist it contradicted
    theirs. For, their are simple inductive arguments that nothing
    ever happens or is, at all.

    I sort of appreciate the sentiment, though, that "infinite"
    is big enough to have quite a range.



    The problem with "consistancy" is that WM's mathematicss isn't
    consistent with the full Natural Numbers, and unlikely to be helped with
    the addition of something even more esoteric.

    His work doesn't define the set well enough to actually define how it
    must work, and the best answer is likly to just adopt one of the
    existing set of sub-finite number, it just needs to have a countably
    infinite subset of values that can be reasonable defined as "unit
    fractions".

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Moebius on Sat Sep 7 15:07:16 2024
    On 07.09.2024 13:36, Moebius wrote:
    For all x > 0: NUF(x) = aleph_0 (no "change" at any x)

    Stop that nonsense. ℵo unit fractions and their distances do not fit
    into every interval (0, x). The distance between any pair of unit
    fractions is larger.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Sat Sep 7 15:03:35 2024
    On 07.09.2024 14:37, Richard Damon wrote:
    On 9/7/24 8:04 AM, WM wrote:

    NUF(x) changes by 1 because a change by more at any x would count more
    different unit fractions 1/n,  1/m, 1/k, ... which are identical
    because they are the same x = 1/n = 1/m = 1/k = ... .

    And thus is always has a value of aleph_0 for all x > 0, since there is always aleph_0 unit fractions below and finite positive x value.

    Stop that nonsense. ℵo unit fractions cannot fit into every interval (0,
    x). The distance between two unit fractions already is larger. And if
    you claim that ℵo unit fractions exist, then you must accept that their distances do exist too.

    By the way this is independent of the existence of NUF.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Sat Sep 7 08:58:52 2024
    On 9/7/24 8:55 AM, WM wrote:
    On 07.09.2024 04:01, Richard Damon wrote:
    On 9/6/24 8:12 AM, WM wrote:
    On 05.09.2024 21:57, Jim Burns wrote:
    On 9/5/2024 9:59 AM, WM wrote:

    NUF(x) increases from 0 to more.

    ...at 0.

    No. NUF(x) counts the unit fractions between 0 and x. Between 0 and 0
    there is no unit fraction. NUF(0) = 0.

    But it CAN'T for the values of x that are finite, as for ANY finite
    number, there is an infinite number of unit factions below it, so it
    can't ever have a finite value for any finite x.

    This idea must be dropped.

    Regards, WM

    Then the idea that NUF(x) "increases by one" at the values of "unit
    fractions" must be dropped.

    Sorry, you can't have one without the other.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Sat Sep 7 15:06:08 2024
    On 07.09.2024 04:01, Richard Damon wrote:
    On 9/6/24 8:07 AM, WM wrote:

    NUF(x) must grow. It cannot grow by more than 1 at any x.
    Right or wrong in your opinion?

    Only if it exists.

    There is no reason to deny its existence. If there is zero and all real
    numbers x > 0 and if there are unit fractions, then we can ask how many
    unit fractions are between 0 and any x.

    If it does, it must be counting some sub-finite values as "unit
    fractions" that are not the reciprocal of the Natural Numbers

    Only reciprocals of natural numbers are counted.

    (since there is no smallest of those unit fractions to count from).

    Perhaps you consider only definable natural numbers. They have no
    largest element.

    Maybe that is your dark numbers, these sub-finite numbers that are
    reciprocals of some post-finite values above the infinite set of Natural Numbers (which have no upper bound) and are below Omega.

    Dark numbers are post finitely definable.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Sat Sep 7 15:08:38 2024
    On 07.09.2024 04:01, Richard Damon wrote:
    On 9/6/24 4:40 PM, WM wrote:
    On 06.09.2024 14:38, joes wrote:
    Am Fri, 06 Sep 2024 14:12:29 +0200 schrieb WM:

    0 < ... < ⅟⌊4+⅟x⌋ < ⅟⌊3+⅟x⌋ < ⅟⌊2+⅟x⌋ < ⅟⌊1+⅟x⌋ < x
    0 is smaller than all that. Therefore there is no increase at 0.
    x is larger than all that. Therefore your x is not the least one
    posiible.
    Therefore no x can be the least unit fraction.

    No definable x. No epsilon.

    Which means no "Unit Fraction" as the reciprical of a Natural Number,
    since they are all definable.

    All natural numbers which you recognize are definable.

    Thus, your NUF must also be counting some sub-finite values, or it just doesn't exist.

    It exists. It counts definable numbers as well as sub-finitely definale numbers.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Sat Sep 7 09:26:34 2024
    On 9/7/24 9:03 AM, WM wrote:
    On 07.09.2024 14:37, Richard Damon wrote:
    On 9/7/24 8:04 AM, WM wrote:

    NUF(x) changes by 1 because a change by more at any x would count
    more different unit fractions 1/n,  1/m, 1/k, ... which are identical
    because they are the same x = 1/n = 1/m = 1/k = ... .

    And thus is always has a value of aleph_0 for all x > 0, since there
    is always aleph_0 unit fractions below and finite positive x value.

    Stop that nonsense. ℵo unit fractions cannot fit into every interval (0, x). The distance between two unit fractions already is larger. And if
    you claim that ℵo unit fractions exist, then you must accept that their distances do exist too.

    By the way this is independent of the existence of NUF.

    Regards, WM

    Of course the can. Let N = floor(1/x)

    Then we can put 1/(N+1), 1/(N+2), 1/(N+3), ... 1/(N+n), ... for all
    finite additions n, all aleph_0 of them into that interval.

    Show me a value of x that doesn't hold.

    Note, the distance between all of them exists, but the sum of the
    distances between of all the unit fractions is just 1, and the sum of
    the distances between all of the unit fractions smaller than x is less
    than x.

    The concept of finite but unboundedly small seems beyound your minds
    ability to process.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Sat Sep 7 15:31:09 2024
    On 07.09.2024 14:58, Richard Damon wrote:
    On 9/7/24 8:55 AM, WM wrote:
    On 07.09.2024 04:01, Richard Damon wrote:

    But it CAN'T for the values of x that are finite, as for ANY finite
    number, there is an infinite number of unit factions below it, so it
    can't ever have a finite value for any finite x.

    This idea must be dropped.

    Then the idea that NUF(x) "increases by one" at the values of "unit fractions" must be dropped.

    Sorry, you can't have one without the other.

    Then logic breaks down because identical elements differ.
    The unit fractions are identical because they sit at the same x, but
    they differ because they are ℵo different unit fractions.

    Logic or the successor axiom? Without the former the latter would be
    useless.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Sat Sep 7 09:21:46 2024
    On 9/7/24 9:07 AM, WM wrote:
    On 07.09.2024 13:36, Moebius wrote:
    For all x > 0: NUF(x) = aleph_0 (no "change" at any x)

    Stop that nonsense. ℵo unit fractions and their distances do not fit
    into every interval (0, x). The distance between any pair of unit
    fractions is larger.

    Regards, WM

    Of course they do.

    I guess you are still stuck on the fact that Achilles can't pass the
    Turtle as the sum of the times of each movement to where he reaches the previous turle location can't be convergent.

    You just don't understand that the for ANY finite distance, there exists
    a pair of unit fractions that are closer than that.

    Sorry, you are just proving your stupidity.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Sat Sep 7 09:30:01 2024
    On 9/7/24 9:08 AM, WM wrote:
    On 07.09.2024 04:01, Richard Damon wrote:
    On 9/6/24 4:40 PM, WM wrote:
    On 06.09.2024 14:38, joes wrote:
    Am Fri, 06 Sep 2024 14:12:29 +0200 schrieb WM:

    0 < ... < ⅟⌊4+⅟x⌋ < ⅟⌊3+⅟x⌋ < ⅟⌊2+⅟x⌋ < ⅟⌊1+⅟x⌋ < x
    0 is smaller than all that. Therefore there is no increase at 0.
    x is larger than all that. Therefore your x is not the least one
    posiible.
    Therefore no x can be the least unit fraction.

    No definable x. No epsilon.

    Which means no "Unit Fraction" as the reciprical of a Natural Number,
    since they are all definable.

    All natural numbers which you recognize are definable.

    Which means that *ALL* Natural numbers are definable, the whole infinite
    set of them.


    Thus, your NUF must also be counting some sub-finite values, or it
    just doesn't exist.

    It exists. It counts definable numbers as well as sub-finitely definale numbers.

    And thus you accept that the domain of our NUF(x) isn't just a finite
    number system, but includes a sub-finite system of numbers, and that the
    value of x where NUF(x) is 1 isn't in the domain of finite numbers, so
    it doesn't increase at 1/n for some Natural Number, but increase at some
    "unit fraction" that is the reciprical of an post-finite number, greater
    than all Natural numbers.


    Regards, WM


    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Sat Sep 7 15:33:12 2024
    On 07.09.2024 15:21, Richard Damon wrote:
    On 9/7/24 9:07 AM, WM wrote:
    On 07.09.2024 13:36, Moebius wrote:
    For all x > 0: NUF(x) = aleph_0 (no "change" at any x)

    Stop that nonsense. ℵo unit fractions and their distances do not fit
    into every interval (0, x). The distance between any pair of unit
    fractions is larger.

    Of course they do.

    The distance is made of 2^ℵo points. Every x > 0 can mean 3 points.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Sat Sep 7 13:36:09 2024
    Am Sat, 07 Sep 2024 13:02:17 +0200 schrieb WM:
    On 07.09.2024 01:51, Jim Burns wrote:
    On 9/6/2024 4:52 PM, WM wrote:

    Between 0 and your defined x or epsilon, not between 0 and every
    possible x.
    If x > 0  then there is ⅟⌊1+⅟x⌋  between 0 and x
    Then identical unit fractions differ.
    They are identical because NUF(x) counts them at the same x, but they
    differ because NUF(x) counts more than 1 at this x.
    What?

    A quantifier shift is not reliable.
    That is no quantifier shift but simplest logic.

    Between 0 and x there are more.than.any.k<ℵ₀ unit fractions.
    Between 0 and every epsilon you can define.
    Between 0 and any epsilon satisfying my description.
    I haven't made a claim for other epsilons.
    Fine. There I agree. Every of your epsilons has ℵo smaller unit
    fractions in (0, eps). This proves dark numbers.
    And all mathematics is well. Only WM doesn’t understand infinity.
    What exactly is the proof?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Sat Sep 7 13:33:46 2024
    Am Fri, 06 Sep 2024 22:52:37 +0200 schrieb WM:
    On 06.09.2024 18:41, Jim Burns wrote:
    On 9/6/2024 8:12 AM, WM wrote:
    On 05.09.2024 21:57, Jim Burns wrote:
    On 9/5/2024 9:59 AM, WM wrote:

    NUF(x) increases from 0 to more.
    ...at 0.
    No.
    NUF(x) counts the unit fractions between 0 and x.
    Between 0 and 0 there is no unit fraction. NUF(0) = 0.
    Between 0 and x there are more than 0 unit fractions
    Between 0 and your defined x or epsilon, not between 0 and every
    possible x.
    Which are yet to be defined.

    Between 0 and x there are more.than.any.k<ℵ₀ unit fractions.
    Betwee 0 and every epsilon you can define.
    Enough for me.

    NUF(0) = 0.
    There is a first increase in linear order.
    ∀ᴿx ∈ (-1,0]:  ⌈x⌉ = 0 ∀ᴿx ∈ (0,1]:  ⌈x⌉ = 1
    Is there a first ε at which 5⋅⌈ε⌉ = 5 ?
    ε = 1. But that is not related to the topic.
    First, not last.

    0 is smaller than all that.
    Therefore there is no increase at 0.
    Increases and decreases involve nearby points from which increases and
    decreases increase and decrease.
    But here we have always 2^ℵo points where the function is constant
    before it increases by 1.
    So what?

    Can you answer whether f(x) increases or decreases at 0?
    It is constant 0.

    No, you can't answer without information about nearby points.
    I have information about nearby points on the negative axis. Only nearby points less than x are relevant for judging about an increase in x.
    Nearby points larger than x are irrelevant.
    What about the negative of Dirac’s delta?

    Therefore your x is not the least one posiible.
    Yes.
    x is NOT the first point > 0 after more.than.any.k<ℵ₀ unit.fractions.
    But there is an x immediately after 0. What else should be there?
    You in particular should know the reals are dense. There is no
    „immediately after”.

    Generalize.
    What do we know about x ?
    x > 0 What else?
    We do not know anything. But we know that all unit fractions differ from
    each other. That is sufficient to know that NUF(x) increases by 1 only
    at any unit fraction.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Sat Sep 7 09:35:45 2024
    On 9/7/24 9:06 AM, WM wrote:
    On 07.09.2024 04:01, Richard Damon wrote:
    On 9/6/24 8:07 AM, WM wrote:

    NUF(x) must grow. It cannot grow by more than 1 at any x.
    Right or wrong in your opinion?

    Only if it exists.

    There is no reason to deny its existence. If there is zero and all real numbers x > 0 and if there are unit fractions, then we can ask how many
    unit fractions are between 0 and any x.

    Right, and that number is aleph_0 for ALL finite x.

    What doesn't work is say9ing that it must increase by just one, since
    the only points that we can evaluate it at (if we are dealing with
    finite numbers) it has already gotten to an infinite value where the
    concept of "increment" doesn't really exist.



    If it does, it must be counting some sub-finite values as "unit
    fractions" that are not the reciprocal of the Natural Numbers

    Only reciprocals of natural numbers are counted.

    Then it never has a value of ONE.

    Sorry, you are just being inconsistant, and thus showing that you brain
    has been exploded by the inconsistancy in your logic.


    (since there is no smallest of those unit fractions to count from).

    Perhaps you consider only definable natural numbers. They have no
    largest element.

    And thus the unit fractions, there reciprical, have not smallest element.



    Maybe that is your dark numbers, these sub-finite numbers that are
    reciprocals of some post-finite values above the infinite set of Natural Numbers (which have no upper bound) and are below Omega.

    Dark numbers are post finitely definable.


    And thus are NOT "finite" numbers, so neither natural Numbers or Unit
    Fractions of Natural Numbers.

    Note, "Post-finite" means beyond the finite, so could be things like the trans-finite numbers, or something more essoteric.


    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Sat Sep 7 13:37:05 2024
    Am Sat, 07 Sep 2024 15:03:35 +0200 schrieb WM:
    On 07.09.2024 14:37, Richard Damon wrote:
    On 9/7/24 8:04 AM, WM wrote:

    NUF(x) changes by 1 because a change by more at any x would count more
    different unit fractions 1/n,  1/m, 1/k, ... which are identical
    because they are the same x = 1/n = 1/m = 1/k = ... .
    And thus is always has a value of aleph_0 for all x > 0, since there is
    always aleph_0 unit fractions below and finite positive x value.
    Stop that nonsense. ℵo unit fractions cannot fit into every interval (0, x). The distance between two unit fractions already is larger. And if
    you claim that ℵo unit fractions exist, then you must accept that their distances do exist too.
    By the way this is independent of the existence of NUF.
    Why can they not „fit”?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to joes on Sat Sep 7 15:41:46 2024
    On 07.09.2024 15:33, joes wrote:
    Am Fri, 06 Sep 2024 22:52:37 +0200 schrieb WM:

    But there is an x immediately after 0. What else should be there?

    You in particular should know the reals are dense. There is no
    „immediately after”.

    In actual infinity all points are there. If you believe that between
    every pair of points points can be inserted - and that infinitely often
    - then you apply potential infinity. In actual infinity all points are
    there from the beginning without infinite processing.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to joes on Sat Sep 7 15:45:08 2024
    On 07.09.2024 15:37, joes wrote:
    Am Sat, 07 Sep 2024 15:03:35 +0200 schrieb WM:

    By the way this is independent of the existence of NUF.
    Why can they not „fit”?

    Because ℵo unit fractions have ℵo gaps. We can use one of the gaps as x > 0.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Sat Sep 7 13:44:24 2024
    Am Sat, 07 Sep 2024 15:06:08 +0200 schrieb WM:
    On 07.09.2024 04:01, Richard Damon wrote:
    On 9/6/24 8:07 AM, WM wrote:

    NUF(x) must grow. It cannot grow by more than 1 at any x.
    Only if it exists.
    There is no reason to deny its existence. If there is zero and all real numbers x > 0 and if there are unit fractions, then we can ask how many
    unit fractions are between 0 and any x.
    You seem to be denying the existence of an infinite step function
    (regardless of whether you believe it to be equal to yours). You are
    imagining function that somehow (looking from the right) counts down
    infinity going to the left. I understand your argument of unique single-
    step positions, yet there is no space for an infinity of them.

    If it does, it must be counting some sub-finite values as "unit
    fractions" that are not the reciprocal of the Natural Numbers
    Only reciprocals of natural numbers are counted.
    Which are all visible/definable/light/finite.

    (since there is no smallest of those unit fractions to count from).
    Perhaps you consider only definable natural numbers. They have no
    largest element.
    Thank you.

    [fix your quotes]
    Maybe that is your dark numbers, these sub-finite numbers that are
    reciprocals of some post-finite values above the infinite set of
    Natural Numbers (which have no upper bound) and are below Omega.
    Dark numbers are post finitely definable.
    Uh what now?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to joes on Sat Sep 7 15:49:08 2024
    On 07.09.2024 15:36, joes wrote:

    What exactly is the proof?

    In your opinion ℵo unit fractions are identical because they sit at the
    same x, but they differ because they are ℵo different unit fractions.

    Your opinion is the death of logic.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Python@21:1/5 to All on Sat Sep 7 15:53:23 2024
    Le 07/09/2024 à 14:55, WM a écrit :
    On 07.09.2024 04:01, Richard Damon wrote:
    On 9/6/24 8:12 AM, WM wrote:
    On 05.09.2024 21:57, Jim Burns wrote:
    On 9/5/2024 9:59 AM, WM wrote:

    NUF(x) increases from 0 to more.

    ...at 0.

    No. NUF(x) counts the unit fractions between 0 and x. Between 0 and 0
    there is no unit fraction. NUF(0) = 0.

    But it CAN'T for the values of x that are finite, as for ANY finite
    number, there is an infinite number of unit factions below it, so it
    can't ever have a finite value for any finite x.

    This idea must be dropped.

    Now YOU must be dropped. Fired. Forced to give your wages back and put
    in jail.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Python@21:1/5 to All on Sat Sep 7 16:05:24 2024
    Le 07/09/2024 à 15:03, WM a écrit :
    On 07.09.2024 14:37, Richard Damon wrote:
    On 9/7/24 8:04 AM, WM wrote:

    NUF(x) changes by 1 because a change by more at any x would count
    more different unit fractions 1/n,  1/m, 1/k, ... which are identical
    because they are the same x = 1/n = 1/m = 1/k = ... .

    And thus is always has a value of aleph_0 for all x > 0, since there
    is always aleph_0 unit fractions below and finite positive x value.

    Stop that nonsense. ℵo unit fractions cannot fit into every interval (0, x).

    Of course they can.

    "There's Plenty of Room at the Bottom" — Richard Feynman.

    The distance between two unit fractions already is larger.

    Some are, but for ℵo pairs of them they be arbitrary small
    (i.e. < x).

    How can you be so wrong on such elementary stuff Crank Mückenheim?

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Sat Sep 7 10:49:41 2024
    On 9/7/24 9:33 AM, WM wrote:
    On 07.09.2024 15:21, Richard Damon wrote:
    On 9/7/24 9:07 AM, WM wrote:
    On 07.09.2024 13:36, Moebius wrote:
    For all x > 0: NUF(x) = aleph_0 (no "change" at any x)

    Stop that nonsense. ℵo unit fractions and their distances do not fit
    into every interval (0, x). The distance between any pair of unit
    fractions is larger.

    Of course they do.

    The distance is made of 2^ℵo points. Every x > 0 can mean 3 points.

    Regards, WM



    In other words you are just admitting your being stupid.

    Every X is just the point itself, not "3 points".

    And, there is no reason to add up all the combinations of distances,
    just the ordered set of each unit fraction to its next smaller.

    All those add up to less than x, so they fit.

    Sorry, you are just proving how stupid your are.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Sat Sep 7 10:53:19 2024
    On 9/7/24 9:49 AM, WM wrote:
    On 07.09.2024 15:36, joes wrote:

    What exactly is the proof?

    In your opinion ℵo unit fractions are identical because they sit at the same x, but they differ because they are ℵo different unit fractions.

    Your opinion is the death of logic.

    Regards, WM

    Who said they sat at the same x? That is your idea because you can't
    understand unbounded mathematics.

    YOUR claims just prove that YOUR logic has blown itself to smithereens
    when you pushed it pasts its limits by using it on an unbounded number
    system,

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Sat Sep 7 10:51:04 2024
    On 9/7/24 9:45 AM, WM wrote:
    On 07.09.2024 15:37, joes wrote:
    Am Sat, 07 Sep 2024 15:03:35 +0200 schrieb WM:

    By the way this is independent of the existence of NUF.
    Why can they not „fit”?

    Because ℵo unit fractions have ℵo gaps. We can use one of the gaps as x
    0.

    Regards, WM


    But you started with that x, so it was fixed to begin with.

    From that x, we can build aleph_0 unit fractions below it.

    You are just showing you don't understand what you are talking about.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Sat Sep 7 10:58:16 2024
    On 9/7/24 9:41 AM, WM wrote:
    On 07.09.2024 15:33, joes wrote:
    Am Fri, 06 Sep 2024 22:52:37 +0200 schrieb WM:

    But there is an x immediately after 0. What else should be there?

    You in particular should know the reals are dense. There is no
    „immediately after”.

    In actual infinity all points are there. If you believe that between
    every pair of points points can be inserted - and that infinitely often
    - then you apply potential infinity. In actual infinity all points are
    there from the beginning without infinite processing.

    Regards, WM

    Yes, all the points are there, and they are infinitely dense, so there
    are no "adjacent" points.

    How did you get your "actual infinity" without doing "infinite" processing?

    This seems to be your problem. Finite processing can't complete an
    infinite entity.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Python@21:1/5 to All on Sat Sep 7 16:58:40 2024
    Le 07/09/2024 à 16:51, Richard Damon a écrit :
    On 9/7/24 9:45 AM, WM wrote:
    On 07.09.2024 15:37, joes wrote:
    Am Sat, 07 Sep 2024 15:03:35 +0200 schrieb WM:

    By the way this is independent of the existence of NUF.
    Why can they not „fit”?

    Because ℵo unit fractions have ℵo gaps. We can use one of the gaps as
    x  > 0.

    Regards, WM


    But you started with that x, so it was fixed to begin with.

    From that x, we can build aleph_0 unit fractions below it.

    You are just showing you don't understand what you are talking about.

    Sure he is. But he's not the only one on Usenet (Hachel, Olcott, etc.)

    The real issue here is that THE GUY IS TEACHING IN AN ACADEMIC
    INSTITUTION IN GERMANY!!!

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Sat Sep 7 11:02:44 2024
    On 9/7/24 9:31 AM, WM wrote:
    On 07.09.2024 14:58, Richard Damon wrote:
    On 9/7/24 8:55 AM, WM wrote:
    On 07.09.2024 04:01, Richard Damon wrote:

    But it CAN'T for the values of x that are finite, as for ANY finite
    number, there is an infinite number of unit factions below it, so it
    can't ever have a finite value for any finite x.

    This idea must be dropped.

    Then the idea that NUF(x) "increases by one" at the values of "unit
    fractions" must be dropped.

    Sorry, you can't have one without the other.

    Then logic breaks down because identical elements differ.
    The unit fractions are identical because they sit at the same x, but
    they differ because they are ℵo different unit fractions.

    Logic or the successor axiom? Without the former the latter would be
    useless.

    Regards, WM


    Why do you say they are all a x, they are all BELOW x, as there is room
    for them as x is a positive finite value.

    You are just showing you don't understand what you are talking about, as
    you like to begin with impossible assumptions. (Because you assume the
    infinite works just like the finite, which it doesn't).


    No problem with the successor axiom, you just can't find a "first" to
    take the successor of, as the unit fractions are counted by successor
    from the other end, and there is no "smallest" to start counting from at
    that end.

    This just reveals your insanity.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to Ross Finlayson on Sat Sep 7 12:27:19 2024
    On 9/7/24 12:14 PM, Ross Finlayson wrote:
    On 09/07/2024 08:34 AM, Ross Finlayson wrote:
    On 09/07/2024 05:57 AM, Richard Damon wrote:
    On 9/6/24 11:00 PM, Ross Finlayson wrote:
    On 09/06/2024 07:01 PM, Richard Damon wrote:
    On 9/6/24 8:07 AM, WM wrote:
    On 06.09.2024 05:08, Richard Damon wrote:
    On 9/5/24 10:08 AM, WM wrote:

    NUF(x) must grow. It cannot grow by more than 1 at any x.

    This is NOT the "ancient" idea of infinity,

    NUF(x) must grow. It cannot grow by more than 1 at any x.
    Right or wrong in your opinion?

    Regards, WM


    Only if it exists.

    If it does, it must be counting some sub-finite values as "unit
    fractions" that are not the reciprocal of the Natural Numbers (since >>>>> there is no smallest of those unit fractions to count from).

    So, either it is counting some sub-finite values (actually a lot of
    them
    a countable infinity of them) or it just doesn't exist.

    Maybe that is your dark numbers, these sub-finite numbers that are
    reciprocals of some post-finite values above the infinite set of
    Natural
    Numbers (which have no upper bound) and are below Omega.

    That's a remarkable supposition, I wonder how you'd imagine
    both to satisfy to yourself and others that thusly is a
    "consistent" form, of course which only requires "internal
    consistency" for its own sake, then besides, to suffer the
    running of the gauntlet, of those who'd insist it contradicted
    theirs. For, their are simple inductive arguments that nothing
    ever happens or is, at all.

    I sort of appreciate the sentiment, though, that "infinite"
    is big enough to have quite a range.



    The problem with "consistancy" is that WM's mathematicss isn't
    consistent with the full Natural Numbers, and unlikely to be helped with >>> the addition of something even more esoteric.

    His work doesn't define the set well enough to actually define how it
    must work, and the best answer is likly to just adopt one of the
    existing set of sub-finite number, it just needs to have a countably
    infinite subset of values that can be reasonable defined as "unit
    fractions".


    Maybe it'd do better with less.

    How about this, imagine it was your duty to convince a panel of
    mathematicians that something that made for the most properties
    possible of the notion of an iota-value or least-positive-rational,
    had a way to define this thing. Is it any different than f(1) for
    n/d, d-> oo, n -> d, modeling a not-a-real-function as a limit of
    real functions?

    Or does that just mean crazy-town to you? The crazy-town here
    is actually sort of crazy-town, like, you walk out on the streets
    and at various intervals encounter derelict indigents who are
    entirely insane, on most given Tuesdays.

    How do you keep your sanity in crazy-town, or help rehabilitate
    crazy-town? Among the ideas that nothing can be crazy if it's
    all consistent, in the infinite, get into things like Hausdorff's
    constructible universe, and Skolem's countable universe, or,
    "model of ZF", if "universe" makes no sound to you.



    You might aver "nobody does that" and that
    would be wrong - every day there's Dirichlet
    and Poincare and Dirac and there's time-ordering
    and making the derivation of Fourier series and
    most usually an equi-partitioning of a unit interval
    as according to a large number N in a sort of
    reverse delta-epsilonics, in fact it suffices to
    say that without such a notion of equi-partitioning
    infinitely a unit interval there'd be no modularity
    of distance at all.

    In fact it was in the physics courses where it was
    introduced "not-a-real-function yet with real
    analytical character as modeled as a (continuum)
    limit of real functions", Dirac delta, which is only
    so _in the limit_ and just like calculus only perfect
    and so _in the limit_, that it's first little bit is just
    like its last little bit.

    And non-zero, ....


    And if you've never heard of that then congratulations,
    here's a new word for your vocabulary.



    Oh, I've heard, and used, the Dirac Delta Function, which is a "strange"
    beast that falls at the edges of normality.

    The issue that WM seems to miss is that as you move from the very normal
    finite world of very simple arithmetic to the more esoteric world some
    of the common just assumable properties go away, and intuition gets
    broken, and you need to decide, do I keep my intuition, and need to stay
    out of that realm, or am I willing to accept that some things break the
    rules I am used to in order to gain the higher order properties of the
    system.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Sat Sep 7 15:01:09 2024
    On 9/7/2024 7:02 AM, WM wrote:
    On 07.09.2024 01:51, Jim Burns wrote:
    On 9/6/2024 4:52 PM, WM wrote:

    Between 0 and your defined x or epsilon,
    not between 0 and every possible x.

    If x > 0  then there is ⅟⌊1+⅟x⌋  between 0 and x

    ...strictly between.
    x > ⅟⌊1+⅟x⌋ > 0

    Then identical unit fractions differ.

    Identical unit fractions are identical.
    Different unit fractions are different.
    In other news,
    triangles have three sides.

    They are identical because
    NUF(x) counts them at the same x,

    Counting.at.x a unit.fraction.in.⅟ℕᵈᵉᶠ∩(0,x)
    does not mean the unit fraction is at x

    No unit fraction in ⅟ℕᵈᵉᶠ∩(0,x) is at x.

    Different unit fractions are different.

    but they differ because
    NUF(x) counts more than 1

    ...unit fractions at different points, none x...

    at this x.

    ⅟⌊1+⅟x⌋ is not between 0 and every possible x′ > 0
    but ⅟⌊1+⅟x⌋ doesn't need to be.
    The claim is "between 0 and x".

    You (WM) think ⅟⌊1+⅟x⌋ needs every possible
    because
    you think a quantifier shift is reliable.
    A quantifier shift is not reliable.

    A quantifier shift is not reliable.

    That is no quantifier shift but simplest logic.

    | ∀x ∈ R⁺:
    | ∃u ∈ ⅟ℕᵈᵉᶠ:
    | u < x

    ❀❀❀❀❀❀
    ❀ SHIFT ❀
    ❀❀❀❀❀❀

    🛇 ∃u ∈ ⅟ℕᵈᵉᶠ:
    🛇 ∀x ∈ R⁺:
    🛇 u < x

    Between 0 and x
    there are more.than.any.k<ℵ₀ unit fractions.

    Between 0 and every epsilon you can define.

    Between 0 and any epsilon satisfying my description.

    ⎛ Each ε > 0 is least.upper.bound of
    ⎜ a foresplit of all positive rationals.

    ⎜ Each positive rational is
    ⎜ the ratio of two positive naturals.

    ⎜ Each positive rational can be
    ⎝ counted.to from 1

    I haven't made a claim for other epsilons.

    Fine.
    There I agree.
    Every of your epsilons has
    ℵo smaller unit fractions in (0, eps).

    Each one of my ε > 0 has, in (0,ε),
    more.than.any.k<ℵ₀ unit.fractions ⅟n
    such that n can be counted.to from 1

    ⎛ ε = lub.S
    ⎜ ℚ⁺ ⊇ S ≠ {}
    ⎜ S ∋ p/q ≤ ε
    ⎜ p,q ∈ ℕᵈᵉᶠ
    ⎜ let n = (q+p)÷p [÷ int.div]
    ⎜ ℕᵈᵉᶠ ∋ n > ⅟ε
    ⎜ ⅟ℕᵈᵉᶠ ∋ ⅟n < ε

    ⎜ ∀j ∈ ℕᵈᵉᶠ: ⅟(n+j) < ε
    ⎝ |ℕᵈᵉᶠ| = ℵ₀

    This proves dark numbers.

    A quantifier shift 'proves' darkᵂᴹ.numbers,
    or it would prove if it weren't unreliable.

    ⎛ Quantifier shifts are unreliable
    ⎜ _even if_
    ⎝ someone lies and says they aren't using one.

    Darkᵂᴹ δ
    0 < δ <ᵉᵃᶜʰ ⅟ℕᵈᵉᶠ
    proves that,
    0 < δ ≤ lub.⅟ℕᵈᵉᶠ
    ⎛ ½⋅lub.⅟ℕᵈᵉᶠ <ᵉᵃᶜʰ ⅟ℕᵈᵉᶠ
    ⎝ ¬(½⋅lub.⅟ℕᵈᵉᶠ <ᵉᵃᶜʰ ⅟ℕᵈᵉᶠ)

    An impossible consequence proves no.darkᵂᴹ.numbers.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Sun Sep 8 02:17:45 2024
    Am 07.09.2024 um 23:51 schrieb Chris M. Thomasson:

    The unit fractions are identical because they sit at the same x, but
    they differ because they are ℵo different unit fractions.

    Mückenheim, für jedes x e IR, x > 0, sind die "ℵo different unit
    fractions" 1/ceil(1/x + 1), 1/ceil(1/x + 2), 1/ceil(1/x + 3), ...
    allesamt KLEINER als x. Außerdem sind sie paarweise verschieden. Heißt:
    An,m e IN: n =/= m -> 1/ceil(1/x + n) =/= 1/ceil(1/x + m). Also, nein,
    they DON'T "sit at the same x".

    Man kann das auch so hinschreiben: Für jedes x e IR, x > 0:

    0 < ... < 1/ceil(1/x + 3) < 1/ceil(1/x + 2) < 1/ceil(1/x + 1) < x.

    Dein Gelaber wird zunehmend wirrer, Mückenheim.

    ____________________________________________________________________

    Man kann da auch gleich den "Beweis" für den Umstand einflechten, dass
    es keinen kleinsten Stammbruch gibt:

    0 < ... < 1/(1/s + 1) < s < ... < 1/ceil(1/x + 3) < 1/ceil(1/x +
    2) < 1/ceil(1/x + 1) < x.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to Ross Finlayson on Sat Sep 7 20:29:48 2024
    On 9/7/2024 3:13 PM, Ross Finlayson wrote:
    On 09/07/2024 12:01 PM, Jim Burns wrote:

    [...]

    Aristotle has both _prior_ and _posterior_ analytics.

    ⎛ In the _Prior Analytics_ syllogistic logic is considered
    ⎜ in its formal aspect; in the _Posterior_ it is considered
    ⎜ in respect of its matter. The "form" of a syllogism lies
    ⎜ in the necessary connection between the premises and
    ⎜ the conclusion. Even where there is no fault in the form,
    ⎜ there may be in the matter, i.e. the propositions of which
    ⎜ it is composed, which may be true or false, probable or
    ⎜ improbable.

    ⎜ When the premises are certain, true, and primary, and
    ⎜ the conclusion formally follows from them,
    ⎜ this is demonstration, and produces scientific knowledge
    ⎜ of a thing. Such syllogisms are called apodeictical,
    ⎜ and are dealt with in the two books of
    ⎜ the _Posterior Analytics_

    -- https://en.wikipedia.org/wiki/Posterior_Analytics

    So, when you give him
    a perfectly good syllogism with which he disagrees,
    he has either of prior or posterior to deconstruct
    either posterior or prior,

    Wikipedia seems to say that
    syllogisms are prior, and
    use of syllogisms is posterior.

    They don't seem to be 'either.or', but 'both.and'.

    That cheers me up considerably.
    The idea I brought away from your (RF's) post was that,
    if Aristotle didn't like an result,
    he could ignore it and use a different method,
    lather, rinse, repeat unit he got an answer he liked.

    That would make those methods worthless.
    If a method or cluster of methods only gives you
    what you _want_
    throw them all away and go do what you want.
    It's the same result, with less time and effort.

    However, when I read Wikipedia,
    I think that, perhaps,
    analysis is not a waste of time and effort, after all.

    thusly not allowing himself to be fooled
    by otherwise perfectly and as-far-as-the-eye-can-see
    linear induction,
    because that would leave a fool of him.

    It would seem to be impossible to be fooled,
    if the "correct" answer always turns out to be
    the answer one had before investigating,
    if one keeps throwing out and trying again.

    I have a strong suspicion that things don't work that way.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Sun Sep 8 02:15:48 2024
    Am 07.09.2024 um 23:51 schrieb Chris M. Thomasson:

    The unit fractions are identical because they sit at the same x, but
    they differ because they are ℵo different unit fractions.

    Mückenheim, für jedes x e IR, x > 0, sind die "ℵo different unit
    fractions" 1/ceil(1/x + 1), 1/ceil(1/x + 2), 1/ceil(1/x + 3), ...
    allesamt KLEINER als x. Außerdem sind sie paarweise verschieden. Heißt:
    An,m e IN: n =/= m -> 1/ceil(1/x + n) =/= 1/ceil(1/x + m). Also, nein,
    they DON'T "sit at the same x".

    Man kann das auch so hinschreiben: Für jedes x e IR, x > 0:

    0 < ... < 1/ceil(1/x + 3) < 1/ceil(1/x + 2) < 1/ceil(1/x + 3) < x.

    Dein Gelaber wird zunehmend wirrer, Mückenheim.

    ____________________________________________________________________

    Man kann da auch gleich den "Beweis" für den Umstand einflechten, dass
    es keinen kleinsten Stammbruch gibt:

    0 < ... < 1/(1/s + 1) < s < ... < 1/ceil(1/x + 3) < 1/ceil(1/x +
    2) < 1/ceil(1/x + 3) < x.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Sun Sep 8 08:33:03 2024
    Am Sat, 07 Sep 2024 15:08:38 +0200 schrieb WM:
    On 07.09.2024 04:01, Richard Damon wrote:
    On 9/6/24 4:40 PM, WM wrote:
    On 06.09.2024 14:38, joes wrote:
    Am Fri, 06 Sep 2024 14:12:29 +0200 schrieb WM:

    0 < ... < ⅟⌊4+⅟x⌋ < ⅟⌊3+⅟x⌋ < ⅟⌊2+⅟x⌋ < ⅟⌊1+⅟x⌋ < x
    0 is smaller than all that. Therefore there is no increase at 0.
    x is larger than all that. Therefore your x is not the least one
    posiible.
    Therefore no x can be the least unit fraction.
    No definable x. No epsilon.
    Which means no "Unit Fraction" as the reciprical of a Natural Number,
    since they are all definable.
    All natural numbers which you recognize are definable.
    Great, it all works out in the end.

    Thus, your NUF must also be counting some sub-finite values, or it just
    doesn't exist.
    It exists. It counts definable numbers as well as sub-finitely definale numbers.
    As we knew, you’re not working in the reals but with some extension.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to Ross Finlayson on Sun Sep 8 15:13:29 2024
    On 9/8/2024 11:39 AM, Ross Finlayson wrote:
    On 09/07/2024 07:29 PM, Ross Finlayson wrote:
    On 09/07/2024 05:29 PM, Jim Burns wrote:
    On 9/7/2024 3:13 PM, Ross Finlayson wrote:

    Aristotle has both _prior_ and _posterior_ analytics.

    So, when you give him
    a perfectly good syllogism with which he disagrees,
    he has either of prior or posterior to deconstruct
    either posterior or prior,

    Wikipedia seems to say that
    syllogisms are prior, and
    use of syllogisms is posterior.

    They don't seem to be 'either.or', but 'both.and'.

    So, being constructive, constructive criticism,
    when I look at the outcome of
    otherwise a proof by contradiction to be rejected,
    that a "strongly constructivist" view requires that
    it's immaterial the order of the introduction of
    any stipulations,
    where
    in the usual syllogism's proof by contradiction,
    whatever non-logical term is introduced last
    sort of wins,
    when
    if the terms are discovered and evaluated
    in an arbitrary order,
    it's arbitrary which decides and which is decided.

    Formally
    (which is what I think 'by prior analysis' means),
    a proof by contradiction only shows that
    _one of_ our assumptions is false.

    However,
    of those assumptions,
    some are better supported than others.
    This is when posterior analysis enters the ring.

    Consider Boolos's ST
    ⎛ ∃{}
    ⎜ ∃z = x∪{y}
    ⎝ extensionality

    Those are assumptions.
    They are very un.challenging assumptions,
    but that is why we select them as starters.
    I am currently engaging in posterior analysis, I think.

    We can follow those with a list of _definitions_
    which describe natural and rational numbers
    in the language of ST.
    ⎛ 0 := {}
    ⎜ k+1 := k∪{k}
    ⎜ ℕ(k) :⇔
    ⎜ (k = 0 ∨ k ∋ 0) ∧
    ⎜ (∀j ∈ k+1: (∃i ∈ j: i+1=j) ⇔ j≠0)
    ⎝ ...

    Definitions aren't assumptions.
    They are more like public service announcements,
    informing "the public"
    ⎛ let us say: the phone.booth.sized crowd
    ⎝ which reads my posts
    what it means when I write 'foo'.

    I'm not sure whether definitions stand
    with prior or posterior analysis.

    There is a very strong assumption that
    I mean that which I say I mean,
    an assumption which does not extend to
    an assumption that
    that which I mean is correct, or even makes sense.

    Then there are assumptions made
    for the purpose of 'proving' contradictions,
    and thereby being themselves disproved.
    ⎛ √2 ∈ ℚ
    ⎝ ...

    Assume √2 ∈ ℚ
    Prove a contradiction.
    Thereby prove that _one of_
    ⎛ ∃{}
    ⎜ ∃z = x∪{y}
    ⎜ extensionality
    ⎝ √2 ∈ ℚ
    is false.

    But the first three assumptions, ST, are
    very un.challenging assumptions -- by design.
    Is ∃{} false, or is √2 ∈ ℚ false?
    Is ∃z = x∪{y} false, or is √2 ∈ ℚ false?
    Is extensionality false, or is √2 ∈ ℚ false?

    Posterior analysis(?) suggests √2 ∈ ℚ is false.
    It is not as bullet.proof as prior analysis(?),
    but it is damn good.

    Then,
    that Russell's retro-thesis is
    simply not a fact, logically, [...]

    What do you mean by "Russell's retro-thesis"?

    Yes, I know about
    Russell's "set" of all non.self.membered sets.
    It would be helpful if you (RF) simply stated,
    without embroidery, your own stance
    with regard to Russell's "set".

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Sun Sep 8 21:39:28 2024
    On 07.09.2024 21:01, Jim Burns wrote:
    On 9/7/2024 7:02 AM, WM wrote:

    Different unit fractions are different.

    Therefore there is only one the smallest one.

    They are identical because
    NUF(x) counts them at the same x,

    Counting.at.x a unit.fraction.in.⅟ℕᵈᵉᶠ∩(0,x)
    does not mean the unit fraction is at x

    NUF counts only unit fractions at their positions.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Python on Sun Sep 8 21:28:44 2024
    On 07.09.2024 16:05, Python wrote:
    Le 07/09/2024 à 15:03, WM a écrit :

    Stop that nonsense. ℵo unit fractions cannot fit into every interval
    (0, x).

    Of course they can.

    Select any gap between one of the first ℵo unit fractions and its
    neighbour. Call its size x. Then ℵo unit fractions cannot fit into the interval (0, x), independent of the actual size.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Sun Sep 8 21:48:11 2024
    On 07.09.2024 16:49, Richard Damon wrote:

    All those add up to less than x, so they fit.
    Select any gap between one of the first ℵo unit fractions and its
    neighbour. Call its size x. Then ℵo unit fractions cannot fit into the interval (0, x), independent of the actual size.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Sun Sep 8 21:52:56 2024
    On 07.09.2024 16:51, Richard Damon wrote:
    On 9/7/24 9:45 AM, WM wrote:

    Because ℵo unit fractions have ℵo gaps. We can use one of the gaps as
    x  > 0.

    But you started with that x, so it was fixed to begin with.

    No, it is the size of one of the gaps between two adjacent unit
    fractions, ℵo of which are claimed to fit into (0, x).

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Sun Sep 8 20:06:20 2024
    Am Sun, 08 Sep 2024 21:28:44 +0200 schrieb WM:
    On 07.09.2024 16:05, Python wrote:
    Le 07/09/2024 à 15:03, WM a écrit :

    Stop that nonsense. ℵo unit fractions cannot fit into every interval
    (0, x).
    Select any gap between one of the first ℵo unit fractions and its neighbour. Call its size x. Then ℵo unit fractions cannot fit into the interval (0, x), independent of the actual size.
    What’s your point? Of course the distances decrease.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Sun Sep 8 16:11:25 2024
    On 9/8/24 3:48 PM, WM wrote:
    On 07.09.2024 16:49, Richard Damon wrote:

    All those add up to less than x, so they fit.
    Select any gap between one of the first ℵo unit fractions and its
    neighbour. Call its size x. Then ℵo unit fractions cannot fit into the interval (0, x), independent of the actual size.

    Regards, WM



    But that is changing the value of x in the middle of the problem which
    isn't allowed.

    Given that new x, we can choose a new set of Aleph_0 unit fractions
    below that x.

    It seems your mind can't grasp the concept of infinite sets, which allow
    sets of the same cardinality to have one be the subset of the other.

    Yes, that would just blow the mind that is stuck in finite logic, where
    that doesn't work.

    That is why we get strangeness of things like x + 1 can be equal to x,
    as adding one to Aleph_0 doesn't change its value

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Sun Sep 8 20:16:11 2024
    Am Sat, 07 Sep 2024 15:45:08 +0200 schrieb WM:
    On 07.09.2024 15:37, joes wrote:
    Am Sat, 07 Sep 2024 15:03:35 +0200 schrieb WM:

    By the way this is independent of the existence of NUF.
    Why can they not „fit”?
    Because ℵo unit fractions have ℵo gaps. We can use one of the gaps as
    x > 0.
    What does this mean?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Sun Sep 8 16:21:39 2024
    On 9/8/2024 3:39 PM, WM wrote:
    On 07.09.2024 21:01, Jim Burns wrote:

    Different unit fractions are different.

    Therefore there is only one the smallest one.

    There aren't two smallest unit fractions,
    and no one has said otherwise.

    There isn't one smallest unit fraction because,
    for each ⅟k, ⅟(k+1) disproves ⅟k being smallest.

    There aren't two.
    There isn't one.
    There is no smallest unit fraction.

    They are identical because
    NUF(x) counts them at the same x,

    Counting.at.x a unit.fraction.in.⅟ℕᵈᵉᶠ∩(0,x)
    does not mean the unit fraction is at x

    NUF counts only unit fractions at their positions.

    strict NUFᑉ(x) ≥ NUFᑉᐧᵈᵉᶠ(x) = |⅟ℕᵈᵉᶠ∩(0,x)| does not count any unit fraction at x.

    0 < ⅟⌊2+⅟x⌋ < ⅟⌊1+⅟x⌋ < x

    NUF(x) ≥ 2 ∨ NUF(x) = 0

    NUF(x) ≠ 1

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Sun Sep 8 20:25:24 2024
    Am Sun, 08 Sep 2024 21:48:11 +0200 schrieb WM:
    On 07.09.2024 16:49, Richard Damon wrote:

    All those add up to less than x, so they fit.
    Select any gap between one of the first ℵo unit fractions and its
    neighbour. Call its size x. Then ℵo unit fractions cannot fit into the interval (0, x), independent of the actual size.
    Why?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Sun Sep 8 22:29:51 2024
    Am 08.09.2024 um 22:25 schrieb joes:
    Am Sun, 08 Sep 2024 21:48:11 +0200 schrieb WM:
    On 07.09.2024 16:49, Richard Damon wrote:

    All those add up to less than x, so they fit.

    Select any gap between one of the first ℵo unit fractions and its
    neighbour. Call its size x. Then ℵo unit fractions cannot fit into the
    interval (0, x), independent of the actual size.

    Why?

    Weiß niemand. Mückenheims Behauptungen werden immer absurder.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Python@21:1/5 to All on Sun Sep 8 22:34:01 2024
    Le 08/09/2024 à 21:28, Crank Mückenheim, aka WM a écrit :
    On 07.09.2024 16:05, Python wrote:
    Le 07/09/2024 à 15:03, WM a écrit :

    Stop that nonsense. ℵo unit fractions cannot fit into every interval
    (0, x).

    Of course they can.

    Select any gap between one of the first ℵo unit fractions and its neighbour. Call its size x.

    x = 1/k - 1/(k+1) = 1/[k*(k+1)] > 0

    Then ℵo unit fractions cannot fit into the
    interval (0, x), independent of the actual size.

    It can and it does : { 1/p : p > k*(k+1) } has cardinal ℵo,
    contains only unit fractions, and is a subset of (0, x)

    Ask one of your "students" if you don't understand, crank.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to Ross Finlayson on Mon Sep 9 00:59:52 2024
    On 9/8/2024 6:34 PM, Ross Finlayson wrote:
    On 09/08/2024 12:13 PM, Jim Burns wrote:

    [...]

    It's already been thoroughly elaborated and
    as attached to formalistic symbolry,
    that "Russell's thesis, of an antinomy" is that
    the set of
    the finite sets that don't contain themselves,
    exactly like the ordinals are mostly simply modeled to be,
    does and doesn't contain itself,

    No.
    The set of
    the finite non.self.membered sets
    is not itself a finite set.
    Therefore, it is not in itself.
    Secundum non datur.

    blowing wide open that
    there is a class of propositions
    external [to] "tertium non datur".

    It seems as though
    you (RF) should re.evaluate
    your reasoning here
    in light of the set of
    finite non.self.membered sets
    not itself being a finite set.

    Then,
    "Russell's retro-thesis", is
    "forget I, Russell I, said that,
    and now that Frege's out of the way,
    think me and Whitehead made 1 + 1 = 2,
    after this brief 0 = 1 as it were",
    asking you simply ignore his stated antinomy,
    and furthermore your own conscience
    as with regards to these matters.

    1.
    I wonder what your own conscientious response
    will be to the infiniteness of the set of
    all finite non.self.membered sets.

    2.
    It is an essential aspect of these discussions that
    whatever is not being discussed
    is not being discussed.

    That essential aspect seems to be
    what you (RF) consider
    hypocritically ignoring
    whatever is not being discussed.

    Consider that it is possible for there to be
    many discussions, with many different topics.
    It is true at the same time
    that
    nonstandard analysis can be pursued
    and
    the complete ordered field doesn't hold
    anything other than elements of
    the complete ordered field.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Moebius on Mon Sep 9 12:22:21 2024
    On 08.09.2024 22:29, Moebius wrote:
    Am 08.09.2024 um 22:25 schrieb joes:
    Am Sun, 08 Sep 2024 21:48:11 +0200 schrieb WM:
    On 07.09.2024 16:49, Richard Damon wrote:

    All those add up to less than x, so they fit.

    Select any gap between one of the first ℵo unit fractions and its
    neighbour. Call its size x. Then ℵo unit fractions cannot fit into the >>> interval (0, x), independent of the actual size.

    Why?

    Weiß niemand.

    ℵo unit fractions cannot fit into one of the ℵo intervals between two of them, because ℵo unit fractions occupy ℵo intervals.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to joes on Mon Sep 9 12:24:39 2024
    On 08.09.2024 22:06, joes wrote:
    Am Sun, 08 Sep 2024 21:28:44 +0200 schrieb WM:
    On 07.09.2024 16:05, Python wrote:
    Le 07/09/2024 à 15:03, WM a écrit :

    Stop that nonsense. ℵo unit fractions cannot fit into every interval >>>> (0, x).
    Select any gap between one of the first ℵo unit fractions and its
    neighbour. Call its size x. Then ℵo unit fractions cannot fit into the
    interval (0, x), independent of the actual size.
    What’s your point? Of course the distances decrease.

    ℵo unit fractions cannot fit into one of the ℵo intervals between two of them, because ℵo unit fractions occupy ℵo intervals.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Python on Mon Sep 9 12:19:56 2024
    On 08.09.2024 22:34, Python wrote:
    Le 08/09/2024 à 21:28, Crank Mückenheim, aka WM a écrit :
    On 07.09.2024 16:05, Python wrote:
    Le 07/09/2024 à 15:03, WM a écrit :

    Stop that nonsense. ℵo unit fractions cannot fit into every interval >>>> (0, x).

    Of course they can.

    Select any gap between one of the first ℵo unit fractions and its
    neighbour. Call its size x.

    x = 1/k - 1/(k+1) = 1/[k*(k+1)] > 0

    Then ℵo unit fractions cannot fit into the interval (0, x),
    independent of the actual size.

    It can and it does

    Nonsense. ℵo unit fractions cannot fit into one of the ℵo intervals
    between two of them.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to joes on Mon Sep 9 12:36:22 2024
    On 08.09.2024 22:16, joes wrote:
    Am Sat, 07 Sep 2024 15:45:08 +0200 schrieb WM:
    On 07.09.2024 15:37, joes wrote:
    Am Sat, 07 Sep 2024 15:03:35 +0200 schrieb WM:

    By the way this is independent of the existence of NUF.
    Why can they not „fit”?
    Because ℵo unit fractions have ℵo gaps. We can use one of the gaps as
    x > 0.
    What does this mean?

    ℵo unit fractions are claimed to be smaller than every x > 0. If they
    are existing then I can choose as the x one of the ℵo intervals between
    two of them. Irrelevant which one, ℵo unit fractions do not fit into it.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Mon Sep 9 12:27:47 2024
    On 08.09.2024 22:11, Richard Damon wrote:
    On 9/8/24 3:48 PM, WM wrote:

    Select any gap between one of the first ℵo unit fractions and its
    neighbour. Call its size x. Then ℵo unit fractions cannot fit into the
    interval (0, x), independent of the actual size.

    But that is changing the value of x in the middle of the problem which
    isn't allowed.

    No.

    Given that new x, we can choose a new set of Aleph_0 unit fractions
    below that x.

    ℵo unit fractions are claimed to be smaller than every x > 0. If that is
    true then I can choose as the x one of the ℵo intervals between two of them.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Jim Burns on Mon Sep 9 12:39:02 2024
    On 08.09.2024 22:21, Jim Burns wrote:
    On 9/8/2024 3:39 PM, WM wrote:
    On 07.09.2024 21:01, Jim Burns wrote:

    Different unit fractions are different.

    Therefore there is only one the smallest one.

    There aren't two smallest unit fractions,
    and no one has said otherwise.

    Then there is only one.

    There isn't one smallest unit fraction because,
    for each ⅟k, ⅟(k+1) disproves ⅟k being smallest.

    There are unit fractions. If not two are smallest, then it is only one.

    There aren't two.
    There isn't one.

    Then there is no unit fraction.

    ℵo unit fractions cannot exist without 1, 2, 3, ... unit fractions before.

    Regards, WM



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  • From WM@21:1/5 to Richard Damon on Mon Sep 9 12:31:55 2024
    On 08.09.2024 22:11, Richard Damon wrote:
    On 9/8/24 3:52 PM, WM wrote:
    On 07.09.2024 16:51, Richard Damon wrote:
    On 9/7/24 9:45 AM, WM wrote:

    Because ℵo unit fractions have ℵo gaps. We can use one of the gaps >>>> as x  > 0.

    But you started with that x, so it was fixed to begin with.

    No, it is the size of one of the gaps between two adjacent unit
    fractions, ℵo of which are claimed to fit into (0, x).

    So it is the size of *ONE* of the gaps, you need to choose which one, as
    all the gaps are different sizes.

    And all gaps are occupied by the unit fractions. Hence every gap is too
    small.

    Remember, just as there is no smallest unit fraction, there is no
    smallest gap, so you can't specify choosing the smallest.

    The fact that the choice is for ANY, it requires you to actually CHOOSE
    one, and then we can find the Aleph_0 smaller.

    No. First you claim the unit fractions with their gaps. Then I choose
    one of them, irrelevant which one. Each one is smaller than all.

    Regards, WM

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  • From Richard Damon@21:1/5 to All on Mon Sep 9 07:40:26 2024
    On 9/9/24 6:22 AM, WM wrote:
    On 08.09.2024 22:29, Moebius wrote:
    Am 08.09.2024 um 22:25 schrieb joes:
    Am Sun, 08 Sep 2024 21:48:11 +0200 schrieb WM:
    On 07.09.2024 16:49, Richard Damon wrote:

    All those add up to less than x, so they fit.

    Select any gap between one of the first ℵo unit fractions and its
    neighbour. Call its size x. Then ℵo unit fractions cannot fit into the >>>> interval (0, x), independent of the actual size.

    Why?

    Weiß niemand.

    ℵo unit fractions cannot fit into one of the ℵo intervals between two of them, because ℵo unit fractions occupy ℵo intervals.

    Regards, WM


    You seem confused, the Aleph_0 unit fractions don't fit "between" unit fractions, but in the interval (0, x). Since (0 isn't a "unit fraction"
    you have your meaning messed up.

    When we lay out our Aleph_0 unit fractions, when you choose one of the
    gaps to put the new x into, we loose just a finite number of unit
    fractions that lied between the old x and the new x, and Aleph_0 minus
    any finite number is still Aleph_0.

    Yes, between two finite unit fractions will only be a finite number of
    other unit fractions (possibly 0) but the interval (0, x) isn't between
    two finite unit fractions as its starting point is not a unit fraction,
    and in fact isn't a finite number in the interval, but is the unbounded
    edge of the infinite number system which is dense in the area, so there
    is no point in the set on the boundary. (The point on the boundary is
    just outside the set).

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  • From Richard Damon@21:1/5 to All on Mon Sep 9 07:32:20 2024
    On 9/9/24 6:27 AM, WM wrote:
    On 08.09.2024 22:11, Richard Damon wrote:
    On 9/8/24 3:48 PM, WM wrote:

    Select any gap between one of the first ℵo unit fractions and its
    neighbour. Call its size x. Then ℵo unit fractions cannot fit into
    the interval (0, x), independent of the actual size.

    But that is changing the value of x in the middle of the problem which
    isn't allowed.

    No.

    Given that new x, we can choose a new set of Aleph_0 unit fractions
    below that x.

    ℵo unit fractions are claimed to be smaller than every x > 0. If that is true then I can choose as the x one of the ℵo intervals between two of them.

    Regards, WM


    No, because the claim is GIVEN an x, we can do "Y", that is make the
    Aleph_0 unit fractions below it. Until you have chosen your x, we don't
    need to provide those unit fractions, so, you can't use them to create
    your x.

    It seems your ignorance extends to ordering.

    To follow YOUR idea, then *YOU* get stuck in the infinite loop of every
    time you change your x, the unit fractions change so you need to change
    to another x, and the unit fractions change again.

    Its sort of like the problem with the request for the biggest number you
    can think of, because as soon as you think of it, you can imagine
    something bigger, but that doesn't show that there actually is a biggest
    number that actually exists, because our thinking of them doesn't make
    them come into existance, it was the original definition of them.

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  • From Richard Damon@21:1/5 to All on Mon Sep 9 07:47:59 2024
    On 9/9/24 6:31 AM, WM wrote:
    On 08.09.2024 22:11, Richard Damon wrote:
    On 9/8/24 3:52 PM, WM wrote:
    On 07.09.2024 16:51, Richard Damon wrote:
    On 9/7/24 9:45 AM, WM wrote:

    Because ℵo unit fractions have ℵo gaps. We can use one of the gaps >>>>> as x  > 0.

    But you started with that x, so it was fixed to begin with.

    No, it is the size of one of the gaps between two adjacent unit
    fractions, ℵo of which are claimed to fit into (0, x).

    So it is the size of *ONE* of the gaps, you need to choose which one,
    as all the gaps are different sizes.

    And all gaps are occupied by the unit fractions. Hence every gap is too small.

    But there is always room at the bottom, where the gaps keep getting smaller


    Remember, just as there is no smallest unit fraction, there is no
    smallest gap, so you can't specify choosing the smallest.

    The fact that the choice is for ANY, it requires you to actually
    CHOOSE one, and then we can find the Aleph_0 smaller.

    No. First you claim the unit fractions with their gaps. Then I choose
    one of them, irrelevant which one. Each one is smaller than all.

    Regards, WM



    Nope, I guess you don't understand what you claim means.

    How can a claim a set of values less then a SPECIFIC NUMBER if I don't
    have the number?

    Sorry, you are just proving your stupidity. YOuor logic is like proving
    you can't add two numbers together to get the sum, which you try to
    prove by asking for the sum, and then provide the two numbers that don't
    add up to it.

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  • From joes@21:1/5 to All on Mon Sep 9 11:46:55 2024
    Am Mon, 09 Sep 2024 12:22:21 +0200 schrieb WM:
    On 08.09.2024 22:29, Moebius wrote:
    Am 08.09.2024 um 22:25 schrieb joes:
    Am Sun, 08 Sep 2024 21:48:11 +0200 schrieb WM:
    On 07.09.2024 16:49, Richard Damon wrote:

    Select any gap between one of the first ℵo unit fractions and its
    neighbour. Call its size x. Then ℵo unit fractions cannot fit into
    the interval (0, x), independent of the actual size.
    Why?
    ℵo unit fractions cannot fit into one of the ℵo intervals between two of them, because ℵo unit fractions occupy ℵo intervals.
    What? It’s about the size, not the number of intervals.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to All on Mon Sep 9 11:49:41 2024
    Am Mon, 09 Sep 2024 12:27:47 +0200 schrieb WM:
    On 08.09.2024 22:11, Richard Damon wrote:
    On 9/8/24 3:48 PM, WM wrote:

    Select any gap between one of the first ℵo unit fractions and its
    neighbour. Call its size x. Then ℵo unit fractions cannot fit into the >>> interval (0, x), independent of the actual size.
    But that is changing the value of x in the middle of the problem which
    isn't allowed.
    Given that new x, we can choose a new set of Aleph_0 unit fractions
    below that x.
    ℵo unit fractions are claimed to be smaller than every x > 0. If that is true then I can choose as the x one of the ℵo intervals between two of them.
    More precisely: every positive x has infinitely many smaller unit
    fractions (mind the quantifier order). A number is not an interval.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to All on Mon Sep 9 11:51:33 2024
    Am Mon, 09 Sep 2024 12:31:55 +0200 schrieb WM:
    On 08.09.2024 22:11, Richard Damon wrote:
    On 9/8/24 3:52 PM, WM wrote:
    On 07.09.2024 16:51, Richard Damon wrote:
    On 9/7/24 9:45 AM, WM wrote:

    Because ℵo unit fractions have ℵo gaps. We can use one of the gaps >>>>> as x  > 0.
    But you started with that x, so it was fixed to begin with.
    No, it is the size of one of the gaps between two adjacent unit
    fractions, ℵo of which are claimed to fit into (0, x).
    So it is the size of *ONE* of the gaps, you need to choose which one,
    as all the gaps are different sizes.
    And all gaps are occupied by the unit fractions. Hence every gap is too small.
    In which sense are the gaps „occupied”?

    Remember, just as there is no smallest unit fraction, there is no
    smallest gap, so you can't specify choosing the smallest.
    The fact that the choice is for ANY, it requires you to actually CHOOSE
    one, and then we can find the Aleph_0 smaller.
    No. First you claim the unit fractions with their gaps. Then I choose
    one of them, irrelevant which one. Each one is smaller than all.
    Each gap is smaller than all gaps?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From Richard Damon@21:1/5 to All on Mon Sep 9 07:55:12 2024
    On 9/9/24 6:36 AM, WM wrote:
    On 08.09.2024 22:16, joes wrote:
    Am Sat, 07 Sep 2024 15:45:08 +0200 schrieb WM:
    On 07.09.2024 15:37, joes wrote:
    Am Sat, 07 Sep 2024 15:03:35 +0200 schrieb WM:

    By the way this is independent of the existence of NUF.
    Why can they not „fit”?
    Because ℵo unit fractions have ℵo gaps. We can use one of the gaps as >>> x > 0.
    What does this mean?

    ℵo unit fractions are claimed to be smaller than every x > 0. If they
    are existing then I can choose as the x one of the ℵo intervals between
    two of them. Irrelevant which one, ℵo unit fractions do not fit into it.

    Regards, WM


    You seem to be conusing "below" and "into".

    Is your English that bad?

    The gaps (each | is a unit fraction)

    .... | gap | gap | gap | ... gaps | x

    the claim is that there are aleph_0 gaps between the unit fractions below x.

    Moving x down to one of the gaps doesn't mean we need to compress all
    those unit fractions into just one of the gaps.

    BELOW the x, is still ALeph_0 unit fractions, as by choosing a gap, you
    only removed a finite number of the Aleph_0 unit fractions, so Aleph_0
    still remain.

    The fact that you don't understand that Aleph_0 - a finite number =
    Aleph_0 is your own problem, but *IS* a fact of mathematics.

    Note, the interval (0, x) doesn't "begin" at a unit fraction, in part
    because there is no point it begins at, as our number system is DENSE,
    and so the lower boundry is 0, so the only point on the boundry there is
    0, but that is OUTSIDE the interval. there is no "point" just inside, as
    it is an unbounded set.

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  • From WM@21:1/5 to joes on Mon Sep 9 16:57:00 2024
    On 09.09.2024 13:46, joes wrote:
    Am Mon, 09 Sep 2024 12:22:21 +0200 schrieb WM:

    ℵo unit fractions cannot fit into one of the ℵo intervals between two of >> them, because ℵo unit fractions occupy ℵo intervals.
    What? It’s about the size, not the number of intervals.

    One of ℵo intervals is smaller than ℵo intervals.
    Unit fractions are real points on the real line. Therefore there is a beginning, one or more smallest unit fractions.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Mon Sep 9 17:01:35 2024
    On 09.09.2024 13:47, Richard Damon wrote:
    On 9/9/24 6:31 AM, WM wrote:

    And all gaps are occupied by the unit fractions. Hence every gap is
    too small.

    But there is always room at the bottom, where the gaps keep getting smaller

    They all are present from the start. I simply choose a gap that is too
    small to contain ℵo unit fractions.
    How can a claim a set of values less then a SPECIFIC NUMBER if I don't
    have the number?

    I claim that all unit fractions are existing as real points of the real
    line. Therefore there is a first one. NUF(x) cannot increase without
    passing 1 when real points are counted. Your ℵo points cannot exist
    without including 1, 2, 3 first points.

    Regards, WM

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  • From Python@21:1/5 to All on Mon Sep 9 16:32:11 2024
    Le 09/09/2024 à 12:19, Crank Mückenheim, aka WM a écrit :
    On 08.09.2024 22:34, Python wrote:
    Le 08/09/2024 à 21:28, Crank Mückenheim, aka WM a écrit :
    On 07.09.2024 16:05, Python wrote:
    Le 07/09/2024 à 15:03, WM a écrit :

    Stop that nonsense. ℵo unit fractions cannot fit into every
    interval (0, x).

    Of course they can.

    Select any gap between one of the first ℵo unit fractions and its
    neighbour. Call its size x.

    x = 1/k - 1/(k+1) = 1/[k*(k+1)] > 0

    Then ℵo unit fractions cannot fit into the interval (0, x),
    independent of the actual size.

    It can and it does

    Nonsense. ℵo unit fractions cannot fit into one of the ℵo intervals between two of them.

    (O, x) is NOT an interval between two unit fractions. It has, anyway,
    the same length that another interval that is between two neighboring
    unit fractions.

    Ask one your students^H^H^H^H^H^H^H^H^H victims. They know better
    than you.

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  • From WM@21:1/5 to Richard Damon on Mon Sep 9 16:53:32 2024
    On 09.09.2024 13:32, Richard Damon wrote:

    No, because the claim is GIVEN an x, we can do "Y", that is make the
    Aleph_0 unit fractions below it.

    You are in error. MY CLAIM is: Given ℵo unit fractions smaller than
    every x > 0, then I choose any of their gaps.

    Until you have chosen your x, we don't
    need to provide those unit fractions, so, you can't use them to create
    your x.

    You claim that ℵo unit fractions are smaller than ANY x > 0. That is
    simply fool's crap.

    To follow YOUR idea, then *YOU* get stuck in the infinite loop of every
    time you change your x, the unit fractions change so you need to change
    to another x, and the unit fractions change again.

    I do not change anything. There are unit fractions as real points on the
    real line. These real points are really real and therefore must start somewhere. Hence there is a beginning, one ore more first points.

    Regards, WM

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  • From WM@21:1/5 to joes on Mon Sep 9 17:08:49 2024
    On 09.09.2024 13:49, joes wrote:
    Am Mon, 09 Sep 2024 12:27:47 +0200 schrieb WM:
    On 08.09.2024 22:11, Richard Damon wrote:
    On 9/8/24 3:48 PM, WM wrote:

    Select any gap between one of the first ℵo unit fractions and its
    neighbour. Call its size x. Then ℵo unit fractions cannot fit into the >>>> interval (0, x), independent of the actual size.
    But that is changing the value of x in the middle of the problem which
    isn't allowed.
    Given that new x, we can choose a new set of Aleph_0 unit fractions
    below that x.
    ℵo unit fractions are claimed to be smaller than every x > 0. If that is >> true then I can choose as the x one of the ℵo intervals between two of
    them.
    More precisely: every positive x has infinitely many smaller unit
    fractions (mind the quantifier order).

    The quantifier order related to the problem is this: NUF(x) = ℵo means:
    There exist ℵo unit fractions smaller than any x > 0. If this is not
    true, then there are fewer. How many unit fractions are smaller than any
    x > 0. THAT is the question. None. But all are differente. Hence there
    must be a first one smaller than all other unit fractions. Note that
    real points are in question. Real points fixed on the real line.

    A number is not an interval.

    An interval has a length that can be expressed by a real number:
    1/n - 1/(n+1) = x .

    Then the interval (0, x) contains not all unit fractions, for instance
    not 1/n.

    Regards, WM


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  • From joes@21:1/5 to All on Mon Sep 9 15:15:07 2024
    Am Mon, 09 Sep 2024 16:57:00 +0200 schrieb WM:
    On 09.09.2024 13:46, joes wrote:
    Am Mon, 09 Sep 2024 12:22:21 +0200 schrieb WM:

    ℵo unit fractions cannot fit into one of the ℵo intervals between two >>> of them, because ℵo unit fractions occupy ℵo intervals.
    What? It’s about the size, not the number of intervals.
    One of ℵo intervals is smaller than ℵo intervals.
    What does this mean? This is way too terse.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to All on Mon Sep 9 15:14:45 2024
    Am Mon, 09 Sep 2024 17:01:35 +0200 schrieb WM:
    On 09.09.2024 13:47, Richard Damon wrote:
    On 9/9/24 6:31 AM, WM wrote:

    And all gaps are occupied by the unit fractions. Hence every gap is
    too small.
    But there is always room at the bottom, where the gaps keep getting
    smaller
    They all are present from the start. I simply choose a gap that is too
    small to contain ℵo unit fractions.
    How do you do that?

    How can a claim a set of values less then a SPECIFIC NUMBER if I don't
    have the number?
    I claim that all unit fractions are existing as real points of the real
    line. Therefore there is a first one. NUF(x) cannot increase without
    passing 1 when real points are counted. Your ℵo points cannot exist
    without including 1, 2, 3 first points.
    Those first points are on the right, obviously.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From WM@21:1/5 to Python on Mon Sep 9 17:15:23 2024
    On 09.09.2024 16:32, Python wrote:
    Le 09/09/2024 à 12:19, Prof. Dr. Mückenheim, aka WM a écrit :

    ℵo unit fractions cannot fit into one of the ℵo intervals
    between two of them.

    (O, x) is NOT an interval between two unit fractions.

    1/n - 1/(n+1) = x is an interval between two unit fraction. This
    interval is shifted to the origin, yielding the interval (0, x). It does
    not contain ℵo unit fractions. It does not contain 1/n.

    Note that unit fractions are points on the real line. Therefore there is
    a beginning. How many unit fractions can be smallerorequal than all unit fractions. This question proves the existence of a smallest unit fraction.

    Regards, WM

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  • From WM@21:1/5 to joes on Mon Sep 9 17:26:12 2024
    On 09.09.2024 17:14, joes wrote:
    Am Mon, 09 Sep 2024 17:01:35 +0200 schrieb WM:

    They all are present from the start. I simply choose a gap that is too
    small to contain ℵo unit fractions.
    How do you do that?

    I know that all exist.

    How can a claim a set of values less then a SPECIFIC NUMBER if I don't
    have the number?
    I claim that all unit fractions are existing as real points of the real
    line. Therefore there is a first one. NUF(x) cannot increase without
    passing 1 when real points are counted. Your ℵo points cannot exist
    without including 1, 2, 3 first points.
    Those first points are on the right, obviously.

    If ℵo points are there, then one is on the left-hand side. Note that
    they are real points on the real line. There cannot be more points
    unless they start with 1. Everything else is belief in ghosts of matheology

    Regards, WM

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  • From WM@21:1/5 to joes on Mon Sep 9 17:19:37 2024
    On 09.09.2024 13:51, joes wrote:
    Am Mon, 09 Sep 2024 12:31:55 +0200 schrieb WM:

    Al gaps are occupied by the unit fractions. Hence every gap is too
    small.
    In which sense are the gaps „occupied”?

    ℵo unit fractions cover a distance d which is the sum of the gaps
    between them.

    First you claim the unit fractions with their gaps. Then I choose
    one of them, irrelevant which one. Each one is smaller than all.
    Each gap is smaller than all gaps?

    The sum of all gaps is larger than one of them.

    Regards, WM

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  • From WM@21:1/5 to joes on Mon Sep 9 17:32:11 2024
    On 09.09.2024 17:15, joes wrote:
    Am Mon, 09 Sep 2024 16:53:32 +0200 schrieb WM:

    You claim that ℵo unit fractions are smaller than ANY x > 0.
    Yes. Not all the same ones of course.

    My question concerns same unit fractions only. Do ℵo unit fractions
    exist smaller than any x > 0? If not, how many same unit fractions exist smaller than any x > 0? How many are smalleror equal than all unit
    fractions?

    Regards, WM

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  • From Python@21:1/5 to All on Mon Sep 9 17:27:55 2024
    Le 09/09/2024 à 17:15, Crank Mückenheim, aka WM a écrit :
    On 09.09.2024 16:32, Python wrote:
    Le 09/09/2024 à 12:19, Crank Mückenheim, aka WM a écrit :

    ℵo unit fractions cannot fit into one of the ℵo intervals between two >>> of them.

    (O, x) is NOT an interval between two unit fractions.

    1/n - 1/(n+1) = x is an interval between two unit fraction.

    No. It is a number.

    This
    interval is shifted to the origin, yielding the interval (0, x). It does
    not contain ℵo unit fractions. It does not contain 1/n.

    1/n is not in (0, x). Sure. So what? Nevertheless there are Aleph_0 unit fractions in (0, x). No need for 1/n to be there, there far enough other fractions.

    [snip more nonsense]

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  • From joes@21:1/5 to All on Mon Sep 9 15:49:16 2024
    Am Mon, 09 Sep 2024 17:32:11 +0200 schrieb WM:
    On 09.09.2024 17:15, joes wrote:
    Am Mon, 09 Sep 2024 16:53:32 +0200 schrieb WM:

    You claim that ℵo unit fractions are smaller than ANY x > 0.
    Yes. Not all the same ones of course.
    My question concerns same unit fractions only. Do ℵo unit fractions
    exist smaller than any x > 0? If not, how many same unit fractions exist smaller than any x > 0? How many are smalleror equal than all unit
    fractions?
    That is a different question (quantifier order). Of course no unit
    fraction is smaller than every other unit fraction.
    (I don’t understand the „same” question.)

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to All on Mon Sep 9 15:51:35 2024
    Am Mon, 09 Sep 2024 17:26:12 +0200 schrieb WM:
    On 09.09.2024 17:14, joes wrote:
    Am Mon, 09 Sep 2024 17:01:35 +0200 schrieb WM:

    They all are present from the start. I simply choose a gap that is too
    small to contain ℵo unit fractions.
    How do you do that?
    I know that all exist.
    All unit fractions? How do you choose that interval?

    How can a claim a set of values less then a SPECIFIC NUMBER if I
    don't have the number?
    I claim that all unit fractions are existing as real points of the
    real line. Therefore there is a first one. NUF(x) cannot increase
    without passing 1 when real points are counted. Your ℵo points cannot
    exist without including 1, 2, 3 first points.
    Those first points are on the right, obviously.
    If ℵo points are there, then one is on the left-hand side.
    Why should that be so? It is contradicted by the infinity of unit
    fractions, and there is clearly an end on the right, and you can
    step to the left, so there can’t be an end (other than a limit).

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to All on Mon Sep 9 15:55:38 2024
    Am Mon, 09 Sep 2024 17:15:23 +0200 schrieb WM:
    On 09.09.2024 16:32, Python wrote:
    Le 09/09/2024 à 12:19, Prof. Dr. Mückenheim, aka WM a écrit :

    ℵo unit fractions cannot fit into one of the ℵo intervals between two >>> of them.
    (O, x) is NOT an interval between two unit fractions.
    1/n - 1/(n+1) = x is an interval between two unit fraction. This
    interval is shifted to the origin, yielding the interval (0, x).
    I don’t follow this step.
    It does not contain ℵo unit fractions. It does not contain 1/n.
    Nor does it contain (finitely) many others. So what?

    Note that unit fractions are points on the real line. Therefore there is
    a beginning.
    How does that follow?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to All on Mon Sep 9 16:02:54 2024
    Am Mon, 09 Sep 2024 17:08:49 +0200 schrieb WM:
    On 09.09.2024 13:49, joes wrote:
    Am Mon, 09 Sep 2024 12:27:47 +0200 schrieb WM:
    On 08.09.2024 22:11, Richard Damon wrote:
    On 9/8/24 3:48 PM, WM wrote:

    Select any gap between one of the first ℵo unit fractions and its
    neighbour. Call its size x. Then ℵo unit fractions cannot fit into >>>>> the interval (0, x), independent of the actual size.
    But that is changing the value of x in the middle of the problem
    which isn't allowed.
    Given that new x, we can choose a new set of Aleph_0 unit fractions
    below that x.
    ℵo unit fractions are claimed to be smaller than every x > 0. If that
    is true then I can choose as the x one of the ℵo intervals between two >>> of them.
    More precisely: every positive x has infinitely many smaller unit
    fractions (mind the quantifier order).
    The quantifier order related to the problem is this: NUF(x) = ℵo means: There exist ℵo unit fractions smaller than any x > 0. If this is not
    true, then there are fewer. How many unit fractions are smaller than any
    x > 0. THAT is the question. None. But all are differente. Hence there
    must be a first one smaller than all other unit fractions.
    The wrong quantifier order is: „There is a fixed infinite set of unit fractions, which are all less than any positive x.” The right one is:
    Any positive x has AN infinite set of unit fractions less than it.
    (Those sets are different; the one <0.4 is missing 1/2 compared the
    set of UFs <0.75 but of course still infinite.)
    How do you get to the „hence”?

    A number is not an interval.
    An interval has a length that can be expressed by a real number:
    1/n - 1/(n+1) = x .
    Then the interval (0, x) contains not all unit fractions, for instance
    not 1/n.
    But still infinitely many, since only finitely many are missing.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From Moebius@21:1/5 to All on Mon Sep 9 18:26:32 2024
    Am 09.09.2024 um 17:27 schrieb Python:
    Le 09/09/2024 à 17:15, Crank Mückenheim, aka WM a écrit :
    On 09.09.2024 16:32, Python wrote:
    Le 09/09/2024 à 12:19, Crank Mückenheim, aka WM a écrit :

    ℵo unit fractions cannot fit into one of the ℵo intervals between
    two of them.

    (O, x) is NOT an interval between two unit fractions.

    1/n - 1/(n+1) = x is an interval between two unit fraction. [WM}

    No. It is a number.

    Right. Actually, it's a unit fraction! :-)

    | x = 1/k - 1/(k+1) = 1/[k*(k+1)] > 0

    Hence x = 1/[k*(k+1)] e {1/n : n e IN}.

    This interval is shifted to the origin, yielding the interval (0, x).
    It does not contain ℵo unit fractions. It does not contain 1/n.

    1/n is not in (0, x). Sure. So what? Nevertheless there are Aleph_0 unit fractions in (0, x). No need for 1/n to be there, there far enough other fractions.

    Right, for example the infinitely many unit fractions 1/(1/x + 1),
    1/(1/x + 2), 1/(1/x + 3), ...

    :-P

    What a crank. "Teaching" at a "Hochschule". <facepalm>

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  • From Moebius@21:1/5 to All on Mon Sep 9 18:32:18 2024
    Am 09.09.2024 um 18:02 schrieb joes:
    Am Mon, 09 Sep 2024 17:08:49 +0200 schrieb WM:

    The quantifier order related to the problem is this: NUF(x) = ℵo means:
    There exist ℵo unit fractions smaller than any x > 0.

    Nein, Du Spinner (WM)!

    NUF(x) = ℵo JUST means: There exist (exactly) ℵo unit fractions smaller than x.

    Hint:

    Def: NUF(x) := card({u e {1/n : n e IN} : u < x}) (x e IR).

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  • From WM@21:1/5 to joes on Mon Sep 9 20:44:35 2024
    On 09.09.2024 17:15, joes wrote:

    I still don’t understand. You can choose any size of interval and slide
    it around to include an arbitrary number of unit fractions.

    ℵo unit fractions exist invariably and require a minimum length d. Take
    one of the ℵo gaps. It is smaller than d.

    Simplest argument: If a chain of real points exists on the real axis,
    then it has a beginning.

    Regards, WM

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  • From WM@21:1/5 to Python on Mon Sep 9 20:49:27 2024
    On 09.09.2024 17:27, Python wrote:
    Le 09/09/2024 à 17:15, Prof. Dr. Mückenheim, aka WM a écrit :
    On 09.09.2024 16:32, Python wrote:
    Le 09/09/2024 à 12:19, Prof. Dr. Mückenheim, aka WM a écrit :

    1/n is not in (0, x). Sure. So what? Nevertheless there are Aleph_0 unit fractions in (0, x). No need for 1/n to be there, there far enough other fractions.

    If you cannot understand mathematics consider the simplest logic:
    If a sequence of different real points exists on the positive real axis,
    then it has a beginning. Otherwise it could be a cloud but not a sequence.

    Regards, WM

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  • From Jim Burns@21:1/5 to Ross Finlayson on Mon Sep 9 14:23:01 2024
    On 9/9/2024 12:59 PM, Ross Finlayson wrote:
    On 09/08/2024 09:59 PM, Jim Burns wrote:

    2.
    It is an essential aspect of these discussions
    that
    whatever is not being discussed
    is not being discussed.

    That essential aspect seems to be
    what you (RF) consider
    hypocritically ignoring
    whatever is not being discussed.

    Consider that it is possible for there to be
    many discussions, with many different topics.
    It is true at the same time
    that
    nonstandard analysis can be pursued
    and
    the complete ordered field doesn't hold
    anything other than elements of
    the complete ordered field.

    As context expands there's nothing left out.
    The objects of mathematics all live in
    one mathematical universe,

    We have the ability to _discuss_ only
    irrational elements of the complete ordered field,
    to pick one example.

    If we choose to discuss _only_ them,
    we can make claims about one of them which
    we know are true, even if
    we don't know _which_ one the claims are _about_

    ⎛ x is an irrational real.
    ⎜ x ∈ ℝ\ℚ
    ⎜ Some split Sₓ of ℚ exists with x between sides of Sₓ
    ⎜ ∃Sₓ ⊆ ℚ: {} ≠ Sₓ ᵉᵃᶜʰ< x <ᵉᵃᶜʰ ℚ\Sₓ ≠ {} ⎝ ...

    If we choose to discuss only irrational reals,
    those are true claims.
    ⎛ A true claim is not.first.false.
    ⎜ A finite sequence of not.first.false claims
    ⎝ (AKA a proof) holds only true claims.

    If we widen the discussion to include rationals,
    claims 'x ∈ ℝ\ℚ' etc. aren't always true, and
    we can't reliably use an argument we can use in
    the narrower discussion.

    Not.widening the discussion does not
    wipe rationals out of ℝ
    Not.widening the discussion allows us to learn,
    by means of assembling not.first.false claims,
    things which might not be universally true
    in a wider discussion.

    Very little is true across all of the widest context,
    and probably none of that very little is interesting.

    1.
    I wonder what your own conscientious response
    will be to the infiniteness of the set of
    all finite non.self.membered sets.

    I still wonder.

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  • From WM@21:1/5 to joes on Mon Sep 9 21:03:24 2024
    On 09.09.2024 17:49, joes wrote:
    Am Mon, 09 Sep 2024 17:32:11 +0200 schrieb WM:
    On 09.09.2024 17:15, joes wrote:
    Am Mon, 09 Sep 2024 16:53:32 +0200 schrieb WM:

    You claim that ℵo unit fractions are smaller than ANY x > 0.
    Yes. Not all the same ones of course.
    My question concerns same unit fractions only. Do ℵo unit fractions
    exist smaller than any x > 0? If not, how many same unit fractions exist
    smaller than any x > 0? How many are smalleror equal than all unit
    fractions?
    That is a different question

    No, that is THE question.

    Of course no unit
    fraction is smaller than every other unit fraction.

    This is the first question:
    Do ℵo unit fractions exist smaller than any x > 0,
    as Fritsche claims?

    The second question concerns a weaker claim:
    Do ℵo unit fractions exist smaller than any 1/n > 0?

    If you deny it you cannot approve to the first question.

    Regards, WM

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  • From Jim Burns@21:1/5 to All on Mon Sep 9 15:05:36 2024
    On 9/9/2024 6:39 AM, WM wrote:
    On 08.09.2024 22:21, Jim Burns wrote:

    There aren't two.
    There isn't one.
    There is no smallest unit fraction.

    Then there is no unit fraction.

    ⎛ Each real number > 0 is a rational > 0 or
    ⎜ between sides of a split of rationals > 0

    ⎜ Each rational > 0 is the ratio of
    ⎜ two integers > 0

    ⎜ Each nonempty set S of integers > 0 holds
    ⎜ minimum.S
    ⎜ Each integer > 0 has a successor.integer > 0 (+1)
    ⎜ Each integer > 0 has a predecessor.integer > 0 (-1)
    ⎝ except the minimum integer > 0 (1).

    Those are the points we are talking about.

    If you aren't talking about those,
    what you say is irrelevant _to those_

    If you are talking about those,
    then, no,
    -- there are unit fractions,
    -- each real number > 0 is undercut by ⅟k
    where ⅟k is countable.down.to from ⅟1
    -- for each x > 0, for each j countable.up.to from 1
    there are more.than.j unit.fractions in (0,x)
    -- there is no first (smallest) unit fraction, and
    -- there aren't fewer.than.ℵ₀ unit.fractions in (0,x)

    ℵo unit fractions cannot exist without
    1, 2, 3, ... unit fractions before.

    Each unit.fraction has 1,2,3,... unit.fraction before.

    It is incorrect (it is a quantifier shift)
    to conclude from that correct claim
    that
    🛇 there are 1,2,3,... unit.fractions before each

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  • From WM@21:1/5 to joes on Mon Sep 9 21:07:22 2024
    On 09.09.2024 17:51, joes wrote:
    Am Mon, 09 Sep 2024 17:26:12 +0200 schrieb WM:
    On 09.09.2024 17:14, joes wrote:

    If ℵo points are there, then one is on the left-hand side.
    Why should that be so?

    This is so because every sequence of points on the positive real axis
    has either one smallest point or more than one. In any case it has a
    beginning because real points of a sequence do not appear after an
    opaque cloud.

    Regards, WM

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  • From WM@21:1/5 to Jim Burns on Mon Sep 9 21:13:11 2024
    On 09.09.2024 21:05, Jim Burns wrote:
    On 9/9/2024 6:39 AM, WM wrote:

    ℵo unit fractions cannot exist without
    1, 2, 3, ... unit fractions before.

    Each unit.fraction has 1,2,3,... unit.fraction before.

    It is incorrect (it is a quantifier shift)
    to conclude from that correct claim
    that
    🛇 there are 1,2,3,... unit.fractions before each

    It is a property of real points on the positive real line, that every
    sequence has a beginning. What alternative configuration can the points
    have in your opinion.


    This is the first question:
    Do ℵo unit fractions exist smaller than any x > 0,
    as Fritsche claims?

    The second question concerns a weaker claim:
    Do ℵo unit fractions exist smaller than any 1/n > 0?

    If you deny the second you cannot approve the first question.

    Regards, WM

    Regards, WM

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  • From WM@21:1/5 to joes on Mon Sep 9 21:08:42 2024
    On 09.09.2024 17:55, joes wrote:
    Am Mon, 09 Sep 2024 17:15:23 +0200 schrieb WM:

    Note that unit fractions are points on the real line. Therefore there is
    a beginning.
    How does that follow?

    What configuration could be the alternative?

    Regards, WM

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  • From Jim Burns@21:1/5 to All on Mon Sep 9 15:43:44 2024
    On 9/9/2024 2:44 PM, WM wrote:
    On 09.09.2024 17:15, joes wrote:

    I still don’t understand.
    You can choose any size of interval and
    slide it around to include
    an arbitrary number of unit fractions.

    ℵo unit fractions exist invariably

    The unit fractions
    before x > 0 and before x′ > 0
    vary.
    For both x and x′, they are ℵ₀.many,
    but not the same ℵ₀.many.

    and require a minimum length d.

    No.
    There is a greatest.lower.bound 0
    but there isn't a _minimum_

    ℵ₀.many unit.fractions do not
    fit in a 0.length interval.

    For each d > 0
    ℵ₀.many unit.fractions fit in (0,d)
    k ⟼ ⅟⌊k+⅟d⌋

    and
    for ½⋅d
    ℵ₀.many unit.fractions fit in (0,½⋅d)
    k ⟼ ⅟⌊k+2⋅⅟d⌋
    -- which aren't the same as ⅟⌊k+⅟d⌋ --
    so
    each d > 0 is not.minimum.

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  • From joes@21:1/5 to All on Mon Sep 9 19:51:35 2024
    Am Mon, 09 Sep 2024 21:08:42 +0200 schrieb WM:
    On 09.09.2024 17:55, joes wrote:
    Am Mon, 09 Sep 2024 17:15:23 +0200 schrieb WM:

    Note that unit fractions are points on the real line. Therefore there
    is a beginning.
    How does that follow?
    What configuration could be the alternative?
    An infinite chain beginning at 1.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From Moebius@21:1/5 to All on Mon Sep 9 21:25:06 2024
    Am 09.09.2024 um 18:02 schrieb joes:
    Am Mon, 09 Sep 2024 17:08:49 +0200 schrieb WM:
    On 09.09.2024 13:49, joes wrote:
    Am Mon, 09 Sep 2024 12:27:47 +0200 schrieb WM:

    [Such] an interval has a length that can be expressed by a real number:
    1/n - 1/(n+1) = x .
    Then the interval (0, x) contains not all unit fractions, for instance
    not 1/n.

    Ein Moment geistiger Klarheit, Mückenheim?

    On th eother hand:

    But still infinitely many, since only finitely many are missing.

    Right.

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  • From joes@21:1/5 to All on Mon Sep 9 19:57:44 2024
    Am Mon, 09 Sep 2024 20:44:35 +0200 schrieb WM:
    On 09.09.2024 17:15, joes wrote:

    I still don’t understand. You can choose any size of interval and slide
    it around to include an arbitrary number of unit fractions.
    ℵo unit fractions exist invariably and require a minimum length d. Take
    one of the ℵo gaps. It is smaller than d.
    SO WHAT

    Simplest argument: If a chain of real points exists on the real axis,
    then it has a beginning.
    Proof?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From Jim Burns@21:1/5 to All on Mon Sep 9 16:20:19 2024
    On 9/9/2024 3:13 PM, WM wrote:
    On 09.09.2024 21:05, Jim Burns wrote:
    On 9/9/2024 6:39 AM, WM wrote:

    ℵo unit fractions cannot exist without
    1, 2, 3, ... unit fractions before.

    Each unit.fraction has 1,2,3,... unit.fraction before.

    It is incorrect (it is a quantifier shift)
    to conclude from that correct claim
    that
    🛇 there are 1,2,3,... unit.fractions before each

    It is a property of
    real points on the positive real line,
    that every sequence has a beginning.

    That's not a property of these points:

    ⎛ Each real number > 0 is a rational > 0 or
    ⎜ between sides of a split of rationals > 0

    ⎜ Each rational > 0 is the ratio of
    ⎜ two integers > 0

    ⎜ Each nonempty set S of integers > 0 holds
    ⎜ minimum.S
    ⎜ Each integer > 0 has a successor.integer > 0 (+1)
    ⎜ Each integer > 0 has a predecessor.integer > 0 (-1)
    ⎝ except the minimum integer > 0 (1).

    What alternative configuration can the points have
    in your opinion.

    The usual configuration is sufficient.

    Pause the extra bells and whistles for a moment.
    What makes it sufficient is that
    ( Each integer > 0 has a successor.integer > 0 (+1)

    We can define a k.successor k+1 = k∪{k}

    The claim that some sequences are infinite
    follows from
    the claim that, for existing k, k∪{k} exists.

    That k∪{k}.claim isn't justified by logic;
    instead, it is justified by _being what we mean_
    Denying it might not lead to contradiction,
    but it definitely leads to irrelevance.

    This is the first question:
    Do ℵo unit fractions exist smaller than any x > 0,
    as Fritsche claims?

    You have messed up the quantifier order.

    The second question concerns a weaker claim:
    Do ℵo unit fractions exist smaller than any 1/n > 0?

    ℵ₀.many < ⅟n
    k ⟼ ⅟(k+n)

    ℵ₀.many < ⅟n′
    k ⟼ ⅟(k+n′)

    but not the same unit.fractions.
    ⅟(k+n) ≠ ⅟(k+n′)

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  • From Moebius@21:1/5 to All on Mon Sep 9 22:28:35 2024
    Am 09.09.2024 um 21:57 schrieb joes:
    Am Mon, 09 Sep 2024 20:44:35 +0200 schrieb WM:

    Simplest argument: If a chain of real points exists on the real axis,
    then it has a beginning.

    Yeah, simple - and wrong. :-)

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  • From Moebius@21:1/5 to All on Tue Sep 10 02:36:51 2024
    Am 10.09.2024 um 02:32 schrieb Moebius:
    Am 10.09.2024 um 01:08 schrieb Chris M. Thomasson:

    Take the gap between:

    1/1 and 1/2. There are infinitely many unit fractions that are small
    enough to fit within that gap.

    Oh, really?! Could you name (just) o n e? :-)

    I mean ... a unit fraction u such that 1/2 < u < 1/1. :-o

    Hint, you see... 1/3 < 1/2 < 1/1. Actually, for each and every k e IN
    with k > 2: 1/k < 1/2 < 1/1.

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  • From Moebius@21:1/5 to All on Tue Sep 10 02:32:37 2024
    Am 10.09.2024 um 01:08 schrieb Chris M. Thomasson:

    Take the gap between:

    1/1 and 1/2. There are infinitely many unit fractions that are small
    enough to fit within that gap.

    Oh, really?! Could you name (just) o n e? :-)

    I mean ... a unit fraction u such that 1/2 < u < 1/1. :-o

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  • From Moebius@21:1/5 to All on Tue Sep 10 02:50:39 2024
    Am 09.09.2024 um 21:57 schrieb joes:
    Am Mon, 09 Sep 2024 20:44:35 +0200 schrieb WM:

    ℵo unit fractions [...] require a minimum length d.

    Hint@Mückenheim:

    No, "ℵo unit fractions" don't "require a minimum length d" - IN THE
    FOLLOWING SENSE:

    For each and every d e IR, d > 0, there are ℵo unit fractions which are
    in (0, d).

    OF COURSE, if we consider a (non empty) set of "given" unit fractions S,
    then the unit fractions in S "require" an interval of length d = max S -
    inf S.

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  • From joes@21:1/5 to All on Tue Sep 10 05:59:28 2024
    Am Mon, 09 Sep 2024 21:07:22 +0200 schrieb WM:
    On 09.09.2024 17:51, joes wrote:
    Am Mon, 09 Sep 2024 17:26:12 +0200 schrieb WM:
    On 09.09.2024 17:14, joes wrote:

    If ℵo points are there, then one is on the left-hand side.
    Why should that be so?
    This is so because every sequence of points on the positive real axis
    has either one smallest point or more than one. In any case it has a beginning because real points of a sequence do not appear after an
    opaque cloud.
    They do in fact.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From Jim Burns@21:1/5 to Ross Finlayson on Tue Sep 10 05:21:47 2024
    On 9/9/2024 11:11 PM, Ross Finlayson wrote:
    On 09/09/2024 11:23 AM, Jim Burns wrote:
    On 9/9/2024 12:59 PM, Ross Finlayson wrote:
    On 09/08/2024 09:59 PM, Jim Burns wrote:
    On 9/8/2024 6:34 PM, Ross Finlayson wrote:

    It's already been thoroughly elaborated and
    as attached to formalistic symbolry,
    that "Russell's thesis, of an antinomy" is that
    the set of
    the finite sets that don't contain themselves,
    exactly like the ordinals are mostly simply modeled to be,
    does and doesn't contain itself,

    I wonder what your own conscientious response
    will be to the infiniteness of the set of
    all finite non.self.membered sets.

    To your question, "are the finites infinite",
    well yeah.

    It seems to me (JB) that

    ⎜ Russell's thesis is that
    ⎜ the set of
    ⎜ the finite sets that don't contain themselves
    ⎜ does and doesn't contain itself

    is and is not what you (RF) are claiming.

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  • From Richard Damon@21:1/5 to All on Tue Sep 10 07:41:05 2024
    On 9/9/24 11:32 AM, WM wrote:
    On 09.09.2024 17:15, joes wrote:
    Am Mon, 09 Sep 2024 16:53:32 +0200 schrieb WM:

    You claim that ℵo unit fractions are smaller than ANY x > 0.
    Yes. Not all the same ones of course.

    My question concerns same unit fractions only. Do ℵo unit fractions
    exist smaller than any x > 0? If not, how many same unit fractions exist smaller than any x > 0? How many are smalleror equal than all unit
    fractions?

    Regards, WM



    Whst do you mean by "same" unit fractions.

    for every different x, there might be a different set of unit fractions
    below them. Those sets will have Aleph_0 unit fractions in common, but
    each are different set with possible a finite number of members different.

    There is a very significant difference between asking about ANY and
    asking about ALL, especially with infinite sets.

    There are Aleph_0 unit fractions below ANY x, as we can form that
    infinite set of them

    There are 0 unit fractions below ALL x, as there can not be an x that is smaller than ALL x, and there is no smallest to be equal or less than.

    It may seem strange to someone thinking in terms of finite things, but
    that is the world of infinite unbounded sets.

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  • From Richard Damon@21:1/5 to smaller than it. I can even on Tue Sep 10 07:41:10 2024
    On 9/9/24 10:53 AM, WM wrote:
    On 09.09.2024 13:32, Richard Damon wrote:

    No, because the claim is GIVEN an x, we can do "Y", that is make the
    Aleph_0 unit fractions below it.

    You are in error. MY CLAIM is: Given ℵo unit fractions smaller than
    every x > 0, then I choose any of their gaps.

    Which mean what?

    Given a number, I can pick one?

    What does that claim to show?


    Until you have chosen your x, we don't need to provide those unit
    fractions, so, you can't use them to create your x.

    You claim that ℵo unit fractions are smaller than ANY x > 0. That is
    simply fool's crap.

    Why, name the x, and I can name the series of Aleph_0 unit fractions
    smaller than it. I can even write a formula so anyone can do it.


    To follow YOUR idea, then *YOU* get stuck in the infinite loop of
    every time you change your x, the unit fractions change so you need to
    change to another x, and the unit fractions change again.

    I do not change anything. There are unit fractions as real points on the
    real line. These real points are really real and therefore must start somewhere. Hence there is a beginning, one ore more first points.

    Why do they need a beginning (at that end)?

    Yes, then have ONE beginning, at 1/1, so we can count them, but at the
    other end they do not.

    There is a boundry, and that is 0, but that isn't the "first" of them,
    as it is outside the set.

    You just don't understand the concept of actually INFINITY.

    If there WAS a smallest unit fraction, then there couldn't be an
    infinite number of them, as we could count them down from there.


    Regards, WM



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  • From Richard Damon@21:1/5 to All on Tue Sep 10 07:49:18 2024
    On 9/9/24 10:57 AM, WM wrote:
    On 09.09.2024 13:46, joes wrote:
    Am Mon, 09 Sep 2024 12:22:21 +0200 schrieb WM:

    ℵo unit fractions cannot fit into one of the ℵo intervals between two of
    them, because ℵo unit fractions occupy ℵo intervals.
    What? It’s about the size, not the number of intervals.

    One of ℵo intervals is smaller than ℵo intervals.
    Unit fractions are real points on the real line. Therefore there is a beginning, one or more smallest unit fractions.

    Regards, WM


    Where do you get that from?

    Every interval is based on finite numbers, and only is smaller than a
    finite number of other intervals.

    You have a funny-mental error that you think there must be a smallest.

    Part of the problem is likely your concept of them being "real".

    They are real in the sense that they exist by the definition of mathematics.

    They are not real in the sense that they PHYSICALLY exist as a finite
    object in the universe. That would establish a lower limit to there
    size, whcih doesn't exist in the mathematical reality, and means they
    can't be actually infinite.

    THis seems to be a source of your confusion.

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  • From Richard Damon@21:1/5 to All on Tue Sep 10 07:52:11 2024
    On 9/9/24 11:01 AM, WM wrote:
    On 09.09.2024 13:47, Richard Damon wrote:
    On 9/9/24 6:31 AM, WM wrote:

    And all gaps are occupied by the unit fractions. Hence every gap is
    too small.

    But there is always room at the bottom, where the gaps keep getting
    smaller

    They all are present from the start. I simply choose a gap that is too
    small to contain ℵo unit fractions.
    How can a claim a set of values less then a SPECIFIC NUMBER if I don't
    have the number?

    I claim that all unit fractions are existing as real points of the real
    line. Therefore there is a first one. NUF(x) cannot increase without
    passing 1 when real points are counted. Your ℵo points cannot exist
    without including 1, 2, 3 first points.

    Regards, WM




    And are just wrong, because you don't understand what it means to be
    "existing" or to be a "real point".

    Thus, you are just ignorant of what you talk about as your brain has
    exploded itself in the contradictions.

    The problem is your NUF(x) can't actually be defined the way you do, as
    it is based on false assumptions, namely the countability of values from
    an unbounded end.

    Sorry, you are just proving your stupidity.

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  • From Richard Damon@21:1/5 to All on Tue Sep 10 07:54:53 2024
    On 9/9/24 11:26 AM, WM wrote:
    On 09.09.2024 17:14, joes wrote:
    Am Mon, 09 Sep 2024 17:01:35 +0200 schrieb WM:

    They all are present from the start. I simply choose a gap that is too
    small to contain ℵo unit fractions.
    How do you do that?

    I know that all exist.

    How can a claim a set of values less then a SPECIFIC NUMBER if I don't >>>> have the number?
    I claim that all unit fractions are existing as real points of the real
    line. Therefore there is a first one. NUF(x) cannot increase without
    passing 1 when real points are counted. Your ℵo points cannot exist
    without including 1, 2, 3 first points.
    Those first points are on the right, obviously.

    If ℵo points are there, then one is on the left-hand side. Note that
    they are real points on the real line. There cannot be more points
    unless they start with 1. Everything else is belief in ghosts of matheology

    Regards, WM


    Why? That is finite thinking. For any one I chose, there are more to the
    left.

    Why can't there be more, they are infinite, and thus exist without limit.

    Your disbelief in "mathology" is just your own superstition of being
    afraid of things you don't understand.

    Just like flat earthers who can't understand why people on the other
    side don't "fall off" since the sky to them is "down" (to us)

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  • From Richard Damon@21:1/5 to All on Tue Sep 10 07:59:32 2024
    On 9/9/24 3:07 PM, WM wrote:
    On 09.09.2024 17:51, joes wrote:
    Am Mon, 09 Sep 2024 17:26:12 +0200 schrieb WM:
    On 09.09.2024 17:14, joes wrote:

    If ℵo points are there, then one is on the left-hand side.
    Why should that be so?

    This is so because every sequence of points on the positive real axis
    has either one smallest point or more than one. In any case it has a beginning because real points of a sequence do not appear after an
    opaque cloud.

    Regards, WM


    But that rule only holds for FINITE sequences.

    Infinite sequences might have NO smallest points.

    It isn't an "opaque cloud" that stops them from having a smallest, but a infinite accumulation of values at that bound (that is outside the set).

    If that is a cloud that you can't see and say is an opaque cloud, then
    the issue is YOU, not the numbers. They all exist, and have the
    property, even if it seems impossible to you.

    Just like people on the other side of the world think we are "below"
    them while we might think they are "below" us.

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  • From Richard Damon@21:1/5 to All on Tue Sep 10 08:03:50 2024
    On 9/9/24 11:19 AM, WM wrote:
    On 09.09.2024 13:51, joes wrote:
    Am Mon, 09 Sep 2024 12:31:55 +0200 schrieb WM:

    Al gaps are occupied by the unit fractions. Hence every gap is too
    small.
    In which sense are the gaps „occupied”?

    ℵo unit fractions cover a distance d which is the sum of the gaps
    between them.

    First you claim the unit fractions with their gaps. Then I choose
    one of them, irrelevant which one. Each one is smaller than all.
    Each gap is smaller than all gaps?

    The sum of all gaps is larger than one of them.

    Regards, WM



    But there is an infinte set of gaps that will fit into any of them.

    You keep getting your criteria order messed up.

    Of course you can't fit ALL the Aleph_0 gaps into a smaller gap, but you
    CAN fit a subset of size Aleph_0 into there by removing the biggest ones
    until the total is small enough, and you will only need to remove a
    finite number of them, so you still have Aleph_0 left.

    The fact that arithmetic blows you mind is why you have problems, you
    just don't understand the rules of arithmatic on infinite unbounded
    values, because you are stuck with the rule of just finite mathematics.

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  • From Richard Damon@21:1/5 to All on Tue Sep 10 08:07:26 2024
    On 9/9/24 2:44 PM, WM wrote:
    On 09.09.2024 17:15, joes wrote:

    I still don’t understand. You can choose any size of interval and slide
    it around to include an arbitrary number of unit fractions.

    ℵo unit fractions exist invariably and require a minimum length d. Take
    one of the ℵo gaps. It is smaller than d.

    A GIVEN infinte set of unit fractions will have a total. length of d,
    but by just removing a finite number of the largest elements, you still
    have an infinite set, and the size of that new set can be made as small
    as you want (as long as that value is actually > 0)

    You don't seem to understand this fact, and think you are stuck with
    just one infinite set.


    Simplest argument: If a chain of real points exists on the real axis,
    then it has a beginning.

    Which is a FALSE statement when about infinite sets. Infinite sets might
    not have a "beginning" in the set.


    Regards, WM

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  • From WM@21:1/5 to Jim Burns on Tue Sep 10 18:16:20 2024
    On 09.09.2024 21:43, Jim Burns wrote:
    On 9/9/2024 2:44 PM, WM wrote:

    The unit fractions
     before x > 0 and before x′ > 0
    vary.
    For both x and x′, they are ℵ₀.many,
    but not the same ℵ₀.many.

    The same ℵ₀ many are existing in both cases, in addition there are
    finitely many further unit fractions.

    and require a minimum length d.

    No.
    There is a greatest.lower.bound 0
    but there isn't  a _minimum_

    There is a minimum larger than a distance of countably many points.

    so
    each d > 0 is not.minimum.

    A d of of countably many points is less than the minimum.
    Do countably many points exist as a subdistance of every distance of uncountably many points, like the gaps between two unit fractions?

    Regards, WM

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  • From WM@21:1/5 to joes on Tue Sep 10 18:18:05 2024
    On 09.09.2024 21:51, joes wrote:
    Am Mon, 09 Sep 2024 21:08:42 +0200 schrieb WM:
    On 09.09.2024 17:55, joes wrote:
    Am Mon, 09 Sep 2024 17:15:23 +0200 schrieb WM:

    Note that unit fractions are points on the real line. Therefore there
    is a beginning.
    How does that follow?
    What configuration could be the alternative?
    An infinite chain beginning at 1.

    What begins after zero? Does there something related to unit fractions
    exist?

    Regards, WM

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  • From WM@21:1/5 to joes on Tue Sep 10 18:27:30 2024
    On 09.09.2024 21:57, joes wrote:
    Am Mon, 09 Sep 2024 20:44:35 +0200 schrieb WM:

    Simplest argument: If a chain of real points exists on the real axis,
    then it has a beginning.
    Proof?

    What else could there be? Any idea?

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Tue Sep 10 21:03:30 2024
    On 10.09.2024 13:41, Richard Damon wrote:

    Why do they need a beginning (at that end)?

    Because there is none in the negative and some in the prositive. At that
    end.

    There is a boundry, and that is 0, but that isn't the "first" of them,
    as it is outside the set.

    Either the set starts with one unit fraction or with a cloud of unit
    fractions.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Tue Sep 10 21:05:24 2024
    On 10.09.2024 13:49, Richard Damon wrote:
    On 9/9/24 10:57 AM, WM wrote:

    Unit fractions are real points on the real line. Therefore there is a
    beginning, one or more smallest unit fractions.

    Where do you get that from?

    What is the alternative?

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Tue Sep 10 21:10:46 2024
    On 10.09.2024 14:07, Richard Damon wrote:

    A GIVEN infinte set of unit fractions will have a total. length of d,
    but by just removing a finite number of the largest elements, you still
    have an infinite set, and the size of that new set can be made as small
    as you want (as long as that value is actually > 0)

    Do countably many points exist as a subdistance of every distance of uncountably many points, like the gaps between two unit fractions?

    The size of that new set can be made as small as you want

    Even when the size is only countably many points?

    Regards, WM

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  • From WM@21:1/5 to Chris M. Thomasson on Tue Sep 10 21:13:57 2024
    On 10.09.2024 20:38, Chris M. Thomasson wrote:
    It seems that any non-zero gap can have unit fractions
    small enough to fit in it...

    A gap of countably many points is not sufficient but is a subgap of
    every gap between unit fractions.

    Regards, WM

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  • From Moebius@21:1/5 to All on Tue Sep 10 21:27:32 2024
    Am 10.09.2024 um 20:35 schrieb Chris M. Thomasson:
    On 9/9/2024 5:32 PM, Moebius wrote:
    Am 10.09.2024 um 01:08 schrieb Chris M. Thomasson:

    Take the gap between:

    1/1 and 1/2. There are infinitely many unit fractions that are small
    enough to fit within that gap.

    Oh, really?! Could you name (just) o n e? :-)

    1/4?

    Hmmm... 1/2 < 1/4 < 1/1

    i.e. 0.5 < 0.25 < 1.

    Are you sure?

    I mean ... a unit fraction u such that 1/2 < u < 1/1. :-o

    On the other hand, 1/2 < 1/2 + 1/4 < 1/1

    i.e. 0.5 < 0.75 < 1.

    But 1/2 + 1/4 = 3/4 is not a unit fraction. :-P

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  • From Moebius@21:1/5 to All on Tue Sep 10 21:31:40 2024
    Am 10.09.2024 um 21:05 schrieb Chris M. Thomasson:
    On 9/10/2024 11:42 AM, Chris M. Thomasson wrote:
    On 9/10/2024 4:09 AM, FromTheRafters wrote:
    Chris M. Thomasson brought next idea :
    On 9/9/2024 11:49 AM, WM wrote:
    On 09.09.2024 17:27, Python wrote:
    Le 09/09/2024 à 17:15, Prof. Dr. Mückenheim, aka WM a écrit : >>>>>>> On 09.09.2024 16:32, Python wrote:
    Le 09/09/2024 à 12:19, Prof. Dr. Mückenheim, aka WM a écrit : >>>>>
    1/n is not in (0, x). Sure. So what? Nevertheless there are
    Aleph_0 unit
    fractions in (0, x). No need for 1/n to be there, there far enough >>>>>> other
    fractions.

    If you cannot understand mathematics consider the simplest logic:
    If a sequence of different real points exists on the positive real
    axis, then it has a beginning. Otherwise it could be a cloud but
    not a sequence.

    Oh wow. You need help! Or we do for even giving you the time of day.
    YIKES!!!!!!!!!!

    Actually, I think he is close to correct. The thing is, he wants the
    first term of the sequence to be last. The reals are not a sequence,
    but the unit fractions are and they start with 1/1 not at some
    imagined other end. You need a first and likely a next to start.

    So, I am thinking there is a unit fraction that fits in the simple gap
    of 1/1 and 1/2:

    1/1----->1/4------>1/2

    ?

    Fair enough? Is this getting on track or going off the rails?

    Actually, there

    is NO

    unit fractions in that gap[.]

    :-)

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  • From Moebius@21:1/5 to All on Tue Sep 10 21:30:26 2024
    Am 10.09.2024 um 20:38 schrieb Chris M. Thomasson:
    On 9/10/2024 11:35 AM, Chris M. Thomasson wrote:
    On 9/9/2024 5:32 PM, Moebius wrote:
    Am 10.09.2024 um 01:08 schrieb Chris M. Thomasson:

    Take the gap between:

    1/1 and 1/2. There are infinitely many unit fractions that are small
    enough to fit within that gap.

    Oh, really?! Could you name (just) o n e? :-)

    1/4?

    1/4 is between 1/1 and 1/2:

    1/1---->1/4---->1/2

    lol. If you say so. :-)

    So, it's not _strict_

    Actually, it's not between 1/2 and 1/1 at all (if we presuppose the
    usual order < on the rational numbers).

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  • From WM@21:1/5 to FromTheRafters on Tue Sep 10 20:59:58 2024
    On 10.09.2024 13:09, FromTheRafters wrote:

    Actually, I think he is close to correct. The thing is, he wants the
    first term of the sequence to be last.

    Real points can be addressed from every side.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Tue Sep 10 21:07:46 2024
    On 10.09.2024 13:59, Richard Damon wrote:

    It isn't an "opaque cloud" that stops them from having a smallest, but a infinite accumulation of values at that bound (that is outside the set).

    One or finitely many or a cloud. More is not available.

    Regards, WM

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  • From Moebius@21:1/5 to All on Tue Sep 10 22:33:02 2024
    Am 10.09.2024 um 22:25 schrieb Chris M. Thomasson:
    On 9/10/2024 12:31 PM, Moebius wrote:
    Am 10.09.2024 um 21:05 schrieb Chris M. Thomasson:
    On 9/10/2024 11:42 AM, Chris M. Thomasson wrote:
    On 9/10/2024 4:09 AM, FromTheRafters wrote:
    Chris M. Thomasson brought next idea :
    On 9/9/2024 11:49 AM, WM wrote:
    On 09.09.2024 17:27, Python wrote:
    Le 09/09/2024 à 17:15, Prof. Dr. Mückenheim, aka WM a écrit : >>>>>>>>> On 09.09.2024 16:32, Python wrote:
    Le 09/09/2024 à 12:19, Prof. Dr. Mückenheim, aka WM a écrit : >>>>>>>
    1/n is not in (0, x). Sure. So what? Nevertheless there are
    Aleph_0 unit
    fractions in (0, x). No need for 1/n to be there, there far
    enough other
    fractions.

    If you cannot understand mathematics consider the simplest logic: >>>>>>> If a sequence of different real points exists on the positive
    real axis, then it has a beginning. Otherwise it could be a cloud >>>>>>> but not a sequence.

    Oh wow. You need help! Or we do for even giving you the time of
    day. YIKES!!!!!!!!!!

    Actually, I think he is close to correct. The thing is, he wants
    the first term of the sequence to be last. The reals are not a
    sequence, but the unit fractions are and they start with 1/1 not at
    some imagined other end. You need a first and likely a next to start. >>>>
    So, I am thinking there is a unit fraction that fits in the simple
    gap of 1/1 and 1/2:

    1/1----->1/4------>1/2

    ?

    Fair enough? Is this getting on track or going off the rails?

    Actually, there

    is NO

    unit fractions in that gap[.]

    :-)



    How about:

    1/1----->(1/4 + 1/4 + 1/4)------>1/2

    1----->.75----->1/2

    ?

    There are infinite[ly many] unit fractions in the gap?

    Nope. There is NO unit fraction in te gap (between 1/2 and 1/2).

    Hint: 1/4 + 1/4 + 1/4 = 3/4 is not a unit fraction. :-)

    How many rounds do you want to... :-)

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  • From Moebius@21:1/5 to All on Tue Sep 10 22:34:05 2024
    Am 10.09.2024 um 22:33 schrieb Moebius:
    Am 10.09.2024 um 22:25 schrieb Chris M. Thomasson:
    On 9/10/2024 12:31 PM, Moebius wrote:
    Am 10.09.2024 um 21:05 schrieb Chris M. Thomasson:
    On 9/10/2024 11:42 AM, Chris M. Thomasson wrote:
    On 9/10/2024 4:09 AM, FromTheRafters wrote:
    Chris M. Thomasson brought next idea :
    On 9/9/2024 11:49 AM, WM wrote:
    On 09.09.2024 17:27, Python wrote:
    Le 09/09/2024 à 17:15, Prof. Dr. Mückenheim, aka WM a écrit : >>>>>>>>>> On 09.09.2024 16:32, Python wrote:
    Le 09/09/2024 à 12:19, Prof. Dr. Mückenheim, aka WM a écrit : >>>>>>>>
    1/n is not in (0, x). Sure. So what? Nevertheless there are
    Aleph_0 unit
    fractions in (0, x). No need for 1/n to be there, there far
    enough other
    fractions.

    If you cannot understand mathematics consider the simplest logic: >>>>>>>> If a sequence of different real points exists on the positive
    real axis, then it has a beginning. Otherwise it could be a
    cloud but not a sequence.

    Oh wow. You need help! Or we do for even giving you the time of
    day. YIKES!!!!!!!!!!

    Actually, I think he is close to correct. The thing is, he wants
    the first term of the sequence to be last. The reals are not a
    sequence, but the unit fractions are and they start with 1/1 not
    at some imagined other end. You need a first and likely a next to
    start.

    So, I am thinking there is a unit fraction that fits in the simple
    gap of 1/1 and 1/2:

    1/1----->1/4------>1/2

    ?

    Fair enough? Is this getting on track or going off the rails?

    Actually, there

    is NO

    unit fractions in that gap[.]

    :-)



    How about:

    1/1----->(1/4 + 1/4 + 1/4)------>1/2

    1----->.75----->1/2

    ?

    There are infinite[ly many] unit fractions in the gap?

    Nope. There is NO unit fraction in te gap (between 1/2 and 1/2).

    Hint: 1/4 + 1/4 + 1/4 = 3/4 is not a unit fraction. :-)

    How many rounds do you want to... :-)

    Hint: You will never be able to beat Mückenheim!

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  • From Moebius@21:1/5 to All on Tue Sep 10 22:38:26 2024
    Am 10.09.2024 um 22:33 schrieb Chris M. Thomasson:
    On 9/10/2024 12:30 PM, Moebius wrote:
    Am 10.09.2024 um 20:38 schrieb Chris M. Thomasson:
    On 9/10/2024 11:35 AM, Chris M. Thomasson wrote:
    On 9/9/2024 5:32 PM, Moebius wrote:
    Am 10.09.2024 um 01:08 schrieb Chris M. Thomasson:

    Take the gap between:

    1/1 and 1/2. There are infinitely many unit fractions that are
    small enough to fit within that gap.

    Oh, really?! Could you name (just) o n e? :-)

    1/4?

    1/4 is between 1/1 and 1/2:

    1/1---->1/4---->1/2

    lol. If you say so. :-)

    So, it's not _strict_

    Actually, it's not between 1/2 and 1/1 at all (if we presuppose the
    usual order < on the rational numbers).

    The LENGTH OF THE gap from 1/1 to 1/2 is 1/2 so there are infinity many unit fractions
    that are smaller than 1/2.

    MAN, YOUR ORIGINAL CLAIM WAS: "1/4 is between 1/1 and 1/2."

    THIS CLAIM IS WRONG. (WRONG! WORONG!)

    FUCK YOUR "GAP".

    Please don't do the Mückenheim her. One crank is enough.

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  • From Jim Burns@21:1/5 to All on Tue Sep 10 17:12:05 2024
    On 9/10/2024 12:16 PM, WM wrote:
    On 09.09.2024 21:43, Jim Burns wrote:

    The unit fractions
      before x > 0 and before x′ > 0
    vary.
    For both x and x′, they are ℵ₀.many,
    but not the same ℵ₀.many.

    The same ℵ₀ many are existing in both cases,

    No.
    They are not the same for ⌊⅟x⌋ < ⌊⅟x′⌋

    For ⌊⅟x⌋ < ⌊⅟x′⌋
    k ⟼ ⅟⌊k+⅟x⌋: one.to.one
    k ⟼ ⅟⌊k+⅟x′⌋: one.to.one
    ⅟⌊k+⅟x⌋ > ⅟⌊k+⅟x′⌋

    ⅟ℕ∩(0,x] ⊃≠ ⅟ℕ∩(0,x′]
    |⅟ℕ∩(0,x]| = |ℕ| = |⅟ℕ∩(0,x′]|
    |ℕ| = ℵ₀

    ⅟ℕ∩(0,x] is infinite, which is in conflict with
    your implicitly.adopted axiom that
    there are no infinite sets.

    No Grand Council of Mathematicians exists,
    in a lair under a dormant mid.Pacific volcano,
    to order you to stop using contradictory axioms.

    What happens is less cinema.worthy but more inevitable:
    If you adopt axioms claiming an infinite set is finite,
    there is nothing to which you can be referring.
    And there is nothing you or any imaginable
    Grand Council of Mathematicians can do to change that.

    in addition there are
    finitely many further unit fractions.

    and require a minimum length d.

    No.
    There is a greatest.lower.bound 0
    but there isn't  a _minimum_

    There is a minimum larger than
    a distance of countably many points.

    No.

    For each x > 0
    ℕ ⟶ (0,½⋅x)
    k ⟼ ⅟⌊k+2⋅⅟x⌋
    ½⋅x is a counter.example to the claim that
    🛇 x lower.bounds distances of countably.many.points.

    _x > 0 is not minimum distances of countably.many.points_

    x ≤ 0 lower.bounds distances of countably.many.points
    but
    x ≤ 0 is not itself a distance of countably.many.points.

    _x ≤ 0 is not minimum distances of countably.many.points_

    _Minimum distances of countably.many.points does not exist_

    so
    each d > 0 is not.minimum.

    A d of of countably many points is
    less than the minimum.

    Everything is true of the non.existent minimum.
    The minimum is greater than d AND
    the minimum is less than d AND
    the minimum is in my shirt pocket AND
    the minimum tastes like strawberries.
    Everything is true: nothing is true.
    It is non.existent.

    You (WM) don't seem to find the non.existent
    something to avoid in what one discusses.

    It appears that you prefer the freedom of
    claiming whatever pops into your head
    about minimumᵂᴹ d > 0 or about darkᵂᴹ numbers
    without needing to exert any effort to
    figure out how existent things work.
    They're non.existent:
    You (WM) ask for a (non.existent) counter.example,
    and then you're ready to call it a day.

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Tue Sep 10 21:24:05 2024
    On 9/10/24 3:05 PM, WM wrote:
    On 10.09.2024 13:49, Richard Damon wrote:
    On 9/9/24 10:57 AM, WM wrote:

    Unit fractions are real points on the real line. Therefore there is a
    beginning, one or more smallest unit fractions.

    Where do you get that from?

    What is the alternative?

    Regards, WM

    Accept the TRUTH that there exist no smallest unit fraction, positive
    rational or positive real, because for any x you might try to claim to
    be one, has a INFINITE number of points below it, including x/2 as a
    starter.

    If you can't accept that, then accept that you mind just can't handle
    unbounded infinite sets and live with it.

    By your sort of admitting that you are doing this just because you can't
    see any other option, is the first step to learning about the other
    options that you couldn't think of by yourself.

    Of course, to continue, you must admit that you logic isn't working and
    you need to be willing to learn something new.

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Tue Sep 10 21:37:10 2024
    On 9/10/24 3:03 PM, WM wrote:
    On 10.09.2024 13:41, Richard Damon wrote:

    Why do they need a beginning (at that end)?

    Because there is none in the negative and some in the prositive. At that
    end.


    The is none at the very begining of the negative end, because that "end"
    isn't in the set. The "bottom" of the set of unit fractions is 0.

    There is a boundry, and that is 0, but that isn't the "first" of them,
    as it is outside the set.

    Either the set starts with one unit fraction or with a cloud of unit fractions.

    If you want to think of it as a cloud, go ahead. Just remember, it is a
    VERY DENSE cloud, whose density approaches infinity as it get near 0.
    (and for the real and rational, its density is infinity everywhere).

    Every one is at a different value, but the get closer and closer to each
    other as you try to zoom into that "end point".


    Regards, WM



    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Tue Sep 10 21:53:34 2024
    On 9/10/24 3:07 PM, WM wrote:
    On 10.09.2024 13:59, Richard Damon wrote:

    It isn't an "opaque cloud" that stops them from having a smallest, but
    a infinite accumulation of values at that bound (that is outside the
    set).

    One or finitely many or a cloud. More is not available.

    Regards, WM

    But NONE is still an option

    If you allow your "cloud" to have extent, then you can have your cloud.

    So a cloud of all Aleph_0 unit fractions below x, exist in the range
    (0, x)

    But that is just punting the problem, as that cloud doesn't have a
    smallest element, and all the values are still distinct and are not your
    "dark" numbers, as all of the members are usable individually and are
    defined.

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Tue Sep 10 21:55:51 2024
    On 9/10/24 12:27 PM, WM wrote:
    On 09.09.2024 21:57, joes wrote:
    Am Mon, 09 Sep 2024 20:44:35 +0200 schrieb WM:

    Simplest argument: If a chain of real points exists on the real axis,
    then it has a beginning.
    Proof?

    What else could there be? Any idea?

    Regards, WM


    That there just isn't a first, becuase the set is unbounded, which means
    there isn't a bound to the set in the set, so there isn't that end.

    Just means that you limited logic can't handle it, and you need to
    realize that before you can learn.

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Tue Sep 10 22:01:01 2024
    On 9/9/24 11:15 AM, WM wrote:
    On 09.09.2024 16:32, Python wrote:
    Le 09/09/2024 à 12:19, Prof. Dr. Mückenheim, aka WM a écrit :

    ℵo unit fractions cannot fit into one of the ℵo intervals between two >>> of them.

    (O, x) is NOT an interval between two unit fractions.

    1/n - 1/(n+1) = x is an interval between two unit fraction. This
    interval is shifted to the origin, yielding the interval (0, x). It does
    not contain ℵo unit fractions. It does not contain 1/n.

    Of course it contains aleph_0 unit fractions, but yes, 1/n isn't one of
    them, but you can remove any finite number of unit fractions from the
    set and still have aleph_0 of them.


    Note that unit fractions are points on the real line. Therefore there is
    a beginning. How many unit fractions can be smallerorequal than all unit fractions. This question proves the existence of a smallest unit fraction.

    Nope. Try to name it.

    There are NO unit fractions smaller_or_equal to ALL unit fractions, as
    there isn't a smallest.

    Your logic is just breaking your brain.


    Regards, WM

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  • From Richard Damon@21:1/5 to All on Tue Sep 10 21:58:44 2024
    On 9/10/24 3:10 PM, WM wrote:
    On 10.09.2024 14:07, Richard Damon wrote:

    A GIVEN infinte set of unit fractions will have a total. length of d,
    but by just removing a finite number of the largest elements, you
    still have an infinite set, and the size of that new set can be made
    as small as you want (as long as that value is actually > 0)

    Do countably many points exist as a subdistance of every distance of uncountably many points, like the gaps between two unit fractions?

    Yes, you can find countably many points as subdistances, in fact you can
    find Aleph_0 of them.



    The size of that new set can be made as small as you want

    Even when the size is only countably many points?

    Yes, a countable infinite can have a finite number of elements removed
    and still be countablye infinite.

    Infinites work somewhat differently than finite numbers, as they ae a
    "degree" above them.


    Regards, WM

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  • From Richard Damon@21:1/5 to All on Tue Sep 10 22:09:10 2024
    On 9/10/24 2:59 PM, WM wrote:
    On 10.09.2024 13:09, FromTheRafters wrote:

    Actually, I think he is close to correct. The thing is, he wants the
    first term of the sequence to be last.

    Real points can be addressed from every side.

    Regards, WM


    But only indexed from an actual end point.

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  • From Richard Damon@21:1/5 to All on Tue Sep 10 22:10:43 2024
    On 9/9/24 3:08 PM, WM wrote:
    On 09.09.2024 17:55, joes wrote:
    Am Mon, 09 Sep 2024 17:15:23 +0200 schrieb WM:

    Note that unit fractions are points on the real line. Therefore there is >>> a beginning.
    How does that follow?

    What configuration could be the alternative?

    Regards, WM


    That you accept that unit fractions just don't have a lowest value.

    Note, the "beginning" is 0, it just isn't part of the set, as the set
    doesn't have a smallest value.

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Tue Sep 10 22:11:37 2024
    On 9/10/24 12:18 PM, WM wrote:
    On 09.09.2024 21:51, joes wrote:
    Am Mon, 09 Sep 2024 21:08:42 +0200 schrieb WM:
    On 09.09.2024 17:55, joes wrote:
    Am Mon, 09 Sep 2024 17:15:23 +0200 schrieb WM:

    Note that unit fractions are points on the real line. Therefore there >>>>> is a beginning.
    How does that follow?
    What configuration could be the alternative?
    An infinite chain beginning at 1.

    What begins after zero? Does there something related to unit fractions
    exist?

    Regards, WM


    And infinite set that approaches it arbitrarily close. It is an
    unbounded end.

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  • From WM@21:1/5 to Richard Damon on Wed Sep 11 16:37:30 2024
    On 11.09.2024 04:09, Richard Damon wrote:
    On 9/10/24 2:59 PM, WM wrote:

    Real points can be addressed from every side.

    But only indexed from an actual end point.

    Every real point is an end point (of its subinterval).

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Wed Sep 11 16:35:48 2024
    On 11.09.2024 04:11, Richard Damon wrote:
    On 9/10/24 12:18 PM, WM wrote:

    What begins after zero? Does there something related to unit fractions
    exist?

    And infinite set that approaches it arbitrarily close. It is an
    unbounded end.

    Real points on the real line either are there or are not there. In
    particular they do not "approach" any other point.

    Regards, WM


    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Jim Burns on Wed Sep 11 16:48:05 2024
    On 10.09.2024 23:12, Jim Burns wrote:
    On 9/10/2024 12:16 PM, WM wrote:
    On 09.09.2024 21:43, Jim Burns wrote:

    The unit fractions
      before x > 0 and before x′ > 0
    vary.
    For both x and x′, they are ℵ₀.many,
    but not the same ℵ₀.many.

    The same ℵ₀ many are existing in both cases,

    No.
    They are not the same for ⌊⅟x⌋ < ⌊⅟x′⌋

    The unit fractions are fixed at the real line. If you cut some more or
    some less by x than by x' is irrelevant for the fact that the same ℵo
    unit fractions remain in both cases.

    0, ..., 1/100, x', 1/99, ..., 1/75, x, 1/74, ..., 1/1.
    _Minimum distances of countably.many.points does not exist_


    Every uncountable set has a countable subset, in fact uncoubtably many. Therefore (0, d) c (0, x). (0, d) is coubtable and contains at most one
    unit fraction.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From joes@21:1/5 to All on Wed Sep 11 17:29:35 2024
    Am Wed, 11 Sep 2024 16:37:30 +0200 schrieb WM:
    On 11.09.2024 04:09, Richard Damon wrote:
    On 9/10/24 2:59 PM, WM wrote:

    Real points can be addressed from every side.
    But only indexed from an actual end point.
    Every real point is an end point (of its subinterval).
    What about open intervals?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From Jim Burns@21:1/5 to All on Wed Sep 11 14:11:18 2024
    On 9/11/2024 10:48 AM, WM wrote:
    On 10.09.2024 23:12, Jim Burns wrote:
    On 9/10/2024 12:16 PM, WM wrote:
    On 09.09.2024 21:43, Jim Burns wrote:

    The unit fractions
      before x > 0 and before x′ > 0
    vary.
    For both x and x′, they are ℵ₀.many,
    but not the same ℵ₀.many.

    The same ℵ₀ many are existing in both cases,

    No.
    They are not the same for ⌊⅟x⌋ < ⌊⅟x′⌋

    The unit fractions are fixed at the real line.
    If you cut some more or some less by x than by x'
    is irrelevant for the fact that
    the same ℵo unit fractions remain in both cases.

    ⅟⌊k+⅟x⌋ ⟷ ⅟⌊k+⅟x′⌋
    is a bijection between different visibleᵂᴹ unit.fractions
    ⅟⌊k+⅟x⌋ ≠ ⅟⌊k+⅟x′⌋

    ⅟ℕ⁺∩(0,x) the visibleᵂᴹ unit.fractions < x
    is bijectible with
    ⅟ℕ⁺∩(0,x′) the visibleᵂᴹ unit.fractions < x′
    but they hold different unit.fractions.

    Also, ⅟ℕ⁺∩(0,x) is a proper superset of ⅟ℕ⁺∩(0,x′)
    which can't be true for bijectible finite sets.
    Conclusion: ⅟ℕ⁺∩(0,x) and ⅟ℕ⁺∩(0,x′) aren't finite sets.

    Whether darkᵂᴹ exist or not.exist,
    those facts about sets of visibleᵂᴹ unit fractions
    do not change.

    ⎛ There is a separate argument that
    ⎜ a positive greatest.lower.bound β of ⅟ℕᵈᵉᶠ
    ⎜ requires that
    ⎜ ½.β is undercut by a visible unit.fraction and
    ⎜ ½.β is NOT undercut by a visible unit.fraction
    ⎜ It's impossible for both to be true.

    ⎜ Therefore,
    ⎜ it is impossible for
    ⎝ darkᵂᴹ points to be between 0 and ⅟ℕᵈᵉᶠ

    With or without darkᵂᴹ points,
    ∀ᴿx > 0: NUF(x) ≥ NUFᵈᵉᶠ(x) = ℵ₀

    0, ..., 1/100, x', 1/99, ..., 1/75, x, 1/74, ..., 1/1.

    0 is not a unit.fraction.

    ..., 1/100, x', 1/99, ..., 1/75, x, 1/74, ..., 1/1.
    holds only visibleᵂᴹ unit fractions
    (darkᵂᴹ not.exist)

    For each visible unit fraction,
    there is a counter.example to
    the claim that it is first.

    Anything not.in
    ..., 1/100, x', 1/99, ..., 1/75, x, 1/74, ..., 1/1.
    is not.first.in
    ..., 1/100, x', 1/99, ..., 1/75, x, 1/74, ..., 1/1.

    Therefore,
    no first exists of
    ..., 1/100, x', 1/99, ..., 1/75, x, 1/74, ..., 1/1.

    ..., 1/100, x', 1/99, ..., 1/75, x, 1/74, ..., 1/1.
    is infinite.

    _Minimum distances of countably.many.points does not exist_

    Every uncountable set has a countable subset,
    in fact uncoubtably many.
    Therefore (0, d) c (0, x).

    (0,d) is an interval as well as a set.
    (0,d) := {y ∈ ℝ: 0 < y < d}

    y ⟷ d⋅y
    is a bijection between (0,1) and (0,d)
    |(0,1)| = |(0,d)|

    Also, (0,1) is a proper superset of (0,d)
    which can't be true for bijectible finite sets.
    Conclusion: (0,1) and (0,d) aren't finite sets.

    (0, d) is coubtable and contains at most one
    unit fraction.

    No.
    0 < ... < ⅟⌊2+⅟d⌋ < ⅟⌊1+⅟d⌋ < d

    --- SoupGate-Win32 v1.05
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  • From Jim Burns@21:1/5 to All on Wed Sep 11 14:52:11 2024
    On 9/11/2024 10:35 AM, WM wrote:
    On 11.09.2024 04:11, Richard Damon wrote:
    On 9/10/24 12:18 PM, WM wrote:

    What begins after zero?
    Does there
    something related to unit fractions
    exist?

    And infinite set that approaches it
    arbitrarily close.
    It is an unbounded end.

    Real points on the real line
    either are there or are not there.

    Sets of real.line.points and
    real.line.points
    are not the same things.

    In particular
    they do not "approach" any other point.

    Define β as
    the greatest.lower.bound of visiblesᵂᴹ ⅟ℕᵈᵉᶠ
    β = glb.⅟ℕᵈᵉᶠ

    Positive β requires impossibilities.
    It requires that ½.β
    both IS and IS NOT
    undercut by a visibleᵂᴹ unit.fraction.

    0 = glb.⅟ℕᵈᵉᶠ

    0 is not.in ⅟ℕᵈᵉᶠ
    but no gap exists between 0 and ⅟ℕᵈᵉᶠ
    (No positive.lower.bound.)

    ⅟ℕᵈᵉᶠ does not change. (Sets do not change.)
    We use "approach" to say "no gap".

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to joes on Wed Sep 11 21:40:59 2024
    On 11.09.2024 19:29, joes wrote:
    Am Wed, 11 Sep 2024 16:37:30 +0200 schrieb WM:
    On 11.09.2024 04:09, Richard Damon wrote:
    On 9/10/24 2:59 PM, WM wrote:

    Real points can be addressed from every side.
    But only indexed from an actual end point.
    Every real point is an end point (of its subinterval).
    What about open intervals?

    Open intervals are intervals which have dark endpoints. Note that
    between any pair of visible real numbers there are many dark real numbers.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Jim Burns on Wed Sep 11 21:48:43 2024
    On 11.09.2024 20:11, Jim Burns wrote:
    On 9/11/2024 10:48 AM, WM wrote:

    The unit fractions are fixed at the real line.
    If you cut some more or some less by x than by x'
    is irrelevant for the fact that
    the same ℵo unit fractions remain in both cases.

    ⅟⌊k+⅟x⌋ ⟷ ⅟⌊k+⅟x′⌋
    is a bijection between different visibleᵂᴹ unit.fractions
    ⅟⌊k+⅟x⌋ ≠ ⅟⌊k+⅟x′⌋

    So it appears, but that does not contradict what I said.

    0, ..., 1/100, x', 1/99, ..., 1/75, x, 1/74, ..., 1/1.

    0 is not a unit.fraction.

    No, but I cannot give the smallest unit fraction.
    From it to 1/100 all unit fractions are the same in (0, x) and (0, x').

    ..., 1/100, x', 1/99, ..., 1/75, x, 1/74, ..., 1/1.
    holds only visibleᵂᴹ unit fractions

    The first ℵo unit fractions are dark.

    This example shows that you were mistaken. All intervals (0, x) with
    visible x have a set of ℵo unit fractions between (0 and x) in common.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Jim Burns on Wed Sep 11 21:53:40 2024
    On 11.09.2024 20:52, Jim Burns wrote:
    On 9/11/2024 10:35 AM, WM wrote:

    Real points on the real line
    either are there or are not there.

    Sets of real.line.points and
    real.line.points
    are not the same things.

    But we need not use sets at all if we use the points.

    In particular
    they do not "approach" any other point.

    Define β as
    the greatest.lower.bound of visiblesᵂᴹ ⅟ℕᵈᵉᶠ
    β = glb.⅟ℕᵈᵉᶠ

    Positive β requires impossibilities.
    It requires that ½.β
    both IS and IS NOT
    undercut by a visibleᵂᴹ unit.fraction.

    In some dark cases ½.β does not exist.

    ⅟ℕᵈᵉᶠ does not change. (Sets do not change.)

    Because their elements, here: the points do not change.
    But you claim that if β exists, then ½.β exists. And if ½.β exists, then β/4 exists, and so on. That is potential infinity. If all exists, then a smallest exists.

    Regards, WM


    We use "approach" to say "no gap".



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  • From Richard Damon@21:1/5 to All on Wed Sep 11 21:04:15 2024
    On 9/11/24 3:40 PM, WM wrote:
    On 11.09.2024 19:29, joes wrote:
    Am Wed, 11 Sep 2024 16:37:30 +0200 schrieb WM:
    On 11.09.2024 04:09, Richard Damon wrote:
    On 9/10/24 2:59 PM, WM wrote:

    Real points can be addressed from every side.
    But only indexed from an actual end point.
    Every real point is an end point (of its subinterval).
    What about open intervals?

    Open intervals are intervals which have dark endpoints. Note that
    between any pair of visible real numbers there are many dark real numbers.

    Regards, WM


    No, Open intervals are intervals that exclude the endpoint from the
    interval, and thus don't HAVE an "endpoint".

    But the, you call what you don't understand as "dark" so you think you
    don't need to understand it.

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Wed Sep 11 21:00:05 2024
    On 9/11/24 10:37 AM, WM wrote:
    On 11.09.2024 04:09, Richard Damon wrote:
    On 9/10/24 2:59 PM, WM wrote:

    Real points can be addressed from every side.

    But only indexed from an actual end point.

    Every real point is an end point (of its subinterval).

    Regards, WM


    Yes, so you can "Address" (give a value) but not an index (a count).

    So, you can't "index" an unbounded set of unit fractions from 0, as
    there isn't a "first" unit fraction from that end.

    We can "address" those unit fractions with the value, but we can not
    "index" them from 0, only from 1/1.

    --- SoupGate-Win32 v1.05
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  • From Jim Burns@21:1/5 to All on Thu Sep 12 01:03:40 2024
    On 9/11/2024 3:53 PM, WM wrote:
    On 11.09.2024 20:52, Jim Burns wrote:

    ⅟ℕᵈᵉᶠ does not change. (Sets do not change.)

    Because their elements,
    here: the points
    do not change.

    Mathematical sets do not change
    because
    mathematical sets are immaterial;
    thus, a different set merely to hold
    slightly different elements
    weighs nothing and costs nothing.

    Mathematical sets do not change
    because,
    in an all.not.first.false finite claim.sequence,
    claims about
    mathematical sets both with and without some element
    are NOT reliably.true.

    Mathematical sets do not change
    because,
    in an all.not.first.false finite claim.sequence,
    claims about
    mathematical sets NOT both with and without some element
    ARE reliably.true,
    even if they're about infinitely.many never.seen
    -- and, in that way,
    unchanging sets can serve as a finite tool with which
    to explore infinity.

    β = glb.⅟ℕᵈᵉᶠ

    Positive β requires impossibilities.
    It requires that ½.β
    both IS and IS NOT
    undercut by a visibleᵂᴹ unit.fraction.

    In some dark cases ½.β does not exist.

    For each β, ½⋅β exists
    among points (in ℝ) situating
    splits (of ℚ) of differences of ratios of
    of points (in ℕ) countable.to from 1,
    which is to say well.ordered,
    with each point successored and predecessored
    except the first point, 1, only successored.

    If darkᵂᴹ β allows ½⋅β to not.exist,
    then darkᵂᴹ β not.exists among the points of ℝ
    as described here.

    For each of those β, ½⋅β exists.
    However,
    no ½⋅β exists for positive β = glb.⅟ℕᵈᵉᶠ
    Therefore,
    none of those β are positive β = glb.⅟ℕᵈᵉᶠ

    0 = glb.⅟ℕᵈᵉᶠ
    No gap exists between 0 and ⅟ℕᵈᵉᶠ
    No points not undercut by points of ⅟ℕᵈᵉᶠ

    But you claim that if β exists, then ½.β exists.
    And if ½.β exists, then β/4 exists, and so on.

    There's a proof.

    That is potential infinity.

    You (WM) apparently only say "potential infinity"
    when you've recognized that you've lost an argument.
    I accept your concession.

    If all exists, then a smallest exists.

    In ℝ.points situating ℚ.splits of
    differences.of.ratios of countable.to ℕ.points,
    no smallest exists.

    We use "approach" to say "no gap".

    For example,
    ⎛ ⅟ℕᵈᵉᶠ approaches 0
    ⎜ 0 = glb.⅟ℕᵈᵉᶠ
    ⎜ 0 ≤ᵉᵃᶜʰ ⅟ℕᵈᵉᶠ
    ⎝ ¬∃ᴿx: 0 < x ≤ᵉᵃᶜʰ ⅟ℕᵈᵉᶠ

    And infinite set that approaches it
    arbitrarily close.
    It is an unbounded end.

    Real points on the real line
    either are there or are not there.

    Sets of real.line.points and
    real.line.points
    are not the same things.

    But we need not use sets at all
    if we use the points.

    If you use points as sets, expect gibberish.

    For each point x in (0,1]: 0 < x/2 < x
    No point exists between 0 and (0,1]

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Richard Damon on Thu Sep 12 13:24:01 2024
    On 12.09.2024 03:04, Richard Damon wrote:
    On 9/11/24 3:40 PM, WM wrote:

    Open intervals are intervals which have dark endpoints. Note that
    between any pair of visible real numbers there are many dark real
    numbers.

    No, Open intervals are intervals that exclude the endpoint from the
    interval, and thus don't HAVE an "endpoint".

    Intervals consist of points. Where no point is, there is no interval.
    Where an interval is, there is a point. The belif in an interval-end
    without points is pure matheology.

    Regards, WM

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  • From WM@21:1/5 to All on Thu Sep 12 11:15:18 2024
    Le 11/09/2024 à 23:13, FromTheRafters a écrit :
    Chris M. Thomasson laid this down on his screen :
    On 9/11/2024 12:40 PM, WM wrote:

    Open intervals are intervals which have dark endpoints.

    What about the gray ones?

    Grey points are dark points which can become visible. But the endpoints of
    open intervals will remain dark forever.

    Regards, WM

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  • From WM@21:1/5 to Jim Burns on Thu Sep 12 13:27:20 2024
    On 12.09.2024 07:03, Jim Burns wrote:
    On 9/11/2024 3:53 PM, WM wrote:
    On 11.09.2024 20:52, Jim Burns wrote:

    ⅟ℕᵈᵉᶠ does not change. (Sets do not change.)

    Because their elements,
    here: the points
    do not change.

    Mathematical sets do not change
    because
    mathematical sets are immaterial;
    thus, a different set merely to hold
    slightly different elements
    weighs nothing and costs nothing.

    Mathematical sets do not change
    because,
    in an all.not.first.false finite claim.sequence,
    claims about
    mathematical sets both with and without some element
    are NOT reliably.true.

    Mathematical sets do not change
    because,
    in an all.not.first.false finite claim.sequence,
    claims about
    mathematical sets NOT both with and without some element
    ARE reliably.true,
    even if they're about infinitely.many never.seen
    -- and, in that way,
    unchanging sets can serve as a finite tool with which
    to explore infinity.

    β = glb.⅟ℕᵈᵉᶠ

    Positive β requires impossibilities.
    It requires that ½.β
    both IS and IS NOT
    undercut by a visibleᵂᴹ unit.fraction.

    In some dark cases ½.β does not exist.

    For each β, ½⋅β exists
    among points (in ℝ) situating
    splits (of ℚ) of differences of ratios of
    of points (in ℕ) countable.to from 1,
    which is to say well.ordered,
    with each point successored and predecessored
    except the first point, 1, only successored.

    If darkᵂᴹ β allows ½⋅β to not.exist,
    then darkᵂᴹ β not.exists among the points of ℝ
    as described here.

    For each of those β, ½⋅β exists.
    However,
    no ½⋅β exists for positive β = glb.⅟ℕᵈᵉᶠ
    Therefore,
    none of those β are positive β = glb.⅟ℕᵈᵉᶠ

    0 = glb.⅟ℕᵈᵉᶠ
    No gap exists between 0 and ⅟ℕᵈᵉᶠ
    No points not undercut by points of ⅟ℕᵈᵉᶠ

    But you claim that if β exists, then ½.β exists.
    And if ½.β exists, then β/4 exists, and so on.

    There's a proof.

    That is potential infinity.

    You (WM) apparently only say "potential infinity"
    when you've recognized that you've lost an argument.
    I accept your concession.

    If all exists, then a smallest exists.

    In ℝ.points situating ℚ.splits of
    differences.of.ratios of countable.to ℕ.points,
    no smallest exists.

    We use "approach" to say "no gap".

    For example,
    ⎛ ⅟ℕᵈᵉᶠ approaches 0
    ⎜ 0 = glb.⅟ℕᵈᵉᶠ
    ⎜ 0 ≤ᵉᵃᶜʰ ⅟ℕᵈᵉᶠ
    ⎝ ¬∃ᴿx: 0 < x ≤ᵉᵃᶜʰ ⅟ℕᵈᵉᶠ

    And infinite set that approaches it
    arbitrarily close.
    It is an unbounded end.

    Real points on the real line
    either are there or are not there.

    Sets of real.line.points and
    real.line.points
    are not the same things.

    But we need not use sets at all
    if we use the points.

    If you use points as sets, expect gibberish.

    Use points *as points* and investigate their properties.

    For each point x in (0,1]: 0 < x/2 < x
    No point exists between 0 and (0,1]

    Nevertheless (0,1] has a smallest point. It is dark. Where no point is,
    there is no interval. Interval-ends without points are matheology.

    Regards, WM



    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Thu Sep 12 13:39:58 2024
    On 12.09.2024 07:03, Jim Burns wrote:
    On 9/11/2024 3:53 PM, WM wrote:

    But you claim that if β exists, then ½.β exists.
    And if ½.β exists, then β/4 exists, and so on.

    There's a proof.

    It is based on an axiom which does not reproduce real mathematics.

    But we need not use sets at all
    if we use the points.

    If you use points as sets, expect gibberish.

    Use points *as points* and investigate their properties.

    For each point x in (0,1]: 0 < x/2 < x
    No point exists between 0 and (0,1]

    Nevertheless (0,1] has a smallest point. It is dark. Where no point is,
    there is no interval. Interval-ends without points are matheology.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to All on Thu Sep 12 11:18:30 2024
    Le 12/09/2024 à 03:00, Richard Damon a écrit :

    So, you can't "index" an unbounded set of unit fractions from 0, as
    there isn't a "first" unit fraction from that end.

    We can "address" those unit fractions with the value, but we can not
    "index" them from 0, only from 1/1.

    If you can index all unit fractions, then you can index them from every
    side.
    Fact is that NUF(x) increases from 0, but at no point it can inc4rease by
    more than 1 because of
    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Thu Sep 12 08:29:19 2024
    On 9/12/24 7:24 AM, WM wrote:
    On 12.09.2024 03:04, Richard Damon wrote:
    On 9/11/24 3:40 PM, WM wrote:

    Open intervals are intervals which have dark endpoints. Note that
    between any pair of visible real numbers there are many dark real
    numbers.

    No, Open intervals are intervals that exclude the endpoint from the
    interval, and thus don't HAVE an "endpoint".

    Intervals consist of points. Where no point is, there is no interval.
    Where an interval is, there is a point. The belif in an interval-end
    without points is pure matheology.

    Regards, WM

    But there isn't a spot on the line without a "point", so there is no
    spot with "no point"

    Yes, it may be matheology, but that matheology is the only way to HAVE
    that line,

    Your "logic" just blew itself up when you went from a line with a finite
    number of descrete point, to being continous.

    Sorry, you are just too stupid to understand the limitiations of your logic,

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Thu Sep 12 08:35:21 2024
    On 9/12/24 7:18 AM, WM wrote:
    Le 12/09/2024 à 03:00, Richard Damon a écrit :

    So, you can't "index" an unbounded set of unit fractions from 0, as
    there isn't a "first" unit fraction from that end.

    We can "address" those unit fractions with the value, but we can not
    "index" them from 0, only from 1/1.

    If you can index all unit fractions, then you can index them from every
    side.
    Fact is that NUF(x) increases from 0, but at no point it can inc4rease
    by more than 1 because of
    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0
    Regards, WM



    Nope, that ASSUMPTION just means you can't actually have an infinite
    set, as you can't get to the upper end to let you count down.


    1/n - 1/(n+1) > 0 thus says that no 1/n is the smallest, as there will
    exist a 1/(n+1) that is smaller that that.

    Your claim boils down to a claim that there exists some n in the Natural Numbers that doesn't have a next number, and thus your set of Natural
    Numbers is NOT the infinite set they are defined to be, but only some
    finite initial subsequence of the real numbers, and your logic never had
    a correct idea of infinity,

    Sorry, you are just proving that you werte NEVER talking about the
    actual set of Natural Numbers, just some made up finite subset of them,
    and your "dark" numbers are just the actual existing Natural Numbers
    that you have refused to look at because you ran out of ways to count to
    them.

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  • From Richard Damon@21:1/5 to All on Thu Sep 12 08:38:47 2024
    On 9/12/24 7:39 AM, WM wrote:
    On 12.09.2024 07:03, Jim Burns wrote:
    On 9/11/2024 3:53 PM, WM wrote:

    But you claim that if β exists, then ½.β exists.
    And if ½.β exists, then β/4 exists, and so on.

    There's a proof.

    It is based on an axiom which does not reproduce real mathematics.

    No, it is based on the axiom that produces the real mathematics, not you
    toy set that is all you can think of,


    But we need not use sets at all
    if we use the points.

    If you use points as sets, expect gibberish.

    Use points *as points* and investigate their properties.

    Which means you need to start with the definition of what the points are.


    For each point x in (0,1]: 0 < x/2 < x
    No point exists between 0 and (0,1]

    Nevertheless (0,1] has a smallest point. It is dark. Where no point is,
    there is no interval. Interval-ends without points are matheology.

    Except you can't define such a smallest point, and in fact, due to the
    normal property of points, there can't be a smallest in an unbounded
    from below set of points.


    Regards, WM



    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to FromTheRafters on Thu Sep 12 19:48:56 2024
    On 12.09.2024 14:29, FromTheRafters wrote:
    After serious thinking WM wrote :
    Le 11/09/2024 à 23:13, FromTheRafters a écrit :
    Chris M. Thomasson laid this down on his screen :
    On 9/11/2024 12:40 PM, WM wrote:

    Open intervals are intervals which have dark endpoints.

    What about the gray ones?

    Grey points are dark points which can become visible.

    Points which change? What function causes a point to change?

    For an eartworm all numbers are dark, for a dove numbers 1 to 7 are
    visible, for your pocket calculator numbers 1 to 10^99 are visible. If
    you couple some calculators, you get farther.

    But the endpoints of open intervals will remain dark forever.

    Open intervals simply don't contain endpoints, dark or otherwise.

    You simply don't know about them. No spot of an interval is free of
    points. No point of an interval is free of points.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Thu Sep 12 19:44:34 2024
    On 12.09.2024 14:29, Richard Damon wrote:
    On 9/12/24 7:24 AM, WM wrote:
    On 12.09.2024 03:04, Richard Damon wrote:
    On 9/11/24 3:40 PM, WM wrote:

    Open intervals are intervals which have dark endpoints. Note that
    between any pair of visible real numbers there are many dark real
    numbers.

    No, Open intervals are intervals that exclude the endpoint from the
    interval, and thus don't HAVE an "endpoint".

    Intervals consist of points. Where no point is, there is no interval.
    Where an interval is, there is a point. The belief in an interval-end
    without points is pure matheology.

    But there isn't a spot on the line without a "point", so there is no
    spot with "no point"

    Therefore the end of an open interval consist of points.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Thu Sep 12 19:54:38 2024
    On 12.09.2024 14:35, Richard Damon wrote:
    On 9/12/24 7:18 AM, WM wrote:
    Le 12/09/2024 à 03:00, Richard Damon a écrit :

    So, you can't "index" an unbounded set of unit fractions from 0, as
    there isn't a "first" unit fraction from that end.

    We can "address" those unit fractions with the value, but we can not
    "index" them from 0, only from 1/1.

    If you can index all unit fractions, then you can index them from
    every side.
    Fact is that NUF(x) increases from 0, but at no point it can increase
    by more than 1 because of
    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0

    Nope, that ASSUMPTION just means you can't actually have an infinite
    set, as you can't get to the upper end to let you count down.

    Wrong. Dark numbers prevent counting to the end. Dark numbers establish
    the existence of a set where no end can be seen. That is the only way to
    make infinity and completeness compatible.

    1/n - 1/(n+1) > 0 thus says that no 1/n is the smallest, as there will
    exist a 1/(n+1) that is smaller that that.

    That is not a proof of existence. The formula says: If n and n+1 exist,
    then they differ.

    Regards, WM

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  • From Jim Burns@21:1/5 to Ross Finlayson on Thu Sep 12 14:05:56 2024
    On 9/10/2024 8:24 PM, Ross Finlayson wrote:
    On 09/10/2024 02:21 AM, Jim Burns wrote:
    On 9/9/2024 11:11 PM, Ross Finlayson wrote:
    On 09/09/2024 11:23 AM, Jim Burns wrote:
    On 9/9/2024 12:59 PM, Ross Finlayson wrote:
    On 09/08/2024 09:59 PM, Jim Burns wrote:
    On 9/8/2024 6:34 PM, Ross Finlayson wrote:

    It's already been thoroughly elaborated and
    as attached to formalistic symbolry,
    that "Russell's thesis, of an antinomy" is that
    the set of
    the finite sets that don't contain themselves,
    exactly like the ordinals are mostly simply modeled to be,
    does and doesn't contain itself,

    I wonder what your own conscientious response
    will be to the infiniteness of the set of
    all finite non.self.membered sets.

    To your question, "are the finites infinite",
    well yeah.

    It seems to me (JB) that

    ⎜ Russell's thesis is that
    ⎜ the set of
    ⎜ the finite sets that don't contain themselves
    ⎜ does and doesn't contain itself

    is and is not what you (RF) are claiming.

    Oh, perhaps, maybe, in a sense, weighing alternatives,
    it's what I'm claiming is that it isn't and not is
    what BR Bertrand Russell is claiming.

    Bertrand Russel's set is
    the set of all non.self.membered sets.
    not the set of all _finite_ non.self.membered sets.

    If you intend to debate that,
    it would be good to get it over and done with
    instead of rushing past it
    to what might be more interesting questions.

    Of course, overgeneralization is generally unsound,

    Surely,
    not all generalizations are over.generalizations.

    Consider
    ⎛ Each nonempty set of ordinals
    ⎝ holds a first element.

    Very general. Very true. We know it is because of
    _what we mean_ by 'ordinal'.

    From such (not.over).generalizations
    further (not.over).generalizations follow
    -- in a not.first.false finite order --
    (not.over).generalizations which we didn't know,
    but we do now, after having seen them in that order.
    We call them 'theorems' and the order 'proofs'.

    For example,
    ⎛ Each nonempty set of ordinals
    ⎜ holds a first element.

    ⎜ {α,β: α≠β}
    ⎜ holds a first element, α or β
    ⎜ α≠β ⇒ α<β ∨ β<α

    ⎜ {α,β,γ: α<β, β<γ}
    ⎜ holds a first element, not β and not γ
    ⎜ α is its first element
    ⎝ α<β ∧ β<γ ⇒ α<γ

    By definition, α≤α and ¬(α<α)

    (Not.over).generalizing,
    the ordinals are linearly ordered.

    Consider an ordinal as
    the set of all earlier ordinals.
    β = {α:α<β}

    Because the ordinals are linearly ordered,
    no ordinal is earlier than itself,
    no ordinal is self.membered.

    while there are absolutes in logic,
    and for example
    the unbounded and completions and closures in logic,
    which you make BR a dupe and dupe you to unfasten.

    Now, maybe this message will reach you or
    maybe it won't, ...,
    maybe it won't.

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  • From Richard Damon@21:1/5 to All on Thu Sep 12 14:15:15 2024
    On 9/12/24 1:48 PM, WM wrote:
    On 12.09.2024 14:29, FromTheRafters wrote:
    After serious thinking WM wrote :
    Le 11/09/2024 à 23:13, FromTheRafters a écrit :
    Chris M. Thomasson laid this down on his screen :
    On 9/11/2024 12:40 PM, WM wrote:

    Open intervals are intervals which have dark endpoints.

    What about the gray ones?

    Grey points are dark points which can become visible.

    Points which change? What function causes a point to change?

    For an eartworm all numbers are dark, for a dove numbers 1 to 7 are
    visible, for your pocket calculator numbers 1 to 10^99 are visible. If
    you couple some calculators, you get farther.

    So, you are admitting that your "Dark Numbers" are just caused by your
    having insufficent intelegence to understand the true nature of the
    actual Natural Number System.



    But the endpoints of open intervals will remain dark forever.

    Open intervals simply don't contain endpoints, dark or otherwise.

    You simply don't know about them. No spot of an interval is free of
    points. No point of an interval is free of points.

    Right, and that includes the space between the point you think is the
    first point of the open interval and the end point of that interval
    (which is outside the interval) proving that your point wasn't the first
    there.


    Regards, WM


    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Thu Sep 12 14:16:36 2024
    On 9/12/24 1:44 PM, WM wrote:
    On 12.09.2024 14:29, Richard Damon wrote:
    On 9/12/24 7:24 AM, WM wrote:
    On 12.09.2024 03:04, Richard Damon wrote:
    On 9/11/24 3:40 PM, WM wrote:

    Open intervals are intervals which have dark endpoints. Note that
    between any pair of visible real numbers there are many dark real
    numbers.

    No, Open intervals are intervals that exclude the endpoint from the
    interval, and thus don't HAVE an "endpoint".

    Intervals consist of points. Where no point is, there is no interval.
    Where an interval is, there is a point. The belief in an interval-end
    without points is pure matheology.

    But there isn't a spot on the line without a "point", so there is no
    spot with "no point"

    Therefore the end of an open interval consist of points.

    The "end" of the open interval isn't in the interval, that is why it is
    called "open".

    There is no "first" point of that interval, just an infinite set of
    points approaching that point.


    Regards, WM


    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Thu Sep 12 14:20:09 2024
    On 9/12/24 1:54 PM, WM wrote:
    On 12.09.2024 14:35, Richard Damon wrote:
    On 9/12/24 7:18 AM, WM wrote:
    Le 12/09/2024 à 03:00, Richard Damon a écrit :

    So, you can't "index" an unbounded set of unit fractions from 0, as
    there isn't a "first" unit fraction from that end.

    We can "address" those unit fractions with the value, but we can not
    "index" them from 0, only from 1/1.

    If you can index all unit fractions, then you can index them from
    every side.
    Fact is that NUF(x) increases from 0, but at no point it can increase
    by more than 1 because of
    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0

    Nope, that ASSUMPTION just means you can't actually have an infinite
    set, as you can't get to the upper end to let you count down.

    Wrong. Dark numbers prevent counting to the end. Dark numbers establish
    the existence of a set where no end can be seen. That is the only way to
    make infinity and completeness compatible.

    1/n - 1/(n+1) > 0 thus says that no 1/n is the smallest, as there will
    exist a 1/(n+1) that is smaller that that.

    That is not a proof of existence. The formula says: If n and n+1 exist,
    then they differ.

    Regards, WM

    No, it says that if n is in the Natural Numbers, then the value of the expression 1/n - 1/(n+1) is greater than 0, and thus must exist, and
    thus n+1 must exist.

    If you think there is some n that exist that doesn't have an n+1 that
    exist, then your idea of the Natural Number system is just incorrect,
    and you are admitting that you only have afinite set of numbers, and
    thus NUF(1) must be a finite number, not Alehp_0, so everything you have
    said about it is just a lie.

    --- SoupGate-Win32 v1.05
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  • From Jim Burns@21:1/5 to All on Thu Sep 12 15:12:36 2024
    On 9/12/2024 7:39 AM, WM wrote:
    On 12.09.2024 07:03, Jim Burns wrote:
    On 9/11/2024 3:53 PM, WM wrote:

    But you claim that if β exists, then ½.β exists.
    And if ½.β exists, then β/4 exists, and so on.

    There's a proof.

    It is based on an axiom which
    does not reproduce real mathematics.

    It is based on
    ⎛ each positive.integer j having
    ⎜ first.after positive.integer j+1 and
    ⎜ last.before positive.integer j-1
    ⎜ (except min.positive.integer 1 with first.after 2)
    ⎜ and
    ⎜ each nonempty set A of positive integers holding min.A

    ⎜ And each rational number being
    ⎜ the difference of ratios j/k-j′/k′ of positive integers

    ⎜ And each real number x being
    ⎜ situated at a split S ⊆ ℚ of all rational numbers.
    ⎝ {} ≠ S ᵉᵃᶜʰ< x ≤ᵉᵃᶜʰ ℚ\S ≠ {}

    If you (WM) aren't talking about those,
    then you aren't talking about those.

    ⎛ Kits, cats, sacks, wives:
    ⎝ how many were going to St. Ives?

    But we need not use sets at all
    if we use the points.

    If you use points as sets, expect gibberish.

    Use points *as points* and
    investigate their properties.

    If you decide beforehand
    what your "investigation" will "reveal",
    expect whatever _seemed obvious_ at first
    to devolve into gibberish.

    You are a finite being.
    ⎛ Expecting infinity to be unsurprising
    ⎜ is like
    ⎜ traveling to Outer Mongolia and
    ⎝ expecting everyone there to speak perfect German.

    Infinity is foreign.
    Foreign isn't uninvestigatable,
    but it also isn't same.as.it.always.was.

    For each point x in (0,1]: 0 < x/2 < x
    No point exists between 0 and (0,1]

    Nevertheless (0,1] has a smallest point.
    It is dark.
    Where no point is, there is no interval.
    Interval-ends without points are matheology.

    "Obvious" has devolved into gibberish.

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  • From Jim Burns@21:1/5 to All on Thu Sep 12 16:54:52 2024
    On 9/12/2024 1:48 PM, WM wrote:
    On 12.09.2024 14:29, FromTheRafters wrote:
    After serious thinking WM wrote :

    But the endpoints of open intervals
    will remain dark forever.

    Open intervals simply don't contain endpoints,
    dark or otherwise.

    You simply don't know about them.

    The boundary ∂A of set A is
    the set of points x such that
    each open set Oₓ ∋ x
    holds points in A and points not.in A

    A closed set contains all of its boundary.
    An open set contains none of its boundary.

    The topology in which
    intervals holding endpoints are open
    is a topology in which
    the intersection of two (open) intervals
    is open,
    a one.point interval.intersection
    is open,
    the arbitrary union of (open) one.point intervals
    is open, and
    all sets are open.

    We call that the discrete topology.
    Yes, it is an actual topology.
    It is not what anyone else considers
    the standard topology of ℝ

    ⎛ Axioms for topological.space X

    ⎜ The intersection of two open sets is open.

    ⎜ The union of arbitrarily.many open sets is open.

    ⎝ {} and X are open.

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  • From Moebius@21:1/5 to All on Thu Sep 12 23:40:29 2024
    Am 12.09.2024 um 22:36 schrieb Chris M. Thomasson:
    On 9/2/2024 10:07 AM, WM wrote:

    How many different unit fractions are lessorequal than all unit
    fractions? [A wrong/nonsensical] answer is: one [or more] unit fraction[s]. >>
    [The correct] answer is that no unit fraction is lessorequal than all unit >> fractions. [...]

    [In math] there is only the one correct answer given above.

    Indeed, Mückenheim!

    Is this your Dog?

    https://youtu.be/ADRGgyhX4YE?t=43

    Holy shit, dude!

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  • From Jim Burns@21:1/5 to Ross Finlayson on Thu Sep 12 18:00:03 2024
    On 9/12/2024 4:42 PM, Ross Finlayson wrote:
    On 09/10/2024 02:21 AM, Jim Burns wrote:

    (re-sent)

    Oh, perhaps, maybe, in a sense, weighing alternatives,
    it's what I'm claiming is that it isn't and not is
    what BR Bertrand Russell is claiming.

    Bertrand Russel's set is
    the set of all non.self.membered sets.
    not the set of all _finite_ non.self.membered sets.

    If you intend to debate that,
    it would be good to get it over and done with
    instead of rushing past it
    to what might be more interesting questions.

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  • From joes@21:1/5 to All on Fri Sep 13 06:40:40 2024
    Am Thu, 12 Sep 2024 19:44:34 +0200 schrieb WM:
    On 12.09.2024 14:29, Richard Damon wrote:
    On 9/12/24 7:24 AM, WM wrote:
    On 12.09.2024 03:04, Richard Damon wrote:
    On 9/11/24 3:40 PM, WM wrote:

    Open intervals are intervals which have dark endpoints. Note that
    between any pair of visible real numbers there are many dark real
    numbers.
    No, Open intervals are intervals that exclude the endpoint from the
    interval, and thus don't HAVE an "endpoint".
    Intervals consist of points. Where no point is, there is no interval.
    Where an interval is, there is a point. The belief in an interval-end
    without points is pure matheology.
    But there isn't a spot on the line without a "point", so there is no
    spot with "no point"
    Therefore the end of an open interval consist of points.
    The "end" of an interval is a number such that no element is larger/
    smaller, defined as the limit, which may or may not be included.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From WM@21:1/5 to Richard Damon on Fri Sep 13 17:43:49 2024
    On 12.09.2024 20:16, Richard Damon wrote:
    On 9/12/24 1:44 PM, WM wrote:

    Therefore the end of an open interval consist of points.

    The "end" of the open interval isn't in the interval, that is why it is called "open".

    The end of the interval is a point of the interval. It is called open
    because next to a definable point there are always dark points.

    There is no "first" point of that interval, just an infinite set of
    points

    Yes, dark points.

    approaching that point.

    Points do not approach. They are fixed.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Fri Sep 13 17:41:34 2024
    On 12.09.2024 20:15, Richard Damon wrote:
    On 9/12/24 1:48 PM, WM wrote:
    No spot of an interval is free of
    points. No point of an interval is free of points.

    Right, and that includes the space between the point you think is the
    first point of the open interval and the end point of that interval

    Between [0, 1] and (0, 1] there is nothing, there is not a spot or point
    of the interval.

    Regards, WM

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  • From Richard Damon@21:1/5 to All on Fri Sep 13 11:52:26 2024
    On 9/13/24 11:41 AM, WM wrote:
    On 12.09.2024 20:15, Richard Damon wrote:
    On 9/12/24 1:48 PM, WM wrote:
    No spot of an interval is free of points. No point of an interval is
    free of points.

    Right, and that includes the space between the point you think is the
    first point of the open interval and the end point of that interval

    Between [0, 1] and (0, 1] there is nothing, there is not a spot or point
    of the interval.

    Regards, WM


    Right, just a missing 0.

    But that doesn't mean there is a lowest most point in (0, 1] as any
    point you might want to call it will have another point between it and 0.

    Note, I said between the point your THINK is the first, there is no such
    point, and thus you are agreeing to that fact.

    You can only have a first point in the open interval if the interval has
    only a finite number of points, but it has an infinite number of points,
    so there is no space for a first.

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  • From WM@21:1/5 to Richard Damon on Fri Sep 13 17:45:09 2024
    On 12.09.2024 20:20, Richard Damon wrote:

    If you think there is some n that exist that doesn't have an n+1 that
    exist, then your idea of the Natural Number system is

    much more advanced than you can understand.

    Regards, WM

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  • From Richard Damon@21:1/5 to All on Fri Sep 13 11:54:25 2024
    On 9/13/24 11:43 AM, WM wrote:
    On 12.09.2024 20:16, Richard Damon wrote:
    On 9/12/24 1:44 PM, WM wrote:

    Therefore the end of an open interval consist of points.

    The "end" of the open interval isn't in the interval, that is why it
    is called "open".

    The end of the interval is a point of the interval. It is called open
    because next to a definable point there are always dark points.

    There is no "first" point of that interval, just an infinite set of
    points

    Yes, dark points.

    Nope, fulli=y visable,

    Only "dark" to you because you refuse to look.


    approaching that point.

    Points do not approach. They are fixed.

    Regards, WM


    Right, the points don't move, they just all exist and when we step from
    point to point we keep getting closer so no point was the end.

    You don't seem to be able to parse the basic English.

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  • From Richard Damon@21:1/5 to All on Fri Sep 13 11:55:23 2024
    On 9/13/24 11:45 AM, WM wrote:
    On 12.09.2024 20:20, Richard Damon wrote:

    If you think there is some n that exist that doesn't have an n+1 that
    exist, then your idea of the Natural Number system is

    much more advanced than you can understand.

    Regards, WM


    Nope, just wrong, as you fail to have the basic properties because you
    can't understand them.

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  • From WM@21:1/5 to joes on Fri Sep 13 18:16:51 2024
    On 13.09.2024 08:40, joes wrote:

    The "end" of an interval is a number such that no element is larger/
    smaller, defined as the limit, which may or may not be included.

    No, the end is a point, in case of open intervals a dark point. There is
    no gap on the real axis. All is full of points.

    Regards, WM


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  • From WM@21:1/5 to Jim Burns on Fri Sep 13 18:23:01 2024
    On 12.09.2024 21:12, Jim Burns wrote:
    On 9/12/2024 7:39 AM, WM wrote:


    ⎛ Expecting infinity to be unsurprising
    ⎜ is like
    ⎜ traveling to Outer Mongolia and
    ⎝ expecting everyone there to speak perfect German.

    Expecting infinity to obey logic is justified.

    Infinity is foreign.
    Foreign isn't uninvestigatable,

    I investigate it. I am sure that at every finite step Bob remains. And
    there are no other steps, even if there are infinitely many.
    Nevertheless (0,1] has a smallest point.
    It is dark.
    Where no point is, there is no interval.
    Interval-ends without points are matheology.

    "Obvious" has devolved into gibberish.

    The real axis has no gaps, not even a single one at the end of (0, 1]
    after zero.

    Regards, WM

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  • From Richard Damon@21:1/5 to All on Fri Sep 13 13:12:24 2024
    On 9/13/24 12:16 PM, WM wrote:
    On 13.09.2024 08:40, joes wrote:

    The "end" of an interval is a number such that no element is larger/
    smaller, defined as the limit, which may or may not be included.

    No, the end is a point, in case of open intervals a dark point. There is
    no gap on the real axis. All is full of points.

    Regards, WM



    So you think, but can't show, because you are just wrong.

    Just past the end is a point, (the boundry of the open interval) and
    there is no such thing as two consecutive points in a dense system, so
    there CAN'T be a point at the end of the open interval.

    The problem is you don't understand the meaning of there is no "gap" on
    the number line. It doesn't mean that points are next to each other,
    because each has some width to take the space between the two different
    points, but that between any two distinct points is a cloud of more
    points filling the space, all distinct and all unique, but not finitely countable.

    Thus, we have no points are adjacent, as between them is always more points.

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  • From WM@21:1/5 to Jim Burns on Fri Sep 13 19:20:25 2024
    On 12.09.2024 22:54, Jim Burns wrote:
    On 9/12/2024 1:48 PM, WM wrote:
    On 12.09.2024 14:29, FromTheRafters wrote:
    After serious thinking WM wrote :

    But the endpoints of open intervals
    will remain dark forever.

    Open intervals simply don't contain endpoints,
    dark or otherwise.

    You simply don't know about them.

    The boundary ∂A of set A is

    not a result of understanding points.

    Fact is that the real axis is nothing but its points. There is no gap.
    Every point has a next point but next to defined points are dark points.
    Next to every defined points there are ℵo dark points. This
    configuration cannot be changed.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Moebius on Fri Sep 13 19:16:37 2024
    On 12.09.2024 23:40, Moebius wrote:
    Am 12.09.2024 um 22:36 schrieb Chris M. Thomasson:
    On 9/2/2024 10:07 AM, WM wrote:

    How many different unit fractions are lessorequal than all unit
    fractions?

    [The correct] answer is that one unit fraction is lessorequal than all
    unit fractions. [...]

    [In math] there is only the one correct answer given above.

    Indeed,

    Mathematical proof: NUF grows from 0 to more. At no point it can grow by
    more than 1.

    Regards, WM

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  • From Richard Damon@21:1/5 to All on Fri Sep 13 13:32:44 2024
    On 9/13/24 1:16 PM, WM wrote:
    On 12.09.2024 23:40, Moebius wrote:
    Am 12.09.2024 um 22:36 schrieb Chris M. Thomasson:
    On 9/2/2024 10:07 AM, WM wrote:

    How many different unit fractions are lessorequal than all unit
    fractions?

    [The correct] answer is that one unit fraction is lessorequal than
    all unit fractions. [...]

    [In math] there is only the one correct answer given above.

    Indeed,

    Mathematical proof: NUF grows from 0 to more. At no point it can grow by
    more than 1.

    Regards, WM


    And at no point can it grow by ONE, so it doesn't actually exist.

    For every finite x, there are Aleph_0 unit fractions below it, and
    Aleph_0 doesn't "grow" when you try to add 1 to it.

    Also, there is no finite point where NUF(x) can grow from 0 to 1, as any
    such x, as more than 1 unit fraction below it.

    Thus, what we can prove is that NUF(x) can not actually be defined as a
    finite function of finite values.

    Sorry, you are just proving that you brain exploded into smithereens
    from the inconsistencies of your logic when you try to deal with systems
    with infinities in them.

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  • From Richard Damon@21:1/5 to All on Fri Sep 13 13:27:26 2024
    On 9/13/24 12:23 PM, WM wrote:
    On 12.09.2024 21:12, Jim Burns wrote:
    On 9/12/2024 7:39 AM, WM wrote:


    ⎛ Expecting infinity to be unsurprising
    ⎜ is like
    ⎜ traveling to Outer Mongolia and
    ⎝ expecting everyone there to speak perfect German.

    Expecting infinity to obey logic is justified.

    Infinity is foreign.
    Foreign isn't uninvestigatable,

    I investigate it. I am sure that at every finite step Bob remains. And
    there are no other steps, even if there are infinitely many.
    Nevertheless (0,1] has a smallest point.
    It is dark.
    Where no point is, there is no interval.
    Interval-ends without points are matheology.

    "Obvious" has devolved into gibberish.

    The real axis has no gaps, not even a single one at the end of (0, 1]
    after zero.

    Regards, WM



    Right, because between any to points (which have no width) is an
    infinite number of other points to fill that gap.

    You just confuse the diffference in effect of "No Gap" between a finite
    system where points have a finite size, and infinite systems where
    points have no finite width, and thus are packed infinitely tight to
    each other, and thus aren't "next to" each other.

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  • From Richard Damon@21:1/5 to All on Fri Sep 13 13:35:38 2024
    On 9/13/24 1:20 PM, WM wrote:
    On 12.09.2024 22:54, Jim Burns wrote:
    On 9/12/2024 1:48 PM, WM wrote:
    On 12.09.2024 14:29, FromTheRafters wrote:
    After serious thinking WM wrote :

    But the endpoints of open intervals
    will remain dark forever.

    Open intervals simply don't contain endpoints,
    dark or otherwise.

    You simply don't know about them.

    The boundary ∂A of set A is

    not a result of understanding points.

    Fact is that the real axis is nothing but its points. There is no gap.
    Every point has a next point but next to defined points are dark points.
    Next to every defined points there are ℵo dark points. This
    configuration cannot be changed.

    Regards, WM


    Nope, nothing says "next to", and your idea of "dark numbers" is just undefined, because it is nothing but the inability of your logic to
    handle the things beyond it.

    Sorry, you are just admitting that you are too ignorant to actually work
    in the system you are trying to.

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  • From WM@21:1/5 to Richard Damon on Fri Sep 13 20:05:59 2024
    On 13.09.2024 17:52, Richard Damon wrote:
    On 9/13/24 11:41 AM, WM wrote:

    Between [0, 1] and (0, 1] there is nothing, there is not a spot or
    point of the interval.

    But that doesn't mean there is a lowest most point in (0, 1] as any
    point you might want to call it will have another point between  it and 0.

    I will not call any point but consider all points. There is no point
    smaller than all points in the open interval but a smallest one. Only 0
    is smaller than all.

    Note, I said between the point your THINK is the first, there is no such point, and thus you are agreeing to that fact.

    You can only have a first point in the open interval if the interval has
    only a finite number of points,

    No, that is your big mistake. In the interval [0, 1] there is a point
    next to 0 and a point next to 1, and infinitely many are beteen them.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Fri Sep 13 20:12:00 2024
    On 13.09.2024 19:12, Richard Damon wrote:

    there is no such thing as two consecutive points in a dense system

    There are consecutive points constituting the real line. But most are dark.
    Thus, we have no points are adjacent, as between them is always more
    points.

    Yes, dark points some of which can become visible. How else could you
    find more than you see initially?

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Fri Sep 13 20:07:56 2024
    On 13.09.2024 17:54, Richard Damon wrote:
    On 9/13/24 11:43 AM, WM wrote:

    Points do not approach. They are fixed.

    Right, the points don't move, they just all exist

    including one which is the smallest.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Fri Sep 13 20:13:29 2024
    On 13.09.2024 19:27, Richard Damon wrote:

    between any to points (which have no width) is an
    infinite number of other points to fill that gap.

    Yes, they are dark until you define them.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Fri Sep 13 20:14:46 2024
    On 13.09.2024 19:32, Richard Damon wrote:
    On 9/13/24 1:16 PM, WM wrote:
    On 12.09.2024 23:40, Moebius wrote:
    Am 12.09.2024 um 22:36 schrieb Chris M. Thomasson:
    On 9/2/2024 10:07 AM, WM wrote:

    How many different unit fractions are lessorequal than all unit
    fractions?

    [The correct] answer is that one unit fraction is lessorequal than
    all unit fractions. [...]

    [In math] there is only the one correct answer given above.

    Indeed,

    Mathematical proof: NUF grows from 0 to more. At no point it can grow
    by more than 1.

    And at no point can it grow by ONE

    It must.

    so it doesn't actually exist.

    There is no question for mathematicians that NUF does exist.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From Jim Burns@21:1/5 to All on Fri Sep 13 15:07:09 2024
    On 9/13/2024 11:43 AM, WM wrote:
    On 12.09.2024 20:16, Richard Damon wrote:
    On 9/12/24 1:44 PM, WM wrote:

    Therefore the end of an open interval consist of points.

    The "end" of the open interval isn't in the interval,
    that is why it is called "open".

    The end of the interval is a point of the interval.
    It is called open because next to a definable point
    there are always dark points.

    An open set holds none of its boundary.
    A closed set holds all of its boundary.

    If intervals holding endpoints are open,
    then single.point interval.intersections are open
    and arbitrary unions of single.point.sets are open
    and all point.sets are open.

    "All point.sets open" is the devolution of
    "Obviously, Bob cannot disappear".

    We are finite.
    Infinity is foreign.

    There is no "first" point of that interval,
    just an infinite set of points

    Yes, dark points.

    Points in ℝ[ℚ[ℤ[ℕ[⟨0,…,n⟩]]]] have no
    🛇 first in (0,1]

    Points in ℝ[ℚ[ℤ[ℕ[⟨0,…,n⟩]]]] have no
    🛇 positive lower bound of {⅟n: n ∈ ℕ[⟨1,…,n⟩]}

    ⎛ r′ ∈ ℝ[ℚ[ℤ[ℕ[⟨0,…,n⟩]]]] locates
    ⎜ the open.split S′ ⊆ ℚ[ℤ[ℕ[⟨0,…,n⟩]]]
    ⎜ {} ≠ S′ ᵉᵃᶜʰ< r′ ≤ᵉᵃᶜʰ (ℚ[ℤ[ℕ[⟨0,…,n⟩]]] \ S′) ≠ {}

    ⎜ q′ ∈ ℚ[ℤ[ℕ[⟨0,…,n⟩]]] is the quotient z′/z"
    ⎜ z′,z" ∈ ℤ[ℕ[⟨0,…,n⟩]] and z"≠0

    ⎜ z′ ∈ ℤ[ℕ[⟨0,…,n⟩]] is the difference n′-n"
    ⎜ n′,n" ∈ ℕ[⟨0,…,n⟩]

    ⎜ n′ ∈ ℕ[⟨0,…,n⟩] ends FISON ⟨0,…,n′⟩

    ⎜ ⟨0,…,n′⟩ is well.ordered (minimummed non.empties)
    ⎜ for k ∈ ⟨1,…,n′⟩: ⟨0,…,n′-1⟩ ∋ k-1
    ⎝ for j ∈ ⟨0,…,n′⟩: ⟨1,…,n′+1⟩ ∋ j+1

    just an infinite set
    of points approaching that point.

    Points do not approach. They are fixed.

    Sets approach. Sets aren't points.

    ⎛ Assume
    ⎜ ∃δ: 0 < δ ≤ᵉᵃᶜʰ ⅟ℕ[⟨1,…,n⟩]

    ⎜ β = glb.⅟ℕ[⟨1,…,n⟩]
    ⎜ α < β ⇒ α ≤ᵉᵃᶜʰ ⅟ℕ[⟨1,…,n⟩]
    ⎜ γ > β ⇒ ¬(γ ≤ᵉᵃᶜʰ ⅟ℕ[⟨1,…,n⟩])
    ⎜ γ > β ⇒ γ >ₑₓᵢₛₜₛ ⅟ℕ[⟨1,…,n⟩]

    ⎜ 2⋅β > β
    ⎜ 2⋅β >ₑₓᵢₛₜₛ ⅟ℕ[⟨1,…,n⟩]
    ⎜ 2⋅β > ⅟k ∈ ⅟ℕ[⟨1,…,n⟩]
    ⎜ ½⋅β > ¼⋅⅟k ∈ ⅟ℕ[⟨1,…,n⟩] [!]
    ⎜ ½⋅β >ₑₓᵢₛₜₛ ⅟ℕ[⟨1,…,n⟩]
    ⎜ ¬(½⋅β ≤ᵉᵃᶜʰ ⅟ℕ[⟨1,…,n⟩])

    ⎜ However,
    ⎜ ½⋅β < β
    ⎜ ½⋅β ≤ᵉᵃᶜʰ ⅟ℕ[⟨1,…,n⟩]
    ⎝ Contradiction.

    ¬∃δ: 0 < δ ≤ᵉᵃᶜʰ ⅟ℕ[⟨1,…,n⟩]
    Nothing exists between 0 and ⅟ℕ[⟨1,…,n⟩]
    ⅟ℕ[⟨1,…,n⟩] approaches 0.

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  • From WM@21:1/5 to Jim Burns on Fri Sep 13 21:27:24 2024
    On 13.09.2024 21:07, Jim Burns wrote:
    On 9/13/2024 11:43 AM, WM wrote:

    An open set holds none of its boundary.
    A closed set holds all of its boundary.

    If intervals holding endpoints are open,
    then single.point interval.intersections are open
    and arbitrary unions of single.point.sets are open
    and all point.sets are open.

    Sets with definable endpoints are closed, sets with dark endpoints are open.

    "All point.sets open" is the devolution

    You have not yet understood. Read what I wrote above.

    of
    "Obviously, Bob cannot disappear".

    According to logic Bob cannot disappear in a finite step. There are no
    other steps even in the infinite sequence.

    There is no "first" point of that interval,
    just an infinite set of points

    Yes, dark points.

    Points in ℝ[ℚ[ℤ[ℕ[⟨0,…,n⟩]]]] have no
    🛇 first in (0,1]

    They have but we cannot see them, but we can prove their existence.

    Regards, WM

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  • From joes@21:1/5 to All on Fri Sep 13 19:20:24 2024
    Am Thu, 12 Sep 2024 19:54:38 +0200 schrieb WM:
    On 12.09.2024 14:35, Richard Damon wrote:
    On 9/12/24 7:18 AM, WM wrote:
    Le 12/09/2024 à 03:00, Richard Damon a écrit :

    So, you can't "index" an unbounded set of unit fractions from 0, as
    there isn't a "first" unit fraction from that end.
    We can "address" those unit fractions with the value, but we can not
    "index" them from 0, only from 1/1.
    If you can index all unit fractions, then you can index them from
    every side.
    Nope, that ASSUMPTION just means you can't actually have an infinite
    set, as you can't get to the upper end to let you count down.
    Wrong. Dark numbers prevent counting to the end. Dark numbers establish
    the existence of a set where no end can be seen. That is the only way to
    make infinity and completeness compatible.
    1/n - 1/(n+1) > 0 thus says that no 1/n is the smallest, as there will
    exist a 1/(n+1) that is smaller that that.
    That is not a proof of existence. The formula says: If n and n+1 exist,
    then they differ.
    When do they exist?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From Richard Damon@21:1/5 to All on Fri Sep 13 16:52:34 2024
    On 9/13/24 2:05 PM, WM wrote:
    On 13.09.2024 17:52, Richard Damon wrote:
    On 9/13/24 11:41 AM, WM wrote:

    Between [0, 1] and (0, 1] there is nothing, there is not a spot or
    point of the interval.

    But that doesn't mean there is a lowest most point in (0, 1] as any
    point you might want to call it will have another point between  it
    and 0.

    I will not call any point but consider all points. There is no point
    smaller than all points in the open interval but a smallest one. Only 0
    is smaller than all.

    Nope, you just don't understand how infinte sets work, because you mind
    just can't handle it.

    What ever value the "smallest" point has, call it x, there MUST be a
    smaller point at x/2, so there is not smallest.

    Not till you can find a positive value such that x < x/2.

    Sorry.


    Note, I said between the point your THINK is the first, there is no
    such point, and thus you are agreeing to that fact.

    You can only have a first point in the open interval if the interval
    has only a finite number of points,

    No, that is your big mistake. In the interval [0, 1] there is a point
    next to 0 and a point next to 1, and infinitely many are beteen them.

    Regards, WM


    How? What value could it have? If it is x, what about the fact that x/2
    will be between it an 0.

    You are just proving that you logic have exploded your brains to
    smithereens due to its inconsistency.

    You are just proving your logic can't handle what you are talking about
    because it just is totally inconsistant.

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  • From Richard Damon@21:1/5 to All on Fri Sep 13 16:53:31 2024
    On 9/13/24 2:07 PM, WM wrote:
    On 13.09.2024 17:54, Richard Damon wrote:
    On 9/13/24 11:43 AM, WM wrote:

    Points do not approach. They are fixed.

    Right, the points don't move, they just all exist

    including one which is the smallest.

    Regards, WM


    Then what is it?

    How is the smalest point x less than the point x/2?

    Sorry, you are just proving you logic has scrambled your brain.

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  • From Richard Damon@21:1/5 to All on Fri Sep 13 17:00:10 2024
    On 9/13/24 2:13 PM, WM wrote:
    On 13.09.2024 19:27, Richard Damon wrote:

    between any to points (which have no width) is an infinite number of
    other points to fill that gap.

    Yes, they are dark until you define them.

    Regards, WM

    But we can start with a simple constructive definition of ALL that
    rational numbers, so they have all BEEN "defined", so none of them can
    be dark.


    Sorry, you logic has just exploded your brain with its inconsistacy.

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  • From Richard Damon@21:1/5 to All on Fri Sep 13 16:58:31 2024
    On 9/13/24 2:12 PM, WM wrote:
    On 13.09.2024 19:12, Richard Damon wrote:

    there is no such thing as two consecutive points in a dense system

    There are consecutive points constituting the real line. But most are dark.

    Nope. Becuase your dark points don't actually exist individually, but
    there can only be 1 that is the smallest, so the end point can;t be dark
    and you logic goes up in the great big bang of inconsistance.


    Thus, we have no points are adjacent, as between them is always more
    points.

    Yes, dark points some of which can become visible. How else could you
    find more than you see initially?

    How can a point change "visibility"? Either it was there all along, or
    it wasn't.

    You still have the problem that what ever first dark point you want to
    try to imagine still had another "dark" point between it and 0, so it
    never was the first, so you statement was judst a lie.

    Your whole logic just blows itself up in inconsistancy.


    Regards, WM



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  • From Richard Damon@21:1/5 to All on Fri Sep 13 17:02:36 2024
    On 9/13/24 2:14 PM, WM wrote:
    On 13.09.2024 19:32, Richard Damon wrote:
    On 9/13/24 1:16 PM, WM wrote:
    On 12.09.2024 23:40, Moebius wrote:
    Am 12.09.2024 um 22:36 schrieb Chris M. Thomasson:
    On 9/2/2024 10:07 AM, WM wrote:

    How many different unit fractions are lessorequal than all unit
    fractions?

    [The correct] answer is that one unit fraction is lessorequal than >>>>>> all unit fractions. [...]

    [In math] there is only the one correct answer given above.

    Indeed,

    Mathematical proof: NUF grows from 0 to more. At no point it can grow
    by more than 1.

    And at no point can it grow by ONE

    It must.

    Only in your broken exploded logic system.


    so it doesn't actually exist.

    There is no question for mathematicians that NUF does exist.

    Right, no question, because it can be proved that it DOESN'T exist as a
    finite valued function on a finite valued domain.

    It only exists in your exploded brain based on logic that exploded
    itself to smithereens due to its inconsistancy.


    Regards, WM

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  • From Jim Burns@21:1/5 to All on Fri Sep 13 17:13:39 2024
    On 9/13/2024 1:20 PM, WM wrote:
    On 12.09.2024 22:54, Jim Burns wrote:
    On 9/12/2024 1:48 PM, WM wrote:
    On 12.09.2024 14:29, FromTheRafters wrote:
    After serious thinking WM wrote :

    But the endpoints of open intervals
    will remain dark forever.

    Open intervals simply don't contain endpoints,
    dark or otherwise.

    You simply don't know about them.

    The boundary ∂A of set A is

    not a result of understanding points.

    If you decide ∂ᵂᴹA ≠ ∂A then
    whatever you say about ∂ᵂᴹA is not about ∂A

    Fact is that the real axis is nothing but its points.

    Yes.
    ℝ[ℚ[ℤ[ℕ[⟨0,…,n⟩]]]] holds
    points.between ratios of countable.to numbers.

    for countable.to n′
    ⟨0,…,n′⟩ subsets are minimummed or empty.
    k ∈ ⟨1,…,n′⟩ ⇒ ⟨0,…,n′-1⟩ ∋ j: j+1 = k
    j ∈ ⟨0,…,n′⟩ ⇒ ⟨1,…,n′+1⟩ ∋ k: k = j+1

    There is no gap.

    Yes.
    For each split S of ℝ[ℚ[ℤ[ℕ[⟨0,…,n⟩]]]]
    x is between S and (ℝ[ℚ[ℤ[ℕ[⟨0,…,n⟩]]]] \ S)

    Every point has a next point but
    next to defined points are dark points.

    No.
    Next.to.defined points are not.in ℝ[ℚ[ℤ[ℕ[⟨0,…,n⟩]]]]

    Next to every defined points there are ℵo dark points.
    This configuration cannot be changed.

    Whatever it is you are talking about,
    we are talking about ℝ[ℚ[ℤ[ℕ[⟨0,…,n⟩]]]]

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  • From WM@21:1/5 to FromTheRafters on Sat Sep 14 16:01:02 2024
    On 14.09.2024 01:05, FromTheRafters wrote:
    WM explained :

    No, that is your big mistake. In the interval [0, 1] there is a point
    next to 0 and a point next to 1, and infinitely many are beteen them.

    Define 'next' in this context.

    Two points are next to each other means that no point is between them.

    Regards, WM

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  • From WM@21:1/5 to Jim Burns on Sat Sep 14 18:24:21 2024
    On 13.09.2024 23:13, Jim Burns wrote:
    On 9/13/2024 1:20 PM, WM wrote:

    Fact is that the real axis is nothing but its points.

    Yes.
    ℝ[ℚ[ℤ[ℕ[⟨0,…,n⟩]]]] holds
    points.between ratios of countable.to numbers.

    There is no gap.

    Yes.

    Every point has a next point but
    next to defined points are dark points.

    No.
    Next.to.defined points are not.in ℝ[ℚ[ℤ[ℕ[⟨0,…,n⟩]]]]

    Not in what you know about these sets, but existing, because:
    WM: There is no gap.
    JB: Yes

    Next to every defined points there are ℵo dark points.
    This configuration cannot be changed.

    Whatever it is you are talking about,
    we are talking about ℝ[ℚ[ℤ[ℕ[⟨0,…,n⟩]]]]

    That's not enough.

    Regards, WM

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  • From Richard Damon@21:1/5 to All on Sat Sep 14 12:33:19 2024
    On 9/14/24 10:01 AM, WM wrote:
    On 14.09.2024 01:05, FromTheRafters wrote:
    WM explained :

    No, that is your big mistake. In the interval [0, 1] there is a point
    next to 0 and a point next to 1, and infinitely many are beteen them.

    Define 'next' in this context.

    Two points are next to each other means that no point is between them.

    Regards, WM


    And, since for ANY two points on the real number line, x, and y, the
    point (x+y)/2 is another real point between them, there are absolutely
    NO points on the real line next to each other.

    Sorry, you are just making logic based on assumptions of false statements.

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  • From Jim Burns@21:1/5 to All on Sat Sep 14 14:52:00 2024
    On 9/14/2024 12:24 PM, WM wrote:
    On 13.09.2024 23:13, Jim Burns wrote:
    On 9/13/2024 1:20 PM, WM wrote:

    Fact is that
    the real axis is nothing but its points.

    Yes.
    ℝ[ℚ[ℤ[ℕ[⟨0,…,n⟩]]]] holds
    points.between ratios of countable.to numbers.

    There is no gap.

    Yes.

    Every point has a next point but
    next to defined points are dark points.

    No.
    Next.to.defined points are not.in
    ℝ[ℚ[ℤ[ℕ[⟨0,…,n⟩]]]]

    Not in what you know about these sets,
    but existing,
    because:
    ⎛ WM: There is no gap.
    ⎝ JB: Yes

    ⎛ WM: Two points are next to each other
    ⎜ means that
    ⎝ no point is between them.

    ℝ[ℚ[ℤ[ℕ[⟨0,…,n⟩]]]] includes ℚ[ℤ[ℕ[⟨0,…,n⟩]]]

    No positive distance r > 0 exists such that
    an r.length gap exists in ℚ[ℤ[ℕ[⟨0,…,n⟩]]] where
    there aren't any q′ ∈ ℚ[ℤ[ℕ[⟨0,…,n⟩]]]
    ⎛ ¬∃r ∈ ℝ[ℚ[ℤ[ℕ[⟨0,…,n⟩]]]]: 0 < r ∧
    ⎜ ∃q,q″ ∈ ℚ[ℤ[ℕ[⟨0,…,n⟩]]]: q+r ≤ q″ ∧
    ⎝ ¬∃q′ ∈ ℚ[ℤ[ℕ[⟨0,…,n⟩]]]: q < q′ < q″

    Two points are a distance r > 0 apart.
    There is no rational.free gap between them.
    There are rationals between them.
    The two points are not next to each other.

    There are no two points next to each other in
    ℝ[ℚ[ℤ[ℕ[⟨0,…,n⟩]]]]

    Next to every defined points
    there are ℵo dark points.
    This configuration cannot be changed.

    Whatever it is you are talking about,
    we are talking about ℝ[ℚ[ℤ[ℕ[⟨0,…,n⟩]]]]

    That's not enough.

    There aren't any more,
    not if we are discussing a line which
    includes all rational points and
    includes enough points more such that
    functions continuous at each point
    don't skip.over anywhere.

    That's enough points for physics and
    many other "common sense" purposes.

    However, although each ⟨0,…,n⟩ is finite,
    ℕ[⟨0,…,n⟩], ℤ[ℕ[⟨0,…,n⟩]], ℚ[ℤ[ℕ[⟨0,…,n⟩]]],
    and ℝ[ℚ[ℤ[ℕ[⟨0,…,n⟩]]]] are infinite.

    Describing ℕ[⟨0,…,n⟩], ℤ[ℕ[⟨0,…,n⟩]], ℚ[ℤ[ℕ[⟨0,…,n⟩]]], and ℝ[ℚ[ℤ[ℕ[⟨0,…,n⟩]]]]
    as finite,
    for example, as their having
    each nonempty.subset two.ended,
    leads to gibberish and
    is an incorrect description.

    Note, too, that
    adding more points can't make them finite.

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  • From joes@21:1/5 to All on Sat Sep 14 18:35:16 2024
    Am Sat, 14 Sep 2024 16:01:02 +0200 schrieb WM:
    On 14.09.2024 01:05, FromTheRafters wrote:
    WM explained :

    No, that is your big mistake. In the interval [0, 1] there is a point
    next to 0 and a point next to 1, and infinitely many are beteen them.
    Define 'next' in this context.
    Two points are next to each other means that no point is between them.
    Which is the case for no two (different) reals.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From Moebius@21:1/5 to All on Sun Sep 15 02:07:51 2024
    Am 15.09.2024 um 01:54 schrieb Chris M. Thomasson:
    On 9/14/2024 10:30 AM, FromTheRafters wrote:
    WM presented the following explanation :
    On 14.09.2024 01:05, FromTheRafters wrote:
    WM explained :

    No, that is your big mistake. In the interval [0, 1] there is a
    point next to 0 and a point next to 1, and infinitely many are
    beteen them.

    Define 'next [to]' in this context.

    Two points are next to each other means that no point is between them.

    So which point is next to zero. Is it rational, or is it irrational?
    In either case it is greater than zero and there is again more room
    for an even closer number.

    If r e IR, r > 0, then 0 < r/2 < r.

    Hence there is no real number > 0 "next to 0".

    WM says .00001 is next to zero... Ahhh shit, what about .000001?

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  • From Moebius@21:1/5 to All on Sun Sep 15 02:15:13 2024
    Am 15.09.2024 um 02:05 schrieb Chris M. Thomasson:
    On 9/14/2024 11:35 AM, joes wrote:
    Am Sat, 14 Sep 2024 16:01:02 +0200 schrieb WM:
    On 14.09.2024 01:05, FromTheRafters wrote:
    WM explained :

    No, that is your big mistake. In the interval [0, 1] there is a point >>>>> next to 0 and a point next to 1, and infinitely many are beteen them. >>>> Define 'next' in this context.
    Two points are next to each other means that no point is between them.
    Which is the case for no two (different) reals.

    Two points on the real line that are different from one another have infinite***ly manY*** points between them.

    Indeed: If r,s e IR and, say, r < s, then r < (r + s)/2 < s.

    But then r < (r + s)/2 < ((r + s)/2 + s)/2 < s, and so on (ad infinitum).

    Two points that are not different are the same point... ;^D

    Indeed (at least in a classical context):
    Ax,y e IR: ~(x =/= y) -> x = y. :-)

    Proof: "x =/= y" is just short for "~(x = y)". Hence ~(x =/= y) just
    means ~~(x = y). And with /~~elimination/, we get x = y.

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  • From Moebius@21:1/5 to All on Sun Sep 15 04:23:53 2024
    Am 15.09.2024 um 02:18 schrieb Chris M. Thomasson:
    On 9/14/2024 5:07 PM, Moebius wrote:
    Am 15.09.2024 um 01:54 schrieb Chris M. Thomasson:
    On 9/14/2024 10:30 AM, FromTheRafters wrote:
    WM presented the following explanation :
    On 14.09.2024 01:05, FromTheRafters wrote:
    WM explained :

    No, that is your big mistake. In the interval [0, 1] there is a
    point next to 0 and a point next to 1, and infinitely many are
    beteen them.

    Define 'next [to]' in this context.

    Two points are next to each other means that no point is between them. >>>>
    So which point is next to zero. Is it rational, or is it irrational?
    In either case it is greater than zero and there is again more room
    for an even closer number.

    If r e IR, r > 0, then 0 < r/2 < r.

    Hence there is no real number > 0 "next to 0".

    WM says .00001 is next to zero... Ahhh shit, what about .000001?

    .(0)1 is close to zero? ;^D

    Close, but no cigar.

    After all, 0.(0)01 is closer. :-P

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  • From Ben Bacarisse@21:1/5 to Chris M. Thomasson on Sun Sep 15 17:38:55 2024
    "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> writes:

    On 9/14/2024 11:35 AM, joes wrote:
    Am Sat, 14 Sep 2024 16:01:02 +0200 schrieb WM:
    On 14.09.2024 01:05, FromTheRafters wrote:
    WM explained :

    No, that is your big mistake. In the interval [0, 1] there is a point >>>>> next to 0 and a point next to 1, and infinitely many are beteen them. >>>> Define 'next' in this context.
    Two points are next to each other means that no point is between them.
    Which is the case for no two (different) reals.

    Two points on the real line that are different from one another have
    infinite points between them, and so on and so forth. :^)

    It might be worth pointing out that any non-trivial interval [a, b] on
    the real line (i.e. with b > a) contains an uncountable number of
    points. Constructing the mid point and the quarter points and so on
    only shows a countably infinite number of internal points, but giving a bijection between [a, b] and [0, 1] shows that they have the same
    cardinality.

    --
    Ben.

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  • From WM@21:1/5 to Ben Bacarisse on Sun Sep 15 21:39:46 2024
    On 15.09.2024 18:38, Ben Bacarisse wrote:

    It might be worth pointing out that any non-trivial interval [a, b] on
    the real line (i.e. with b > a) contains an uncountable number of
    points.

    That proves that small intervals cannot be defined (they are dark). An uncountable number cannot be completed without a finite entry.

    Regards, WM

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  • From WM@21:1/5 to joes on Sun Sep 15 21:47:16 2024
    On 14.09.2024 20:35, joes wrote:
    Am Sat, 14 Sep 2024 16:01:02 +0200 schrieb WM:

    Two points are next to each other means that no point is between them.
    Which is the case for no two (different) reals.

    For no two different visible numbers, to be precise. Next to a visible
    number there is a dark number or a gap, i.e., nothing. I don't believe
    in gaps on the real line.

    Regards, WM

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  • From WM@21:1/5 to FromTheRafters on Sun Sep 15 21:44:45 2024
    On 14.09.2024 19:30, FromTheRafters wrote:
    WM presented the following explanation :

    Two points are next to each other means that no point is between them.

    So which point is next to zero. Is it rational, or is it irrational?

    That is unknown and will remain so forever because the point is dark
    with no chance to get visible. There is a good chance however, that it
    is irrational because there are many more irrational points than
    rational points.

    In
    either case it is greater than zero and there is again more room for an
    even closer number.

    Dark numbers have no discernible order.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Sun Sep 15 21:52:30 2024
    On 14.09.2024 18:33, Richard Damon wrote:
    On 9/14/24 10:01 AM, WM wrote:

    Two points are next to each other means that no point is between them.

    And, since for ANY two points on the real number line, x, and y, the
    point (x+y)/2 is another real point between them,

    Why don't you start with (x+y)/2? Or better with the end of the
    sequence? In actual infinity you could.

    there are absolutely
    NO points on the real line next to each other.

    No definable points, to be precise. If there is no point next to 0 then
    there is a gap. I do not accept gaps on the real line.

    Regards, WM

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  • From joes@21:1/5 to All on Sun Sep 15 21:07:41 2024
    Am Sun, 15 Sep 2024 21:52:30 +0200 schrieb WM:
    On 14.09.2024 18:33, Richard Damon wrote:
    On 9/14/24 10:01 AM, WM wrote:

    Two points are next to each other means that no point is between them.
    And, since for ANY two points on the real number line, x, and y, the
    point (x+y)/2 is another real point between them,
    Why don't you start with (x+y)/2? Or better with the end of the
    sequence? In actual infinity you could.
    Sure, inbetween (x+y)/2 and x is (3x+y)/4. There is no end.

    there are absolutely NO points on the real line next to each other.
    No definable points, to be precise. If there is no point next to 0 then
    there is a gap. I do not accept gaps on the real line.
    I.e. „neighbouring” points can’t be defined. There are no gaps.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to All on Sun Sep 15 21:09:15 2024
    Am Sun, 15 Sep 2024 21:39:46 +0200 schrieb WM:
    On 15.09.2024 18:38, Ben Bacarisse wrote:

    It might be worth pointing out that any non-trivial interval [a, b] on
    the real line (i.e. with b > a) contains an uncountable number of
    points.
    That proves that small intervals cannot be defined (they are dark). An uncountable number cannot be completed without a finite entry.
    Why do you believe there must be a total order?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From Richard Damon@21:1/5 to All on Sun Sep 15 21:14:30 2024
    On 9/15/24 3:52 PM, WM wrote:
    On 14.09.2024 18:33, Richard Damon wrote:
    On 9/14/24 10:01 AM, WM wrote:

    Two points are next to each other means that no point is between them.

    And, since for ANY two points on the real number line, x, and y, the
    point (x+y)/2 is another real point between them,

    Why don't you start with (x+y)/2? Or better with the end of the
    sequence? In actual infinity you could.

    Because there isn't an end.

    That is the point, where every you try to start, there is a point closer.


    there are absolutely NO points on the real line next to each other.

    No definable points, to be precise. If there is no point next to 0 then
    there is a gap. I do not accept gaps on the real line.

    NO POINTS.

    Nope, there are just more points between, no gaps.

    You are just too stupid to understand that two zero-sided objects can
    not net "next-to" each other and still distinct.

    Your problem is your brain got exploded by using inconsistent logic, as
    the properties of the infinite are not "just like" the properties of the finite, even if you want them to be.


    Regards, WM


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  • From Richard Damon@21:1/5 to All on Sun Sep 15 21:16:39 2024
    On 9/15/24 3:39 PM, WM wrote:
    On 15.09.2024 18:38, Ben Bacarisse wrote:

    It might be worth pointing out that any non-trivial interval [a, b] on
    the real line (i.e. with b > a) contains an uncountable number of
    points.

    That proves that small intervals cannot be defined (they are dark). An uncountable number cannot be completed without a finite entry.

    Regards, WM

    But arbirary small intevals CAN be defined.

    Try to name one that can't.

    The only things that are dark, are the things that do not actually
    exist, but your logic (which has blown up your mind) thinks must exist.

    --- SoupGate-Win32 v1.05
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  • From Jim Burns@21:1/5 to All on Mon Sep 16 13:30:40 2024
    On 9/15/2024 3:47 PM, WM wrote:
    On 14.09.2024 20:35, joes wrote:
    Am Sat, 14 Sep 2024 16:01:02 +0200 schrieb WM:

    Two points are next to each other
    means that
    no point is between them.

    Which is the case for no two (different) reals.

    For no two different visible numbers,
    to be precise.

    ⎛ WM: Two points are next to each other
    ⎜ means that
    ⎝ no point is between them.

    For two different
    numbers.situating.splits of rationals with
    countable.to.numerators.and.denominators,
    numbers.situating.splits of rationals with countable.to.numerators.and.denominators
    are between those two, and
    there is no gap, and
    they aren't next to each other.

    Next to a visible number
    there is a dark number or a gap,
    i.e., nothing.
    I don't believe in gaps on the real line.

    There aren't gaps and there aren't next.numbers
    in numbers.situating.splits of rationals with countable.to.numerators.and.denominators

    --- SoupGate-Win32 v1.05
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  • From Jim Burns@21:1/5 to Ross Finlayson on Mon Sep 16 14:13:04 2024
    On 9/15/2024 9:31 PM, Ross Finlayson wrote:
    On 09/15/2024 03:07 PM, FromTheRafters wrote:
    on 9/15/2024, Ross Finlayson supposed :
    On 09/15/2024 11:03 AM, FromTheRafters wrote:
    After serious thinking Ross Finlayson wrote :

    "What, no witty rejoinder?"

    What you said has no relation to
    the 'nextness' of elements in discrete sets.
    What is 'next' to Pi+2 in the reals?

    In the, "hyper-reals", it's its neighbors,
    in the line-reals, put's previous and next,
    in the field-reals, there's none,
    and in the signal-reals, there's nothing.

    What is the successor function on the reals?
    Give me that, and maybe we can find the
    'next' number greater than Pi.

    Ah, good sir, then I'd like you to consider
    a representation of real numbers as
    with an integer part and a non-integer part,
    the integer part of the integers, and
    the non-integer part a value in [0,1],
    where the values in [0,1], are as of
    this model of (a finite segment of a) continuous domain,
    these iota-values, line-reals,
    as so established as according to the properties of
    extent, density, completeness, and measure,
    fulfilling implementing the Intermediate Value Theorem,
    thus for
    if not being the complete-ordered-field the field-reals,
    yet being these iota-values a continuous domain [0,1]
    these line-reals.

    As n → ∞, (ι=⅟n), ⟨0,ι,2⋅ι,...,n⋅ι⟩ → ℚ∩[0,1]

    ℚ∩[0,1] is not complete.
    ℚ∩[0,1] has one connected component,
    being what you (RF) call "continuous".
    ℚ∩[0,1] has no points next to each other.

    I wonder what you think of something like Hilbert's
    "postulate of continuity" for geometry, as with
    regards to that in the course-of-passage of
    the growth of a continuous quantity, it encounters,
    in order, each of the points in the line.

    That sounds like the Intermediate Value Theorem,
    where "encounters each" == 'no skips".

    The Intermediate Value Theorem
    is equivalent to
    Dedekind completeness.

    --- SoupGate-Win32 v1.05
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  • From Jim Burns@21:1/5 to Jim Burns on Mon Sep 16 14:24:43 2024
    On 9/16/2024 2:13 PM, Jim Burns wrote:
    On 9/15/2024 9:31 PM, Ross Finlayson wrote:
    On 09/15/2024 03:07 PM, FromTheRafters wrote:
    on 9/15/2024, Ross Finlayson supposed :
    On 09/15/2024 11:03 AM, FromTheRafters wrote:
    After serious thinking Ross Finlayson wrote :

    "What, no witty rejoinder?"

    What you said has no relation to
    the 'nextness' of elements in discrete sets.
    What is 'next' to Pi+2 in the reals?

    In the, "hyper-reals", it's its neighbors,
    in the line-reals, put's previous and next,
    in the field-reals, there's none,
    and in the signal-reals, there's nothing.

    What is the successor function on the reals?
    Give me that, and maybe we can find the
    'next' number greater than Pi.

    Ah, good sir, then I'd like you to consider
    a representation of real numbers as
    with an integer part and a non-integer part,
    the integer part of the integers, and
    the non-integer part a value in [0,1],
    where the values in [0,1], are as of
    this model of (a finite segment of a) continuous domain,
    these iota-values, line-reals,
    as so established as according to the properties of
    extent, density, completeness, and measure,
    fulfilling implementing the Intermediate Value Theorem,
    thus for
    if not being the complete-ordered-field the field-reals,
    yet being these iota-values a continuous domain [0,1]
    these line-reals.

    As n → ∞, (ι=⅟n), ⟨0,ι,2⋅ι,...,n⋅ι⟩ → ℚ∩[0,1]

    ℚ∩[0,1] is not complete.
    ℚ∩[0,1] has one connected component,

    Sorry. I meant the opposite of that.
    ℚ∩[0,1] is NOT connected, NOT "continuous".

    For each irrational x ∈ (ℝ\ℚ)∩[0,1]
    ℚ∩[0,x) and ℚ∩(x,1] are open in ℚ∩[0,1]

    being what you (RF) call "continuous".
    ℚ∩[0,1] has no points next to each other.

    I wonder what you think of something like Hilbert's
    "postulate of continuity" for geometry, as with
    regards to that in the course-of-passage of
    the growth of a continuous quantity, it encounters,
    in order, each of the points in the line.

    That sounds like the Intermediate Value Theorem,
    where "encounters each" == 'no skips".

    The Intermediate Value Theorem
    is equivalent to
    Dedekind completeness.



    --- SoupGate-Win32 v1.05
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  • From Ben Bacarisse@21:1/5 to Chris M. Thomasson on Mon Sep 16 23:02:16 2024
    "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> writes:

    On 9/15/2024 9:38 AM, Ben Bacarisse wrote:
    "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> writes:

    On 9/14/2024 11:35 AM, joes wrote:
    Am Sat, 14 Sep 2024 16:01:02 +0200 schrieb WM:
    On 14.09.2024 01:05, FromTheRafters wrote:
    WM explained :

    No, that is your big mistake. In the interval [0, 1] there is a point >>>>>>> next to 0 and a point next to 1, and infinitely many are beteen them. >>>>>> Define 'next' in this context.
    Two points are next to each other means that no point is between them. >>>> Which is the case for no two (different) reals.

    Two points on the real line that are different from one another have
    infinite points between them, and so on and so forth. :^)
    It might be worth pointing out that any non-trivial interval [a, b] on
    the real line (i.e. with b > a) contains an uncountable number of
    points. Constructing the mid point and the quarter points and so on
    only shows a countably infinite number of internal points, but giving a
    bijection between [a, b] and [0, 1] shows that they have the same
    cardinality.

    Agreed. Afaict, one way to cover all the points is to draw a solid line between two different points p0 and p1 where p0 does not equal p1. We can
    say the line covers them all? Fair enough? Put two different points on a piece of paper and draw a line from p0 to p1. That line contains infinitely dense points.

    Too much physics for me to comment.

    --
    Ben.

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  • From Jim Burns@21:1/5 to Chris M. Thomasson on Mon Sep 16 17:38:28 2024
    On 9/16/2024 4:15 PM, Chris M. Thomasson wrote:
    On 9/16/2024 10:30 AM, Jim Burns wrote:
    On 9/15/2024 3:47 PM, WM wrote:
    On 14.09.2024 20:35, joes wrote:
    Am Sat, 14 Sep 2024 16:01:02 +0200 schrieb WM:

    Two points are next to each other
    means that
    no point is between them.

    Which is the case for no two (different) reals.

    For no two different visible numbers,
    to be precise.

    ⎛ WM: Two points are next to each other
    ⎜ means that
    ⎝ no point is between them.

    WM is a strange one.
    If no point is between them,
    then they are the same.

    If no point is between different points,
    then the points aren't in the complete line.

    But perhaps they are points in something else,
    perhaps in a line of integers.
    Points can be next to each other in the integers,
    as successors and predecessors.

    Going over boring details, such as
    what it is to be next to each other,
    is a tactic for countering Radical! New! claims
    which, upon a more careful look, turn out to not.be
    about what is broadly meant by complete line, etc.

    Here, we see a rare example of WM using words
    in the usual way: "no point between".
    But he describes something not the complete line,
    something with points next to each other.

    --- SoupGate-Win32 v1.05
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  • From Ben Bacarisse@21:1/5 to Ross Finlayson on Mon Sep 16 22:47:37 2024
    Ross Finlayson <ross.a.finlayson@gmail.com> writes:

    On 09/15/2024 09:38 AM, Ben Bacarisse wrote:
    "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> writes:

    On 9/14/2024 11:35 AM, joes wrote:
    Am Sat, 14 Sep 2024 16:01:02 +0200 schrieb WM:
    On 14.09.2024 01:05, FromTheRafters wrote:
    WM explained :

    No, that is your big mistake. In the interval [0, 1] there is a point >>>>>>> next to 0 and a point next to 1, and infinitely many are beteen them. >>>>>> Define 'next' in this context.
    Two points are next to each other means that no point is between them. >>>> Which is the case for no two (different) reals.

    Two points on the real line that are different from one another have
    infinite points between them, and so on and so forth. :^)

    It might be worth pointing out that any non-trivial interval [a, b] on
    the real line (i.e. with b > a) contains an uncountable number of
    points. Constructing the mid point and the quarter points and so on
    only shows a countably infinite number of internal points, but giving a
    bijection between [a, b] and [0, 1] shows that they have the same
    cardinality.

    Perhaps you might care to define "function" and "topology".

    Do you not have any good textbooks?

    --
    Ben.

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  • From Jim Burns@21:1/5 to Ross Finlayson on Tue Sep 17 13:59:06 2024
    On 9/16/2024 10:55 PM, Ross Finlayson wrote:
    On 09/16/2024 11:24 AM, Jim Burns wrote:
    On 9/16/2024 2:13 PM, Jim Burns wrote:
    On 9/15/2024 9:31 PM, Ross Finlayson wrote:
    On 09/15/2024 03:07 PM, FromTheRafters wrote:

    What is the successor function on the reals?
    Give me that, and maybe we can find the
    'next' number greater than Pi.

    Ah, good sir, then I'd like you to consider
    a representation of real numbers as
    with an integer part and a non-integer part,
    the integer part of the integers, and
    the non-integer part a value in [0,1],
    where the values in [0,1], are as of
    this model of (a finite segment of a) continuous domain,
    these iota-values, line-reals,
    as so established as according to the properties of
    extent, density, completeness, and measure,
    fulfilling implementing the Intermediate Value Theorem,
    thus for
    if not being the complete-ordered-field the field-reals,
    yet being these iota-values a continuous domain [0,1]
    these line-reals.

    As n → ∞, (ι=⅟n), ⟨0,ι,2⋅ι,...,n⋅ι⟩ → ℚ∩[0,1]

    Here follows the meaning of
    my.best.guess.at.what.you.mean.
    ⎛ I invite you to either
    ⎜ continue implicitly accepting my guess or
    ⎝ clarify what.you.mean.

    Define
    f: ℕ → 𝒫(ℝ)
    f(n) = ⟨0/n,1/n,2/n,...,n/n⟩

    Define
    ran(f) = limⁿᐧᐧᐧ f(n)


    lim.infⁿᐧᐧᐧ f(n) ⊆ limⁿᐧᐧᐧ f(n) ⊆ lim.supⁿᐧᐧᐧ f(n)

    https://en.wikipedia.org/wiki/Set-theoretic_limit

    lim.infⁿᐧᐧᐧ f(n) =
    ⋃⁰ᑉⁿ ⋂ⁿᑉʲ f(j) =
    ⋃⁰ᑉⁿ {0,1} =
    {0,1}

    lim.supⁿᐧᐧᐧ f(n) =
    ⋂⁰ᑉⁿ ⋃ⁿᑉʲ f(j) =
    ⋂⁰ᑉⁿ ℚ∩[0,1] =
    ℚ∩[0,1]

    {0,1} ⊆ limⁿᐧᐧᐧ f(n) ⊆ ℚ∩[0,1]

    ----
    ⋂ⁿᑉʲ f(j) = {0,1}
    ⋃ⁿᑉʲ f(j) = ℚ∩[0,1]

    ⎛ ⋂ⁿᑉʲ f(j) ⊆
    ⎜ ⟨0/j,1/j,...,j⋅/j⟩ ∩ ⟨0/j⁺¹,1/j⁺¹,...,j⁺¹⋅/j⁺¹⟩ =
    ⎜ {0,1}

    ⎝ ⋂ⁿᑉʲ f(j) ⊇ {0,1}

    ⎛ ∀ᴺj>n: f(j) ⊆ ℚ∩[0,1]
    ⎜ ⋃ⁿᑉʲ f(j) ⊆ ℚ∩[0,1]

    ⎜ ∀p/q ∈ ℚ∩[0,1]:
    ⎜ nq > n ∧
    ⎜ np/nq ∈ f(nq) ⊆ ⋃ⁿᑉʲ f(j) ∧
    ⎜ np/nq = p/q ∈ ⋃ⁿᑉʲ f(j)
    ⎝ ℚ∩[0,1] ⊆ ⋃ⁿᑉʲ f(j)

    It's shewn that [0,1] has no points not in ran(f).

    Has it been shown, though?

    For ran(f) = limⁿᐧᐧᐧ ⟨0/n,1/n,2/n,...,n/n⟩
    {0,1} ⊆ ran(f) ⊆ ℚ∩[0,1] ∌ ⅟√2 ∈ [0,1]

    If ran(f) isn't that, then what is ran(f)?

    About 2014, ....

    Was that your last word on ran(f), in 2014?

    I had hoped you would answer the point I've made.

    --- SoupGate-Win32 v1.05
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  • From Jim Burns@21:1/5 to Ross Finlayson on Tue Sep 17 15:26:22 2024
    On 9/16/2024 10:53 PM, Ross Finlayson wrote:
    On 09/12/2024 11:05 AM, Jim Burns wrote:

    [...]

    Excuse this delay,
    where as
    with regards to
    why Russell's paradox applies to
    just a plain old inductive set
    when the merely-finite sets are
    all the sets in the theory
    after reverse mathematics
    before infinity's axiomatized,
    that the same telling blow
    that Russell used to submarine Frege
    is just declared gone away,
    is what it is.

    Russell's paradox concerns a set which,
    by unrestricted comprehension,
    exists, but which,
    because it both is and isn't self.membered,
    not.exists.

    The standard method of resolving the paradox
    is to not.use unrestricted comprehension.

    A plain.old.inductive.set is NOT
    a set which both is and isn't self.membered.
    It isn't self.membered.
    I would not say Russell's paradox applies.

    A plain.old.inductive.set IS
    banned from the company of merely.finite sets,
    because it isn't finite.

    Perhaps you (RF) are drawing a parallel between
    two examples of being banned.

    A typical resolution of
    Russell's self.membered and non.self.membered set
    is to modify our axioms so that
    we can avoid claiming it exists.

    There is also the Revision Theory of Truth,
    which strives to expand our notion of Truth to
    where it can deal with these tangled references. https://plato.stanford.edu/entries/truth-revision/ https://en.wikipedia.org/wiki/Revision_theory

    I.e., in ZF minus Infinity,
    comprehending the usual set of v.N. ordinals,
    results this.

    In ZF-Infinity,
    the usual set of finite ordinals might not.exist,
    and, if not.existing, not.causes a paradox.

    In ZF-Infinity+Anti.infinity,
    there definitely isn't a set of finite ordinals.

    --- SoupGate-Win32 v1.05
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  • From Jim Burns@21:1/5 to Ross Finlayson on Tue Sep 17 16:11:25 2024
    On 9/17/2024 2:57 PM, Ross Finlayson wrote:
    On 09/17/2024 10:59 AM, Jim Burns wrote:

    [...]

    I do seem to recall that
    your account was around when it was set out,
    for example,
    that least-upper-bound is nice neat trivial next,

    In ℕ and ℤ
    there are integers next to each other,
    which is to say,
    there are integers with no other integers between.

    In ℚ
    there are no rationals next to each other,
    because
    there are no rationals with no rationals between.

    In ℝ
    there are no reals next to each other,
    because,
    however close |x-y| = d > 0 is,
    there are no d.sized gaps in the rationals,
    so there must be rationals between.

    The least.upper.bound of (0,1) is 1
    but 1 isn't next to any element of (0,1)

    Unlike ℕ and ℤ, ℚ and ℝ do not 'next'.

    --- SoupGate-Win32 v1.05
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  • From Jim Burns@21:1/5 to Ross Finlayson on Tue Sep 17 18:20:08 2024
    On 9/17/2024 4:16 PM, Ross Finlayson wrote:
    On 09/17/2024 01:11 PM, Jim Burns wrote:
    On 9/17/2024 2:57 PM, Ross Finlayson wrote:

    Unlike ℕ and ℤ,  ℚ and ℝ do not 'next'.

    Then, for initial segments or n-sets of naturals,
    the LUB of {f{n < m)} is "next": f(m+1).

    Yes.
    (Presumably, you mean lub.{n:n≤m} = m. f()=? )

    You might enjoy this:

    ⎛ Define ℕ as well.ordered and nexted.
    ⎜ well.ordered (A ⊆ ℕ holds min.A or is empty)
    ⎝ nexted (m ∈ ℕ has m+1 m-1 next, except 0=min.ℕ)

    ⎛ In a finite order,
    ⎝ each nonempty subset is 2.ended.

    Consider upper.bounded nonempty A ⊆ ℕ and
    its set UB[A] ⊆ ℕ of upper.bounds
    A ᵉᵃᶜʰ≤ᵉᵃᶜʰ UB[A]

    A is upper.bounded.
    UB[A] ⊆ ℕ is nonempty.
    UB[A] holds min.UB[A]

    A holds min.UB[A]
    Otherwise,
    (min.UB[A])-1 is a less.than.least upper.bound
    (that is, what.it.is is gibberish)

    A holds min.UB[A] which upper.bounds A
    min.UB[A] = max.A
    Upper.bounded nonempty A holds max.A

    Upper.bounded nonempty A ⊆ ℕ holds min.A
    (well.order)

    Upper.bounded nonempty A is 2.ended.

    And, similarly,
    each (also.bounded) nonempty S ⊆ A is 2.ended.

    Upper.bounded nonempty A ⊆ ℕ is finite,
    because
    ℕ is well.ordered and nexted.

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to joes on Wed Sep 18 14:33:17 2024
    On 15.09.2024 23:07, joes wrote:
    Am Sun, 15 Sep 2024 21:52:30 +0200 schrieb WM:

    No definable points, to be precise. If there is no point next to 0 then
    there is a gap. I do not accept gaps on the real line.
    I.e. „neighbouring” points can’t be defined. There are no gaps.

    So it is.These points are dark.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Richard Damon on Wed Sep 18 14:44:37 2024
    On 16.09.2024 03:16, Richard Damon wrote:
    On 9/15/24 3:39 PM, WM wrote:
    On 15.09.2024 18:38, Ben Bacarisse wrote:

    It might be worth pointing out that any non-trivial interval [a, b] on
    the real line (i.e. with b > a) contains an uncountable number of
    points.

    That proves that small intervals cannot be defined (they are dark). An
    uncountable number cannot be completed without a finite entry.

    But arbirary small intevals CAN be defined.

    Try to name one that can't.

    Define an interval comprising 9182024 points, starting at zero.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Jim Burns on Wed Sep 18 14:39:02 2024
    On 16.09.2024 19:30, Jim Burns wrote:

    There aren't gaps and there aren't next.numbers

    So what is next instead?

    Regards, WM

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  • From WM@21:1/5 to joes on Wed Sep 18 14:34:49 2024
    On 15.09.2024 23:09, joes wrote:
    Am Sun, 15 Sep 2024 21:39:46 +0200 schrieb WM:

    That proves that small intervals cannot be defined (they are dark). An
    uncountable number cannot be completed without a finite entry.
    Why do you believe there must be a total order?

    That is a basic feature of the real numbers.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to Ross Finlayson on Wed Sep 18 10:02:12 2024
    On 9/17/2024 10:58 PM, Ross Finlayson wrote:
    On 09/17/2024 03:20 PM, Jim Burns wrote:
    On 9/17/2024 4:16 PM, Ross Finlayson wrote:
    On 09/17/2024 01:11 PM, Jim Burns wrote:
    On 9/17/2024 2:57 PM, Ross Finlayson wrote:

    Unlike ℕ and ℤ,  ℚ and ℝ do not 'next'.

    Then, for initial segments or n-sets of naturals,
    the LUB of {f{n < m)} is "next": f(m+1).

    Yes.
    (Presumably, you mean lub.{n:n≤m} = m. f()=? )

    You might enjoy this:

    ⎛ Define ℕ as well.ordered and nexted.
    ⎜ well.ordered (A ⊆ ℕ holds min.A or is empty)
    ⎝ nexted (m ∈ ℕ has m+1 m-1 next, except 0=min.ℕ)

    ⎛ In a finite order,
    ⎝ each nonempty subset is 2.ended.

    Consider upper.bounded nonempty A ⊆ ℕ and
    its set UB[A] ⊆ ℕ of upper.bounds
    A ᵉᵃᶜʰ≤ᵉᵃᶜʰ UB[A]

    A is upper.bounded.
    UB[A] ⊆ ℕ is nonempty.
    UB[A] holds min.UB[A]

    A holds min.UB[A]
    Otherwise,
    (min.UB[A])-1 is a less.than.least upper.bound
    (that is, what.it.is is gibberish)

    A holds min.UB[A] which upper.bounds A
    min.UB[A] = max.A
    Upper.bounded nonempty A holds max.A

    Upper.bounded nonempty A ⊆ ℕ holds min.A
    (well.order)

    Upper.bounded nonempty A is 2.ended.

    And, similarly,
    each (also.bounded) nonempty S ⊆ A is 2.ended.

    Upper.bounded nonempty A ⊆ ℕ is finite,
    because
    ℕ is well.ordered and nexted.

    Yet,
    didn't you just reject, "infinite middle"?

    Please include in your posts
    more of what you must consider
    goes without saying;
    you must, as you post without saying it.

    I can't track you without footprints
    or candy wrappers or something
    to hint at where you're going (metaphorically).

    ----
    Yes,
    I am still recognizing the falsehood of
    "infinite middle" (0:ω symmetry).
    The post to which you respond is pretty much
    a Festshrift to rejecting infinite middle.
    I cannot guess why you need to hear that.
    And I have tried.


    ℕ is uniformly well.ordered and nexted
    apart from 0=min.ℕ
    That is what ℕ is.

    From the uniform well.ordering and nexting
    it is derivable (see prev.) that,
    uniformly, finitely.many are before and,
    uniformly, infinitely many are after.

    ℕ is uniformly on the near side of
    infinite not.the.middle.
    ℕ is lacking an infinite middle.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Wed Sep 18 10:31:42 2024
    On 9/18/2024 8:39 AM, WM wrote:
    On 16.09.2024 19:30, Jim Burns wrote:
    On 9/15/2024 3:47 PM, WM wrote:

    I don't believe in gaps on the real line.

    There aren't gaps and there aren't next.numbers
    in numbers.situating.splits of rationals with
    countable.to.numerators.and.denominators

    So what is next instead?

    What is between one and the next?
    A gap.

    There is no gap in the real line.

    There is no next in the real line.
    If there were, there'd be a gap.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Wed Sep 18 22:49:23 2024
    Am 18.09.2024 um 21:35 schrieb Chris M. Thomasson:
    On 9/18/2024 5:44 AM, WM wrote:
    On 16.09.2024 03:16, Richard Damon wrote:
    On 9/15/24 3:39 PM, WM wrote:
    On 15.09.2024 18:38, Ben Bacarisse wrote:

    It might be worth pointing out that any non-trivial interval [a, b] on >>>>> the real line (i.e. with b > a) contains an uncountable number of
    points.

    That proves that small intervals cannot be defined (they are dark).

    But arbirary small intervals CAN be defined.

    Try to name one that can't.

    Define an interval comprising 9182024 points, starting at zero.

    Mückenheim, Du bist wirklich der größte Spinner unter der Sonne!

    Hint: The IS NO "interval comprising 9182024 points", hence NOTHING TO
    DEFINE HERE, you silly crank.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to Ross Finlayson on Wed Sep 18 17:27:53 2024
    On 9/18/2024 4:11 PM, Ross Finlayson wrote:
    On 09/18/2024 07:02 AM, Jim Burns wrote:
    On 9/17/2024 10:58 PM, Ross Finlayson wrote:
    On 09/17/2024 03:20 PM, Jim Burns wrote:
    On 9/17/2024 4:16 PM, Ross Finlayson wrote:
    On 09/17/2024 01:11 PM, Jim Burns wrote:
    On 9/17/2024 2:57 PM, Ross Finlayson wrote:

    Unlike ℕ and ℤ,  ℚ and ℝ do not 'next'.

    Then, for initial segments or n-sets of naturals,
    the LUB of {f{n < m)} is "next": f(m+1).

    Yes.
    (Presumably, you mean lub.{n:n≤m} = m. f()=? )

    You might enjoy this:

    ⎛ Define ℕ as well.ordered and nexted.
    ⎜ well.ordered (A ⊆ ℕ holds min.A or is empty)
    ⎝ nexted (m ∈ ℕ has m+1 m-1 next, except 0=min.ℕ)

    ⎛ In a finite order,
    ⎝ each nonempty subset is 2.ended.

    Consider upper.bounded nonempty A ⊆ ℕ and
    its set UB[A] ⊆ ℕ of upper.bounds
    A ᵉᵃᶜʰ≤ᵉᵃᶜʰ UB[A]

    A is upper.bounded.
    UB[A] ⊆ ℕ is nonempty.
    UB[A] holds min.UB[A]

    A holds min.UB[A]
    Otherwise,
    (min.UB[A])-1 is a less.than.least upper.bound
    (that is, what.it.is is gibberish)

    A holds min.UB[A] which upper.bounds A
    min.UB[A] = max.A
    Upper.bounded nonempty A holds max.A

    Upper.bounded nonempty A ⊆ ℕ holds min.A
    (well.order)

    Upper.bounded nonempty A is 2.ended.

    And, similarly,
    each (also.bounded) nonempty S ⊆ A is 2.ended.

    Upper.bounded nonempty A ⊆ ℕ is finite,
    because
    ℕ is well.ordered and nexted.

    Yet,
    didn't you just reject, "infinite middle"?

    Please include in your posts
    more of what you must consider
    goes without saying;
    you must, as you post without saying it.

    I can't track you without footprints
    or candy wrappers or something
    to hint at where you're going (metaphorically).

    ----
    Yes,
    I am still recognizing the falsehood of
    "infinite middle" (0:ω symmetry).
    The post to which you respond is pretty much
    a Festshrift to rejecting infinite middle.
    I cannot guess why you need to hear that.
    And I have tried.


    ℕ is uniformly well.ordered and nexted
      apart from 0=min.ℕ
    That is what ℕ is.

     From the uniform well.ordering and nexting
    it is derivable (see prev.) that,
    uniformly, finitely.many are before and,
    uniformly, infinitely many are after.

    ℕ is uniformly on the near side of
    infinite not.the.middle.
    ℕ is lacking an infinite middle.

    Yet,
    didn't you just reject, "infinite middle"?

    Yet,
    in the infinite limit, d -> infinity.

    Yet,
    each number in well.ordered nexted ℕ is
    finitely.far from 0 and
    infinitely.far from ω

    'finite' meaning
    each subset 2.ended or empty

    Please consider this as a tendered reserve and
    not so much a purposeful omission of any sort,
    where as with regards to
    my tens of thousands of posts and
    brief essays to usenet
    there are more than enough crumbs to go around.

    Thank you for the offer, Tom Sawyer,
    to allow me to do your work for you,
    but I decline.


    You tell me that, somewhen approximately in 2014,
    you posted a proof that
    limⁿᐧᐧᐧ ⟨0/n,1/n,...,n/n⟩ is complete.

    Do you still remember how you proved that?
    Would you like other people to know how you did that?
    Maybe saying how is something you could do.

    Did you have anything to say about my proof up thread
    Date: Tue, 17 Sep 2024 13:59:06 -0400
    that
    {0,1} ⊆ limⁿᐧᐧᐧ⟨0/n,1/n,...,n/n⟩ ⊆ ℚ∩[0,1]
    ℚ∩[0,1] ∌ ⅟√2 ∈ [0,1]
    limⁿᐧᐧᐧ⟨0/n,1/n,...,n/n⟩ ∌ ⅟√2 ∈ [0,1]

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Wed Sep 18 18:50:17 2024
    On 9/18/24 8:33 AM, WM wrote:
    On 15.09.2024 23:07, joes wrote:
    Am Sun, 15 Sep 2024 21:52:30 +0200 schrieb WM:

    No definable points, to be precise. If there is no point next to 0 then
    there is a gap. I do not accept gaps on the real line.
    I.e. „neighbouring” points can’t be defined. There are no gaps.

    So it is.These points are dark.

    Regards, WM



    Nope, they just aren't.

    To be distinct points, there must be a gap, so they can not be
    neighboring, the space is filled by more points, creating smaller and
    smaller gaps, that only disappear in the infinite.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Thu Sep 19 02:03:32 2024
    Am 18.09.2024 um 22:49 schrieb Moebius:
    Am 18.09.2024 um 21:35 schrieb Chris M. Thomasson:
    On 9/18/2024 5:44 AM, WM wrote:
    On 16.09.2024 03:16, Richard Damon wrote:
    On 9/15/24 3:39 PM, WM wrote:
    On 15.09.2024 18:38, Ben Bacarisse wrote:

    It might be worth pointing out that any non-trivial interval [a,
    b] on
    the real line (i.e. with b > a) contains an uncountable number of
    points.

    That proves that small intervals cannot be defined (they are dark).

    But arbirary small intervals CAN be defined.

    Try to name one that can't.

    Define an interval comprising 9182024 points, starting at zero.

    Mückenheim, Du bist wirklich der größte Spinner unter der Sonne!

    Hint: The IS NO "interval comprising 9182024 points", hence NOTHING TO
    DEFINE HERE, you silly crank.

    WE: "We can define any triangle we want."

    WM: "Define a triangle with four corners"-

    *sigh*

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Thu Sep 19 02:17:27 2024
    Am 18.09.2024 um 22:49 schrieb Moebius:
    Am 18.09.2024 um 21:35 schrieb Chris M. Thomasson:
    On 9/18/2024 5:44 AM, WM wrote:
    On 16.09.2024 03:16, Richard Damon wrote:
    On 9/15/24 3:39 PM, WM wrote:
    On 15.09.2024 18:38, Ben Bacarisse wrote:

    It might be worth pointing out that any non-trivial interval [a,
    b] on
    the real line (i.e. with b > a) contains an uncountable number of
    points.

    That proves that small intervals cannot be defined (they are dark).

    But arbirary small intervals CAN be defined.

    Try to name one that can't.

    Define an interval comprising 9182024 points, starting at zero.

    Mückenheim, Du bist wirklich der größte Spinner unter der Sonne!

    Hint: The IS NO "interval comprising 9182024 points", hence NOTHING TO
    DEFINE HERE, you silly crank.

    WE: "We can define any triangle we want."

    WM: "Define a triangle with four corners."

    *sigh*

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Thu Sep 19 02:31:39 2024
    Am 18.09.2024 um 21:35 schrieb Chris M. Thomasson:
    On 9/18/2024 5:44 AM, WM wrote:

    Define an interval comprising [exactly] 9182024 points, starting at zero.

    p0 = (0, 0)
    p1 = (1, 0)
    pdif = p1 - p0;
    pnormal_base = 1.f / 9182024;

    // add one more point to make it all the way to p1...

    No good idea, since in this case your program will deliver 9182024 + 1
    points, right?

    for (i = 0; i < 9182024 + 1; ++i)
    {
       pnormal = pnormal_base * i;
       p2 = p0 + pdif * pnormal;
       plot(p2);
    }

    ?

    Nope. The (real) interval [0, 1] consists of more points than just
    9182024 (or 9182024 +1).

    Actually, of (uncountably) infinitely many points.

    Hint: WM -this fucking asshole full of shit- is always talking nonsense.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Thu Sep 19 12:38:43 2024
    On 18.09.2024 16:31, Jim Burns wrote:
    On 9/18/2024 8:39 AM, WM wrote:
    On 16.09.2024 19:30, Jim Burns wrote:
    On 9/15/2024 3:47 PM, WM wrote:

    I don't believe in gaps on the real line.

    There aren't gaps and there aren't next.numbers
    in numbers.situating.splits of rationals with
    countable.to.numerators.and.denominators

    So what is next instead?

    What is between one and the next?
    A gap.

    There is no gap in the real line.

    There is no next in the real line.
    If there were, there'd be a gap.

    Try to use logic. Either there is a point next to zero or there is no
    point next to zero, that means there is nothing, i.e., a gap.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Thu Sep 19 07:44:13 2024
    On 9/19/24 7:22 AM, WM wrote:
    On 19.09.2024 00:50, Richard Damon wrote:
    On 9/18/24 8:33 AM, WM wrote:
    On 15.09.2024 23:07, joes wrote:
    Am Sun, 15 Sep 2024 21:52:30 +0200 schrieb WM:

    No definable points, to be precise. If there is no point next to 0
    then
    there is a gap. I do not accept gaps on the real line.
    I.e. „neighbouring” points can’t be defined. There are no gaps.

    So it is.These points are dark.

    Nope, they just aren't.

    To be distinct points, there must be a gap, so they can not be
    neighboring,

    There are infinitely many points with no extension filling the space.

    Right, and none "next" to another, because there is always another in
    between them.


    the space is filled by more points, creating smaller and smaller gaps

    That is potential infinity. In actual infinity all points are there at
    once.

    No, that is what infinity actually is. There are not two different
    "kinds" of it. All the point do exist, and we can express any of them.

    Unless your difference is trying to express the difference between
    Aleph_0 and Omega, but failing.

    It seems you are just inventing a term to break your logic system, and
    you need to figure out what you actually mean by "all are there at once" actually means, since in the potential, all the points are defined.

    There are an infinite number of Natural and Rational Numbers. That
    number is called Aleph_0

    There is no highest value for either of these, and the unit fractions,
    the reciprocal of the Natural Numbers (> 0) thus have no lowest value,
    or one "next to" 0.

    The Infinite Set of these values actually exists, and all the values are
    in it, so it seems that must be your actual infinity if it is to have
    any paractical meaning.

    If you mean that we, as finite beings, could see all of them "at once"
    then you are just insane and don't undetstand what infinity actually is
    and your "actual infinity" just isn't actually infinity.


    Regards, WM


    , that only disappear in the infinite.


    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Thu Sep 19 13:22:45 2024
    On 19.09.2024 00:50, Richard Damon wrote:
    On 9/18/24 8:33 AM, WM wrote:
    On 15.09.2024 23:07, joes wrote:
    Am Sun, 15 Sep 2024 21:52:30 +0200 schrieb WM:

    No definable points, to be precise. If there is no point next to 0 then >>>> there is a gap. I do not accept gaps on the real line.
    I.e. „neighbouring” points can’t be defined. There are no gaps.

    So it is.These points are dark.

    Nope, they just aren't.

    To be distinct points, there must be a gap, so they can not be
    neighboring,

    There are infinitely many points with no extension filling the space.

    the space is filled by more points, creating smaller and
    smaller gaps

    That is potential infinity. In actual infinity all points are there at once.

    Regards, WM


    , that only disappear in the infinite.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Thu Sep 19 12:38:41 2024
    Am Thu, 19 Sep 2024 13:22:45 +0200 schrieb WM:
    On 19.09.2024 00:50, Richard Damon wrote:
    On 9/18/24 8:33 AM, WM wrote:
    On 15.09.2024 23:07, joes wrote:
    Am Sun, 15 Sep 2024 21:52:30 +0200 schrieb WM:

    No definable points, to be precise. If there is no point next to 0
    then there is a gap. I do not accept gaps on the real line.
    I.e. „neighbouring” points can’t be defined. There are no gaps.
    So it is.These points are dark.
    Nope, they just aren't.
    To be distinct points, there must be a gap, so they can not be
    neighboring,
    There are infinitely many points with no extension filling the space.
    Yes, and they are not neighbours.

    the space is filled by more points, creating smaller and smaller gaps
    That is potential infinity. In actual infinity all points are there at
    once.
    They are there.

    , that only disappear in the infinite.
    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Thu Sep 19 12:36:31 2024
    Am Thu, 19 Sep 2024 12:38:43 +0200 schrieb WM:
    On 18.09.2024 16:31, Jim Burns wrote:
    On 9/18/2024 8:39 AM, WM wrote:
    On 16.09.2024 19:30, Jim Burns wrote:
    On 9/15/2024 3:47 PM, WM wrote:

    I don't believe in gaps on the real line.

    There aren't gaps and there aren't next.numbers in
    numbers.situating.splits of rationals with
    countable.to.numerators.and.denominators

    So what is next instead?

    What is between one and the next? A gap.
    There is no gap in the real line.
    There is no next in the real line.
    If there were, there'd be a gap.

    Try to use logic. Either there is a point next to zero or there is no
    point next to zero, that means there is nothing, i.e., a gap.
    If there were a point next to zero, there would be a gap inbetween.
    Instead, there is an infinity.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Moebius on Thu Sep 19 14:55:01 2024
    On 18.09.2024 22:49, Moebius wrote:
    Am 18.09.2024 um 21:35 schrieb Chris M. Thomasson:
    On 9/18/2024 5:44 AM, WM wrote:
    On 16.09.2024 03:16, Richard Damon wrote:
    On 9/15/24 3:39 PM, WM wrote:
    On 15.09.2024 18:38, Ben Bacarisse wrote:

    It might be worth pointing out that any non-trivial interval [a,
    b] on
    the real line (i.e. with b > a) contains an uncountable number of
    points.

    That proves that small intervals cannot be defined (they are dark).

    But arbitrary small intervals CAN be defined.

    Try to name one that can't.

    Define an interval comprising 9182024 points, starting at zero.

    There IS NO "interval comprising 9182024 points", hence NOTHING TO
    DEFINE HERE,

    How can infinitely many points be accumulated without a first one? This
    belief proves that matheology is mistaken.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Thu Sep 19 15:02:07 2024
    On 19.09.2024 13:44, Richard Damon wrote:
    On 9/19/24 7:22 AM, WM wrote:
    On 19.09.2024 00:50, Richard Damon wrote:
    On 9/18/24 8:33 AM, WM wrote:
    On 15.09.2024 23:07, joes wrote:
    Am Sun, 15 Sep 2024 21:52:30 +0200 schrieb WM:

    No definable points, to be precise. If there is no point next to 0 >>>>>> then
    there is a gap. I do not accept gaps on the real line.
    I.e. „neighbouring” points can’t be defined. There are no gaps. >>>>
    So it is.These points are dark.

    Nope, they just aren't.

    To be distinct points, there must be a gap, so they can not be
    neighboring,

    There are infinitely many points with no extension filling the space.

    Right, and none "next" to another, because there is always another in
    between them.

    "always another" is potential infinity. I am discussing actual infinity
    where all are there at once and no "always" is used.


    the space is filled by more points, creating smaller and smaller gaps

    That is potential infinity. In actual infinity all points are there at
    once.

    No, that is what infinity actually is. There are not two different
    "kinds" of it. All the point do exist, and we can express any of them.

    Then you need no "always" but can point directly to the first point next
    to another.
    The Infinite Set of these values actually exists, and all the values are
    in it,

    that includes the first point of the interval and the second and so on.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to joes on Thu Sep 19 15:03:37 2024
    On 19.09.2024 14:36, joes wrote:
    Am Thu, 19 Sep 2024 12:38:43 +0200 schrieb WM:


    Try to use logic. Either there is a point next to zero or there is no
    point next to zero, that means there is nothing, i.e., a gap.
    If there were a point next to zero, there would be a gap inbetween.

    Infinitely many points of zero extension fill the space without gaps.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to joes on Thu Sep 19 15:06:40 2024
    On 19.09.2024 14:38, joes wrote:
    Am Thu, 19 Sep 2024 13:22:45 +0200 schrieb WM:

    There are infinitely many points with no extension filling the space.
    Yes, and they are not neighbours.

    Either they are next to each other ot somethig else is in between.

    the space is filled by more points, creating smaller and smaller gaps
    That is potential infinity. In actual infinity all points are there at
    once.
    They are there.

    But cannot be found. For instance the smallest positive point.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to Jim Burns on Thu Sep 19 14:02:54 2024
    On 9/19/2024 1:29 PM, Jim Burns wrote:
    On 9/19/2024 12:29 AM, Ross Finlayson wrote:

    [...]

    ℝ is what.we.mean.by the continuum because
    ℚ is gapless (ℚ does not 'next')
    ⎛ ¬∃q,q″ ∈ ℚ: q < q″  ∧
    ⎝   ¬∃q′ ∈ ℚ: q < q′ < q″
    and ℝ completes ℚ
    ⎛ ¬∃S ⊆ ℚ:  {} ≠ S ᵉᵃᶜʰ<ᵉᵃᶜʰ ℚ\S ≠ {}  ∧ ⎝   ¬∃r ∈ ℝ\ℚ:  S ᵉᵃᶜʰ< r <ᵉᵃᶜʰ ℚ\S

    I tried to simplify those expressions,
    but I'm not convinced I got that right.
    This is right:

    ⎛ ¬∃r,r″ ∈ ℝ: r < r″ ∧
    ⎝ ¬∃r′ ∈ ℝ: r < r′ < r″

    ⎛ ¬∃S ⊆ ℝ: {} ≠ S ≠ ℝ ∧
    ⎜ S ᵉᵃᶜʰ<ₑₓᵢₛₜₛ S ᵉᵃᶜʰ<ᵉᵃᶜʰ ℝ\S ∧
    ⎝ ¬∃r ∈ ℝ: S ᵉᵃᶜʰ< r ≤ᵉᵃᶜʰ ℝ\S

    ℝ is gapless and complete.

    such that
    crossing ℝ×ℝ.curves intersect,
    either in ℚ or in ℝ\ℚ

    That is what I think is the motivation
    for what.we.mean.by the continuum.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to Ross Finlayson on Thu Sep 19 13:29:14 2024
    On 9/19/2024 12:29 AM, Ross Finlayson wrote:
    On 09/18/2024 01:51 PM, Ross Finlayson wrote:
    On 09/18/2024 12:37 PM, Chris M. Thomasson wrote:
    On 9/17/2024 7:58 PM, Ross Finlayson wrote:
    On 09/17/2024 01:11 PM, Jim Burns wrote:

    Unlike ℕ and ℤ,  ℚ and ℝ do not 'next'.
    [...]

    Put pencil to paper and draw a straight line,
    each of the points were encountered in order.
    No matter how fine it's sliced, ....

    Sometimes called "Hilbert's Postulate of Continuity".

    Which he says is required, ....

    In a straight line or in a straight anything,
    its order '<' is
    ⎛ connected (x≠y ⇒ x<y ∨ y<x)
    ⎜ transitive (x<y ∧ y<z ⇒ x<z)
    ⎜ asymmetric (x<y ⇒ y≮x)
    ⎝ irreflexive (x≮x)

    That states that
    each of the points are encountered in order,
    but
    it leaves unstated what points are there,
    and whether they are points which 'next'.

    ℝ is what.we.mean.by the continuum because
    ℚ is gapless (ℚ does not 'next')
    ⎛ ¬∃q,q″ ∈ ℚ: q < q″ ∧
    ⎝ ¬∃q′ ∈ ℚ: q < q′ < q″
    and ℝ completes ℚ
    ⎛ ¬∃S ⊆ ℚ: {} ≠ S ᵉᵃᶜʰ<ᵉᵃᶜʰ ℚ\S ≠ {} ∧
    ⎝ ¬∃r ∈ ℝ\ℚ: S ᵉᵃᶜʰ< r <ᵉᵃᶜʰ ℚ\S
    such that
    crossing ℝ×ℝ.curves intersect,
    either in ℚ or in ℝ\ℚ

    We have found that it is necessary and sufficient
    for crossing curves to intersect
    in order to serve as what.we.mean.by continuum.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Thu Sep 19 14:31:20 2024
    On 9/19/2024 6:38 AM, WM wrote:
    On 18.09.2024 16:31, Jim Burns wrote:
    On 9/18/2024 8:39 AM, WM wrote:
    On 16.09.2024 19:30, Jim Burns wrote:
    On 9/15/2024 3:47 PM, WM wrote:

    I don't believe in gaps on the real line.

    There aren't gaps and there aren't next.numbers
    in numbers.situating.splits of rationals with
    countable.to.numerators.and.denominators

    So what is next instead?

    What is between one and the next?
    A gap.

    There is no gap in the real line.

    There is no next in the real line.
    If there were, there'd be a gap.

    Try to use logic.
    Either there is a point next to zero
    or there is no point next to zero,

    Consider ABCDEFGHIJKLMNOPQRSTUVWXYZ

    Q is between A and Z
    A and Z are not next to each other.

    Nothing is between P and Q
    P and Q are next to each other.

    ⎛ There is a gap between P and Q
    ⎜ A gap isn't some _presence_
    ⎜ A gap is an _absence_ of whatever.

    ⎜ Either there is a point with
    ⎜ an _absence_ between it and zero,
    ⎜ or there _isn't_ a point with
    ⎜ an _absence_ between it and zero.

    ⎜ It is the latter which holds for
    ⎝ the gapless real line.

    Consider the real line.
    For any two points x and y,
    (x+y)/2 is between x and y.
    x and y are not next to each other.

    There are no two points such that
    (x+y)/2 is NOT between x and y.
    There are no two points next to each other.

    or there is no point next to zero,
    that means there is nothing, i.e., a gap.

    If there is nothing (no points) between 0 and x
    then there IS a point next to 0: x

    Consider again ABCDEFGHIJKLMNOPQRSTUVWXYZ
    and being.next.to and having.a.gap.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Thu Sep 19 15:15:27 2024
    On 9/19/2024 9:02 AM, WM wrote:
    On 19.09.2024 13:44, Richard Damon wrote:
    On 9/19/24 7:22 AM, WM wrote:

    There are infinitely many points with no extension
    filling the space.

    Right,
    and none "next" to another, because
    there is always another in between them.

    "always another" is potential infinity.

    For each finite ordinal ξ,
    always another finite ordinal ξ∪{ξ} > ξ exists.

    The set ω of all and only finite ordinals
    holds all and only finite ordinals.

    I am discussing actual infinity
    where all are there at once and no "always" is used.

    Your actual.infinityᵂᴹ
    doesn't contain a subset which is non.2.ended but
    contains a subset of a subset which is non.2.ended.
    Which is gibberish.

    But it's 'no.always' gibberish. So, you win, I guess?

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Thu Sep 19 23:13:29 2024
    Am 19.09.2024 um 21:13 schrieb Chris M. Thomasson:
    On 9/19/2024 5:55 AM, WM wrote:
    On 18.09.2024 22:49, Moebius wrote:
    Am 18.09.2024 um 21:35 schrieb Chris M. Thomasson:
    On 9/18/2024 5:44 AM, WM wrote:
    On 16.09.2024 03:16, Richard Damon wrote:
    On 9/15/24 3:39 PM, WM wrote:
    On 15.09.2024 18:38, Ben Bacarisse wrote:

    It might be worth pointing out that any non-trivial interval [a, >>>>>>>> b] on
    the real line (i.e. with b > a) contains an uncountable number of >>>>>>>> points.

    That proves that small intervals cannot be defined (they are dark). >>>>>>
    But arbitrary small intervals CAN be defined.

    For any eps e IR, eps > 0: [0, eps] is an interval (@WM: you see, I just defined it) of length eps and it countains an uncountable number of
    points. Hint: eps may be arbitrarily small, as long as it is > 0.

    Try to name one that can't.

    Define an interval comprising 9182024 points, starting at zero.

    There IS NO "interval comprising 9182024 points", hence NOTHING TO
    DEFINE HERE, you fucking asshole full of shit.

    How can infinitely many points be accumulated without a first one?

    @WM: There's no need for them "to be accumulated" (whatever this may
    mean), you fucking asshole full of shit.

    The real line is infinitely long

    WM is talking about some interval of finite length here, it seems.

    and infinitely dense, or granular if you will...

    Sorta.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Fri Sep 20 01:27:25 2024
    Am 19.09.2024 um 23:27 schrieb Chris M. Thomasson:

    Then the reals that are infinitely dense. They are uncountable because
    they are so dense.

    Indeed! Even "denser" than the the rational numbers (which are countable).

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Thu Sep 19 23:37:13 2024
    On 9/19/24 9:06 AM, WM wrote:
    On 19.09.2024 14:38, joes wrote:
    Am Thu, 19 Sep 2024 13:22:45 +0200 schrieb WM:

    There are infinitely many points with no extension filling the space.
    Yes, and they are not neighbours.

    Either they are next to each other ot somethig else is in between.

    Right, becuase the set is INFINITE.


    the space is filled by more points, creating smaller and smaller gaps
    That is potential infinity. In actual infinity all points are there at
    once.
    They are there.

    But cannot be found. For instance the smallest positive point.

    But are There, and can be found. Give me any finite points, that
    actually exists, and I can show points in between.


    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Thu Sep 19 23:35:16 2024
    On 9/19/24 9:02 AM, WM wrote:
    On 19.09.2024 13:44, Richard Damon wrote:
    On 9/19/24 7:22 AM, WM wrote:
    On 19.09.2024 00:50, Richard Damon wrote:
    On 9/18/24 8:33 AM, WM wrote:
    On 15.09.2024 23:07, joes wrote:
    Am Sun, 15 Sep 2024 21:52:30 +0200 schrieb WM:

    No definable points, to be precise. If there is no point next to >>>>>>> 0 then
    there is a gap. I do not accept gaps on the real line.
    I.e. „neighbouring” points can’t be defined. There are no gaps. >>>>>
    So it is.These points are dark.

    Nope, they just aren't.

    To be distinct points, there must be a gap, so they can not be
    neighboring,

    There are infinitely many points with no extension filling the space.

    Right, and none "next" to another, because there is always another in
    between them.

    "always another" is potential infinity. I am discussing actual infinity
    where all are there at once and no "always" is used.

    So, then how do you describe that fact that there IS always another.

    Sounds like your "Actual Infinity" isn't actually infinte.






    the space is filled by more points, creating smaller and smaller gaps

    That is potential infinity. In actual infinity all points are there
    at once.

    No, that is what infinity actually is. There are not two different
    "kinds" of it. All the point do exist, and we can express any of them.

    Then you need no "always" but can point directly to the first point next
    to another.

    But there never is such a point unless you don't actually have all of them.



    The Infinite Set of these values actually exists, and all the values
    are in it,

    that includes the first point of the interval and the second and so on.

    Which don't exist unless your "infinite" is just too small and is only
    finite.

    Sorry, you are just proving you are judt a stupid liar that doesn't
    understand what infinity actually is.


    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Thu Sep 19 23:39:01 2024
    On 9/19/24 8:55 AM, WM wrote:
    On 18.09.2024 22:49, Moebius wrote:
    Am 18.09.2024 um 21:35 schrieb Chris M. Thomasson:
    On 9/18/2024 5:44 AM, WM wrote:
    On 16.09.2024 03:16, Richard Damon wrote:
    On 9/15/24 3:39 PM, WM wrote:
    On 15.09.2024 18:38, Ben Bacarisse wrote:

    It might be worth pointing out that any non-trivial interval [a, >>>>>>> b] on
    the real line (i.e. with b > a) contains an uncountable number of >>>>>>> points.

    That proves that small intervals cannot be defined (they are dark). >>>>>
    But arbitrary small intervals CAN be defined.

    Try to name one that can't.

    Define an interval comprising 9182024 points, starting at zero.

    There IS NO "interval comprising 9182024 points", hence NOTHING TO
    DEFINE HERE,

    How can infinitely many points be accumulated without a first one? This belief proves that matheology is mistaken.

    Regards, WM




    How can you have infinity many unit fractions if there IS a smallest
    one. From that smallest one, take its reciprical, and that tells you how
    many unit fractions you have.

    Sorry, you are just proving that you logic has exploded your brain into smithereens.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to Ross Finlayson on Fri Sep 20 13:51:38 2024
    On 9/19/2024 12:29 AM, Ross Finlayson wrote:
    On 09/18/2024 01:51 PM, Ross Finlayson wrote:
    On 09/18/2024 12:37 PM, Chris M. Thomasson wrote:

    [...]

    Put pencil to paper and draw a straight line,
    each of the points were encountered in order.
    No matter how fine it's sliced, ....

    Sometimes called "Hilbert's Postulate of Continuity".
    Which he says is required, ....

    Put pencil to paper and draw two curves which cross.
    There is a point at which the curves intersect.

    That is the Intermediate Value Theorem,
    which can prove and from which can be proved
    the Least Upper Bound Property.
    That is what.we.mean.by line.

    ⎛ The line ℝ includes rationals ℚ

    ⎜ For each split S of ℚ,
    ⎜ if there isn't a rational qₛ at S
    ⎜ then there is an irrational rₛ at S

    ⎜ Each rational and irrational is at a split.

    ⎛ ℝ z ℚ

    ⎜ ∀S ⊆ ℚ: {} ≠ S ᵉᵃᶜʰ<ᵉᵃᶜʰ ℚ\S ≠ {} ⇒
    ⎜⎛ ¬∃qₛ ∈ ℚ: S ᵉᵃᶜʰ≤ qₛ ≤ᵉᵃᶜʰ ℚ\S ⇒ ⎜⎝ ∃rₛ ∈ ∁ℚ: S ᵉᵃᶜʰ< rₛ <ᵉᵃᶜʰ ℚ\S

    ⎜ ℝ = ℚ ∪ ∁ℚ

    ⎜ ∀r ∈ ℝ: ∃Sᵣ ⊆ Q:
    ⎝ {} ≠ Sᵣ ᵉᵃᶜʰ< r ≤ᵉᵃᶜʰ ℚ\Sᵣ ≠ {}

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Fri Sep 20 20:13:55 2024
    On 20.09.2024 05:35, Richard Damon wrote:
    On 9/19/24 9:02 AM, WM wrote:

    "always another" is potential infinity. I am discussing actual
    infinity where all are there at once and no "always" is used.

    So, then how do you describe that fact that there IS always another.

    The reason is that only a potentially infinite collection of elements
    can be utilzed.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Fri Sep 20 20:09:21 2024
    On 20.09.2024 05:39, Richard Damon wrote:
    On 9/19/24 8:55 AM, WM wrote:

    How can infinitely many points be accumulated without a first one?
    This belief proves that matheology is mistaken.

    How can you have infinity many unit fractions if there IS a smallest
    one.

    That is accomplished by dark numbers. Look, the interval [0, 1] has a
    smallest point and nevetheless infinitely many points.

    From that smallest one, take its reciprical, and that tells you how
    many unit fractions you have.

    Dark numbers don't tell anything.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Fri Sep 20 20:10:45 2024
    On 20.09.2024 19:51, Jim Burns wrote:

    Put pencil to paper and draw two curves which cross.
    There is a point at which the curves intersect.

    This proves that no line has gaps.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Fri Sep 20 20:27:32 2024
    On 19.09.2024 21:15, Jim Burns wrote:
    On 9/19/2024 9:02 AM, WM wrote:
    On 19.09.2024 13:44, Richard Damon wrote:
    On 9/19/24 7:22 AM, WM wrote:

    There are infinitely many points with no extension
    filling the space.

    Right,
    and none "next" to another, because
    there is always another in between them.

    "always another" is potential infinity.

    For each finite ordinal ξ,
    always another finite ordinal ξ∪{ξ} > ξ exists.

    Potential infinity.

    The set ω of all and only finite ordinals
    holds all and only finite ordinals.

    And there is no gap before ω.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Moebius on Fri Sep 20 20:33:39 2024
    On 19.09.2024 23:13, Moebius wrote:
    Am 19.09.2024 um 21:13 schrieb Chris M. Thomasson:
    On 9/19/2024 5:55 AM, WM wrote:

    How can infinitely many points be accumulated without a first one?

    @WM: There's no need for them "to be accumulated"


    How can 10 points exist in linear order without a first one?

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Fri Sep 20 19:02:07 2024
    Am Fri, 20 Sep 2024 20:27:32 +0200 schrieb WM:
    On 19.09.2024 21:15, Jim Burns wrote:
    On 9/19/2024 9:02 AM, WM wrote:
    On 19.09.2024 13:44, Richard Damon wrote:
    On 9/19/24 7:22 AM, WM wrote:

    There are infinitely many points with no extension filling the
    space.
    Right,
    and none "next" to another, because there is always another in
    between them.
    "always another" is potential infinity.
    For each finite ordinal ξ,
    always another finite ordinal ξ∪{ξ} > ξ exists.
    Potential infinity.
    The other ordinal exists regardless.

    The set ω of all and only finite ordinals holds all and only finite
    ordinals.
    And there is no gap before ω.
    There is an infinite gap, if you will.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Fri Sep 20 20:24:14 2024
    On 19.09.2024 20:31, Jim Burns wrote:
    On 9/19/2024 6:38 AM, WM wrote:

    Either there is a point next to zero
    or there is no point next to zero,

    Consider ABCDEFGHIJKLMNOPQRSTUVWXYZ

    Q is between A and Z
    A and Z are not next to each other.

    Nothing is between P and Q
    P and Q are next to each other.

    ⎛ There is a gap between P and Q

    No.

    ⎜ A gap isn't some _presence_
    ⎜ A gap is an _absence_ of whatever.

    A gap in the real line is the absence of points.

    Consider the real line.
    For any two points x and y,
    (x+y)/2 is between x and y.
    x and y are not next to each other.

    That is true for definable points only.

    Regards, WM


    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Fri Sep 20 15:26:54 2024
    On 9/20/2024 2:10 PM, WM wrote:
    On 20.09.2024 19:51, Jim Burns wrote:

    Put pencil to paper and draw two curves which cross.
    There is a point at which the curves intersect.

    This proves that no line has gaps.

    A point (hypothetically) next to 0
    has an absence of points between it and 0

    No such absence of points exists.
    No point which is next to 0 exists.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Fri Sep 20 15:31:34 2024
    On 9/20/2024 2:09 PM, WM wrote:
    On 20.09.2024 05:39, Richard Damon wrote:

    From that smallest one,
    take its reciprical, and that tells you
    how many unit fractions you have.

    Dark numbers don't tell anything.

    Positive lower bounds of definable unit fractions
    require impossibilities.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Fri Sep 20 15:51:01 2024
    On 9/20/2024 2:24 PM, WM wrote:
    On 19.09.2024 20:31, Jim Burns wrote:
    On 9/19/2024 6:38 AM, WM wrote:

    Either there is a point next to zero
    or there is no point next to zero,

    Consider ABCDEFGHIJKLMNOPQRSTUVWXYZ

    Q is between A and Z
    A and Z are not next to each other.

    Nothing is between P and Q
    P and Q are next to each other.

    ⎛ There is a gap between P and Q

    No.

    There is no letter between P and Q
    in ABCDEFGHIJKLMNOPQRSTUVWXYZ

    There is an absence of letters between P and Q
    in ABCDEFGHIJKLMNOPQRSTUVWXYZ

    There is a gap between P and Q
    in ABCDEFGHIJKLMNOPQRSTUVWXYZ

    ⎜ A gap isn't some _presence_
    ⎜ A gap is an _absence_ of whatever.

    A gap in the real line is the absence of points.

    A gap between 0 and x is
    the absence of points between 0 and x

    No point x exists for which
    there is an absence of points between 0 and x

    Consider the real line.
    For any two points x and y,
    (x+y)/2 is between x and y.
    x and y are not next to each other.

    That is true for definable points only.

    For points u and v at splits Sᵤ and Sᵥ of ℚ
    point (u+v)/2 is between u and v.
    u and v are not next to each other.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Fri Sep 20 16:02:52 2024
    On 9/20/2024 2:27 PM, WM wrote:
    On 19.09.2024 21:15, Jim Burns wrote:
    On 9/19/2024 9:02 AM, WM wrote:
    On 19.09.2024 13:44, Richard Damon wrote:
    On 9/19/24 7:22 AM, WM wrote:

    There are infinitely many points with no extension
    filling the space.

    Right,
    and none "next" to another, because
    there is always another in between them.

    "always another" is potential infinity.

    For each finite ordinal ξ,
    always another finite ordinal ξ∪{ξ} > ξ exists.

    Potential infinity.

    ξ ⟼ ξ∪{ξ}
    is one.to.one
    from finite ordinals
    to (proper subset) nonzero finite ordinals

    The set ω of all and only finite ordinals
    holds all and only finite ordinals.

    And there is no gap before ω.

    ω-1 requires impossibilities:
    a gap between ω and (hypothetical) ω-1

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Fri Sep 20 17:37:18 2024
    On 9/20/2024 2:13 PM, WM wrote:
    On 20.09.2024 05:35, Richard Damon wrote:
    On 9/19/24 9:02 AM, WM wrote:

    "always another" is potential infinity.
    I am discussing actual infinity
    where all are there at once
    and no "always" is used.

    So, then how do you describe that fact that
    there IS always another.

    The reason is that only
    a potentially infinite collection of elements
    can be utilzed.

    A finite.length claim can true about
    each of arbitrarily.many elements.
    ⎛ How many right triangles is
    ⎜ "It is a right triangle" true about?
    ⎝ All of them, utilized or not.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Fri Sep 20 19:06:13 2024
    On 9/20/24 2:33 PM, WM wrote:
    On 19.09.2024 23:13, Moebius wrote:
    Am 19.09.2024 um 21:13 schrieb Chris M. Thomasson:
    On 9/19/2024 5:55 AM, WM wrote:

    How can infinitely many points be accumulated without a first one?

    @WM: There's no need for them "to be accumulated"


    How can 10 points exist in linear order without a first one?

    Regards, WM

    Who says they can't.

    Its just when they become infinite that there might be ends that don't
    exist.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Fri Sep 20 19:04:58 2024
    On 9/20/24 2:13 PM, WM wrote:
    On 20.09.2024 05:35, Richard Damon wrote:
    On 9/19/24 9:02 AM, WM wrote:

    "always another" is potential infinity. I am discussing actual
    infinity where all are there at once and no "always" is used.

    So, then how do you describe that fact that there IS always another.

    The reason is that only a potentially infinite collection of elements
    can be utilzed.

    Regards, WM

    But what keeps you from actually utilizing any of them?

    The limitation of "potential" is just in your head.

    And your "Actual Infinity" doesn't seem to actually be infinite.

    So, you seem to just have a problem with your definitions,

    Maybe you think it is only "potentially" infinite, as with finite work
    you can only name part of them, but you think you can name all of your
    "Actual Infinity", which just shows that it isn't actually infinite.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Fri Sep 20 19:08:09 2024
    On 9/20/24 2:09 PM, WM wrote:
    On 20.09.2024 05:39, Richard Damon wrote:
    On 9/19/24 8:55 AM, WM wrote:

    How can infinitely many points be accumulated without a first one?
    This belief proves that matheology is mistaken.

    How can you have infinity many unit fractions if there IS a smallest one.

    That is accomplished by dark numbers. Look, the interval [0, 1] has a smallest point and nevetheless infinitely many points.

    But why do they need to become dark, when all of them can be fully defined.

    You just make up the contraditory concept of "dark nukbers" to hide the
    fact that you logic is just inconsistant when trying to deal with them.


    From that smallest one, take its reciprical, and that tells you how
    many unit fractions you have.

    Dark numbers don't tell anything.

    Because they don't actually exist.


    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Sat Sep 21 03:03:59 2024
    Am 21.09.2024 um 01:23 schrieb Chris M. Thomasson:
    On 9/19/2024 2:13 PM, Moebius wrote:
    Am 19.09.2024 um 21:13 schrieb Chris M. Thomasson:
    On 9/19/2024 5:55 AM, WM wrote:
    On 18.09.2024 22:49, Moebius wrote:
    Am 18.09.2024 um 21:35 schrieb Chris M. Thomasson:
    On 9/18/2024 5:44 AM, WM wrote:
    On 16.09.2024 03:16, Richard Damon wrote:
    On 9/15/24 3:39 PM, WM wrote:
    On 15.09.2024 18:38, Ben Bacarisse wrote:

    It might be worth pointing out that any non-trivial interval >>>>>>>>>> [a, b] on
    the real line (i.e. with b > a) contains an uncountable number of >>>>>>>>>> points.

    That proves that small intervals cannot be defined (they are >>>>>>>>> dark).

    But arbitrary small intervals CAN be defined.

    For any eps e IR, eps > 0: [0, eps] is an interval (@WM: you see, I
    just defined it) of length eps and it countains an uncountable number
    of points. Hint: eps may be arbitrarily small, as long as it is > 0.

    Try to name one that can't.

    Define an interval comprising 9182024 points, starting at zero.

    There IS NO "interval comprising 9182024 points", hence NOTHING TO
    DEFINE HERE, you fucking asshole full of shit.

    How can infinitely many points be accumulated without a first one?

    @WM: There's no need for them "to be accumulated" (whatever this may
    mean), you fucking asshole full of shit.

    The real line is infinitely long

    WM is talking about some interval of finite length here, it seems.

    and infinitely dense, or granular if you will...

    Sorta.

    Well, its infinitely long...

    ...(-1)------(0)--------(+1)...


    It has no end just like there is no end to the signed integers. Also,
    its infinitely dense due to the nature of the reals.

    ?

    Yes.

    Here's a mind bending fact concerning the reals and rational numbers.

    Between any two real numbers there is a rational number and between any
    two rational number there is a real number. But there are only countably
    many rational numbers while there are uncountably many real numbers. :-)

    Math lingo: "The rationals are dense in the reals". :-)

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Sat Sep 21 15:43:20 2024
    On 20.09.2024 21:26, Jim Burns wrote:
    On 9/20/2024 2:10 PM, WM wrote:
    On 20.09.2024 19:51, Jim Burns wrote:

    Put pencil to paper and draw two curves which cross.
    There is a point at which the curves intersect.

    This proves that no line has gaps.

    A point (hypothetically) next to 0
    has an absence of points between it and 0

    No such absence of points exists.

    You cannot see the point because it is dark.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Sat Sep 21 15:47:21 2024
    On 20.09.2024 22:02, Jim Burns wrote:
    On 9/20/2024 2:27 PM, WM wrote:

    And there is no gap before ω.

    ω-1 requires impossibilities:
    a gap between ω and (hypothetical) ω-1

    No. A gap is where something could be but is not.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to joes on Sat Sep 21 15:41:08 2024
    On 20.09.2024 21:02, joes wrote:
    Am Fri, 20 Sep 2024 20:27:32 +0200 schrieb WM:

    The set ω of all and only finite ordinals holds all and only finite
    ordinals.
    And there is no gap before ω.
    There is an infinite gap, if you will.

    No, I won't. What you call a gap is filled with numbers nobody can see -
    dark numbers.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Sat Sep 21 15:57:41 2024
    On 21.09.2024 01:06, Richard Damon wrote:
    On 9/20/24 2:33 PM, WM wrote:

    How can 10 points exist in linear order without a first one?

    Who says they can't.

    In order to count to 10, you have to start at 1.

    Its just when they become infinite that there might be ends that don't
    exist.

    In order to count a countable set, you have to start at 1.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Sat Sep 21 13:26:10 2024
    On 9/21/2024 9:47 AM, WM wrote:
    On 20.09.2024 22:02, Jim Burns wrote:
    On 9/20/2024 2:27 PM, WM wrote:

    And there is no gap before ω.

    ω-1 requires impossibilities:
    a gap between ω and (hypothetical) ω-1

    No.
    A gap is where something could be
    but is not.

    Gaps are where you locate your darkᵂᴹ numbers.
    ⎛ Thus
    ⎜ it is no accident that
    ⎜ each darkᵂᴹ number is and is not.

    ⎜ Darkᵂᴹ numbers provide you Potemkin.facts
    ⎜ that mere numbers cannot.
    ⎜ Nothing is true, everything is true,
    ⎜ LOL nothing matters.

    ⎜ 🛇 Ordinals are well.ordered.
    ⎜ 🛇 Except for darkᵂᴹ ordinals.
    ⎝ 🛇 In the gap.

    However,
    'things always well.ordered' is
    what we mean by 'ordinals'.

    Whatever you say about
    "things only sometimes well.ordered'
    you are not saying about
    WWMB (what we mean by) ordinals.

    There are no non.well.ordered WWMB ordinals.

    There is no finite WWMB ordinal α not.before
    the first transfinite ordinal, WWMB ω

    There is no finite WWMB ordinal α without
    its WWMB successor α+1 before ω

    There is no transfinite WWMB ordinal ξ before
    the first transfinite ordinal, WWMB ω

    There is no WWMB ordinal ω-1
    no finite α, no transfinite ξ.

    And there is no gap before ω.

    A gap is where something could be
    but is not.

    There is no WWMB ordinal before ω
    which could be but is not.
    In that sense, there is no gap.

    There is no WWMB ω-1

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Sat Sep 21 14:16:08 2024
    On 9/21/2024 9:43 AM, WM wrote:
    On 20.09.2024 21:26, Jim Burns wrote:
    On 9/20/2024 2:10 PM, WM wrote:
    On 20.09.2024 19:51, Jim Burns wrote:

    Put pencil to paper and draw two curves which cross.
    There is a point at which the curves intersect.

    This proves that no line has gaps.

    A point (hypothetically) next to 0
    has an absence of points between it and 0

    No such absence of points exists.

    You cannot see the point because it is dark.

    WWMB (what we mean by) ℝ\ℚ completes WWMB ℚ

    ⎛ Each split of WWMB ℚ not situated by
    ⎜ a point of WWMB ℚ
    ⎜ is situated by a point of WWMB ℝ\ℚ

    ⎜ ∀S ⊆ ℚ:
    ⎜⎛ {} ≠ S ᵉᵃᶜʰ<ᵉᵃᶜʰ ℚ\S ≠ {} ∧
    ⎜⎝ ¬∃q ∈ ℚ: S ᵉᵃᶜʰ≤ q ≤ᵉᵃᶜʰ ℚ\S
    ⎝ ⇒ ∃r ∈ ℝ\ℚ: S ᵉᵃᶜʰ< r <ᵉᵃᶜʰ ℚ\S

    WWMB ℝ no.more.than.completes WWMB ℚ

    ⎛ Each point of WWMB ℝ ⊇ ℚ situates
    ⎜ a split of WWMB ℚ

    ⎜ ∀r ∈ ℝ:
    ⎝ ∃S ⊆ ℚ: S ᵉᵃᶜʰ≤ r ≤ᵉᵃᶜʰ ℚ\S

    If what you say isn't about WWMB ℝ and ℚ,
    then what you say isn't about WWMB ℝ and ℚ.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Sat Sep 21 22:02:29 2024
    On 21.09.2024 01:04, Richard Damon wrote:
    On 9/20/24 2:13 PM, WM wrote:
    On 20.09.2024 05:35, Richard Damon wrote:
    On 9/19/24 9:02 AM, WM wrote:

    "always another" is potential infinity. I am discussing actual
    infinity where all are there at once and no "always" is used.

    So, then how do you describe that fact that there IS always another.

    The reason is that only a potentially infinite collection of
    elements can be utilzed.

    But what keeps you from actually utilizing any of them?

    The fact that every used number belongs to a finite initial segment upon
    which almost all numbers are following.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Sat Sep 21 22:01:43 2024
    On 20.09.2024 21:51, Jim Burns wrote:
    On 9/20/2024 2:24 PM, WM wrote:
    On 19.09.2024 20:31, Jim Burns wrote:
    On 9/19/2024 6:38 AM, WM wrote:

    Either there is a point next to zero
    or there is no point next to zero,

    Consider ABCDEFGHIJKLMNOPQRSTUVWXYZ

    Q is between A and Z
    A and Z are not next to each other.

    Nothing is between P and Q
    P and Q are next to each other.

    ⎛ There is a gap between P and Q

    No.

    There is no letter between P and Q
    in ABCDEFGHIJKLMNOPQRSTUVWXYZ

    There is an absence of letters between P and Q
    in ABCDEFGHIJKLMNOPQRSTUVWXYZ

    No, there is nothing. An absence requires a space which could be
    occupied by the absent.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Sat Sep 21 22:11:21 2024
    On 21.09.2024 19:26, Jim Burns wrote:
    On 9/21/2024 9:47 AM, WM wrote:
    On 20.09.2024 22:02, Jim Burns wrote:
    On 9/20/2024 2:27 PM, WM wrote:

    And there is no gap before ω.

    ω-1 requires impossibilities:
    a gap between ω and (hypothetical) ω-1

    No.
    A gap is where something could be
    but is not.

    Gaps are where you locate your darkᵂᴹ numbers.

    Yes.
    However,
    'things always well.ordered' is
    what we mean by 'ordinals'.

    That is a potentially infinite collection.
    There are no non.well.ordered WWMB ordinals.

    That may be.

    There is no finite WWMB ordinal α not.before
    the first transfinite ordinal, WWMB ω

    There is no finite WWMB ordinal α without
    its WWMB successor α+1 before ω

    There is no transfinite WWMB ordinal ξ before
    the first transfinite ordinal, WWMB ω

    That may be. But then there is no complete set of natural numbers and no ω.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Sat Sep 21 18:32:33 2024
    On 9/21/2024 4:11 PM, WM wrote:
    On 21.09.2024 19:26, Jim Burns wrote:
    On 9/21/2024 9:47 AM, WM wrote:
    On 20.09.2024 22:02, Jim Burns wrote:
    On 9/20/2024 2:27 PM, WM wrote:

    And there is no gap before ω.

    ω-1 requires impossibilities:
    a gap between ω and (hypothetical) ω-1

    No.
    A gap is where something could be
    but is not.

    Gaps are where you locate your darkᵂᴹ numbers.

    Yes.

    However,
    'things always well.ordered' is
    what we mean by 'ordinals'.

    That is a potentially infinite collection.

    If α is a finite ordinal, then α ∈ WWMB ω
    If α isn't a finite ordinal, then α ∉ WWMB ω
    WWMB "what we mean by"

    By extensionality,
    no other facts about WWMB ω exist.

    There are no non.well.ordered WWMB ordinals.

    That may be.

    That is what we mean.

    There is no finite WWMB ordinal α not.before
    the first transfinite ordinal, WWMB ω

    There is no finite WWMB ordinal α without
    its WWMB successor α+1 before ω

    There is no transfinite WWMB ordinal ξ before
    the first transfinite ordinal, WWMB ω

    That may be. But then
    there is no complete set of natural numbers
    and no ω.

    WWMB ω is the first transfinite ordinal.
    Existing or not.existing, WWMB ω isn't
    anything other than the first transfinite ordinal.

    As long as it's WWMB ω which you discuss,
    WWMB ω-1 doesn't exist.

    there is no complete set of natural numbers

    If we discuss Boolos's theory ST
    ⎛ ∃{}
    ⎜ ∃z=x∪{y}
    ⎝ extensionality
    then
    each of WWMB the natural numbers exist.
    Showing that involves _saying_
    in the language of ST, what that _means_
    which we can do and I have done before, here.

    If we accept plural.quantification
    ⎛ ∃∃{y:P(y)}
    ⎜ ∀x: x∈{y:P(y)} ⇔ P(x)
    ⎝ plural.extensionality
    then
    a predicate ℕ(y) "y is WWMB a natural number" exists
    in the language of ST
    and thus
    the plurality {y:ℕ(y)} exists, of
    all and only the natural numbers.

    If we accept that, ω={y:ℕ(y)} and exists

    OTOH, You could deny {} or x∪{y} or {y:P(y)}
    and your denial would not be _illogical_

    However, if you did, it would be a bad fit with
    your argument that
    darkᵂᴹ.number.deniers are matheological fanatics,
    blind to "common sense".

    {} not.exists?
    x∪{y} not.exists?
    {y:P(y)} not.exists?
    But _we're_ the fanatics.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Sat Sep 21 19:25:37 2024
    On 9/21/24 9:57 AM, WM wrote:
    On 21.09.2024 01:06, Richard Damon wrote:
    On 9/20/24 2:33 PM, WM wrote:

    How can 10 points exist in linear order without a first one?

    Who says they can't.

    In order to count to 10, you have to start at 1.

    Its just when they become infinite that there might be ends that don't
    exist.

    In order to count a countable set, you have to start at 1.

    Regards, WM


    Right, so the countable numbers have ONE end that can be used to count from.

    You can count UP to infinity by counting up.

    You can't count DOWN from infinity, as there is no place to start.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Sat Sep 21 19:24:22 2024
    On 9/21/24 4:02 PM, WM wrote:
    On 21.09.2024 01:04, Richard Damon wrote:
    On 9/20/24 2:13 PM, WM wrote:
    On 20.09.2024 05:35, Richard Damon wrote:
    On 9/19/24 9:02 AM, WM wrote:

    "always another" is potential infinity. I am discussing actual
    infinity where all are there at once and no "always" is used.

    So, then how do you describe that fact that there IS always another.

    The reason is that only a potentially infinite collection of
    elements can be utilzed.

    But what keeps you from actually utilizing any of them?

    The fact that every used number belongs to a finite initial segment upon which almost all numbers are following.

    Regards, WM

    So, we can just choose the finite initial segment that includes that
    number, and thus can use it,

    What keeps us from doing that?

    We can do it to ANY of the the numbers, thus they are all usable.

    To do it to ALL the numbers, requires infinite work, but that is also ok
    in a logic that allows for real infinite sets.

    Sorry, your logic has just exploded your mind by its contradictions
    cause by being pushed beyond its finite capabilities, which makes your "actually infinite" set not actually infinite, so just a contradiction.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Sun Sep 22 03:03:26 2024
    Am 22.09.2024 um 01:48 schrieb Chris M. Thomasson:

    [...] so the countable numbers have ONE end that can be used to count
    from. [RD]

    Nope. The integers, for example, don't have "an end".

    What about the signed integers?

    In math there are no "unsigned" integers, only in progamming lanuages. :-)

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Sun Sep 22 15:22:57 2024
    On 22.09.2024 00:32, Jim Burns wrote:
    On 9/21/2024 4:11 PM, WM wrote:

    There is no transfinite WWMB ordinal ξ before
    the first transfinite ordinal, WWMB ω

    That may be. But then
    there is no complete set of natural numbers
    and no ω.

    WWMB ω is the first transfinite ordinal.
    Existing or not.existing, WWMB ω isn't
    anything other than the first transfinite ordinal.

    As long as it's WWMB ω which you discuss,
    WWMB ω-1 doesn't exist.

    Then ω does not exist.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Sun Sep 22 15:27:01 2024
    On 22.09.2024 01:24, Richard Damon wrote:
    On 9/21/24 4:02 PM, WM wrote:
    On 21.09.2024 01:04, Richard Damon wrote:
    On 9/20/24 2:13 PM, WM wrote:
    On 20.09.2024 05:35, Richard Damon wrote:
    On 9/19/24 9:02 AM, WM wrote:
    ;
    "always another" is potential infinity. I am discussing actual
    infinity where all are there at once and no "always" is used.
    ;
    So, then how do you describe that fact that there IS always another. >>  >>
    The reason is that only a potentially infinite collection of
    elements can be utilzed.
    ;
    But what keeps you from actually utilizing any of them?

    The fact that every used number belongs to a finite initial segment
    upon which almost all numbers are following.

    So, we can just choose the finite initial segment that includes that
    number, and thus can use it,

    But you cannot choose the infinite rest.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Sun Sep 22 15:28:38 2024
    On 22.09.2024 01:25, Richard Damon wrote:
    On 9/21/24 9:57 AM, WM wrote:
    On 21.09.2024 01:06, Richard Damon wrote:
    On 9/20/24 2:33 PM, WM wrote:

    How can 10 points exist in linear order without a first one?

    Who says they can't.

    In order to count to 10, you have to start at 1.

    Its just when they become infinite that there might be ends that
    don't exist.

    In order to count a countable set, you have to start at 1.

    Right, so the countable numbers have ONE end that can be used to count
    from.

    Really existing sets of real unit fractions have two ends.

    You can count UP to infinity by counting up.

    You can't count DOWN from infinity, as there is no place to start.

    The places are there but they are dark.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Sun Sep 22 14:20:18 2024
    Am Sat, 21 Sep 2024 15:47:21 +0200 schrieb WM:
    On 20.09.2024 22:02, Jim Burns wrote:
    On 9/20/2024 2:27 PM, WM wrote:

    And there is no gap before ω.
    ω-1 requires impossibilities:
    a gap between ω and (hypothetical) ω-1
    No. A gap is where something could be but is not.
    This is too easy. ω is defined such that there is no gap.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Sun Sep 22 14:18:44 2024
    Am Sun, 22 Sep 2024 15:27:01 +0200 schrieb WM:
    On 22.09.2024 01:24, Richard Damon wrote:
    On 9/21/24 4:02 PM, WM wrote:
    On 21.09.2024 01:04, Richard Damon wrote:
    On 9/20/24 2:13 PM, WM wrote:
    On 20.09.2024 05:35, Richard Damon wrote:
    On 9/19/24 9:02 AM, WM wrote:
    ;
    "always another" is potential infinity. I am discussing actual
    infinity where all are there at once and no "always" is used.
    So you can’t make general statements?

    So, then how do you describe that fact that there IS always
    another.
    The reason is that only a potentially infinite collection of
    elements can be utilzed.
    I don’t care, infinite is infinite.
    But what keeps you from actually utilizing any of them?
    The fact that every used number belongs to a finite initial segment
    upon which almost all numbers are following.
    Why are you talking about „potential infinity”?
    So, we can just choose the finite initial segment that includes that
    number, and thus can use it,
    But you cannot choose the infinite rest.
    Of course you can.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to joes on Sun Sep 22 17:36:20 2024
    On 22.09.2024 16:18, joes wrote:
    Am Sun, 22 Sep 2024 15:27:01 +0200 schrieb WM:

    So, we can just choose the finite initial segment that includes that
    number, and thus can use it,
    But you cannot choose the infinite rest.
    Of course you can.

    No, I cannot. But if you can, please show it. Choose a number having
    more predecessors than successors.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Sun Sep 22 12:46:30 2024
    On 9/22/2024 9:22 AM, WM wrote:
    On 22.09.2024 00:32, Jim Burns wrote:
    On 9/21/2024 4:11 PM, WM wrote:
    On 21.09.2024 19:26, Jim Burns wrote:

    There is no transfinite WWMB ordinal ξ before
    the first transfinite ordinal, WWMB ω

    That may be. But then
    there is no complete set of natural numbers
    and no ω.

    WWMB ω is the first transfinite ordinal.
    Existing or not.existing, WWMB ω isn't
    anything other than the first transfinite ordinal.

    As long as it's WWMB ω which you discuss,
    WWMB ω-1 doesn't exist.

    Then ω does not exist.

    If
    we are discussing
    Boolos's ST with plural quantification,
    ⎛ ∃{}
    ⎜ ∃z=x∪{y}
    ⎝ ∀.extensionality
    ⎛ ∃∃⦃y:P(y)⦄
    ⎜ ∀x: x ∈ ⦃y:P(y)⦄ ⇔ P(x)
    ⎝ ∀∀.extensionality
    then
    there is WWMB ω = ⦃y:ℕ(y)⦄ and
    there isn't WWMB ω-1 such that (ω-1)+1 = ω

    Which of {} x∪{y} ⦃y:P(y)⦄
    do you deny exists?

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Sun Sep 22 13:44:37 2024
    On 9/21/2024 4:01 PM, WM wrote:
    On 20.09.2024 21:51, Jim Burns wrote:
    On 9/20/2024 2:24 PM, WM wrote:
    On 19.09.2024 20:31, Jim Burns wrote:
    On 9/19/2024 6:38 AM, WM wrote:

    Either there is a point next to zero
    or there is no point next to zero,

    Consider ABCDEFGHIJKLMNOPQRSTUVWXYZ

    Q is between A and Z
    A and Z are not next to each other.

    Nothing is between P and Q
    P and Q are next to each other.

    ⎛ There is a gap between P and Q

    No.

    There is no letter between P and Q
    in ABCDEFGHIJKLMNOPQRSTUVWXYZ

    There is an absence of
    letters between P and Q
    in ABCDEFGHIJKLMNOPQRSTUVWXYZ

    No, there is nothing.
    An absence requires a space which
    could be occupied by the absent.

    Either there is a point next to zero
    or there is no point next to zero,

    For each non.0 point,
    there is a space between it and 0
    For each non.0 point,
    that space is occupied by other points.

    There is no point next to 0.

    ⎛ Assume otherwise.
    ⎜ Assume δ is next to 0
    ⎜ 0 < δ ∧ ¬∃ᴿr: 0 < r < δ

    ⎜ Consider the unit.fractions ⅟ℕᵈᵉᶠ
    ⎜ Note that
    ⎜ ∀⅟k ∈ ⅟ℕᵈᵉᶠ: ¼⋅⅟k ∈ ⅟ℕᵈᵉᶠ

    ⎜ ∀⅟k ∈ ⅟ℕᵈᵉᶠ:
    ⎜ ¬∃ᴿr: 0 < r < δ ≤ ⅟k
    ⎜ δ is a lower.bound of ⅟ℕᵈᵉᶠ

    ⎜ β the greatest.lower.bound of ⅟ℕᵈᵉᶠ
    ⎜ might or might not be next to 0 but
    ⎜ β is greater.equal lower.bound δ
    ⎜ β = glb.⅟ℕᵈᵉᶠ
    ⎜ ∀⅟k ∈ ⅟ℕᵈᵉᶠ:
    ⎜ 0 < δ ≤ β ≤ ⅟k

    ⎜ 2⋅β > β
    ⎜ 2⋅β is not a lower.bound greater.than.greatest
    ⎜ 2⋅β > ⅟k₂ᵦ
    ⎜ 2⋅β > ¼⋅⅟k₂ᵦ
    ⎜ ½.β > ¼⋅⅟k₂ᵦ
    ⎜ ½.β is not a lower.bound of ⅟ℕᵈᵉᶠ

    ⎜ However,
    ⎜ ½.β < β
    ⎜ ∀⅟k ∈ ⅟ℕᵈᵉᶠ:
    ⎜ ½.β < β ≤ ⅟k
    ⎜ ½.β is a lower bound of ⅟ℕᵈᵉᶠ
    ⎝ Contradiction.

    Therefore
    δ isn't next to 0

    There is no point next to 0.

    Either there is a point next to zero
    or there is no point next to zero,

    Yes, one is true.
    It's the one without darkᵂᴹ numbers.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Sun Sep 22 20:37:34 2024
    On 22.09.2024 19:44, Jim Burns wrote:

    There is no point next to 0.

    This is definite: There is a smallest unit fraction because there are no
    unit fractions without a first one when counting from zero.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Sun Sep 22 21:06:24 2024
    Am 22.09.2024 um 20:54 schrieb Chris M. Thomasson:
    On 9/22/2024 11:37 AM, WM wrote:
    On 22.09.2024 19:44, Jim Burns wrote:

    There is no point next to 0.

    This is

    pure bullshit.

    There is a smallest unit fraction

    Nope, there isn't.

    because there are
    no unit fractions without a first one when counting from zero.

    Huh? Wow... Hummm... You suffer from some sort of learning disorder? Or,
    pure troll? Humm...

    Well put! :-)

    There is no smallest unit fraction.

    Indeed!

    If u is a unit fraction, 1/(1/u + 1) is a smaller one.

    [For example: If u = 1/3, then 1/u is 3 and 1/u + 1 is 4. And 1/4 is
    smaller than 1/3.]

    Mückenheim is a psychotic asshole full of shit.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Sun Sep 22 21:07:16 2024
    Am 22.09.2024 um 20:55 schrieb Chris M. Thomasson:
    On 9/22/2024 6:27 AM, WM wrote:
    On 22.09.2024 01:24, Richard Damon wrote:
    On 9/21/24 4:02 PM, WM wrote:
    On 21.09.2024 01:04, Richard Damon wrote:
    On 9/20/24 2:13 PM, WM wrote:
    On 20.09.2024 05:35, Richard Damon wrote:
    On 9/19/24 9:02 AM, WM wrote:
    ;
    "always another" is potential infinity. I am discussing actual
    infinity where all are there at once and no "always" is used.
    ;
    So, then how do you describe that fact that there IS always
    another.
    ;
    The reason is that only a potentially infinite collection of
    elements can be utilzed.
    ;
    But what keeps you from actually utilizing any of them?

    The fact that every used number belongs to a finite initial segment
    upon which almost all numbers are following.

    So, we can just choose the finite initial segment that includes that
    number, and thus can use it,

    But you cannot choose the infinite rest.

    If a tree falls in a forest... ;^D

    Who knows ...

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Sun Sep 22 15:20:57 2024
    On 9/22/24 9:22 AM, WM wrote:
    On 22.09.2024 00:32, Jim Burns wrote:
    On 9/21/2024 4:11 PM, WM wrote:

    There is no transfinite WWMB ordinal ξ before
    the first transfinite ordinal, WWMB ω

    That may be. But then
    there is no complete set of natural numbers
    and no ω.

    WWMB ω is the first transfinite ordinal.
    Existing or not.existing, WWMB ω isn't
    anything other than the first transfinite ordinal.

    As long as it's WWMB ω which you discuss,
    WWMB ω-1 doesn't exist.

    Then ω does not exist.

    Regards, WM

    OF course it does. You just don't understand the logic that makes it.

    This is because you brain has been totally exploded by the
    contradictions created by your logic system depriving you of any
    understanding of what you are trying to talk about.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Sun Sep 22 16:22:05 2024
    On 9/22/2024 2:37 PM, WM wrote:
    On 22.09.2024 19:44, Jim Burns wrote:

    There is no point next to 0.

    There is a smallest unit fraction
    because
    there are no unit fractions without a first one
    when counting from zero.

    [1/2] ∀⅟k ∈ ⅟ℕᵈᵉᶠ: ⅟ℕᵈᵉᶠ ∋ ¼⋅⅟k < ⅟k

    Each visibleᵂᴹ unit.fraction ⅟k has
    a counter.example ¼⋅⅟k to its being smallest.

    [2/2] ¬∃ᴿδ > 0: ¬( δ >ₑₓᵢₛₜₛ ⅟ℕᵈᵉᶠ )

    No positive point, unit.fraction or otherwise,
    is NOT undercut by some visible unit fraction.

    A point undercut by a visibleᵂᴹ unit fraction
    is not the smallest unit fraction.

    ⎛ Assume otherwise.
    ⎜ Assume
    ⎜ δ > 0 ∧ ¬( δ >ₑₓᵢₛₜₛ ⅟ℕᵈᵉᶠ )

    ⎜ β = glb.⅟ℕᵈᵉᶠ ≥ δ > 0

    ⎜ ½.β < β
    ⎜ ¬( ½.β >ₑₓᵢₛₜₛ ⅟ℕᵈᵉᶠ )

    ⎜ 2.β > β
    ⎜ 2.β >ₑₓᵢₛₜₛ ⅟ℕᵈᵉᶠ

    ⎜ However,
    ⎜ 2.β >ₑₓᵢₛₜₛ ⅟ℕᵈᵉᶠ
    ⎜ 2.β > ⅟k
    ⎜ ½.β > ¼⋅⅟k
    ⎜ ½.β >ₑₓᵢₛₜₛ ⅟ℕᵈᵉᶠ

    ⎜ ½.β >ₑₓᵢₛₜₛ ⅟ℕᵈᵉᶠ ∧ ¬( ½.β >ₑₓᵢₛₜₛ ⅟ℕᵈᵉᶠ )
    ⎝ Contradiction.

    Therefore,
    ¬∃ᴿδ > 0: ¬( δ >ₑₓᵢₛₜₛ ⅟ℕᵈᵉᶠ )

    Visibleᵂᴹ or darkᵂᴹ,
    there is no smallest unit fraction.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Sun Sep 22 18:53:14 2024
    On 9/22/24 2:37 PM, WM wrote:
    On 22.09.2024 19:44, Jim Burns wrote:

    There is no point next to 0.

    This is definite: There is a smallest unit fraction because there are no
    unit fractions without a first one when counting from zero.

    Regards, WM


    From what property?

    Just your broken definitions.

    Sorry, you are just proving you are an idiot.

    Count down from infinity please, what is the actual first number you
    use, (not w-1, that isn't a number).

    The problem is it doesn't exist, because the numbers don't have a bound
    on that end.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Sun Sep 22 18:50:08 2024
    On 9/22/24 11:36 AM, WM wrote:
    On 22.09.2024 16:18, joes wrote:
    Am Sun, 22 Sep 2024 15:27:01 +0200 schrieb WM:

    So, we can just choose the finite initial segment that includes that
    number, and thus can use it,
    But you cannot choose the infinite rest.
    Of course you can.

    No, I cannot. But if you can, please show it. Choose a number having
    more predecessors than successors.

    Regards, WM

    That wasn't the question, or a necessary property.

    Just more evidence that your logic (and your brain) is just all blown up
    to smithereens by the contradictions in your logic.

    You just don't understand how "infinity" works, because your brain is
    just to limited.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Sun Sep 22 18:47:55 2024
    On 9/22/24 9:27 AM, WM wrote:
    On 22.09.2024 01:24, Richard Damon wrote:
    On 9/21/24 4:02 PM, WM wrote:
    On 21.09.2024 01:04, Richard Damon wrote:
    On 9/20/24 2:13 PM, WM wrote:
    On 20.09.2024 05:35, Richard Damon wrote:
    On 9/19/24 9:02 AM, WM wrote:
    ;
    "always another" is potential infinity. I am discussing actual
    infinity where all are there at once and no "always" is used.
    ;
    So, then how do you describe that fact that there IS always
    another.
    ;
    The reason is that only a potentially infinite collection of
    elements can be utilzed.
    ;
    But what keeps you from actually utilizing any of them?

    The fact that every used number belongs to a finite initial segment
    upon which almost all numbers are following.

    So, we can just choose the finite initial segment that includes that
    number, and thus can use it,

    But you cannot choose the infinite rest.

    Regards, WM

    What keeps you from choosing any of them?

    That you didn't yet, doesn't mean you can't.

    Your problem is you can't select ALL at once with finite logic, because
    finite logic can't handle the infinte.

    Thus, your "acutally infinity" isn't actually infinte, but just your
    logic blowing itself up trying to make it so,

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Mon Sep 23 01:35:49 2024
    Am 23.09.2024 um 01:28 schrieb Chris M. Thomasson:

    Concerning the integers:

    [...} each number has infiniteLY MANY predecessors and infiniteLY MANY successors.

    ...

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Mon Sep 23 01:44:19 2024
    Am 23.09.2024 um 01:35 schrieb Moebius:
    Am 23.09.2024 um 01:28 schrieb Chris M. Thomasson:

    Concerning the integers:

    [...} each number has infiniteLY MANY predecessors and infiniteLY MANY
    successors.

    ...

    Btw. we might define "signed unit fractions" too (just for fun).

    Def.: x e IR is a /signed unit fraction/ iff there is an z in Z such
    that x = 1/z.

    Then the signed unit fractions are just the numbers

    -1/1, -1/2, -1/3, ... ... 1/3, 1/2, 1/1.

    0 would be a very special point here. No signed unit fraction, but
    "surrounded" by infinitely many signed unit fractions. Moreover, they
    would be arbitrarilly dense "there" (i.e. in the environment of 0).

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Mon Sep 23 07:21:12 2024
    On 9/22/24 9:22 AM, WM wrote:
    On 22.09.2024 00:32, Jim Burns wrote:
    On 9/21/2024 4:11 PM, WM wrote:

    There is no transfinite WWMB ordinal ξ before
    the first transfinite ordinal, WWMB ω

    That may be. But then
    there is no complete set of natural numbers
    and no ω.

    WWMB ω is the first transfinite ordinal.
    Existing or not.existing, WWMB ω isn't
    anything other than the first transfinite ordinal.

    As long as it's WWMB ω which you discuss,
    WWMB ω-1 doesn't exist.

    Then ω does not exist.

    Regards, WM

    It only doesn't exist in your too primative logic that can't handle it.

    ω-1 doesn't exist, just like in the Natural Numbers 0-1 doesn't exist.

    I guess the only numbers you have are the signed integers, where there
    is no first OR last element of the set in numerical order.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Mon Sep 23 14:56:03 2024
    On 23.09.2024 00:53, Richard Damon wrote:

    Count down from infinity please, what is the actual first number you
    use, (not w-1, that isn't a number).

    The problem is it doesn't exist, because the numbers don't have a bound
    on that end.

    The problem is not non-existence. Proof: Chosse the greates existing
    number m. Then double it to get 2m. Why didn't you choose 2m originally? Obviously it exists.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Mon Sep 23 14:57:07 2024
    On 22.09.2024 22:22, Jim Burns wrote:
    On 9/22/2024 2:37 PM, WM wrote:
    On 22.09.2024 19:44, Jim Burns wrote:

    There is no point next to 0.

    There is a smallest unit fraction
    because
    there are no unit fractions without a first one
    when counting from zero.

    Each visibleᵂᴹ unit.fraction ⅟k has
    a counter.example ¼⋅⅟k to its being smallest.

    Yes. Therefore the smallest unit fraction must be dark.

    No positive point, unit.fraction or otherwise,
    is NOT undercut by some visible unit fraction.

    Wrong. NUF(x) grows from 0 to more. This increase cannot avoid 1 because
    of ∀n ∈ ℕ: 1/n - 1/(n+1) > 0.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Tom Bola@21:1/5 to All on Mon Sep 23 15:36:49 2024
    Am 23.09.2024 14:56:03 WM drivels:
    On 23.09.2024 00:53, Richard Damon wrote:

    Count down from infinity please, what is the actual first number you
    use, (not w-1, that isn't a number).

    The problem is it doesn't exist, because the numbers don't have a bound
    on that end.

    Chosse the greates existing number m. Then double it to get 2m.
    Why didn't you choose 2m originally? Obviously it exists.

    LOL, "obviously"...
    Choose the day you will die - you cannot. "Obviously" you are immortal...

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Mon Sep 23 17:55:08 2024
    Am 23.09.2024 um 15:36 schrieb Tom Bola:
    Am 23.09.2024 14:56:03 WM drivels:

    Chosse the greates [...] number m. Then [...]

    <facepalm>

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Mon Sep 23 13:58:36 2024
    On 9/23/2024 8:57 AM, WM wrote:
    On 22.09.2024 22:22, Jim Burns wrote:
    On 9/22/2024 2:37 PM, WM wrote:
    On 22.09.2024 19:44, Jim Burns wrote:

    There is no point next to 0.

    There is a smallest unit fraction
    because
    there are no
    unit fractions without a first one
    when counting from zero.

    Each visibleᵂᴹ unit.fraction ⅟k has
    a counter.example ¼⋅⅟k to its being smallest.

    Yes.

    Consider the point β between
    the visibleᵂᴹ unit.fractions and
    lower.bounds of the visibleᵂᴹ unit.fractions.
    VUnitFractionBounds ᵉᵃᶜʰ≤ β ≤ᵉᵃᶜʰ VUnitFractions

    ⎛ Imagine β being positive.

    ⎜ ½.β is a visibleᵂᴹ.unit.fraction lower.bound
    ⎜ 2.β is among the visibleᵂᴹ unit.fractions.
    ⎜ 0 < ½.β < β < 2.β

    ⎜ 2.β is among the visibleᵂᴹ unit.fractions.
    ⎜ For example, for some visibleᵂᴹ ⅟k
    ⎜ 0 < ½.β < β ≤ ⅟k < 2.β < ⅟1

    ⎜ But ¼⋅⅟k is also a visibleᵂᴹ unit.fraction,
    ⎜ and ¼⋅⅟k is where a visibleᵂᴹ unit.fraction
    ⎜ cannot be: below the bound.
    ⎜ 0 < ¼⋅⅟k < ½.β < β ≤ ⅟k < 2.β < ⅟1

    ⎜ ½.β is a not.bounding bound,
    ⎝ which is gibberish.

    A positive greatest.lower.bound of
    visibleᵂᴹ unit.fractions
    is gibberish.

    Also,
    any positive lower.bound of
    visibleᵂᴹ unit.fractions
    would be greater.than.greatest
    and also gibberish.

    Therefore
    the smallest unit fraction must be dark.

    A smallest unit.fraction,
    visibleᵂᴹ or darkᵂᴹ, is positive
    and, if it weren't gibberish,
    would be a positive lower.bound of
    visibleᵂᴹ unit.fractions.

    However,
    a positive lower.bound, visibleᵂᴹ or darkᵂᴹ,
    of visibleᵂᴹ unit.fractions
    is gibberish.

    Therefore,
    a smallest unit.fraction, visibleᵂᴹ or darkᵂᴹ,
    is gibberish.

    No positive point, unit.fraction or otherwise,
    is NOT undercut by some visible unit fraction.

    Wrong.
    NUF(x) grows from 0 to more.
    This increase cannot avoid 1

    How to avoid 1
    0 < ⅟⌈2+⅟x⌉ < ⅟⌈1+⅟x⌉ < x

    because
    of ∀n ∈ ℕ: 1/n - 1/(n+1) > 0.

    ∀n ∈ ℕ: 1/n ≠ 0

    0 is the point between
    points with no unit.fractions below and
    points r which,
    for each countable.to k
    there are more.than.k below
    ⎛ ∀ᴿr > 0:
    ⎜ ∀k ∈ Nᵈᵉᶠ:
    ⎝ 0 < ⅟⌈k+1+⅟x⌉ < ⅟⌈1+⅟x⌉ < x

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Mon Sep 23 14:53:36 2024
    On 9/23/2024 8:56 AM, WM wrote:
    On 23.09.2024 00:53, Richard Damon wrote:

    Count down from infinity please,
    what is the actual first number you use,
    (not w-1, that isn't a number).

    The problem is it doesn't exist,
    because the numbers don't have a bound
    on that end.

    The problem is not non-existence.

    Some things which we can describe
    would require gibberish, impossibilities
    if they existed.

    Because we do not,
    we _can not_ use gibberish,
    we conclude that
    gibberish.requirers do not exist.

    You (WM) can declare that gibberish.requirers exist
    until you're blue in the face;
    gibberish.requirers will persist in
    requiring gibberish.
    We _can't_ accept gibberish.
    There is _nothing there to accept_

    Proof:
    Chosse the greates existing number m.

    Consider Boolos's ST
    ⎛ ∃{}
    ⎜ ∀x∀y∃z=x∪{y}
    ⎝ {set}.extensionality

    ∀m∃z=m∪{m}

    ¬∃m¬∃z=m∪{m}

    Along with the claim ∃m¬∃z=m∪{m}
    that a greatest number exists
    we have
    ¬∃m¬∃z=m∪{m} ∧ ∃m¬∃z=m∪{m}
    which is gibberish.

    Then double it to get 2m.

    Which is gibberish in the context of
    m being the largest number.

    Why didn't you choose 2m originally?

    Because largest.number m is gibberish.

    Obviously it exists.

    largest m and m+1 2m and mᵐ
    are all gibberish.

    Talking about them
    as though they make sense
    does not change gibberish into sense.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Mon Sep 23 18:54:59 2024
    On 9/23/24 8:56 AM, WM wrote:
    On 23.09.2024 00:53, Richard Damon wrote:

    Count down from infinity please, what is the actual first number you
    use, (not w-1, that isn't a number).

    The problem is it doesn't exist, because the numbers don't have a
    bound on that end.

    The problem is not non-existence. Proof: Chosse the greates existing
    number m. Then double it to get 2m. Why didn't you choose 2m originally? Obviously it exists.

    Regards, WM



    Because you asked for something that doesn't exist.

    There is no largest existing number m, so I guess that says your logic,
    that created the question, just doesn't exist.

    Show me a 4 sided triangle.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Mon Sep 23 18:53:01 2024
    On 9/23/24 8:57 AM, WM wrote:
    On 22.09.2024 22:22, Jim Burns wrote:
    On 9/22/2024 2:37 PM, WM wrote:
    On 22.09.2024 19:44, Jim Burns wrote:

    There is no point next to 0.

    There is a smallest unit fraction
    because
    there are no unit fractions without a first one
    when counting from zero.

    Each visibleᵂᴹ unit.fraction ⅟k has
    a counter.example ¼⋅⅟k to its being smallest.

    Yes. Therefore the smallest unit fraction must be dark.

    Which is something that doesn't exist.

    Your "Darkness" is just a method you are trying to use to hide the fact
    that your logic is just broken.

    NO actual Unit Fraction is "dark" as ALL of them are usable individually
    (it would just take infinite work to actually use all of them).

    Thus, your "Dark" numbers aren't actually Unit Fractions, but something
    else that you want to CALL unit fractions to make you logic seem to
    work, but just actually blow it up more.

    No positive point, unit.fraction or otherwise,
    is NOT undercut by some visible unit fraction.

    Wrong. NUF(x) grows from 0 to more. This increase cannot avoid 1 because
    of ∀n ∈ ℕ: 1/n - 1/(n+1) > 0.

    Regards, WM

    Which is why NUF(x) isn't actually possible to exist by your definition,
    There is *NO* finite number x where NUF(x) can be 1, and thus it is just
    a mis-defined function.

    Sorry, you are hanging your logic on contradictions, which has made your
    brain, and the logic system, just explode in the errors it makes from contradictions.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Tue Sep 24 08:00:53 2024
    Am Sun, 22 Sep 2024 15:28:38 +0200 schrieb WM:
    On 22.09.2024 01:25, Richard Damon wrote:
    On 9/21/24 9:57 AM, WM wrote:
    On 21.09.2024 01:06, Richard Damon wrote:
    On 9/20/24 2:33 PM, WM wrote:

    Its just when they become infinite that there might be ends that
    don't exist.
    In order to count a countable set, you have to start at 1.
    Right, so the countable numbers have ONE end that can be used to count
    from.
    Really existing sets of real unit fractions have two ends.
    What is „an end”?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Tue Sep 24 07:59:36 2024
    Am Mon, 23 Sep 2024 14:56:03 +0200 schrieb WM:
    On 23.09.2024 00:53, Richard Damon wrote:

    Count down from infinity please, what is the actual first number you
    use, (not w-1, that isn't a number).
    The problem is it doesn't exist, because the numbers don't have a bound
    on that end.
    The problem is not non-existence. Proof: Chosse the greates existing
    number m. Then double it to get 2m. Why didn't you choose 2m originally? Obviously it exists.
    What screwy reasoning. If m were the greatest natural, you couldn’t
    choose 2m. OTOH, of course you could have chosen 2n=m.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Tue Sep 24 18:22:37 2024
    Am 24.09.2024 um 09:59 schrieb joes:
    Am Mon, 23 Sep 2024 14:56:03 +0200 schrieb WM:

    The problem is not non-existence. Proof: Chosse the greates existing
    number m. Then double it to get 2m. Why didn't you choose 2m originally?

    What screwy reasoning. If m were the greatest natural, you couldn’t
    choose 2m.

    Actually, if m were the greatest natural, you could not "double it to
    get 2m" (after all for all n e IN: n < 2n).

    Obviously it exists.

    @Mückenheim: Heilige Scheiße. Nein, obviously it doesn't exist. Wie auch schon keine größte natürliche Zahl existiert. Man kann letztere daher
    auch nicht wählen, Du Spinner!

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to joes on Tue Sep 24 12:49:19 2024
    On 9/24/2024 4:00 AM, joes wrote:
    Am Sun, 22 Sep 2024 15:28:38 +0200 schrieb WM:
    On 22.09.2024 01:25, Richard Damon wrote:
    On 9/21/24 9:57 AM, WM wrote:
    On 21.09.2024 01:06, Richard Damon wrote:

    Its just when they become infinite that
    there might be ends that don't exist.

    In order to count a countable set,
    you have to start at 1.

    Right, so
    the countable numbers have ONE end that
    can be used to count from.

    Really existing sets of real unit fractions
    have two ends.

    What is „an end”?

    I have been using "end of S" to mean
    "an element of S ≤ or ≥ each element of S"
    as distinct from "bound of S" meaning
    "anything ≤ or ≥ each element of S"

    I have been using those senses a lot.
    I suspect that that is what WM means here.


    WM's argument goes something like this:

    🛇⎛ The set of unit.fractions exists.
    🛇⎜ No _identifiable_ unit.fraction is its second end.
    🛇⎜ (axiom) All sets have two ends.
    🛇⎜ The second end of the unit.fractions exists
    🛇⎝ but it is _not identifiable_

    There is plenty to correct in that,
    but I think WM's cornerstone.error is
    how he thinks axioms work.

    I think WM thinks that,
    if he declares all sets two.ended,
    all sets which they have been discussing
    thereby become two.ended.
    ⎛ An obviously.false example of the technique:
    ⎜ If one declares all triangles right triangles,
    ⎜ all triangles become right triangles.
    ⎜ Maybe with 'dark' degrees in some angle,
    ⎝ bringing it up to 90°?

    How axioms actually work is that,
    if WM or I or you declare all sets two.ended,
    and the set of unit.fractions isn't two.ended,
    then
    the set of unit.fractions is still the same,
    but it is not one of the sets we are discussing.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to Ross Finlayson on Tue Sep 24 13:22:12 2024
    On 9/20/2024 5:15 PM, Ross Finlayson wrote:
    On 09/20/2024 12:26 PM, Jim Burns wrote:
    On 9/20/2024 2:10 PM, WM wrote:
    On 20.09.2024 19:51, Jim Burns wrote:

    Put pencil to paper and
    draw two curves which cross.
    There is a point at which
    the curves intersect.

    Theorems or axioms?

    Here, a theorem.
    ⎛ (axiom)
    ⎜ The sets of ZFC exist.
    ⎜ (theorems)
    ⎜ ℕ exists
    ⎜ ℤ exists
    ⎜ ℚ exists
    ⎜ The set of Q.subsets
    ⎜ {S⊆ℚ:∅≠Sᵉᵃᶜʰ<ₑₓᵢₛₜₛSᵉᵃᶜʰ<ᵉᵃᶜʰℚ\S≠∅}
    ⎜ exists and is the complete ordered field.
    ⎜ The Intermediate Value Theorem is true of
    ⎝ {S⊆ℚ:∅≠Sᵉᵃᶜʰ<ₑₓᵢₛₜₛSᵉᵃᶜʰ<ᵉᵃᶜʰℚ\S≠∅}

    Here, an axiom.
    ⎛ (axiom)
    ⎜ The IVT is true of ordered field 𝔽ᑉᐧⁱᵛᵗ
    ⎜ (theorem)
    ⎝ 𝔽ᑉᐧⁱᵛᵗ is Dedekind.complete, and thus is ℝ

    "Drawing" a line, "tire en regle", or curve,
    has that when you put pencil to paper,
    and draw a line, or curve if you will,
    and life the pencil and put it back down,
    and draw another one, intersecting the first:
    the _curves_ cross.

    ... At a point, of for example where
    they're incident, they coincide.

    Yes.
    Because continuous curves must cross,
    bounded nonempty set S must have a least.upper.bound.c

    ⎛ In particular, the function
    ⎜⎛ 0 above S
    ⎜⎝ 1 otherwise
    ⎜ doesn't intersect line y = 1/2 and
    ⎜ must be discontinuous somewhere and
    ⎜ can only be discontinuous at lub.S and
    ⎝ lub.S therefore exists.

    Then these lines-reals these iota-values
    are about the only "standard infinitesimals"
    there are: with extent you observe, density
    you observe, least-upper-bound as trivial,
    and measure as assigned, length assignment.

    Lines with the least.upper.bound property
    (equivalent to "crossing must intersect")
    do not have infinitesimals.

    For example,
    there are no infinitesimals
    between 0 and all the _finite_ unit.fractions.

    ⎛ Each positive point has
    ⎜ a finite unit.fraction between it and 0

    ⎜⎛ Otherwise,
    ⎜⎜ greatest.lower.bound β of finite unit.fractions
    ⎜⎜ is positive, and
    ⎜⎜ not.bounding 2⋅β > finite ⅟k
    ⎜⎜ ½⋅β > ¼⋅⅟k
    ⎜⎜ β > ½⋅β > ¼⋅⅟k
    ⎜⎜ greatest.lower.bound β is not.bounding,
    ⎝⎝ which is gibberish.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Tue Sep 24 21:28:36 2024
    On 23.09.2024 19:58, Jim Burns wrote:
    On 9/23/2024 8:57 AM, WM wrote:

    a smallest unit.fraction, visibleᵂᴹ or darkᵂᴹ,
    is gibberish.

    But the increase of NUF(x) from 0 to infinity without intermediate steps
    is not gibberish?

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Tue Sep 24 21:35:23 2024
    On 24.09.2024 00:53, Richard Damon wrote:
    On 9/23/24 8:57 AM, WM wrote:

    Yes. Therefore the smallest unit fraction must be dark.

    Which is something that doesn't exist.

    The function NUF(0) increases. ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 proves that it can gain only one unit fraction at any point x ∈ ℝ, hence NUF has to
    pass the value 1.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to joes on Tue Sep 24 21:38:17 2024
    On 24.09.2024 10:00, joes wrote:
    Am Sun, 22 Sep 2024 15:28:38 +0200 schrieb WM:

    Really existing sets of real unit fractions have two ends.
    What is „an end”?

    An end is where nothing follows.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Tue Sep 24 21:43:16 2024
    On 24.09.2024 18:49, Jim Burns wrote:

    WM's argument goes something like this:

    🛇⎛ The set of unit.fractions exists.
    🛇⎜ No _identifiable_ unit.fraction is its second end.
    🛇⎜ (axiom) All sets have two ends.

    Not an axiom but the fact that below zero there is no unit fraction
    proves the lower end.

    🛇⎜ The second end of the unit.fractions exists
    🛇⎝ but it is _not identifiable_

    There is plenty to correct in that,
    but I think WM's cornerstone.error is
    how he thinks axioms work.

    I think that mathematics of fractions is correct.
    It contains ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 from which follows that never two different5 fractions sit upon each other. From NUF(0) = 0 the smallest
    unit fraction follows immeditely, From it the largest natural number.

    Regards WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Tue Sep 24 21:30:52 2024
    On 23.09.2024 20:53, Jim Burns wrote:

    Because largest.number m is gibberish.

    The largest number that you can choose depends on your facilities.
    Consider the largest number available on your pocket calculator.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Tue Sep 24 16:19:23 2024
    On 9/24/2024 3:28 PM, WM wrote:
    On 23.09.2024 19:58, Jim Burns wrote:
    On 9/23/2024 8:57 AM, WM wrote:

    a smallest unit.fraction, visibleᵂᴹ or darkᵂᴹ,
    is gibberish.

    But
    the increase of NUF(x) from 0 to infinity
    without intermediate steps
    is not gibberish?

    Anything which
    can be reached by intermediate steps
    is not infinite.
    (You (WM) apparently mean something different.)

    Thus
    increasing NUF(x) from 0 to infinity
    WITH intermediate steps
    is gibberish,
    in the same way in which
    a right triangle without a right angle
    is gibberish.

    Of many suitable definitions of natural numbers,
    one is:
    they are well.ordered (subsets minimummed or empty)
    they continue (have successors)
    they are reached by a step (≠0 have predecessors)

    The natural numbers are our Paradigm of Finite.

    There is no first unreachable natural number.
    By that and by its well.order,
    there is no unreachable natural number.

    ω is not a natural number.
    ⎛ Each before ω can be reached.
    ⎝ Each which can be reached is before ω.

    If ω-1 existed such that (ω-1)+1 = ω
    then ω could be reached
    and w+1 could be reached, even though not.before ω
    But that's not ω

    ω-1 does not exist
    in the same way in which
    four.cornered.triangles do not exist.
    They are gibberish,
    descriptions describing nothing.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Tue Sep 24 22:42:56 2024
    Am 24.09.2024 um 22:16 schrieb Chris M. Thomasson:
    On 9/24/2024 12:30 PM, WM wrote:
    On 23.09.2024 20:53, Jim Burns wrote:

    Because largest.number m is gibberish.

    The largest number
    **** that you can choose **** depends on your facilities.

    Originally, this asshole referred to "the largest number", NOW it's just
    the largest number ___that you can choose___".

    <faceplam>

    Mückenheim is a fucking asshole full of shit!

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Tue Sep 24 20:51:32 2024
    Am Tue, 24 Sep 2024 21:38:17 +0200 schrieb WM:
    On 24.09.2024 10:00, joes wrote:
    Am Sun, 22 Sep 2024 15:28:38 +0200 schrieb WM:

    Really existing sets of real unit fractions have two ends.
    What is „an end”?
    An end is where nothing follows.
    Does it need to be a member of the set?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Tue Sep 24 22:37:18 2024
    On 24.09.2024 22:19, Jim Burns wrote:
    On 9/24/2024 3:28 PM, WM wrote:

    Thus
    increasing NUF(x) from 0 to infinity
    WITH intermediate steps
    is gibberish,

    The only alternative would by infinitely many unit fractions at one
    point. That is not gibberish but wrong.

    Of many suitable definitions of natural numbers,
    one is:
    they are well.ordered (subsets minimummed or empty)
    they continue (have successors)
    they are reached by a step (≠0 have predecessors)

    The natural numbers are our Paradigm of Finite.

    There is no first unreachable natural number.

    The natural numbers n belonging to the first infinitely many unit
    fractions 1/n, i.e. there where NUF(x) increases at one point from 0 to infinity, cannot be distinguished in your opinion. Thus they are
    unreachable.

    By that and by its well.order,
    there is no unreachable natural number.

    ω is not a natural number.
    ⎛ Each before ω can be reached.
    ⎝ Each which can be reached is before ω.

    If ω-1 existed such that (ω-1)+1 = ω
    then ω could be reached

    If ω-1 could be seen. But it cannot.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Wed Sep 25 00:59:35 2024
    On 9/24/2024 4:37 PM, WM wrote:
    On 24.09.2024 22:19, Jim Burns wrote:
    On 9/24/2024 3:28 PM, WM wrote:
    On 23.09.2024 19:58, Jim Burns wrote:
    On 9/23/2024 8:57 AM, WM wrote:

    a smallest unit.fraction, visibleᵂᴹ or darkᵂᴹ,
    is gibberish.

    But
    the increase of NUF(x) from 0 to infinity
    without intermediate steps is not gibberish?

    Anything which
    can be reached by intermediate steps
    is not infinite.
    (You (WM) apparently mean something different.)

    Thus
    increasing NUF(x) from 0 to infinity
    WITH intermediate steps
    is gibberish,

    The only alternative would by
    infinitely many unit fractions at one point.

    The correct (different) alternative is:
    infinitely.many unit.fractions
    at one point per unit.fraction,
    with infinitely.many points in all.

    Although
    no more than finitely.many points
    can be stepped.through end.to.end
    we don't require these points to do more than _exist_

    More.than.finitely.many can _exist_

    The only alternative would by
    infinitely many unit fractions at one point.
    That is not gibberish but wrong.

    Each positive point δ, visibleᵂᴹ or darkᵂᴹ,
    is undercut by a visibleᵂᴹ.unit.fraction
    The only alternative is gibberish.

    ⎛ Assume δ is positive and not.undercut.

    ⎜ β is between
    ⎜ points.undercut > β and points.not.undercut < β

    ⎜ β ≥ δ > 0

    ⎜ 2⋅β > β
    ⎜ 2⋅β is undercut
    ⎜ 2⋅β > ⅟k ∈ ⅟ℕdef
    ⎜ ½⋅β > ¼⋅⅟k ∈ ⅟ℕdef
    ⎜ ½⋅β is undercut.

    ⎜ However,
    ⎜ ½⋅β < β
    ⎜ ½⋅β is not.undercut

    ⎜ "½⋅β is undercut and not.undercut"
    ⎝ is gibberish.

    The only alternative would by
    infinitely many unit fractions at one point.
    That is not gibberish but wrong.

    Each positive.point, visibleᵂᴹ or darkᵂᴹ,
    is undercut by a visibleᵂᴹ.unit fraction

    Each visibleᵂᴹ.unit.fraction
    is undercut by more than.k unit.fractions,
    at one point per unit.fraction,
    where k is a countable.to number.

    Each positive point, visibleᵂᴹ or darkᵂᴹ,
    is undercut by more.than.finitely.many
    (infinitely.many)
    visibleᵂᴹ unit.fractions.

    The only alternative is gibberish.

    Of many suitable definitions of natural numbers,
    one is:
    they are well.ordered (subsets minimummed or empty)
    they continue (have successors)
    they are reached by a step (≠0 have predecessors)

    The natural numbers are our Paradigm of Finite.

    There is no first unreachable natural number.
    By that and by its well.order,
    there is no unreachable natural number.

    The natural numbers n belonging to
    the first infinitely many unit fractions 1/n, i.e.
    there where NUF(x) increases at one point
    from 0 to infinity,
    cannot be distinguished in your opinion.
    Thus they are unreachable.

    1. Describe 'reachable'.
    2. Observe that infinitely.many
    (our 'infinitely.many', not what you think it is)
    is not what that is, is not reachable.

    ⎛ A finite ordered set begins and ends, or it is empty.
    ⎝ Each of its subsets begins and ends, or it is empty.

    In a finite ordered set
    for each split,
    the foresplit ends and, in one step more,
    the hindsplit begins.

    In a finite ordered set,
    for each split,
    the hindsplit _can be reached_
    from the foresplit.

    To insist that /1 can be reached from 0
    unit.fraction by unit.fraction
    is
    to insist that the unit fractions are
    finitely.many.

    To insist they are is gibberish, and
    it can be (has been) shown to be gibberish.

    By that and by its well.order,
    there is no unreachable natural number.

    ω is not a natural number.
    ⎛ Each before ω can be reached.
    ⎝ Each which can be reached is before ω.

    If ω-1 existed such that (ω-1)+1 = ω
    then ω could be reached

    If ω-1 could be seen. But it cannot.

    ω-1 is gibberish, seen or unseen.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Wed Sep 25 07:53:04 2024
    On 9/24/24 3:43 PM, WM wrote:
    On 24.09.2024 18:49, Jim Burns wrote:

    WM's argument goes something like this:

    🛇⎛ The set of unit.fractions exists.
    🛇⎜ No _identifiable_ unit.fraction is its second end.
    🛇⎜ (axiom) All sets have two ends.

    Not an axiom but the fact that below zero there is no unit fraction
    proves the lower end.

    🛇⎜ The second end of the unit.fractions exists
    🛇⎝ but it is _not identifiable_

    There is plenty to correct in that,
    but I think WM's cornerstone.error is
    how he thinks axioms work.

    I think that mathematics of fractions is correct.
    It contains ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 from which follows that never two different5 fractions sit upon each other. From NUF(0) = 0 the smallest
    unit fraction follows immeditely, From it the largest natural number.

    Regards WM



    Except that there doesn't exist a largest natural number, BY DEFINITION,
    so your finite mathematics can't handle the logic you are putting it to.

    SORRY, you are just showing your total ignorance of what you talk about,

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Wed Sep 25 07:54:27 2024
    On 9/24/24 3:38 PM, WM wrote:
    On 24.09.2024 10:00, joes wrote:
    Am Sun, 22 Sep 2024 15:28:38 +0200 schrieb WM:

    Really existing sets of real unit fractions have two ends.
    What is „an end”?

    An end is where nothing follows.

    Regards, WM


    And thus the lower end of the numbers x > 0 would be 0, a value not in
    the set, as the set doesn't have a lower end in it.

    That is why there is no smallest positive real or unit fraction.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Wed Sep 25 07:55:33 2024
    On 9/24/24 3:28 PM, WM wrote:
    On 23.09.2024 19:58, Jim Burns wrote:
    On 9/23/2024 8:57 AM, WM wrote:

    a smallest unit.fraction, visibleᵂᴹ or darkᵂᴹ,
    is gibberish.

    But the increase of NUF(x) from 0 to infinity without intermediate steps
    is not gibberish?

    Regards, WM

    It shows that NUF(x) itself is the source of the giberish, as it
    presumes things that don't actually exist,

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Wed Sep 25 07:59:47 2024
    On 9/24/24 3:35 PM, WM wrote:
    On 24.09.2024 00:53, Richard Damon wrote:
    On 9/23/24 8:57 AM, WM wrote:

    Yes. Therefore the smallest unit fraction must be dark.

    Which is something that doesn't exist.

    The function NUF(0) increases. ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 proves that it can gain only one unit fraction at any point x ∈ ℝ, hence NUF has to
    pass the value 1.

    Regards, WM

    Yes, it increases, but there is no point that in can increase to 1, so
    it just jumps to infinity.

    Your logic is just based on error and has exploded your brain into
    smithereens with its inconsistencies.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Wed Sep 25 07:58:01 2024
    On 9/24/24 4:37 PM, WM wrote:
    On 24.09.2024 22:19, Jim Burns wrote:
    On 9/24/2024 3:28 PM, WM wrote:

    Thus
    increasing NUF(x) from 0 to infinity
    WITH intermediate steps
    is gibberish,

    The only alternative would by infinitely many unit fractions at one
    point. That is not gibberish but wrong.

    Nope, which just shows your too small mind.

    The alternative is that the unit fractions keep getting closer and
    closer without limit.


    Of many suitable definitions of natural numbers,
    one is:
    they are well.ordered (subsets minimummed or empty)
    they continue (have successors)
    they are reached by a step (≠0 have predecessors)

    The natural numbers are our Paradigm of Finite.

    There is no first unreachable natural number.

    The natural numbers n belonging to the first infinitely many unit
    fractions 1/n, i.e. there where NUF(x) increases at one point from 0 to infinity, cannot be distinguished in your opinion. Thus they are
    unreachable.

    But no "n" is the last of that infininte set.


    By that and by its well.order,
    there is no unreachable natural number.

    ω is not a natural number.
    ⎛ Each before ω can be reached.
    ⎝ Each which can be reached is before ω.

    If ω-1 existed such that (ω-1)+1 = ω
    then ω could be reached

    If ω-1 could be seen. But it cannot.

    No, it just doesn't exist in the set, just like 0-1 doesn't exist in the Natural Numbers (only an extension of them).


    Regards, WM


    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to joes on Wed Sep 25 17:09:18 2024
    On 24.09.2024 22:51, joes wrote:
    Am Tue, 24 Sep 2024 21:38:17 +0200 schrieb WM:
    On 24.09.2024 10:00, joes wrote:
    Am Sun, 22 Sep 2024 15:28:38 +0200 schrieb WM:

    Really existing sets of real unit fractions have two ends.
    What is „an end”?
    An end is where nothing follows.
    Does it need to be a member of the set?

    The end is a member of the set. But in many cases it is invisible and
    only proved by the fact that there is a smaller infimum or a larger
    supremum.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to FromTheRafters on Wed Sep 25 17:14:27 2024
    On 24.09.2024 23:47, FromTheRafters wrote:
    on 9/24/2024, WM supposed :

    The function NUF(0) increases. ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 proves that >> it can gain only one unit fraction at any point x ∈ ℝ, hence NUF has
    to pass the value 1.

    It means "For all"
    and says nothing about starting somewhere, moving, and ending somewhere
    else.

    Whatever it means. I see that there are no unit fractions below 0 and
    many above 0. Therefore NUF increases. At no point it can increase by
    more than 1.

    Even if most mathematicians are far too stupid to understand this, I
    will repeat it on and on, maybe that sometime some will get it.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Wed Sep 25 17:23:41 2024
    On 25.09.2024 13:53, Richard Damon wrote:
    On 9/24/24 3:43 PM, WM wrote:

    I think that mathematics of fractions is correct.
    It contains ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 from which follows that never
    two different5 fractions sit upon each other. From NUF(0) = 0 the
    smallest unit fraction follows immediately, From it the largest natural
    number.

    Except that there doesn't exist a largest natural number, BY DEFINITION,

    That may be. Then there are no complete sets, no actual infinity. Good
    for maths, bad for matheology.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Wed Sep 25 17:26:30 2024
    On 25.09.2024 13:54, Richard Damon wrote:
    On 9/24/24 3:38 PM, WM wrote:
    On 24.09.2024 10:00, joes wrote:
    Am Sun, 22 Sep 2024 15:28:38 +0200 schrieb WM:

    Really existing sets of real unit fractions have two ends.
    What is „an end”?

    An end is where nothing follows.

    And thus the lower end of the numbers x > 0 would be 0, a value not in
    the set, as the set doesn't have a lower end in it.

    If it is a set (actual infinity), then the set has a smallest member.
    But that is hard to understand.

    That is why there is no smallest positive real or unit fraction.

    It is easier to understand with unit fractions. But most mathematicians
    are too stupid even for this obvious fact.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Wed Sep 25 17:32:15 2024
    On 25.09.2024 13:55, Richard Damon wrote:

    It shows that NUF(x) itself is the source of the giberish, as it
    presumes things that don't actually exist,

    It is a mathematical function. It is assumed to see dark numbers. You
    believe that infinitely many of the smallest fractions cannot be
    distinguished. So you believe in dark numbers too.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Wed Sep 25 17:28:43 2024
    On 25.09.2024 13:58, Richard Damon wrote:
    On 9/24/24 4:37 PM, WM wrote:

    The alternative is that the unit fractions keep getting closer and
    closer without limit.

    Either they occupy one point or NUF will distinguish them.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Wed Sep 25 17:33:27 2024
    On 25.09.2024 13:59, Richard Damon wrote:
    On 9/24/24 3:35 PM, WM wrote:

    Yes, it increases, but there is no point that in can increase to 1, so
    it just jumps to infinity.

    That means infinitely many cannot be distinguished. That is what I call
    dark numbers.


    Regards, WM

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  • From WM@21:1/5 to Jim Burns on Wed Sep 25 17:51:56 2024
    On 25.09.2024 06:59, Jim Burns wrote:
    On 9/24/2024 4:37 PM, WM wrote:

    Thus
    increasing NUF(x) from 0 to infinity
    WITH intermediate steps
    is gibberish,

    The only alternative would by
    infinitely many unit fractions at one point.

    The correct (different) alternative is:
    infinitely.many unit.fractions
    at one point per unit.fraction,

    That means NUF increases by 1 at every point occupied by a unit fraction.

    with infinitely.many points in all.

    NUF(x) distinguishes all points.

    Although
    no more than finitely.many points
    can be stepped.through end.to.end
    we don't require these points to do more than _exist_

    More.than.finitely.many can _exist_

    Yes, but they are dark.

    NUF increases. At no point it can increase by more than 1.

    Even if most mathematicians are far too stupid to understand this, I
    will repeat it on and on, maybe that sometime some will get it.

    Regards, WM

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  • From joes@21:1/5 to All on Wed Sep 25 16:41:30 2024
    Am Wed, 25 Sep 2024 17:32:15 +0200 schrieb WM:
    On 25.09.2024 13:55, Richard Damon wrote:

    It shows that NUF(x) itself is the source of the giberish, as it
    presumes things that don't actually exist,

    It is a mathematical function. It is assumed to see dark numbers. You
    believe that infinitely many of the smallest fractions cannot be distinguished. So you believe in dark numbers too.
    How could it see them?
    We can "distinguish" them.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to All on Wed Sep 25 16:39:47 2024
    Am Wed, 25 Sep 2024 17:51:56 +0200 schrieb WM:
    On 25.09.2024 06:59, Jim Burns wrote:
    On 9/24/2024 4:37 PM, WM wrote:

    Thus increasing NUF(x) from 0 to infinity WITH intermediate steps
    is gibberish,
    The correct (different) alternative is: infinitely.many
    unit.fractions at one point per unit.fraction,
    That means NUF increases by 1 at every point occupied by a unit
    fraction.
    Thus it increases to infinity at every positive point.

    with infinitely.many points in all.
    NUF(x) distinguishes all points.
    How does it distinguish dark points?

    Although no more than finitely.many points can be stepped.through end.to.end we don't require these points to do more than _exist_ More.than.finitely.many can _exist_
    Yes, but they are dark.
    NUF increases. At no point it can increase by more than 1.
    Right, and there is no point "next to" 0, so it doesn't actually
    "increase" by your not-definition at 0.

    Even if most mathematicians are far too stupid to understand this, I
    will repeat it on and on, maybe that sometime some will get it.
    You should try explaining it a different way.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to All on Wed Sep 25 16:43:32 2024
    Am Wed, 25 Sep 2024 17:23:41 +0200 schrieb WM:
    On 25.09.2024 13:53, Richard Damon wrote:
    On 9/24/24 3:43 PM, WM wrote:

    I think that mathematics of fractions is correct.
    It contains ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 from which follows that never >>> two different5 fractions sit upon each other. From NUF(0) = 0 the
    smallest unit fraction follows immediately, From it the largest
    natural number.
    Except that there doesn't exist a largest natural number, BY
    DEFINITION,
    That may be. Then there are no complete sets, no actual infinity. Good
    for maths, bad for matheology.
    "Actual" doesn't mean "finite".

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From Moebius@21:1/5 to All on Wed Sep 25 18:53:49 2024
    On 9/24/24 3:43 PM, WM wrote:

    I think that [the] mathematics of fractions is correct.
    It contains ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 from which follows that never >>>> two different5 fractions sit upon each other. From NUF(0) = 0 the
    [existence of the] smallest unit fraction follows immediately

    Proof?

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  • From Richard Damon@21:1/5 to All on Wed Sep 25 12:57:33 2024
    On 9/25/24 11:23 AM, WM wrote:
    On 25.09.2024 13:53, Richard Damon wrote:
    On 9/24/24 3:43 PM, WM wrote:

    I think that mathematics of fractions is correct.
    It contains ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 from which follows that never >>> two different5 fractions sit upon each other. From NUF(0) = 0 the
    smallest unit fraction follows immediately, From it the largest
    natural number.

    Except that there doesn't exist a largest natural number, BY DEFINITION,

    That may be. Then there are no complete sets, no actual infinity. Good
    for maths, bad for matheology.

    Regards, WM




    But of course there is a complete set, it is just infinite so you can't
    make it in finite work as your finite logic requires.

    Your problem is your "math" just can't handle actually infinite things.

    Sorry, your mind is just all exploded from the contradictions created by
    your finite logic being applied to things it can't handle.

    Your putting doen of "mathology" is just your admission that you are
    just as stupid as the flat-earthers who ignore the actual evidence.

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  • From Richard Damon@21:1/5 to All on Wed Sep 25 13:02:02 2024
    On 9/25/24 11:09 AM, WM wrote:
    On 24.09.2024 22:51, joes wrote:
    Am Tue, 24 Sep 2024 21:38:17 +0200 schrieb WM:
    On 24.09.2024 10:00, joes wrote:
    Am Sun, 22 Sep 2024 15:28:38 +0200 schrieb WM:

    Really existing sets of real unit fractions have two ends.
    What is „an end”?
    An end is where nothing follows.
    Does it need to be a member of the set?

    The end is a member of the set. But in many cases it is invisible and
    only proved by the fact that there is a smaller infimum or a larger
    supremum.

    Regards, WM

    But not all sets have "ends" that are members of the set.

    Your assumption that they do is just invalid.

    For instance, the "end" of the set of x > 0 is the value x = 0, which is
    not a member of the set.

    for *ANY* x > 0, it can't be the end, as x/2 will exists and be below it.

    You can't get around it by calling it "invisible" as that isn't a
    defined term for this, just an artifact of your exploded to smithereens
    logic system that can't actually handle really infinite sets.

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  • From Richard Damon@21:1/5 to All on Wed Sep 25 13:05:59 2024
    On 9/25/24 11:26 AM, WM wrote:
    On 25.09.2024 13:54, Richard Damon wrote:
    On 9/24/24 3:38 PM, WM wrote:
    On 24.09.2024 10:00, joes wrote:
    Am Sun, 22 Sep 2024 15:28:38 +0200 schrieb WM:

    Really existing sets of real unit fractions have two ends.
    What is „an end”?

    An end is where nothing follows.

    And thus the lower end of the numbers x > 0 would be 0, a value not in
    the set, as the set doesn't have a lower end in it.

    If it is a set (actual infinity), then the set has a smallest member.
    But that is hard to understand.

    But it doesn't, because you concept of "actual infinity" isn't actually infinite, but an illogical contradiction cause by the explosion of your
    logic system when used outside its valid operating conditions.


    That is why there is no smallest positive real or unit fraction.

    It is easier to understand with unit fractions. But most mathematicians
    are too stupid even for this obvious fact.

    But even for unit fractions, 1/(n+1) is still a smaller unit fraction
    than 1/n.

    Your logic just tries to make the INFINITE set of Natural Numbers finite because it cant handle the infinite.

    If there was an n that was the smallest unit fraction, then NUF(1) would
    be n, not infinity, and you just prove that you logic can't handle the
    actual infinite set of Natural Numbers.


    Regards, WM


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  • From Richard Damon@21:1/5 to All on Wed Sep 25 13:12:07 2024
    On 9/25/24 11:28 AM, WM wrote:
    On 25.09.2024 13:58, Richard Damon wrote:
    On 9/24/24 4:37 PM, WM wrote:

    The alternative is that the unit fractions keep getting closer and
    closer without limit.

    Either they occupy one point or NUF will distinguish them.

    Regards, WM

    No, they are all different, and NUF just jumps because there is no first
    point for it to count at.

    Or, are you admitting that 1/n - 1/(n+1) might be zero in your logic.

    The problem is that it turns out the NUF(x) NEVER actually "increments"
    by 0ne at any finite point, it jumps from 0 to infinity (Aleph_0) in the unboundedly small gap between 0 and all x > 0, and never increases after
    that, as once it get to Aleph_0, we have the fact that Aleph_0 + 1 is
    still Aleph_0.

    Defining something based on non-existant entities isn't good for a basis
    of a logic system.

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  • From Jim Burns@21:1/5 to Ross Finlayson on Wed Sep 25 13:11:36 2024
    On 9/24/2024 11:03 PM, Ross Finlayson wrote:
    On 09/24/2024 02:47 PM, Ross Finlayson wrote:
    On 09/24/2024 01:35 PM, Ross Finlayson wrote:
    On 09/24/2024 10:22 AM, Jim Burns wrote:
    On 9/20/2024 5:15 PM, Ross Finlayson wrote:

    Then these lines-reals these iota-values
    are about the only "standard infinitesimals"
    there are: with extent you observe, density
    you observe, least-upper-bound as trivial,
    and measure as assigned, length assignment.

    Lines with the least.upper.bound property
    (equivalent to "crossing must intersect")
    do not have infinitesimals.

    For example,
    there are no infinitesimals
    between 0 and all the _finite_ unit.fractions.

    ⎛ Each positive point has
    ⎜ a finite unit.fraction between it and 0

    ⎜⎛ Otherwise,
    ⎜⎜ greatest.lower.bound β of finite unit.fractions
    ⎜⎜ is positive, and
    ⎜⎜ not.bounding 2⋅β > finite ⅟k
    ⎜⎜ ½⋅β > ¼⋅⅟k
    ⎜⎜ β > ½⋅β > ¼⋅⅟k
    ⎜⎜ greatest.lower.bound β is not.bounding,
    ⎝⎝ which is gibberish.

    Well now, there are as many kinds infinitesimals
    as there are infinities,

    In this discussion, by 'infinitesimal', I mean
    a point δ between 0 and all finite.unit.fractions.
    infinitesimal δ :⇔
    ∀k ∈ ℕ: 0 < δ < ⅟k ⇔
    0 < δ ≤ᵉᵃᶜʰ ⅟ℕ

    β = greatest.lower.bound of finite.unit.fractions
    ∀ᴿr: r ≤ᵉᵃᶜʰ ⅟ℕ ⇒ r ≤ β ≤ᵉᵃᶜʰ ⅟ℕ

    ℕ is well.ordered and (≠0) nexted
    ∀S ⊆ ℕ: S={} ∨ ∃k ∈ S: k ≤ᵉᵃᶜʰ S
    ∀j ∈ ℕ: ∃!k ∈ ℕ\{0}: j+1=k
    ∀k ∈ ℕ\{0}: ∃!j ∈ ℕ: j+1=k
    ∀j ∈ ℕ: j < j+1 ∧ ¬∃k ∈ ℕ: j < k < j+1

    lemma:
    ¬∃δ: 0 < δ ≤ᵉᵃᶜʰ ⅟ℕ
    There are no infinitesimals like that.

    My current purpose is to dissuade
    believers in a smallest unit.fraction
    from believing in a smallest unit.fraction.

    Do you (RF) think that other systems of infinitesimals
    might be of use in that discussion?
    If you think so, why do you?

    and all in a general sense differing in
    differences quite clustered about zero,
    make for that Peano, Dodgson, Veronese,
    Stolz, Leibniz, MacLaurin, Price,
    the entire field of infinitesimal analysis as
    what real analysis was named for hundreds of years,
    make for that even Robinson's
    rather modest and of no analytical character
    the hyper-reals, or
    as among Conway's surreal numbers,
    has that most people's ideas of infinitesimals
    are exactly as an infinite of them in [0,1],
    constant monotone strictly increasing,
    as with regards to "asymptotic equipartitioning"
    and other aspects of higher, and lower, mathematics.

    Newton's "fluxions", Aristotle's contemplations and
    deliberations about atoms, Zeno's classical expositions,
    quite a few of these have infinitesimals all quite
    throughout every region of the linear continuum.

    Maybe Hardy's pure mathematics makes for conflating
    the objects of geometry, points and lines, with
    a descriptive set theory's, a theory with only
    one relation and only one-way, point-sets, yet
    for making a theory with them all together,
    makes for that since antiquity and through
    today, notions like Bell's smooth analysis,
    and Nelson's Internal Set Theory, if you
    didn't know, each have that along the linear
    continuum: are not "not infinitesimals".

    Here these "iota-values" are considered
    "standard infinitesimals".

    Then, in the complete ordered field,
    there's nothing to say about them
    except nothing, well, some have that
    its properties of least-upper-bound
    and measure are actually courtesy already
    a more fundamental continuum, in the theory,
    as a constant, and not just stipulated
    to match expectations.

    The MacLaurin's infinitesimals and then for
    Price's textbook "Infinitesimal Analsysis",
    from the mid 1700's through the late 1800's
    and fin-de-siecle, probably most closely match
    the fluxion and Leibniz's notions, our notions,
    while, "iota-values" are after the particular
    special character of the special function,
    the natural/unit equivalency function, in
    as with regards to plural: laws of large numbers,
    models of real numbers, definitions of continuity,
    models of Cantor space, and this as with being
    sets in a set theory, obviously extra-ordinary.

    Or, iota-values are consistent, and constructive,
    and their (relevant) properties decide-able,
    in descriptive set theories about a linear continuum,
    like today's most well-known, ZFC, and its models
    of a continuous domain: extent density completeness measure.




    There's also Cavalieri to consider,
    and Bradwardine from the Mertonian school
    about De Continuo, where sometimes it's
    said that Cavalieri in the time of Galileo
    formalized infinitesimals.

    https://www.youtube.com/watch?v=EyWpZQny5cY&t=1590
    "Moment and Motion: meters, seconds, orders, inverses"

    Of course most people's usual ideas about
    infinitesimals are what's called "atomism".
    This is Democritus vis-a-vis Eudoxus.


    Wow, it's like I just mentioned the conversation
    here where was defined "continuous topology"
    as "own initial and final topology".




    Cantor of course had an oft-repeated opinion
    on infinitesimals: "bacteria". This was after the
    current theory of the day of bacteria vis-a-vis miasma
    as the scientific source of disease, while these days
    it's known that there are symbiotic bacteria,
    while miasmas are still usually considered bad.
    He though was happy to ride Russell's retro-thesis,
    after borrowing Heine's result in trigonometric series,
    which though has some reasonings where it's not so,
    and collecting the anti-diagonal from duBois-Reymond,
    nested intervals from Pythagoras, and this kind of thing.


    Poincare didn't much concur.

    Euler'd been kind of like "notice I move things around
    in my infinite series", with regards to it's sort of like
    he took the maxim of the lever as that he was the origin.
    Yet, the resulting Euler's identity and Eulerian/Gaussian
    analysis has its own sort of crazing as with regards
    to the veneer of the analysis. It's considered
    "standard", though.

    Leibniz treated the differential as an algebraic
    quantity, MacLaurin sort of righted that with
    regards to fluent and fluxion, yet, sometimes
    it's so, varies how and why it's so.


    Then, for something like George Berkley's
    infinitesimals as "ghosts of a departed quantity",
    you can read about as much into that as something
    like George Carlin and "infinities are so profound I'm profane".


    Then after Leibniz there's nil-potent and particularly
    nil-square, as what descends these days to that "the
    only standard infinitesimal is zero", or as with regards
    to that otherwise what results are tiny, yet standard
    quantities, what in an infinite series may appreciate.

    Of course for things like non-linear analysis and where
    what otherwise the nil-square washes out as obviated
    by triangle, Cauchy-Schwartz, Holder inequality and so on,
    it's part of the field about where it's resulted non-negligeable,
    as with regards to usually nil-potent and nil-square.


    Anyways you can often find that if something like
    Hilbert said that infinitary reasoning is the finest
    creation of the human mind, it's in a wide variety.


    So, yeah, pretty much any matters of "non-" standard
    analysis, of course in no way contradict standard real
    analysis at all, instead their being "super-" standard.

    ... Because Eudoxus/Cauchy/Dedekind is insufficient, or,
    at least it's known "at best: incomplete".


    Anyways: Democritus and atomism, and Eudoxus and the
    Pythagorean and the Archimedean and the field, have
    at least that Aristotle describes both as theoretically
    so, like line-reals and field-reals, then though he
    picks field-reals as he simply wasn't an atomist, for
    Aristotle's substances and forms and Platonism.

    Which here is a retro-Heraclitan dual-monism so that
    increment and equi-partition build arithmetic together.




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  • From Richard Damon@21:1/5 to All on Wed Sep 25 13:19:33 2024
    On 9/25/24 11:32 AM, WM wrote:
    On 25.09.2024 13:55, Richard Damon wrote:

    It shows that NUF(x) itself is the source of the giberish, as it
    presumes things that don't actually exist,

    It is a mathematical function. It is assumed to see dark numbers. You
    believe that infinitely many of the smallest fractions cannot be distinguished. So you believe in dark numbers too.

    Regards, WM



    No, it is based on LIES and IGNORANCE. YOU ASSUME that it sees dark
    numbers, that you can't show exist, except by the "function" you create
    based on that assumption, and thus your logic is built on your own lies.

    I do NOT believe that there ANY "smallest" factions that cannot be distingusished, I know such a thing does not exist, and that ALL unit fractions, like all rationals and reals can be distinguished,

    So, you are just admitting that you don't know what you are talking
    about but are just a totally ignorant liar.

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  • From Richard Damon@21:1/5 to All on Wed Sep 25 13:22:30 2024
    On 9/25/24 11:14 AM, WM wrote:
    On 24.09.2024 23:47, FromTheRafters wrote:
    on 9/24/2024, WM supposed :

    The function NUF(0) increases. ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 proves that >>> it can gain only one unit fraction at any point x ∈ ℝ, hence NUF has >>> to pass the value 1.

    It means "For all" and says nothing about starting somewhere, moving,
    and ending somewhere else.

    Whatever it means. I see that there are no unit fractions below 0 and
    many above 0. Therefore NUF increases. At no point it can increase by
    more than 1.

    Why not? The problem is that points are "dense" so you can't find a
    "first" point to start at.

    At no point can it increase by one, as to go from a finite value to one
    higher, it needs to only have a finite number of unit fractions below
    it, but there is no first unit fraction to start the count, and at any
    finite value, since it has already gotten to Aleph_0, that can't be
    incrmented by one.

    So, your NUF just is built on false concepts.


    Even if most mathematicians are far too stupid to understand this, I
    will repeat it on and on, maybe that sometime some will get it.

    No, YOU are just too stupid because you think in terms of finite sets.


    Regards, WM


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  • From Richard Damon@21:1/5 to All on Wed Sep 25 13:25:07 2024
    On 9/25/24 11:33 AM, WM wrote:
    On 25.09.2024 13:59, Richard Damon wrote:
    On 9/24/24 3:35 PM, WM wrote:

    Yes, it increases, but there is no point that in can increase to 1, so
    it just jumps to infinity.

    That means infinitely many cannot be distinguished. That is what I call
    dark numbers.


    Regards, WM


    Why do you say that,

    What values, that EXIST, can't be distinguished.

    The fact that there is no first, doesn't mean that there are any that
    can't be distinguished, just that you "logic" is built on false ideas.

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  • From Richard Damon@21:1/5 to All on Wed Sep 25 13:28:13 2024
    On 9/24/24 3:30 PM, WM wrote:
    On 23.09.2024 20:53, Jim Burns wrote:

    Because largest.number m is gibberish.

    The largest number that you can choose depends on your facilities.
    Consider the largest number available on your pocket calculator.

    Regards, WM


    Which just shows that your pocket calculator can't handle the set of off numbers (be it Natural, Rational, or Real).

    Mathematics isn't based on what WE can do, but on what the numbers
    themselves can do, and there existance isn't dependent on what we can
    "think of" but what comes out of there generative definition.

    That this is beyond your comprehension isn't a limitation of
    mathematics, but of YOU.

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  • From Jim Burns@21:1/5 to All on Wed Sep 25 14:40:18 2024
    On 9/25/2024 11:51 AM, WM wrote:
    On 25.09.2024 06:59, Jim Burns wrote:
    On 9/24/2024 4:37 PM, WM wrote:
    On 24.09.2024 22:19, Jim Burns wrote:

    Thus
    increasing NUF(x) from 0 to infinity
    WITH intermediate steps
    is gibberish,

    The only alternative would by
    infinitely many unit fractions at one point.

    The correct (different) alternative is:
    infinitely.many unit.fractions
    at one point per unit.fraction,

    That means NUF increases by 1
    at every point occupied by a unit fraction.

    There are numbers (cardinalities) which increase by 1
    and other numbers (cardinalities), which
    don't increase by 1.

    We call them, respectively, 'finite' and 'infinite'.
    You (WM) apparently think that means something else,
    something like "reallyreallyreally big".

    For each positive point x
    for each number (cardinality) k which can increase by 1
    there are more.than.k unit.fractions between 0 and x
    0 > ⅟⌈k+1+⅟x⌉ < ... < ⅟⌈1+⅟x⌉ < x

    For each positive point x
    the number (cardinality) of unit.fractions between 0 and x
    is not
    any number (cardinality) which increases by 1
    Instead, it is
    a number (cardinality) which doesn't increase by 1.

    That means NUF increases by 1
    at every point occupied by a unit fraction.

    At each point x occupied by a unit.fraction,
    NUF(x) = |⅟ℕ∩(0,x]| > |⟨⅟⌈k+1+⅟x⌉,...,⅟⌈1+⅟x⌉⟩| is
    a number (cardinality) which doesn't increase by 1.

    with infinitely.many points in all.

    NUF(x) distinguishes all points.

    ∀ᴿx₁>0: ∀ᴿx₂>0: NUF(x₁) = ℵ₀ = NUF(x₂)

    Although
    no more than finitely.many points
    can be stepped.through end.to.end
    we don't require these points to do more than _exist_

    More.than.finitely.many can _exist_

    Yes, but they are dark.

    Each positive point is undercut by
    some finite.unit.fraction.
    [Archimedean property (Otto Stolz)]

    [...] I will repeat it on and on, [...]

    Repetition is apparently
    what you (WM) think mathematics is:
    🛇 "I refuse to concede" ⇒
    🛇 "I have a theorem"

    --- SoupGate-Win32 v1.05
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  • From Moebius@21:1/5 to All on Wed Sep 25 21:56:18 2024
    Am 25.09.2024 um 21:35 schrieb Chris M. Thomasson:
    On 9/25/2024 8:26 AM, WM wrote:

    If it is a set (actual infinity), then the set has a smallest member.
    But that is hard to understand.

    Yeah, "truths" that are WRONG are usually "hard to understand".

    It is easier to understand with unit fractions. But most
    mathematicians are too stupid even for this obvious fact.

    Yeah, only Mückenheim can comprehend the validity of this falsehood.
    :-)

    --- SoupGate-Win32 v1.05
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  • From Jim Burns@21:1/5 to Ross Finlayson on Wed Sep 25 17:00:15 2024
    On 9/25/2024 2:44 PM, Ross Finlayson wrote:
    On 09/25/2024 10:11 AM, Jim Burns wrote:

    [...]

    How would you define "atom"
    the otherwise "infinitely-divisible"?

    I would proceed by defining
    a non.existent definiendum.

    It's not a problem to define
    a definiendum which doesn't exist.

    It is a problem to interpret a definition as
    a claim that its definiendum exists.
    I strongly recommend against doing that.

    In a similar vein, define d to be
    a positive lower.bound of finite.unit.fractions.

    The interpretation of the definition of d as
    a claim that d exists
    makes impossibilities necessary.
    Necessary impossibilities are a problem.

    But we can avoid that problem by
    _not_ doing that, by
    concluding that d does not exist.

    That is most of the argument that,
    in the Dedekind.complete line,
    there are no infinitesimals
    (AKA points between 0 and unit.fractions).

    Defining non.existent objects can be
    even better than non.disastrous.
    It can be downright useful to do so.

    It's seems quite Aristotlean to be against atomism,
    yet, at the same time
    it's a very useful theory,
    for example, with Democritan chemistry, atomic chemistry,
    and stoichiometry.

    This is foundations under consideration here,
    not merely "pre-calc".

    I think we don't choose foundations which
    choose for us what is to be built on them.
    (I think they shouldn't, so, Yay!)

    ℝ is anti-atomic, that is, without infinitesimals.

    And yet, ℝ is very useful for describing solutions to
    the hydrogen.atom Hamiltonian ̂H = ̂p²/2m - e²/̂r

    The periodic table and the complete ordered field
    seem to connect differently from
    the way i which you (RF) think they connect.

    --- SoupGate-Win32 v1.05
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  • From Jim Burns@21:1/5 to Ross Finlayson on Thu Sep 26 09:48:31 2024
    On 9/25/2024 9:50 PM, Ross Finlayson wrote:
    On 09/25/2024 02:00 PM, Jim Burns wrote:
    On 9/25/2024 2:44 PM, Ross Finlayson wrote:

    How would you define "atom"
    the otherwise "infinitely-divisible"?

    It's seems quite Aristotlean to be against atomism,

    I am anti.atomized.ℝ (complete ordered field)
    You seem to read that as anti.atomized.anything.

    How do I make claims to you (RF) which
    are only about the things I intend?

    For example, how do I claim to you (RF),
    for a right triangles but not for any triangle, that
    ⎛ the square of its longest side equals
    ⎝ the sum of the squares of its two other sides
    ?

    yet, at the same time
    it's a very useful theory,
    for example, with Democritan chemistry, atomic chemistry,
    and stoichiometry.

    This is foundations under consideration here,
    not merely "pre-calc".

    I think we don't choose foundations which
    choose for us what is to be built on them.
    (I think they shouldn't, so, Yay!)

    ℝ is anti-atomic, that is, without infinitesimals.

    And yet, ℝ is very useful for describing solutions to
    the hydrogen.atom Hamiltonian ̂H = ̂p²/2m - e²/̂r

    The periodic table and the complete ordered field
    seem to connect differently from
    the way i which you (RF) think they connect.

    "you know I wrote a paper about the
    infinitesimals with measurable character
    in Nelson's Internal Set Theory, IST,
    that IST, was co-consistent, with ZFC,
    Zermelo-Fraenkel set theory".

    I'd bet a large amount of money that those
    infinitesimals with measurable character
    aren't in the complete ordered field,
    but instead are in something else.

    Am I wrong?

    About foundations, then it seems
    that reflects on what Leibniz and others call,
    "the fundamental question of meta-physics",
    then why there's any one theory at all.
    (Truth, ....)

    I think we don't choose foundations which
    choose for us what is to be built on them.

    There is the question of what the continuum is.
    Ideally,
    that would not be settled by
    which foundation we have chosen,
    but by exo.logical considerations,
    and, ideally,
    it is _those considerations_ which are reflected in
    properties like least.upper.bound.

    If
    we want a continuum containing the rationals and
    in which crossing curves intersect,
    then
    we do not have points between 0 and unit.fractions.

    If
    we want something else,
    then
    something else might well be true.

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Sat Sep 28 07:30:58 2024
    On 9/27/24 3:06 PM, WM wrote:
    On 25.09.2024 19:12, Richard Damon wrote:

    The problem is that it turns out the NUF(x) NEVER actually
    "increments" by 0ne at any finite point, it jumps from 0 to infinity
    (Aleph_0) in the unboundedly small gap between 0 and all x > 0,

    How do you distinguish them?

    Regards, WM


    They all have different values, so why can't you distinguish them.

    THey are all based on different Natural Numbers, so why can't you
    distinguish them?

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Sat Sep 28 07:24:03 2024
    On 9/27/24 2:54 PM, WM wrote:
    On 25.09.2024 20:40, Jim Burns wrote:
    On 9/25/2024 11:51 AM, WM wrote:

    That means NUF increases by 1
    at every point occupied by a unit fraction.

    There are numbers (cardinalities) which increase by 1
    and other numbers (cardinalities), which
    don't increase by 1.

    No. Every countable set is countable, i.e., it increases one by one.

    Its indexes increase one by one.

    And for a countably INFINITE set, like the Natural Numbers, there is
    only one end you can count from.

    Your problem is you try to make the Naturals just "finite countable",
    which has the sort of properties you can handle, when they are actually infinitely countable.



    For each positive point x
    for each number (cardinality) k which can increase by 1
    there are more.than.k unit.fractions between 0 and x

    That is a misinterpretation of the law valid for small numbers.

    No, it applies for *ALL* numbers.


    For each positive point x
    the number (cardinality) of unit.fractions between 0 and x
    is not
    any number (cardinality) which increases by 1
    Instead, it is
    a number (cardinality) which doesn't increase by 1.

    For every x NUF increases by not more than 1.

    No, for every finite x, NUF doesn't increase at all, since for ALL
    finite values x > 0, it has already reached an infinte value of Aleph_0,
    and that doesn't increase when incremented.


    Each positive point is undercut by
    some finite.unit.fraction.

    Repetition is apparently what you (JB) think mathematics is!

    Nope, that is YOUR failing, you keep repeating your own lies that come
    out of your ignorance.


    Prove that ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 is wrong or agree.

    It it true, and proves that there is no smallest unit fraction as it
    says for EVERY 1/n there is a 1/(n+1) < 1/n, and since for all n, there
    IS a n+1 (as part of the DEFINITION of the Natural Numbers) so you claim
    is just disproven, and you are shown to be a stupid liar.

    Of course, your responce will be that there isn't always an n+1, but
    that just proves you don't understand what the Natural Nubmers are, and
    never did, and thus your whole premise is based on ignorant lies.


    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Sat Sep 28 09:05:11 2024
    On 9/27/24 3:04 PM, WM wrote:
    On 25.09.2024 19:19, Richard Damon wrote:
    On 9/25/24 11:32 AM, WM wrote:

    I do NOT believe that there ANY "smallest" factions that cannot be
    distingusished, I know such a thing does not exist, and that ALL unit
    fractions, like all rationals and reals can be distinguished,

    The claim of all requires a last one.

    Regards, WM


    Why?

    That is just FINITE thinking, which shows your ignorance.

    All means All, and if it is about an infinte set, there is no "end"

    You are just caught in a world of contradictiory logic caused by your stupidity.

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Sat Sep 28 08:58:55 2024
    On 9/27/24 3:06 PM, WM wrote:
    On 25.09.2024 19:12, Richard Damon wrote:

    The problem is that it turns out the NUF(x) NEVER actually
    "increments" by 0ne at any finite point, it jumps from 0 to infinity
    (Aleph_0) in the unboundedly small gap between 0 and all x > 0,

    How do you distinguish them?

    Regards, WM


    They have different values, so why can't you?

    If the question is how to distinguish the VALUE of NUF(x) at different
    x, you CAN'T for all x > 0, as it is always the same value, even after "incrementing" it for passing a unit fraction.

    You seem to have a funny-mental issue that you don't understand that
    different numbers ARE different, and are defined, and that infinity
    doesn't act the same as finite numbers, and trying to make it work the
    same just breaks your logic.

    The problem you run into is that a "first" fraction doesn't exist, so
    you can't "distinguish" it, not because there is something wrong with
    that number, but because such a thing just doesn't exist.

    The issue isn't what color is a red ball that is green, it is where do
    you find such a contradictory thing.

    Your assumption of a "first point" after zero is just the proof of your insantity,

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Sat Sep 28 09:09:01 2024
    On 9/27/24 3:02 PM, WM wrote:
    On 25.09.2024 19:22, Richard Damon wrote:
    On 9/25/24 11:14 AM, WM wrote:
    NUF increases. At no point it can increase by more than 1.

    Why not?

    Because there is a finite gap between two unit fractions.

    Regards, WM

    Yes, but there is no "first" point, nor "adjacent" points, so the
    concept of "increase at a point" is meaningless.

    It has an increase BETWEEN two points, and that is based on the number
    of unit fractions in that interval.

    Between 0 and ANY finte unit fraction, is an infinte number of unit
    fractions, so NUF(x) increases infintely.

    You just don't understand how numbers work when they are parts of
    infinite sets, as you mind can't handle the concept.

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Sat Sep 28 09:12:33 2024
    On 9/27/24 3:00 PM, WM wrote:
    On 25.09.2024 19:25, Richard Damon wrote:

    What values, that EXIST, can't be distinguished.

    You cannot distinguish the ℵo smallest unit fractions. You cannot select
    a unit fractions with less smaller unit fractions.

    Regards, WM



    That isn't what "distinguishes" means.

    Since there doesn't exist a unit fraction with less than Aleph_0 unit
    fractions below it, your question is just a demonstartion of your
    stupidity and lack of understanding of how infinite sets work.


    You "Logic" seems to be based on lying about the existance of things
    that don't exist.

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Sat Sep 28 09:14:42 2024
    On 9/27/24 2:57 PM, WM wrote:
    On 25.09.2024 19:28, Richard Damon wrote:
    On 9/24/24 3:30 PM, WM wrote:

    The largest number that you can choose depends on your facilities.
    Consider the largest number available on your pocket calculator.

    Mathematics isn't based on what WE can do, but on what the numbers
    themselves can do,

    They cannot do anything. They simply are created in potential infinity
    or are there in actual infinity.

    Regards, WM


    So, you think something can be "created" but is not "there"?

    And Numbers do "do" things, as mathematics is about how the numbers
    interact with each other.

    Sorry, you are just proving your stupidity.

    --- SoupGate-Win32 v1.05
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  • From Moebius@21:1/5 to All on Sat Sep 28 22:07:49 2024
    Am 28.09.2024 um 06:19 schrieb Chris M. Thomasson:
    On 9/27/2024 11:57 AM, WM wrote:
    On 25.09.2024 19:28, Richard Damon wrote:
    On 9/24/24 3:30 PM, WM wrote:

    The largest number that you can choose depends on your facilities.
    Consider the largest number available on your pocket calculator.

    Mathematics isn't based on what ___we can do___, but on

    the __properties__ of the mathematical objects (we consider).

    --- SoupGate-Win32 v1.05
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  • From Moebius@21:1/5 to All on Sat Sep 28 22:11:27 2024
    Am 28.09.2024 um 06:20 schrieb Chris M. Thomasson:
    On 9/27/2024 11:42 AM, WM wrote:
    On 25.09.2024 18:39, joes wrote:
    Am Wed, 25 Sep 2024 17:51:56 +0200 schrieb WM:

    NUF(x) distinguishes all points.
    How does it distinguish dark points?

    By our mathematical knowledge about ∀n ∈ ℕ: 1/n - 1/(n+1) > 0

    NUF increases. At no point it can increase by more than 1.
    Right, and there is no point "next to" 0

    There is a unit fraction next to 0. [WM]

    No, there isn't. If u is a unit fraction, then u' = 1/(1/u + 1) is a
    unit fraction such that 0 < u' < u.

    Next as in closer and closer forevermore? ;^)

    --- SoupGate-Win32 v1.05
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  • From Moebius@21:1/5 to All on Sat Sep 28 22:16:47 2024
    Am 28.09.2024 um 06:26 schrieb Chris M. Thomasson:
    On 9/27/2024 3:13 PM, FromTheRafters wrote:
    WM expressed precisely :
    On 25.09.2024 19:22, Richard Damon wrote:
    On 9/25/24 11:14 AM, WM wrote:

    NUF increases

    No, it "jumps at 0".

    MEANING: NUF(0) = 0 and Ax > 0: NUF(0) = aleph_0.

    At no point it can increase by more than 1.
    Why not?

    Because there is a finite gap between two [adjacent] unit fractions.

    Using WM's mantra: An e IN: 1/n - 1/(n + 1) > 0.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Sat Sep 28 22:20:12 2024
    Am 28.09.2024 um 06:26 schrieb Chris M. Thomasson:
    On 9/27/2024 3:13 PM, FromTheRafters wrote:
    WM expressed precisely :
    On 25.09.2024 19:22, Richard Damon wrote:
    On 9/25/24 11:14 AM, WM wrote:

    NUF increases

    No, it "jumps at 0".

    MEANING: NUF(0) = 0 and Ax > 0: NUF(x) = aleph_0.

    At no point it can increase by more than 1.
    Why not?

    Because there is a finite gap between two [adjacent] unit fractions.

    Using WM's mantra: An e IN: 1/n - 1/(n + 1) > 0.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Sat Sep 28 22:22:20 2024
    Am 28.09.2024 um 22:06 schrieb Chris M. Thomasson:

    Here, I'm thinking of gaps as meaning places where a cauchy sequence
    does not converge to a member of the set but somehow would fit between
    them in an extended domain which included that element.

    [In this sense] there are [...] gaps [in Q]?

    For example, sqrt(2) is missing in Q.

    It's infinitely dense.

    True, but doesn't help!

    --- SoupGate-Win32 v1.05
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  • From Moebius@21:1/5 to All on Sat Sep 28 22:19:18 2024
    Am 28.09.2024 um 22:06 schrieb Chris M. Thomasson:

    Here, I'm thinking of gaps as meaning places where a cauchy sequence
    does not converge to a member of the set but somehow would fit between
    them in an extended domain which included that element.

    Wrt to R, there are [...] gaps [in Q]?

    For example, sqrt(2) is missing in Q.

    It's infinitely dense.

    True, but doesn't help!

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Sat Sep 28 22:28:36 2024
    Am 28.09.2024 um 22:20 schrieb Moebius:
    Am 28.09.2024 um 06:26 schrieb Chris M. Thomasson:
    On 9/27/2024 3:13 PM, FromTheRafters wrote:
    WM expressed precisely :
    On 25.09.2024 19:22, Richard Damon wrote:
    On 9/25/24 11:14 AM, WM wrote:

    NUF increases

    No, it "jumps at 0".

    MEANING: NUF(0) = 0 and Ax > 0: NUF(x) = aleph_0.

    At no point it can increase by more than 1.
    Why not?

    Because there is a finite gap between two [adjacent] unit fractions.

    Using WM's mantra: An e IN: 1/n - 1/(n + 1) > 0.

    @Mückenheim: Ax > 0: NUF(x) = aleph_0 besagt GENAU, dass für jedes x e
    IR mit x > 0 _abzählbar unendlich_ viele Stammbrüche in (0, x) enthalten sind. Und das ist auch richtig (denn es ist so).

    Der Umstand, dass trivialerweise An e IN: 1/n - 1/(n + 1) > 0 gilt, tut
    dem keinen Abbruch; auch wenn Du zu doof und zu blöde bist, um das zu verstehen.

    --- SoupGate-Win32 v1.05
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  • From Moebius@21:1/5 to All on Sat Sep 28 22:36:35 2024
    Am 28.09.2024 um 22:28 schrieb Moebius:

    @Mückenheim: Ax > 0: NUF(x) = aleph_0 besagt GENAU, dass für jedes x e
    IR mit x > 0 _abzählbar unendlich_ viele Stammbrüche in (0, x) enthalten sind. Und das ist auch richtig (denn es ist so).

    Der Umstand, dass trivialerweise An e IN: 1/n - 1/(n + 1) > 0 gilt, tut
    dem keinen Abbruch; auch wenn Du zu doof und zu blöde bist, um das zu verstehen.

    Hinweis: Die Distanz 1/n - 1/(n + 1) nimmt mit wachsendem n "monoton"
    ab. Tatsächlich ist (1/n - 1/(n + 1))_(n e IN) eine Nullfolge. Es gilt
    sogar:

    SUM_(n=1..oo) 1/n - 1/(n + 1) = 1 .

    D. h. (abzählbar) unendlich viele Stammbrüche haben in [0, 1] Platz.
    (Was ja eigentlich _schon von vorneherein_ klar ist, da trivialerweise
    für alle n e IN 0 < 1/n <= 1 gilt.)

    Hinweis: SUM_(n=1..k) 1/n - 1/(n + 1) < 1 für k = 1, 2, 3, ...

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to FromTheRafters on Sun Sep 29 21:06:18 2024
    On 28.09.2024 12:10, FromTheRafters wrote:

    Actual completed infinity, to him, means both a first element and a last element must be present in the set.

    There must be all elements. In a linear order this implies a first and a
    last one. Without knowing that there is a last element, you cannot
    reasonable claim that all are there.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to joes on Sun Sep 29 20:52:24 2024
    On 27.09.2024 21:51, joes wrote:
    Am Fri, 27 Sep 2024 21:08:46 +0200 schrieb WM:
    On 25.09.2024 18:53, Moebius wrote:
    On 9/24/24 3:43 PM, WM wrote:

    It contains ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 from which follows that never
    two different5 fractions sit upon each other. From NUF(0) = 0 the >>>>>>> [existence of the] smallest unit fraction follows immediately
    Proof?
    Between two unit fractions there is always a finite gap.
    Duh, that is your premise.

    No, that is unavoidable mathematics.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to joes on Sun Sep 29 20:56:13 2024
    On 27.09.2024 22:12, joes wrote:
    Am Fri, 27 Sep 2024 20:42:06 +0200 schrieb WM:
    On 25.09.2024 18:39, joes wrote:
    Am Wed, 25 Sep 2024 17:51:56 +0200 schrieb WM:

    NUF(x) distinguishes all points.
    How does it distinguish dark points?
    By our mathematical knowledge about ∀n ∈ ℕ: 1/n - 1/(n+1) > 0
    How can you talk about a dark n and it’s (maybe) n+1?

    I assume that dark n exist and follow the rules of visible n, with one exception.

    NUF increases. At no point it can increase by more than 1.
    Right, and there is no point "next to" 0
    There is a unit fraction next to 0.
    Is it closer to zero or to the next UF?

    That is unknown.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to Ross Finlayson on Sun Sep 29 15:02:43 2024
    On 9/26/2024 4:50 PM, Ross Finlayson wrote:
    On 09/26/2024 06:48 AM, Jim Burns wrote:
    On 9/25/2024 9:50 PM, Ross Finlayson wrote:
    On 09/25/2024 02:00 PM, Jim Burns wrote:
    On 9/25/2024 2:44 PM, Ross Finlayson wrote:

    How would you define "atom"
    the otherwise "infinitely-divisible"?

    It's seems quite Aristotlean to be against atomism,

    I am anti.atomized.ℝ (complete ordered field)
    You seem to read that as anti.atomized.anything.

    How do I make claims to you (RF) which
    are only about the things I intend?

    For example, how do I claim to you (RF),
    for a right triangles but not for any triangle, that
    ⎛ the square of its longest side equals
    ⎝ the sum of the squares of its two other sides
    ?

    I enjoy reading that, Jim, if I may be so familiar,
    I enjoy reading that because it sounds _sincere_,
    and, it reflects a "conscientiousness", given what
    there is, given the milieu, then, for given the surrounds.

    Thank you.

    I am anti.atomized.ℝ (complete ordered field)
    You seem to read that as anti.atomized.anything.

    How do I make claims to you (RF) which
    are only about the things I intend?

    For example, how do I claim to you (RF),
    for a right triangles but not for any triangle, that
    ⎛ the square of its longest side equals
    ⎝ the sum of the squares of its two other sides
    ?

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Sun Sep 29 21:08:29 2024
    On 28.09.2024 13:24, Richard Damon wrote:

    And for a countably INFINITE set, like the Natural Numbers, there is
    only one end you can count from.

    There is no reason to believe so if all elements are there.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Richard Damon on Sun Sep 29 21:17:36 2024
    On 28.09.2024 13:30, Richard Damon wrote:


    They all have different values, so why can't you distinguish them.

    THey are all based on different Natural Numbers, so why can't you
    distinguish them?

    Because always infinitely many remain undistinguished. They are dark.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Sun Sep 29 21:16:24 2024
    On 28.09.2024 14:58, Richard Damon wrote:
    On 9/27/24 3:06 PM, WM wrote:
    On 25.09.2024 19:12, Richard Damon wrote:

    The problem is that it turns out the NUF(x) NEVER actually
    "increments" by 0ne at any finite point, it jumps from 0 to infinity
    (Aleph_0) in the unboundedly small gap between 0 and all x > 0,

    How do you distinguish them?

    They have different values, so why can't you?

    Then distinguish the first one.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to FromTheRafters on Sun Sep 29 21:30:05 2024
    On 29.09.2024 21:21, FromTheRafters wrote:
    After serious thinking WM wrote :
    On 28.09.2024 12:10, FromTheRafters wrote:

    Actual completed infinity, to him, means both a first element and a
    last element must be present in the set.

    There must be all elements. In a linear order this implies a first and
    a last one. Without knowing that there is a last element, you cannot
    reasonable claim that all are there.

    Yes we can.

    Like Obama, the war president, making a laughing stock of the Nobel prize?

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to FromTheRafters on Sun Sep 29 21:49:13 2024
    On 28.09.2024 00:08, FromTheRafters wrote:
    WM presented the following explanation :

    Between two unit fractions there is always a finite gap.

    How big?

    In terms of set theory: uncountably many points.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From Jim Burns@21:1/5 to All on Sun Sep 29 15:56:33 2024
    On 9/27/2024 2:54 PM, WM wrote:
    On 25.09.2024 20:40, Jim Burns wrote:
    On 9/25/2024 11:51 AM, WM wrote:

    That means NUF increases by 1
    at every point occupied by a unit fraction.

    There are numbers (cardinalities) which increase by 1
    and other numbers (cardinalities), which
    don't increase by 1.

    No.

    You invoke _axiom.1_
    Every countable set is countable,
    i.e., it increases one by one.

    Axiom.1 _describes_
    what you are currently discussing.

    Axiom.1 means
    ⎛ If
    ⎜ the set of unit fraction can't increase by 1
    ⎜ then
    ⎝ we aren't discussing that set.

    Axiom.1 does not mean
    ⎛ If
    ⎜ we are discussing the set of unit fractions
    ⎜ then
    ⎝ that set can increase by 1

    We know axioms are true
    by applying them only where they are true.

    It does not work in the opposite direction,
    not the case that sets _become_ finite
    because there is an Axiom of Finity.

    What you want is
    to tell us we've been wrong about sets.

    Axioms can't do that.
    A new axiom moves the discussion.
    The (now two) discussions talk past each other.

    For each positive point x
    for each number (cardinality) k which can increase by 1
    there are more.than.k unit.fractions between 0 and x

    That is a misinterpretation of
    the law valid for small numbers.

    | "If the law supposes that," said Mr. Bumble,
    | squeezing his hat emphatically in both hands,
    | "the law is a ass — a idiot."
    |
    -- Charles Dickens, "Oliver Twist"

    Describe by axiom the unit fractions.
    Go one axiom further and
    describe √2 and the unit fractions as one more --
    and you will be wrong.

    Calling it a law only means the law is a ass.
    It doesn't mean you and the "law" are right.
    √2 → ⅟1
    ⅟1 → ⅟2
    ⅟2 → ⅟3
    ⅟3 → ⅟4
    ...

    Descriptions.

    ⎜ A unit fraction is
    ⎜ reciprocal to a naturalnumber/-0

    ⎜ A natural.number.set≠{} is minimummed.
    ⎜ A natural.number≠0 is predecessored.
    ⎝ A natural number is successored.

    For each positive point x
    the number (cardinality) of
    unit.fractions between 0 and x
    is not
    any number (cardinality) which increases by 1
    Instead, it is
    a number (cardinality) which doesn't increase by 1.

    For every x NUF increases by not more than 1.

    For every x>0 and x′>0
    NUF increases by not more and not less than 0.

    ⅟⌈1+⅟x⌉ → ⅟⌈1+⅟x′⌉
    ⅟⌈2+⅟x⌉ → ⅟⌈2+⅟x′⌉
    ⅟⌈3+⅟x⌉ → ⅟⌈3+⅟x′⌉
    ⅟⌈4+⅟x⌉ → ⅟⌈4+⅟x′⌉
    ...

    Each positive point is undercut by
    some finite.unit.fraction.

    Repetition
    is apparently what you (JB) think mathematics is!

    Sometimes.

    🎜 Aleph.naught bottles of beer on the wall,
    🎝 Aleph.naught bottles of beer.
    🎜 Take one down, pass it around,
    🎝 Aleph.naught bottles of beer on the wall.

    🎜 Aleph.naught bottles of beer on the wall,
    🎝 Aleph.naught bottles of beer.
    🎜 Take one down, pass it around,
    🎝 Aleph.naught bottles of beer on the wall.

    ...

    Each positive point is
    undercut by some finite.unit.fraction.

    ⎛ Assume otherwise.
    ⎜ Assume
    ⎜ δ>0 is not undercut by
    ⎜ some finite.unit.fraction.
    ⎜ 0 < δ ∧ ¬(⅟ℕᵈᵉᶠ ₑₓᵢₛₜₛ< δ)

    ⎜ β = greatest.lower.bound ⅟ℕᵈᵉᶠ
    ⎜ α < β < γ ⇒
    ⎜ ¬(⅟ℕᵈᵉᶠ ₑₓᵢₛₜₛ< α) ∧ ⅟ℕᵈᵉᶠ ₑₓᵢₛₜₛ< γ

    ⎜ ¬(⅟ℕᵈᵉᶠ ₑₓᵢₛₜₛ< δ)
    ⎜ 0 < δ ≤ β

    ⎜ 0 < β < 2⋅β
    ⎜ ⅟ℕᵈᵉᶠ ₑₓᵢₛₜₛ< 2⋅β
    ⎜ 0 < β ≤ ⅟k < 2⋅β
    ⎜ 0 < ¼⋅⅟k < ½⋅β < β ≤ ⅟k < 2⋅β
    ⎜ ⅟ℕᵈᵉᶠ ₑₓᵢₛₜₛ< ½⋅β

    ⎜ However,
    ⎜ 0 < ½⋅β < β
    ⎜ ¬(⅟ℕᵈᵉᶠ ₑₓᵢₛₜₛ< ½⋅β)
    ⎝ Contradiction.

    Therefore,
    0 is not.undercut by
    some finite.unit.fraction.

    Prove that
    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0
    is wrong or agree.

    Prove that
    ∀n ∈ ℕ: 1/n > 1/(n+1) > 0
    is wrong or agree that
    all unit.fractions are not.first.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Mon Sep 30 01:09:26 2024
    Am 28.09.2024 um 22:28 schrieb Moebius:

    @Mückenheim: Ax > 0: NUF(x) = aleph_0 besagt GENAU, dass für jedes x e
    IR mit x > 0 _abzählbar unendlich_ viele Stammbrüche in (0, x) enthalten sind. Und das ist auch richtig (denn es ist so).

    Der Umstand, dass trivialerweise An e IN: 1/n - 1/(n + 1) > 0 gilt, tut
    dem keinen Abbruch; auch wenn Du zu doof und zu blöde bist, um das zu verstehen.

    Hinweis: Die Distanz 1/n - 1/(n + 1) nimmt mit wachsendem n "monoton"
    ab. Tatsächlich ist (1/n - 1/(n + 1))_(n e IN) eine Nullfolge. Es gilt
    sogar:

    SUM_(n=1..oo) 1/n - 1/(n + 1) = 1 .

    D. h. (abzählbar) unendlich viele Stammbrüche haben in [0, 1] Platz.
    (Was ja eigentlich _schon von vorneherein_ klar ist, da trivialerweise
    für alle n e IN: 0 < 1/n <= 1 sowie An e IN: 1/(n + 1) < 1/n gilt.)

    Hinweis: SUM_(n=1..k) 1/n - 1/(n + 1) < 1 für k = 1, 2, 3, ...

    --- SoupGate-Win32 v1.05
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  • From Moebius@21:1/5 to All on Mon Sep 30 01:10:30 2024
    Am 28.09.2024 um 22:28 schrieb Moebius:

    @Mückenheim: Ax > 0: NUF(x) = aleph_0 besagt GENAU, dass für jedes x e
    IR mit x > 0 _abzählbar unendlich_ viele Stammbrüche in (0, x) enthalten sind. Und das ist auch richtig (denn es ist so).

    Der Umstand, dass trivialerweise An e IN: 1/n - 1/(n + 1) > 0 gilt, tut
    dem keinen Abbruch; auch wenn Du zu doof und zu blöde bist, um das zu verstehen.

    Hinweis: Die Distanz 1/n - 1/(n + 1) nimmt mit wachsendem n "monoton"
    ab. Tatsächlich ist (1/n - 1/(n + 1))_(n e IN) eine Nullfolge. Es gilt
    sogar:

    SUM_(n=1..oo) 1/n - 1/(n + 1) = 1 .

    D. h. (abzählbar) unendlich viele Stammbrüche haben in [0, 1] Platz.
    (Was ja eigentlich _schon von vorneherein_ klar ist, da trivialerweise
    für alle n e IN: 0 < 1/n <= 1 sowie 1/(n + 1) < 1/n gilt.)

    Hinweis: SUM_(n=1..k) 1/n - 1/(n + 1) < 1 für k = 1, 2, 3, ...

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Mon Sep 30 10:51:03 2024
    Am 30.09.2024 um 02:19 schrieb Chris M. Thomasson:
    On 9/29/2024 12:30 PM, WM wrote:
    On 29.09.2024 21:21, FromTheRafters wrote:
    After serious thinking WM wrote :
    On 28.09.2024 12:10, FromTheRafters wrote:

    Actual completed infinity, to him, means both a first element and a
    last element must be present in the set.

    There must be all elements. In a linear order this implies a first
    and a last one. [WM]

    No, it doesn't.

    Hint: No natural number is missing in /IN/ BY DEFINITION, Du hirnloser Affe.

    Without knowing that there is a last element, you cannot reasonable claim that all are there.

    Yes we can.

    Like Obama, the war president, making a laughing stock of the Nobel
    prize?

    Huh? What does one of our former presidents have to do with any of this
    shit?

    It's called "brain fart".

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Mon Sep 30 07:04:09 2024
    On 9/29/24 3:49 PM, WM wrote:
    On 28.09.2024 00:08, FromTheRafters wrote:
    WM presented the following explanation :

    Between two unit fractions there is always a finite gap.

    How big?

    In terms of set theory: uncountably many points.

    Regards, WM

    As there are between any unit faction and zero.

    And, a countable infinity of those are unit frzctions, so no unit
    fraction is the smallest.

    Hoisted on your own petard.

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Mon Sep 30 07:08:31 2024
    On 9/29/24 2:56 PM, WM wrote:
    On 27.09.2024 22:12, joes wrote:
    Am Fri, 27 Sep 2024 20:42:06 +0200 schrieb WM:
    On 25.09.2024 18:39, joes wrote:
    Am Wed, 25 Sep 2024 17:51:56 +0200 schrieb WM:

    NUF(x) distinguishes all points.
    How does it distinguish dark points?
    By our mathematical knowledge about ∀n ∈ ℕ: 1/n - 1/(n+1) > 0
    How can you talk about a dark n and it’s (maybe) n+1?

    I assume that dark n exist and follow the rules of visible n, with one exception.

    So, you admit that your "proof" about dark numbers is based on the
    assumption that they exist.

    In other words, you admit your logic is flawed and based on fallacies.



    NUF increases. At no point it can increase by more than 1.
    Right, and there is no point "next to" 0
    There is a unit fraction next to 0.
    Is it closer to zero or to the next UF?

    That is unknown.

    Because you don't actually know anything because you have lied to
    yourself so much.


    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Mon Sep 30 07:10:41 2024
    On 9/29/24 3:08 PM, WM wrote:
    On 28.09.2024 13:24, Richard Damon wrote:

    And for a countably INFINITE set, like the Natural Numbers, there is
    only one end you can count from.

    There is no reason to believe so if all elements are there.

    Of courxe there is, as has been proven. You are just to stupid to
    understand.

    How can there be a "last" number, (the high end) if part of the
    definition is that every number has a number after it?

    Sorry, you are just proving your stupidity.


    Regards, WM


    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Mon Sep 30 07:12:22 2024
    On 9/29/24 3:17 PM, WM wrote:
    On 28.09.2024 13:30, Richard Damon wrote:


    They all have different values, so why can't you distinguish them.

    THey are all based on different Natural Numbers, so why can't you
    distinguish them?

    Because always infinitely many remain undistinguished. They are dark.

    But all your "undistinguished" numbers are fully defined and thus
    distinguised.

    You are just proving your mind has been exploded by the contradictions
    of your "logic" that is broken.


    Regards, WM


    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Mon Sep 30 07:13:25 2024
    On 9/29/24 3:16 PM, WM wrote:
    On 28.09.2024 14:58, Richard Damon wrote:
    On 9/27/24 3:06 PM, WM wrote:
    On 25.09.2024 19:12, Richard Damon wrote:

    The problem is that it turns out the NUF(x) NEVER actually
    "increments" by 0ne at any finite point, it jumps from 0 to infinity
    (Aleph_0) in the unboundedly small gap between 0 and all x > 0,

    How do you distinguish them?

    They have different values, so why can't you?

    Then distinguish the first one.

    Regards, WM

    There isn't a first one.

    Show me a circle with 4 sides.

    You are just proving your logic is non-sense.

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Mon Sep 30 07:14:17 2024
    On 9/29/24 3:06 PM, WM wrote:
    On 28.09.2024 12:10, FromTheRafters wrote:

    Actual completed infinity, to him, means both a first element and a
    last element must be present in the set.

    There must be all elements. In a linear order this implies a first and a
    last one. Without knowing that there is a last element, you cannot
    reasonable claim that all are there.

    Regards, WM


    Which means your "actual infinity" isn't actually infinity, but a lie
    you tell yourself because you can't understand the truth.

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Jim Burns on Mon Sep 30 17:12:35 2024
    On 29.09.2024 21:56, Jim Burns wrote:
    On 9/27/2024 2:54 PM, WM wrote:

    What you want is
    to tell us we've been wrong about sets.

    You have been wrong about sets. You assume that sets are invariable but
    you don't assume that all elements, here unit fractions, can be detected.
    For each positive point x
    for each number (cardinality) k which can increase by 1
    there are more.than.k unit.fractions between 0 and x

    That is a misinterpretation of
    the law valid for small numbers.

    | "If the law supposes that," said Mr. Bumble,
    | squeezing his hat emphatically in both hands,
    | "the law is a ass — a idiot."
    |
    -- Charles Dickens, "Oliver Twist"

    Not yet an ass, an idiot? Shakespeare English?
    For every x NUF increases by not more than 1.

    For every x>0 and x′>0
    NUF increases by not more and not less than 0.

    Wrong.

    🎜 Aleph.naught bottles of beer on the wall,

    ℵo unit fractions cannot come into being without a first one.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to FromTheRafters on Mon Sep 30 17:15:39 2024
    On 30.09.2024 00:29, FromTheRafters wrote:
    WM explained on 9/29/2024 :
    On 28.09.2024 00:08, FromTheRafters wrote:
    WM presented the following explanation :

    Between two unit fractions there is always a finite gap.
    ;
    How big?

    In terms of set theory: uncountably many points.

    How wide are these points?

    More than nothing.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Moebius on Mon Sep 30 20:13:07 2024
    On 30.09.2024 01:10, Moebius wrote:

    D. h. (abzählbar) unendlich viele Stammbrüche haben in [0, 1] Platz.

    Even the last one? If all are there, then we can count them in arbitrary
    order, even by NUF(x).

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Richard Damon on Mon Sep 30 20:48:39 2024
    On 30.09.2024 13:13, Richard Damon wrote:
    On 9/29/24 3:16 PM, WM wrote:
    On 28.09.2024 14:58, Richard Damon wrote:
    On 9/27/24 3:06 PM, WM wrote:
    On 25.09.2024 19:12, Richard Damon wrote:

    The problem is that it turns out the NUF(x) NEVER actually
    "increments" by 0ne at any finite point, it jumps from 0 to
    infinity (Aleph_0) in the unboundedly small gap between 0 and all x
    0,

    How do you distinguish them?

    They have different values, so why can't you?

    Then distinguish the first one.

    There isn't a first one.

    NUF(0) = 0 and NUF(1) = ℵo. ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 shows that at no point x NUF can increase by more than one step 1. It is fact. I am not responsible. I only made the discovery.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Mon Sep 30 14:33:12 2024
    On 9/30/2024 11:12 AM, WM wrote:
    On 29.09.2024 21:56, Jim Burns wrote:
    On 9/27/2024 2:54 PM, WM wrote:
    On 25.09.2024 20:40, Jim Burns wrote:

    There are numbers (cardinalities) which increase by 1
    and other numbers (cardinalities), which
    don't increase by 1.

    No.

    You invoke _axiom.1_
    Every countable set is countable,
    i.e., it increases one by one.

    Axiom.1 _describes_
    what you are currently discussing.

    Axiom.1 means
    ⎛ If
    ⎜ the set of unit fraction can't increase by 1
    ⎜ then
    ⎝ we aren't discussing that set.

    Axiom.1 does not mean
    ⎛ If
    ⎜ we are discussing the set of unit fractions
    ⎜ then
    ⎝ that set can increase by 1

    What you want is
    to tell us we've been wrong about sets.

    You have been wrong about sets.

    What you are talking about aren't _our_ sets.

    Compare to:
    You (hypothetically) decide that
    triangles should have _four_ corners.
    And we carry on discussing three.cornered triangles.
    Therefore,
    we (hypothetically) would be wrong about
    _your_ four.cornered triangles.

    Which we would be.
    I freely admit it.
    But we wouldn't have any reason to _care_
    about _your_ "triangles".

    We have no more reason to care about _your_ "sets".

    You assume that sets are invariable

    ...for the best of reasons:
    _what we mean by set_ is invariable.

    In other news,
    we assume that triangles have three corners.
    Which is what we mean.

    but you don't assume that all elements,
    here unit fractions, can be detected.

    We typically assume nothing about detectability
    and non.detectability.

    Also,
    we typically _make no claims_ about detectability
    and non.detectability, so
    that non.assumption isn't a problem _of ours_.

    For every x NUF increases by not more than 1.

    For every x>0 and x′>0
    NUF increases by not more and not less than 0.

    ⅟⌈1+⅟x⌉ → ⅟⌈1+⅟x′⌉
    ⅟⌈2+⅟x⌉ → ⅟⌈2+⅟x′⌉
    ⅟⌈3+⅟x⌉ → ⅟⌈3+⅟x′⌉
    ⅟⌈4+⅟x⌉ → ⅟⌈4+⅟x′⌉
    ...

    Wrong.

    ⅟⌈1+⅟x⌉ → ⅟⌈1+⅟x′⌉
    ⅟⌈2+⅟x⌉ → ⅟⌈2+⅟x′⌉
    ⅟⌈3+⅟x⌉ → ⅟⌈3+⅟x′⌉
    ⅟⌈4+⅟x⌉ → ⅟⌈4+⅟x′⌉
    ...

    🎜 Aleph.naught bottles of beer on the wall,

    ℵo unit fractions cannot come into being
    without a first one.

    Unit fractions do not come into being.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Mon Sep 30 20:54:02 2024
    On 30.09.2024 20:33, Jim Burns wrote:
    On 9/30/2024 11:12 AM, WM wrote:

    What you are talking about aren't _our_ sets.

    NUF(0) = 0 and NUF(1) = ℵo. ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 shows that at no point x NUF can increase by more than one step 1. It is fact with your
    set too. I am not responsible. I only made the discovery.

    We have no more reason to care about _your_ "sets".

    No reason even to care about mathematical basic truths like
    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 ?
    Unit fractions do not come into being.

    But they come into sight.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Mon Sep 30 15:51:54 2024
    On 9/30/2024 2:54 PM, WM wrote:
    On 30.09.2024 20:33, Jim Burns wrote:
    On 9/30/2024 11:12 AM, WM wrote:
    On 29.09.2024 21:56, Jim Burns wrote:
    On 9/27/2024 2:54 PM, WM wrote:
    On 25.09.2024 20:40, Jim Burns wrote:

    There are
    numbers (cardinalities) which increase by 1
    and other numbers (cardinalities),
    which don't increase by 1.

    No.

    You invoke _axiom.1_
    Every countable set is countable,
    i.e., it increases one by one.

    What you are talking about aren't _our_ sets.

    NUF(0) = 0 and NUF(1) = ℵo.

    ℵ₀ is the cardinality of
    cardinalities which increase by 1

    If ℵ₀ is any
    cardinality which increases by 1
    then ℵ₀+1 is also a
    cardinality which increases by 1
    and
    there are more.than.ℵ₀.many
    cardinalities which increase by 1
    Contradiction.

    Therefore,
    ℵ₀ does not increase by 1.

    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0
    shows that at

    ...no unit.fraction...

    no point x NUF can increase by
    more than one step 1.

    0 is not a unit.fraction.

    It is fact with your set too.
    I am not responsible.

    Also,
    you are not correct.

    I only made the discovery.

    We have no more reason to care about _your_ "sets".

    No reason even to care about
    mathematical basic truths like
    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 ?

    ∀n ∈ ℕ: 1/n > 1/(n+1) > 0

    ∀n ∈ ℕ: 1/n isn't first unit.fraction.

    Unit fractions do not come into being.

    But they come into sight.

    We reason about existing unit.fractions,
    starting with
    a description of an existing unit fraction.

    Visibility, detectability, etc
    are irrelevant to an argument about
    _existing_ unit.fractions.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Mon Sep 30 19:11:36 2024
    On 9/30/24 2:48 PM, WM wrote:
    On 30.09.2024 13:13, Richard Damon wrote:
    On 9/29/24 3:16 PM, WM wrote:
    On 28.09.2024 14:58, Richard Damon wrote:
    On 9/27/24 3:06 PM, WM wrote:
    On 25.09.2024 19:12, Richard Damon wrote:

    The problem is that it turns out the NUF(x) NEVER actually
    "increments" by 0ne at any finite point, it jumps from 0 to
    infinity (Aleph_0) in the unboundedly small gap between 0 and all
    x > 0,

    How do you distinguish them?

    They have different values, so why can't you?

    Then distinguish the first one.

    There isn't a first one.

    NUF(0) = 0 and NUF(1) = ℵo. ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 shows that at no
    point x NUF can increase by more than one step 1. It is fact. I am not responsible. I only made the discovery.

    Regards, WM


    No, is shows that at no finite point does NUF(x) increase by just 1 (or
    any finite value).

    For ANY finite x, NUF(x) will be Aleph_0, since there is an infinite
    number of unit fractions smaller than it.

    When you "increment" Aleph_0, it doesn't change, so your NUF(x) doesn't increment at any finite value x.

    Since there is not finite value x for NUF(x) to increment from 0 to 1,
    (or 1 to 2, or any finite value to another) in NEVER increments by just 1.

    Your NUF(x) is just a mis-defined "function" that doesn't behave the way
    your want because it is based on assumptions as valid as 5 sided triangle.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Mon Sep 30 19:07:39 2024
    On 9/30/24 2:54 PM, WM wrote:
    On 30.09.2024 20:33, Jim Burns wrote:
    On 9/30/2024 11:12 AM, WM wrote:

    What you are talking about aren't _our_ sets.

    NUF(0) = 0 and NUF(1) = ℵo. ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 shows that at no
    point x NUF can increase by more than one step 1. It is fact with your
    set too. I am not responsible. I only made the discovery.

    Actually, it shows that at no point CAN it increase by 1.

    For any finite number x, NUF(x) will be Aleph_0, and Aleph_0 when you
    attempt to "increment" it, doesn't change.

    Since there is no finite value of x where NUF(x) can be 1, there is no
    point were in increments from 0 to 1, or 1 to 2, or and finite increment.

    Thus, your "claim" is just another delusional lie that come out of your exploded to smithereen logic system.


    We have no more reason to care about _your_ "sets".

    No reason even to care about mathematical basic truths like
    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 ?

    Which means there is no value of 1/n where NUF(x) CAN be 1, since there
    will ALWAYS be a 1/(n+1) smaller than it

    Unit fractions do not come into being.

    But they come into sight.

    And they are all there.

    "Sight" isn't a property of numbers, not in the normal discussion of them.

    Since you have been unable to actually DEFINE what you mean by those
    terms, they are just figments of your blown to smithereen mind,


    Regards, WM



    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Mon Sep 30 19:14:35 2024
    On 9/30/24 11:15 AM, WM wrote:
    On 30.09.2024 00:29, FromTheRafters wrote:
    WM explained on 9/29/2024 :
    On 28.09.2024 00:08, FromTheRafters wrote:
    WM presented the following explanation :

    Between two unit fractions there is always a finite gap.
    ;
    How big?

    In terms of set theory: uncountably many points.

    How wide are these points?

    More than nothing.

    Regards, WM


    But it must be next to nothing, which becomes nothing when we get to the
    actual infinite set.

    Sorry, your logi is just broken.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to Chris M. Thomasson on Tue Oct 1 07:08:58 2024
    On 9/30/24 7:56 PM, Chris M. Thomasson wrote:
    On 9/30/2024 4:13 AM, Richard Damon wrote:
    On 9/29/24 3:16 PM, WM wrote:
    On 28.09.2024 14:58, Richard Damon wrote:
    On 9/27/24 3:06 PM, WM wrote:
    On 25.09.2024 19:12, Richard Damon wrote:

    The problem is that it turns out the NUF(x) NEVER actually
    "increments" by 0ne at any finite point, it jumps from 0 to
    infinity (Aleph_0) in the unboundedly small gap between 0 and all
    x > 0,

    How do you distinguish them?

    They have different values, so why can't you?

    Then distinguish the first one.

    Regards, WM

    There isn't a first one.

    Show me a circle with 4 sides.

    ;^) Humm, an n-gon where n is taken to infinity is a circle?


    But 4 is not infinity.

    You example is just an illustration that WM's logic might be just a
    crude approximation for correctness, but then he relies on the parts
    that are only an approximation.

    Like asserting from the measurements of the square that pi is 4


    You are just proving your logic is non-sense.



    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to Ross Finlayson on Tue Oct 1 13:00:27 2024
    On 9/29/2024 5:04 PM, Ross Finlayson wrote:
    On 09/29/2024 12:02 PM, Jim Burns wrote:
    On 9/26/2024 4:50 PM, Ross Finlayson wrote:
    On 09/26/2024 06:48 AM, Jim Burns wrote:
    On 9/25/2024 9:50 PM, Ross Finlayson wrote:
    On 09/25/2024 02:00 PM, Jim Burns wrote:
    On 9/25/2024 2:44 PM, Ross Finlayson wrote:

    How would you define "atom"
    the otherwise "infinitely-divisible"?

    It's seems quite Aristotlean to be against atomism,

    I am anti.atomized.ℝ (complete ordered field)
    You seem to read that as anti.atomized.anything.

    How do I make claims to you (RF) which
    are only about the things I intend?

    For example, how do I claim to you (RF),
    for a right triangles but not for any triangle, that
    ⎛ the square of its longest side equals
    ⎝ the sum of the squares of its two other sides
    ?

    I enjoy reading that, Jim, if I may be so familiar,
    I enjoy reading that because it sounds _sincere_,
    and, it reflects a "conscientiousness", given what
    there is, given the milieu, then, for given the surrounds.

    Thank you.

    A right triangle: either has one right angle,
    or two angles that sum to a right angle.

    The sum of the angles is the angle of the sum.

    Then, as with regards to atoms,

    Perhaps I am taking more out of your posts
    than you are putting in.
    I say:
    the complete ordered field doesn't have
    infinitesimals.
    You say:
    There are these other systems, they have
    infinitesimals.
    It is very unclear to me what you intend for me
    to take from that information.

    I hope this will help me understand you better.
    Please accept or reject each claim and
    -- this is important --
    replace rejected claims with
    what you _would_ accept.

    ⎛ ℝ, the complete ordered field, is
    ⎝ the consensus theory in 2024 of the continuum.

    ⎛ ℝ contains ℚ the rationals and
    ⎜ the least upper bound of
    ⎝ each bounded nonempty subset of ℚ and of ℝ

    ( The greatest lower bound of ⅟ℕ unit fractions is 0

    ⎛ A unit fraction is reciprocal to a natural>0

    ⎜ A set≠{} ⊆ ℕ naturals holds a minimum
    ⎜ A natural≠0 has a predecessor.natural.
    ⎜ A natural has a successor.natural.

    ⎜ The sum of two naturals is a natural
    ⎝ the product of two naturals is a natural.

    ⎛ There are no points in ℝ
    ⎜ between 0 and all the unit fractions
    ⎝ (which is what I mean here by 'infinitesimal').

    Thank you in advance.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Tue Oct 1 19:33:09 2024
    On 01.10.2024 01:07, Richard Damon wrote:
    On 9/30/24 2:54 PM, WM wrote:

    NUF(0) = 0 and NUF(1) = ℵo. ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 shows that at no
    point x NUF can increase by more than one step 1. It is fact with your
    set too. I am not responsible. I only made the discovery.

    Actually, it shows that at no point CAN it increase by 1.

    Wrong because it cannot start with ℵo.

    For any finite number x, NUF(x) will be Aleph_0, and Aleph_0 when you
    attempt to "increment" it, doesn't change.

    If NUF is ℵo at all x > 0 then it must count ℵo unit fractions at 0. Wrong.

    Since there is no finite value of x where NUF(x) can be 1

    Wrong presupposition.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Tue Oct 1 19:37:05 2024
    On 01.10.2024 01:11, Richard Damon wrote:

    For ANY finite x, NUF(x) will be Aleph_0, since there is an infinite
    number of unit fractions smaller than it.

    You claim that ℵo unit fractions are already there, whatever x > 0 you choose. That means they cannot be chosen. They are dark.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Tue Oct 1 19:39:20 2024
    On 01.10.2024 01:14, Richard Damon wrote:
    On 9/30/24 11:15 AM, WM wrote:
    On 30.09.2024 00:29, FromTheRafters wrote:
    WM explained on 9/29/2024 :
    On 28.09.2024 00:08, FromTheRafters wrote:
    WM presented the following explanation :

    Between two unit fractions there is always a finite gap.
    ;
    How big?

    In terms of set theory: uncountably many points.

    How wide are these points?

    More than nothing.

    But it must be next to nothing,

    No, between them and nothing there are infinitely many countable sets
    and then finite sets of points.

    which becomes nothing when we get to the
    actual infinite set.

    Not in mathematics.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Tue Oct 1 19:29:21 2024
    On 30.09.2024 21:51, Jim Burns wrote:
    On 9/30/2024 2:54 PM, WM wrote:

    NUF(0) = 0 and NUF(1) = ℵo.

    ℵ₀ is the cardinality of
    cardinalities which increase by 1

    Yes.

    If ℵ₀ is any
    cardinality which increases by 1

    No.
    Therefore,
    ℵ₀ does not increase by 1.

    Yes.

    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0
    shows that at

    ...no unit.fraction...

    no point x NUF can increase by
    more than one step 1.

    0 is not a unit.fraction.

    That proves NUF(0) = 0.

    It is fact with your set too.
    I am not responsible.

    Also,
    you are not correct.

    What is incorrect?
    No reason even to care about
    mathematical basic truths like
    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 ?

    ∀n ∈ ℕ: 1/n  >  1/(n+1) > 0

    ∀n ∈ ℕ: 1/n isn't first unit.fraction.

    You should understand that NUF cannot increase by more than 1 and cannot
    start with more than 0 at 0. Do you understand that?

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to Ross Finlayson on Tue Oct 1 16:13:48 2024
    On 10/1/2024 2:02 PM, Ross Finlayson wrote:
    On 10/01/2024 10:00 AM, Jim Burns wrote:

    I hope this will help me understand you better.
    Please accept or reject each claim and
    -- this is important --
    replace rejected claims with
    what you _would_ accept.

    ⎛ ℝ, the complete ordered field, is
    ⎝ the consensus theory in 2024 of the continuum.

    ⎛ ℝ contains ℚ the rationals and
    ⎜ the least upper bound of
    ⎝ each bounded nonempty subset of ℚ and of ℝ

    ( The greatest lower bound of ⅟ℕ unit fractions is 0

    ⎛ A unit fraction is reciprocal to a natural>0

    ⎜ A set≠{} ⊆ ℕ naturals holds a minimum
    ⎜ A natural≠0 has a predecessor.natural.
    ⎜ A natural has a successor.natural.

    ⎜ The sum of two naturals is a natural
    ⎝ the product of two naturals is a natural.

    ⎛ There are no points in ℝ
    ⎜ between 0 and all the unit fractions
    ⎝ (which is what I mean here by 'infinitesimal').

    Thank you in advance.

    Here it's that "Eudoxus/Dedekind/Cauchy is
    _insufficient_ to represent the character
    of the real numbers".

    Then, that there are line-reals and signal-reals
    besides field-reals, has that of course there are
    also models of line-reals and signal-reals in the
    mathematics today, like Jordan measure and the ultrafilter,
    and many extant examples where a simple deliberation
    of continuity according to the definitions of
    line-reals or signal-reals, results any contradictions
    you might otherwise see as arriving their existence.

    Then, besides noting how it's broken, then also
    there's given a reasoning how it's repaired,
    resulting "less insufficient", or at least making
    it so that often found approaches in the applied,
    and their success, make the standard linear curriculum,
    unsuited.

    Then, I think it's quite standard how I put it,
    really very quite standard.

    I hope this will help me understand you better.
    Please accept or reject each claim and
    -- this is important --
    replace rejected claims with
    what you _would_ accept.

    ⎛ ℝ, the complete ordered field, is
    ⎝ the consensus theory in 2024 of the continuum.

    ⎛ ℝ contains ℚ the rationals and
    ⎜ the least upper bound of
    ⎝ each bounded nonempty subset of ℚ and of ℝ

    ( The greatest lower bound of ⅟ℕ unit fractions is 0

    ⎛ A unit fraction is reciprocal to a natural>0

    ⎜ A set≠{} ⊆ ℕ naturals holds a minimum
    ⎜ A natural≠0 has a predecessor.natural.
    ⎜ A natural has a successor.natural.

    ⎜ The sum of two naturals is a natural
    ⎝ the product of two naturals is a natural.

    ⎛ There are no points in ℝ
    ⎜ between 0 and all the unit fractions
    ⎝ (which is what I mean here by 'infinitesimal').

    Thank you in advance.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Tue Oct 1 16:05:13 2024
    On 10/1/2024 1:29 PM, WM wrote:
    On 30.09.2024 21:51, Jim Burns wrote:
    On 9/30/2024 2:54 PM, WM wrote:

    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0
    shows that at

    ...no unit.fraction...

    no point x NUF can increase by
    more than one step 1.

    0 is not a unit.fraction.

    That proves NUF(0) = 0.

    It is fact with your set too.
    I am not responsible.

    Also,
    you are not correct.

    What is incorrect?

    This is incorrect:
    🛇⎛ ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 shows that
    🛇⎜ at no point x
    🛇⎝ NUF can increase by more than one step 1.

    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 doesn't show that.

    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 shows
    ∀n ∈ ℕ: 1/n > 1/(n+1) > 0
    which shows
    each unit fraction 1/n is not first.

    No reason even to care about
    mathematical basic truths like
    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 ?

    ∀n ∈ ℕ: 1/n  >  1/(n+1) > 0

    ∀n ∈ ℕ: 1/n isn't first unit.fraction.

    NUF cannot increase by more than 1 and
    cannot start with more than 0 at 0.

    NUF(0) = 0
    The rest of it, no.

    There are
    points which are unit fractions
    points between unit fractions
    points at least some nonzero distance
    from each unit fraction and
    the point 0

    You (WM) are mostly considering the first two,
    unit fractions and their points.between.

    At a point.between unit.fractions,
    the set of smaller.unit.fractions doesn't change.

    At a unit.fraction,
    the set of smaller.unit.fractions changes by 1

    ⎛ Those sets have a cardinality beyond all
    ⎜ cardinalities which can change by 1.
    ⎜ The _set_ changes by 1 element.
    ⎜ The set's _cardinality_ doesn't change by 1.
    ⎝ It isn't a finite set, it can't change by 1.

    For the third class of points,
    before all or after all unit fractions,
    plus clearly away from the unit fractions,
    NUF = 0 or NUF = ℵ₀ and doesn't change.

    Then there's 0.

    For every nonzero distance d from 0
    there are ℵ₀.many unit.fractions closer than d
    ∀ᴿd>0:
    ⎛ u(k) = ⅟⌈k+⅟d⌉
    ⎜ u: ℕ → (0,d]: one.to.one
    ⎝ NUF(d) = |u(ℕ)| = |ℕ| = ℵ₀

    You should understand that

    Do you understand that?

    Is that
    your concept of
    a plan of
    a mathematical argument?

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Wed Oct 2 04:13:41 2024
    Am 02.10.2024 um 03:37 schrieb Chris M. Thomasson:

    an n-gon as n goes to infinity approaches a circle? Fair enough?

    Yes.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Wed Oct 2 13:12:56 2024
    On 01.10.2024 22:05, Jim Burns wrote:

    For every nonzero distance d from 0
    there are ℵ₀.many unit.fractions closer than d

    That means there is no d by what you can distinguish ℵ₀ unit fractions?

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Wed Oct 2 13:10:09 2024
    On 01.10.2024 22:05, Jim Burns wrote:
    On 10/1/2024 1:29 PM, WM wrote:


    What is incorrect?

    This is incorrect:
    🛇⎛ ∀n ∈ ℕ: 1/n - 1/(n+1) > 0  shows that
    🛇⎜ at no point x
    🛇⎝ NUF can increase by more than one step 1.

    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0  doesn't show that.

    You believe that more than one unit fractions can occupy one and the
    same point nevertheless? That would make the distance 0, but it is > 0. Therefore you are wrong.

    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0  shows
    ∀n ∈ ℕ: 1/n  >  1/(n+1) > 0
    which shows
    each unit fraction 1/n is not first.

    No. ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 does not prove that n+1 is a natural number. Note the infinite sequence
    1, 2, 3, ..., ω-2, ω-1, ω.
    It consists of infinitely many finite numbers.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Wed Oct 2 07:19:57 2024
    On 10/1/24 1:33 PM, WM wrote:
    On 01.10.2024 01:07, Richard Damon wrote:
    On 9/30/24 2:54 PM, WM wrote:

    NUF(0) = 0 and NUF(1) = ℵo. ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 shows that at >>> no point x NUF can increase by more than one step 1. It is fact with
    your set too. I am not responsible. I only made the discovery.

    Actually, it shows that at no point CAN it increase by 1.

    Wrong because it cannot start with ℵo.

    Then it can't be.


    For any finite number x, NUF(x) will be Aleph_0, and Aleph_0 when you
    attempt to "increment" it, doesn't change.

    If NUF is ℵo at all x > 0 then it must count ℵo unit fractions at 0. Wrong.

    No, just that there isn't a point for it to start counting at


    Since there is no finite value of x where NUF(x) can be 1

    Wrong presupposition.

    No presumption was made. Just proof.

    IT shows that YOUR PRESOPPOSITION, that a finite funciton NUF(x) can
    exist is what is wrong.

    Just proves your brain has been blown to smithereens by your
    contradictory logic based on incorrect assumptions.


    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Wed Oct 2 07:17:58 2024
    On 10/1/24 1:39 PM, WM wrote:
    On 01.10.2024 01:14, Richard Damon wrote:
    On 9/30/24 11:15 AM, WM wrote:
    On 30.09.2024 00:29, FromTheRafters wrote:
    WM explained on 9/29/2024 :
    On 28.09.2024 00:08, FromTheRafters wrote:
    WM presented the following explanation :

    Between two unit fractions there is always a finite gap.
    ;
    How big?

    In terms of set theory: uncountably many points.

    How wide are these points?

    More than nothing.

    But it must be next to nothing,

    No, between them and nothing there are infinitely many countable sets
    and then finite sets of points.

    So your "smallest" wasn't the smallest, and your set didn't include all
    the points.

    You are just admitting you are a liar and don't know what you are
    talking about.


    which becomes nothing when we get to the actual infinite set.

    Not in mathematics.

    Sure it does. Just not in FINTE mathematics, which can't have the full
    set of the Natural Numbers, which is what breaks yyour logic.


    Regards, WM


    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Wed Oct 2 07:21:41 2024
    On 10/1/24 1:37 PM, WM wrote:
    On 01.10.2024 01:11, Richard Damon wrote:

    For ANY finite x, NUF(x) will be Aleph_0, since there is an infinite
    number of unit fractions smaller than it.

    You claim that ℵo unit fractions are already there, whatever x > 0 you choose. That means they cannot be chosen. They are dark.

    Nope.

    Just shows your stupidity.

    You think something must exist that doesn't and think everyone else is
    wrong because your no one else sees your imaginary friend that even you
    admit you can't see.

    Sorry, it just isn't there, and you are just alone in your ignorance.


    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to FromTheRafters on Wed Oct 2 13:54:42 2024
    On 02.10.2024 13:30, FromTheRafters wrote:
    WM pretended :

    No. ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 does not prove that n+1 is a natural
    number. Note the infinite sequence
    1, 2, 3, ..., ω-2, ω-1, ω.

    Omega minus one or two is undefined

    Yes in so far as these natural numbers are dark and cannot be reached by
    a FISON.

    and n plus one closure is axiomatic.

    But it is in contradiction with NUF(x) passing 1. Do you understand that
    NUF(x) can nowhere increase by more than 1?

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Wed Oct 2 13:57:54 2024
    On 02.10.2024 13:17, Richard Damon wrote:
    On 10/1/24 1:39 PM, WM wrote:
    On 01.10.2024 01:14, Richard Damon wrote:
    On 9/30/24 11:15 AM, WM wrote:
    On 30.09.2024 00:29, FromTheRafters wrote:
    WM explained on 9/29/2024 :
    On 28.09.2024 00:08, FromTheRafters wrote:
    WM presented the following explanation :

    Between two unit fractions there is always a finite gap.
    ;
    How big?

    In terms of set theory: uncountably many points.

    How wide are these points?

    More than nothing.

    But it must be next to nothing,

    No, between them and nothing there are infinitely many countable sets
    and then finite sets of points.

    So your "smallest" wasn't the smallest,

    Of course all gaps between unit fractions are made of more than finitely
    many points. I never denied that.

    which becomes nothing when we get to the actual infinite set.

    Not in mathematics.

    Sure it does.

    Try to learn the basics and to understand ∀n ∈ ℕ: 1/n - 1/(n+1) > 0.

    Regards, WMK

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  • From WM@21:1/5 to Richard Damon on Wed Oct 2 14:00:36 2024
    On 02.10.2024 13:21, Richard Damon wrote:
    On 10/1/24 1:37 PM, WM wrote:
    On 01.10.2024 01:11, Richard Damon wrote:

    For ANY finite x, NUF(x) will be Aleph_0, since there is an infinite
    number of unit fractions smaller than it.

    You claim that ℵo unit fractions are already there, whatever x > 0 you
    choose. That means they cannot be chosen. They are dark.

    Nope.

    Show a counter example leaving less than ℵo smaller unit fractions
    undefined. Fail.

    Regards, WM

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  • From joes@21:1/5 to All on Wed Oct 2 12:56:32 2024
    Am Wed, 02 Oct 2024 13:10:09 +0200 schrieb WM:
    On 01.10.2024 22:05, Jim Burns wrote:
    On 10/1/2024 1:29 PM, WM wrote:

    This is incorrect:
    🛇⎛ ∀n ∈ ℕ: 1/n - 1/(n+1) > 0  shows that 🛇⎜ at no point x 🛇⎝ NUF can
    increase by more than one step 1.
    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0  doesn't show that.
    You believe that more than one unit fractions can occupy one and the
    same point nevertheless? That would make the distance 0, but it is > 0. Therefore you are wrong.
    Nobody believes that. It just doesn’t follow.

    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0  shows ∀n ∈ ℕ: 1/n  >  1/(n+1) > 0 which
    shows each unit fraction 1/n is not first.
    No. ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 does not prove that n+1 is a natural number. Note the infinite sequence 1, 2, 3, ..., ω-2, ω-1, ω.
    It consists of infinitely many finite numbers.
    Those last numbers are not finite, and this is not a sequence (it is
    not connected). Your favorite triviality presupposes a natural n+1.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From WM@21:1/5 to joes on Wed Oct 2 15:49:25 2024
    On 02.10.2024 14:56, joes wrote:
    Am Wed, 02 Oct 2024 13:10:09 +0200 schrieb WM:
    On 01.10.2024 22:05, Jim Burns wrote:
    On 10/1/2024 1:29 PM, WM wrote:

    This is incorrect:
    🛇⎛ ∀n ∈ ℕ: 1/n - 1/(n+1) > 0  shows that 🛇⎜ at no point x 🛇⎝ NUF can
    increase by more than one step 1.
    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0  doesn't show that.
    You believe that more than one unit fractions can occupy one and the
    same point nevertheless? That would make the distance 0, but it is > 0.
    Therefore you are wrong.
    Nobody believes that. It just doesn’t follow.

    It follows that either all unit fractions are at different places (then
    NUF grows one by one) or not. Then at least two are at the same place.
    There are no further alternatives.

    Regards, WM

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  • From Moebius@21:1/5 to All on Wed Oct 2 18:02:46 2024
    Am 02.10.2024 um 14:56 schrieb joes:
    Am Wed, 02 Oct 2024 13:10:09 +0200 schrieb WM:
    On 01.10.2024 22:05, Jim Burns wrote:

    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 shows ∀n ∈ ℕ: 1/n > 1/(n+1) [...] >>> which shows each unit fraction 1/n is not first.

    Right.

    No.

    Yes.

    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 does not prove that n+1 is a natural
    number.

    @Mückenheim:

    Right. But the following PEANO-AXIOM

    An e IN: S(n) e IN

    zusammen mit der Definition

    n+1 := s(n)

    beweist es, Du Depp.

    Since from them we get the theorem:

    An e IN: n+1 e IN (*).

    Hint: Jim DIDN'T claim that your trivial statement proves that n+1 is a
    natural number, but that it proves that for each and every unit fraction there's a SMALLER one [which it does together with (*)].

    [Well, actually, for showing this we would also have to refer to a
    definition of "unit fraction": u is a /unit fraction/ iff there's an n e
    IN such that u = 1/n.]

    Note the infinite sequence 1, 2, 3, ..., ω-2, ω-1, ω. It consists of infinitely many finite numbers.

    @Mückenheim:

    Red' doch keine solche Scheiße daher, Mückenheim!

    1. Ist ω GANZ GEWISS keine "finite number", sondern /the smallest
    infinite ordinal number/.

    2. Sind die Ausdrücke "ω-2", "ω-1" nicht definiert. Du redest also
    wieder mal saudummen Scheißdreck daher.

    3. Ist 1, 2, 3, ... ω "technisch gesehen" keine "unendliche Folge"
    (jedenfalls keine mit Indexmenge IN).

    Kurz und gut: Nichts als purer Sachwachsinn, der auch nicht das
    Geringste mit dem in Rede stehenden Sachverhalt zu tun hat.

    --- SoupGate-Win32 v1.05
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  • From Moebius@21:1/5 to All on Wed Oct 2 18:16:26 2024
    Am 02.10.2024 um 18:02 schrieb Moebius:
    Am 02.10.2024 um 14:56 schrieb joes:
    Am Wed, 02 Oct 2024 13:10:09 +0200 schrieb WM:
    On 01.10.2024 22:05, Jim Burns wrote:

    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 shows ∀n ∈ ℕ: 1/n > 1/(n+1) [...] >>>> which shows each unit fraction 1/n is not first.

    Right.

    No.

    Yes.

    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 does not prove that n+1 is a natural
    number.

    @Mückenheim:

    Right. But the following PEANO-AXIOM

          An e IN: S(n) e IN

    zusammen mit der Definition

          n+1 := s(n)

    beweist es, Du Depp.

    Since from them we get the theorem:

          An e IN: n+1 e IN    (*).

    Hinweis@Mückenheim: Anders als Du, bewegt man sich, wenn man Mathematik treibt, nicht in einem luftleeren Raum (oder einem Wahnsystem), sondern
    in einem gewissen (mathematischen) Kontext. Hier sind das die
    verschiedenen Zahlenbereiche (wie sie in der klassischen Mathematik
    definiert sind): IN, die Brüche und/oder Q. (Im Hinblick auf NUF sogar
    noch IR.)

    So kann man im Kontext der sog. KLASSISCHEN MATHEMATIK

    An e IN: n+1 e IN

    als "gegeben" ansehen (also "voraussetzen").

    In Deinem Wahnsystem oder auch im Kontext des sog. Utrafinitismus mag
    das anders sein. Um letzteren geht es hier aber nicht und ersteres ist
    keine Mathematik.

    Hint: Jim DIDN'T claim that your trivial statement proves that n+1 is a natural number, but that it proves that for each and every unit fraction there's a SMALLER one [which it does together with (*)].

    [Well, actually, for showing this we would also have to refer to a
    definition of "unit fraction": u is a /unit fraction/ iff there's an n e
    IN such that u = 1/n.]

    Note the infinite sequence 1, 2, 3, ..., ω-2, ω-1, ω. It consists of
    infinitely many finite numbers.

    @Mückenheim:

    Red' doch keine solche Scheiße daher, Mückenheim!

    1. Ist ω GANZ GEWISS keine "finite number", sondern /the smallest
    infinite ordinal number/.

    2. Sind die Ausdrücke "ω-2", "ω-1" nicht definiert. Du redest also
    wieder mal saudummen Scheißdreck daher.

    3. Ist 1, 2, 3, ... ω "technisch gesehen" keine "unendliche
    Folge" (jedenfalls keine mit Indexmenge IN).

    Kurz und gut: Nichts als purer Sachwachsinn, der auch nicht das
    Geringste mit dem in Rede stehenden Sachverhalt zu tun hat.


    --- SoupGate-Win32 v1.05
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  • From Moebius@21:1/5 to All on Wed Oct 2 19:10:35 2024
    Am 02.10.2024 um 14:56 schrieb joes:
    Am Wed, 02 Oct 2024 13:10:09 +0200 schrieb WM:

    Note the infinite sequence 1, 2, 3, ..., ω-2, ω-1, ω.
    It consists of infinitely many finite numbers.

    Those last numbers are not finite [...]

    Actually, "ω-2" and "ω-1" are not even defined terms.

    In Mückenheim's Wahnwelt "ω-1" denotes the ordinal number x such that x
    + 1 = ω ... (and "ω-2" denotes the ordinal number x such that x + 2 =
    ω). It's just that there are no such ordinal numbers.

    --- SoupGate-Win32 v1.05
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  • From Jim Burns@21:1/5 to Ross Finlayson on Wed Oct 2 14:57:46 2024
    On 10/1/2024 6:13 PM, Ross Finlayson wrote:
    On 10/01/2024 01:13 PM, Jim Burns wrote:
    On 10/1/2024 2:02 PM, Ross Finlayson wrote:

    Here it's that "Eudoxus/Dedekind/Cauchy is
    _insufficient_ to represent the character
    of the real numbers".

    Then, that there are line-reals and signal-reals
    besides field-reals, has that of course there are
    also models of line-reals and signal-reals in the
    mathematics today, like Jordan measure and the ultrafilter,
    and many extant examples where a simple deliberation
    of continuity according to the definitions of
    line-reals or signal-reals, results any contradictions
    you might otherwise see as arriving their existence.

    Then, besides noting how it's broken, then also
    there's given a reasoning how it's repaired,
    resulting "less insufficient", or at least making
    it so that often found approaches in the applied,
    and their success, make the standard linear curriculum,
    unsuited.

    Then, I think it's quite standard how I put it,
    really very quite standard.

    I hope this will help me understand you better.
    Please accept or reject each claim and
    -- this is important --
    replace rejected claims with
    what you _would_ accept.

    ⎛ ℝ, the complete ordered field, is
    ⎝ the consensus theory in 2024 of the continuum.

    ⎛ ℝ contains ℚ the rationals and
    ⎜ the least upper bound of
    ⎝ each bounded nonempty subset of ℚ and of ℝ

    ( The greatest lower bound of ⅟ℕ unit fractions is 0

    ⎛ A unit fraction is reciprocal to a natural>0

    ⎜ A set≠{} ⊆ ℕ naturals holds a minimum
    ⎜ A natural≠0 has a predecessor.natural.
    ⎜ A natural has a successor.natural.

    ⎜ The sum of two naturals is a natural
    ⎝ the product of two naturals is a natural.

    ⎛ There are no points in ℝ
    ⎜ between 0 and all the unit fractions
    ⎝ (which is what I mean here by 'infinitesimal').

    Thank you in advance.

    Well, first of all there's a quibble that
    R is not usually said to contain Q as much as that
    there's that in real-values that
    there's a copy of Q embedded in R.

    I take your lack of an explicit rejection of
    the Dedekind.complete continuum.consensus
    to be an implicit acceptance of
    the Dedekind.complete continuum.consensus.

    A quibble for your quibble:
    A set isomorphic to ℚ is usually said to _be_ ℚ
    Each model of ℚ is ℚ

    A model of complete.ordered.field ℝ supersets
    a model of rational.ordered.field ℚ,
    which is to say, ℝ contains ℚ

    I think that you (RF) are pointing to this:

    ⎛ Consider a model ℚ₀ of the rationals
    ⎜ which has only urelements.

    ⎜ Using ℚ₀ construct
    ⎜ a model of ℝ complete ordered field
    ⎜ in any of several known ways:
    ⎜ a partition of Cauchy sequences of rationals,
    ⎜ open.foresplits of rationals,
    ⎜ or something else.

    ⎜ The set ℝₛ of open.foresplits of ℚ₀
    ⎜ { S⊆ℚ₀: {}≠Sᵉᵃᶜʰ<ₑₓᵢₛₜₛSᵉᵃᶜʰ<ᵉᵃᶜʰℚ₀\S≠{} }
    ⎜ is a model of ℝ
    ⎜ It holds an open foresplit for each irrational point,
    ⎜ and an open foresplit for each rational point

    ⎜ The set ℚₛ of open.foresplits for rationals
    ⎜ { {q′∈ℚ₀:q′<q}: q∈ℚ₀ }
    ⎝ is not ℚ₀

    Yes,
    ℚₛ ≠ ℚ₀
    However,
    both ℚₛ and ℚ₀ are models of ℚ,
    we say both ℚₛ and ℚ₀ we are ℚ,
    Each theorem we prove for ℚ,
    for example, that no element of ℚ is √2,
    is true of both ℚₛ and ℚ₀,
    and that's enough for (consensus) us.

    The, "1/N unit fractions", what is that,
    that does not have a definition.

    Read a bit more and you'll see a definition.

    Is that some WM-speak?
    I suppose that
    if it means the set 1/n for n in N
    then the g-l-b is zero.

    Thank you.
    My motivation has been to find out if you accept that.
    The rest is to make sure we're talking about
    the same things.

    Because
    g.l.b of ⅟ℕ (⅟n for n in ℕ) is 0
    there is no positive lower bound of ⅟ℕ

    A point between 0 and ⅟ℕ would be
    a positive lower bound of ⅟ℕ
    Such a point doesn't exist.

    When I say infinitesimals don't exist,
    I mean points between 0 and set ⅟ℕ
    in the complete.ordered.field
    don't exist.

    When I say that, and then you name.check
    various other systems which have infinitesimals,
    it _sounds to me_ as though
    you object to my claim.
    All of this has been my attempt to sort out
    _what you're saying_

    Then otherwise what you have there appear facts
    about N and R.

    They're facts which identify ℕ and ℝ from among
    a host of other possible things.called ℕ or ℝ
    I take your lack of an explicit rejection
    to be an implicit acceptance, and
    I take you and I to be talking about
    the same ℕ and the same ℝ

    Then,
    where there exists a well-ordering of R,
    then to take the well-ordering it results that
    first there's a well-ordering of [0,1]
    for both simplicity and necessity,

    Yes.
    Note that a well.order of ℝ
    is not the usual order of ℝ

    However,
    well.orders being well.orders,
    a well.order for ℝ is
    a well.order for each subset of ℝ,
    including [0,1]
    and is also not the usual order of [0,1]

    and it's as the range of the function n/d
    with 0 <= n < d and as d -> oo,
    i.e., only in the infinite limit,
    that the properties of the range of naturals,
    apply to the properties of the range of [0,1].

    No.

    lim.infᵈᐧᐧᐧ⟨0/d,1/d,...,d/d⟩ ⊆ limᵈᐧᐧᐧ⟨0/d,1/d,...,d/d⟩ ⊆ lim.supᵈᐧᐧᐧ⟨0/d,1/d,...,d/d⟩

    ⋃ᵈᐧᐧᐧ⋂ᵈᑉᵐᐧᐧᐧ⟨0/m,1/m,...,m/m⟩ ⊆ limᵈᐧᐧᐧ⟨0/d,1/d,...,d/d⟩ ⊆ ⋂ᵈᐧᐧᐧ⋃ᵈᑉᵐᐧᐧᐧ⟨0/m,1/m,...,m/m⟩

    ⋃ᵈᐧᐧᐧ{0,1} ⊆
    limᵈᐧᐧᐧ⟨0/d,1/d,...,d/d⟩ ⊆
    ⋂ᵈᐧᐧᐧ[0,1]∩ℚ

    {0,1} ⊆
    limᵈᐧᐧᐧ⟨0/d,1/d,...,d/d⟩ ⊆
    [0,1]∩ℚ ⊉ [0,1]

    limᵈᐧᐧᐧ⟨0/d,1/d,...,d/d⟩ ≠ [0,1]

    ----
    I have been less bewildered by your (RF's) responses
    since I have started to think of your posts as
    brainstorming exercises with the prompt being
    the previous post,
    especially its last dozen lines.
    https://en.wikipedia.org/wiki/Brainstorming

    I can't guess if you'd consider that good or bad.
    I thought you deserved to know how
    what you're sending out
    is being received.
    Received by me, anyway.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Wed Oct 2 16:07:03 2024
    On 10/2/2024 7:12 AM, WM wrote:
    On 01.10.2024 22:05, Jim Burns wrote:

    For every nonzero distance d from 0
    there are ℵ₀.many unit.fractions closer than d

    That means
    there is no d by what
    you can distinguish ℵ₀ unit fractions?

    You (WM) require us to guess
    what you mean by 'distinguish'.

    There is no d between
    ℵ₀.many.smaller.unit.fractions and slightly.fewer.than.ℵ₀.many.smaller.unit.fractions.

    ...because
    ∀ᴿd>0:
    ⎛ u(k) = ⅟⌈k+⅟d⌉
    ⎜ u: ℕ → (0,d]: one.to.one
    ⎝ NUF(d) = |u(ℕ)| = |ℕ| = ℵ₀

    But finite sets don't act like that!
    Right.
    Finite sets don't act like that.

    Assuming all sets are finite leads to gibberish.

    --- SoupGate-Win32 v1.05
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  • From Jim Burns@21:1/5 to what has and hasn't been on Wed Oct 2 17:06:28 2024
    On 10/2/2024 7:10 AM, WM wrote:
    On 01.10.2024 22:05, Jim Burns wrote:
    On 10/1/2024 1:29 PM, WM wrote:

    What is incorrect?

    This is incorrect:
    🛇⎛ ∀n ∈ ℕ: 1/n - 1/(n+1) > 0  shows that
    🛇⎜ at no point x
    🛇⎝ NUF can increase by more than one step 1.

    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0  doesn't show that.

    You [JB] believe that

    if each unit.fraction is preceded
    then no first unit.fraction exists.

    You (WM) believe in quantifier shifts,
    the opposite of that.

    You believe that
    more than one unit fractions
    can occupy one and the same point
    nevertheless?

    No.

    That would make the distance 0,
    but it is > 0.
    Therefore you are wrong.

    Therefore you are wrong about
    what has and hasn't been said,
    which greatly reduces the value of
    anything you have to say.

    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0
    shows
    ∀n ∈ ℕ: 1/n  >  1/(n+1) > 0
    which shows
    each unit fraction 1/n is not first.

    No.
    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0
    does not prove that n+1 is a natural number.
    Note the infinite sequence
    1, 2, 3, ..., ω-2, ω-1, ω.
    It consists of infinitely many finite numbers.

    A non.0 ordinal β with predecessor β-1: (β-1)+1=β
    and each non.0 α < β with predecessor α-1: (α-1)+1=α
    is a finite ordinal.
    An infinite ordinal is an ordinal Not.Like.That.

    ⎛ You (WM) mean something else by 'infinite',
    ⎜ some vague 'reallyreallybig', which generates
    ⎝ plenty of gibberish for you to roll around in.

    Note the infinite sequence
    1, 2, 3, ..., ω-2, ω-1, ω

    ...is a _finite_ sequence.
    As you have written it,
    ω and each non.0 α < ω has a predecessor,
    which makes ω finite.

    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0
    does not prove that n+1 is a natural number.

    If non.0 β is finite
    then
    β and each non.0 α < β have predecessors
    and
    β+1 and each non.0 α < β+1 have predecessors
    and
    β+1 is finite.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Wed Oct 2 19:03:32 2024
    On 10/2/24 7:57 AM, WM wrote:
    On 02.10.2024 13:17, Richard Damon wrote:
    On 10/1/24 1:39 PM, WM wrote:
    On 01.10.2024 01:14, Richard Damon wrote:
    On 9/30/24 11:15 AM, WM wrote:
    On 30.09.2024 00:29, FromTheRafters wrote:
    WM explained on 9/29/2024 :
    On 28.09.2024 00:08, FromTheRafters wrote:
    WM presented the following explanation :

    Between two unit fractions there is always a finite gap.
    ;
    How big?

    In terms of set theory: uncountably many points.

    How wide are these points?

    More than nothing.

    But it must be next to nothing,

    No, between them and nothing there are infinitely many countable sets
    and then finite sets of points.

    So your "smallest" wasn't the smallest,

    Of course all gaps between unit fractions are made of more than finitely
    many points. I never denied that.

    But that also means that no point are "next to" each other.



    which becomes nothing when we get to the actual infinite set.

    Not in mathematics.

    Sure it does.

    Try to learn the basics and to understand ∀n ∈ ℕ: 1/n - 1/(n+1) > 0.

    Which means that for all n that are in the Natural numbers, for the unit fraction 1/n, theree DOES EXIST another unit fraction 1/(n+1) that is
    smaller than it.

    Thus, *NO* unit fraction can be found to be the smallest. EVER, not even
    "Dark" as if your dark number are members of the Natural Numbers as you
    claim, they must still follow that property, since you claim it for
    *ALL* Natural numbers.

    Sorry, your logic is just blown to smithereens by its inconsistencies.


    Regards, WMK


    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Wed Oct 2 19:04:48 2024
    On 10/2/24 7:54 AM, WM wrote:
    On 02.10.2024 13:30, FromTheRafters wrote:
    WM pretended :

    No. ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 does not prove that n+1 is a natural >>> number. Note the infinite sequence
    1, 2, 3, ..., ω-2, ω-1, ω.

    Omega minus one or two is undefined

    Yes in so far as these natural numbers are dark and cannot be reached by
    a FISON.

    and n plus one closure is axiomatic.

    But it is in contradiction with NUF(x) passing 1. Do you understand that NUF(x) can nowhere increase by more than 1?

    Regards, WM



    Which shows the problems with your NUF, not the theory of Natural Numbers.

    Your brain is just totally exploded from those inconsistencies, making
    you not understand what you are talking about.

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Wed Oct 2 19:06:16 2024
    On 10/2/24 9:49 AM, WM wrote:
    On 02.10.2024 14:56, joes wrote:
    Am Wed, 02 Oct 2024 13:10:09 +0200 schrieb WM:
    On 01.10.2024 22:05, Jim Burns wrote:
    On 10/1/2024 1:29 PM, WM wrote:

    This is incorrect:
    🛇⎛ ∀n ∈ ℕ: 1/n - 1/(n+1) > 0  shows that 🛇⎜ at no point x 🛇⎝ NUF can
    increase by more than one step 1.
    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0  doesn't show that.
    You believe that more than one unit fractions can occupy one and the
    same point nevertheless? That would make the distance 0, but it is > 0.
    Therefore you are wrong.
    Nobody believes that. It just doesn’t follow.

    It follows that either all unit fractions are at different places (then
    NUF grows one by one) or not. Then at least two are at the same place.
    There are no further alternatives.

    Regards, WM

    NUF only grows by one if it is at a finite value. Since it doesn't have
    a finite value at ANY value of x > 0, your logic breaks.

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  • From Richard Damon@21:1/5 to All on Wed Oct 2 19:27:33 2024
    On 10/2/24 8:00 AM, WM wrote:
    On 02.10.2024 13:21, Richard Damon wrote:
    On 10/1/24 1:37 PM, WM wrote:
    On 01.10.2024 01:11, Richard Damon wrote:

    For ANY finite x, NUF(x) will be Aleph_0, since there is an infinite
    number of unit fractions smaller than it.

    You claim that ℵo unit fractions are already there, whatever x > 0
    you choose. That means they cannot be chosen. They are dark.

    Nope.

    Show a counter example leaving less than ℵo smaller unit fractions undefined. Fail.

    Regards, WM


    That isn't a valid request.

    Your asking for it just shows you don't know what you are talking about.

    Sorry, you are just proving your stupidity.

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  • From Jim Burns@21:1/5 to Ross Finlayson on Thu Oct 3 12:14:53 2024
    On 10/2/2024 10:01 PM, Ross Finlayson wrote:
    On 10/02/2024 11:57 AM, Jim Burns wrote:

    [...]

    Such casual extensionality as
    "these Q's are those Q's"
    is certainly usual,

    Since we aren't being lax here,
    you should say
    ⎛ Such casual isomorphistry as
    ⎜ "these Q's are those Q's"
    ⎝ is certainly usual,

    It is _up to isomorphism_ that
    ℚ₀ is the same as ℚₛ =
    { {q′∈ℚ₀:q′<q}: q∈ℚ₀ }

    ℝₛ = {open.foresplits of ℚ₀} =
    { S⊆ℚ₀: {}≠Sᵉᵃᶜʰ<ₑₓᵢₛₜₛSᵉᵃᶜʰ<ᵉᵃᶜʰℚ₀\S≠{} }
    is the complete.ordered.field
    ℚ₀ ⊈ ℝₛ
    ℚₛ ⊆ ℝₛ

    Sorry for any confusion caused by
    my not.using the i.word earlier.

    it's considered a lax sort of accommodation
    that thereafter
    that "all proofs reflecting on a model of Q
    will be as entirely agnostic to
    the actual set modeling Q
    as any other may do,
    only fulfilling the role of the model of Q
    of representing structurally all the relations
    of all the elements of Q
    with all the elements
    of all the elements
    of other structures so related,
    model theory".

    When you say
    it's considered a lax sort of accommodation
    who is it who is doing this considering?
    Are they unaware that
    there are proofs of isomorphistry?
    Do they consider proofs lax accommodation?

    Then about how you find
    properties of the function _in_ the limit
    _as_ a limit,
    it's that:
    those properties don't exist at all,
    that function doesn't exist at all
    except _in the limit_.
    Now, you're talking about
    a family of functions that model
    this not-a-real-function, in the limit,
    yet, they are not it, in the limit.

    Are you still talking there about
    what you earlier were talking about in this way
    ⎛ the range of the function n/d
    ⎜ with 0 <= n < d and as d -> oo,
    ⎝ i.e., only in the infinite limit,


    Isn't
    the range of n/d with 0≤n≤d
    the set ⟨0/d,1/d,...,d/d⟩ ?

    Isn't
    limᵈᐧᐧᐧ⟨0/d,1/d,...,d/d⟩
    the limit of a sequence of sets?

    Is the limit you're talking about
    some limᵈᐧᐧᐧ f(d) which _does not_ fall between
    lim.infᵈᐧᐧᐧ f(d) and lim.supᵈᐧᐧᐧ f(d) ?

    What "limit" is it you're talking about?

    This way the extent, density, completeness,
    and measure, aren't from being the union
    of ranges of functions that model it,
    they're the infinite integers in it.

    Ah, "infinite integers" is you brainstorming:
    tossing creative options into the discussion.

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  • From Jim Burns@21:1/5 to Ross Finlayson on Thu Oct 3 14:10:33 2024
    On 10/3/2024 12:49 PM, Ross Finlayson wrote:
    On 10/03/2024 09:14 AM, Jim Burns wrote:
    On 10/2/2024 10:01 PM, Ross Finlayson wrote:

    Such casual extensionality as
    "these Q's are those Q's"
    is certainly usual,

    Since we aren't being lax here,
    you should say
    ⎛ Such casual isomorphistry as
    ⎜ "these Q's are those Q's"
    ⎝ is certainly usual,

    The "up to isomorphism" like "the reals are
    the complete ordered field 'up to isomorphism'",
    does _not_ have that R = C, and indeed it is
    so that R =/= C, so,
    no, we do not say "isomorphistry".

    ℝ is not isomorphic to ℂ
    ℚ₀ is isomorphic to ℚₛ

    The casual isomorphistry of
    ℚ₀ is (implicitly.isomorphic.to) ℚₛ
    is usual.

    Having the properties of a complete ordered field,
    and, being analytic under continuous functions,
    then, maintaining analyticity under
    transforms of continuous functions,
    is _not_ something that R and C both have,

    Yes. "not".

    so, the usual idea that
    "the reals R are unique up to isomorphism
    the complete ordered field",
    gets broken

    The usual idea of ℝ unique.up.to.isomorphism
    does not involve ℂ
    because ℂ is not the complete ordered field.

    ( ℝ is unique.up.to.isomorphism
    ==
    ⎛ each two models M M′ of
    ⎜ the axioms for the complete ordered field (ℝ)
    ⎝ have a '+-×÷<'.preserving bijection.

    Map identities to identities′.
    Map integers to integers′.
    Map rationals map to rationals′.
    Map least.upper.bounds to least.upper.bounds′.
    _Because_ M and M′ are both complete ordered fields,
    there exists an isomorphism between them.

    and is not considered thorough.

    Who is it who is doing this considering?
    Are they unaware of the proofs?
    Do they consider proofs not thorough?

    The extensionality is
    the term of model theory with regards to that
    a) it's assumed that models are faithful, and
    b) it's assumed that models are equivalent
    in all interpretations, thusly
    c) model Q_1 and Q_2 each a, b are
    extensionally equivalent and considered equals,
    while of course
    no properties of their structure that isn't
    equi-interpretable and bi-relatable
    is considered true for both, and
    such aspects of their consideration are
    with regards to a different theoretical object.

    About "isomorphistry", getting into stuff
    like "equals, 'almost' everywhere", has
    that: "equals, a.e., is _not_, 'equals'".

    And "equals everywhere" _is_ "equals".

    And R, or R^2, and C, "up to isomorphism",
    are _not_ equals.

    ℚ₀ from which ℝₛ is constructed and
    ℚₛ a subset of ℝₛ
    _are_ equals.

    How does someone make a claim to you (RF) that
    is _not_ subject to being carried off and
    put to work in foreign contexts?

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  • From WM@21:1/5 to FromTheRafters on Thu Oct 3 20:20:52 2024
    On 02.10.2024 21:44, FromTheRafters wrote:
    WM formulated the question :

    But it is in contradiction with NUF(x) passing 1. Do you understand
    that NUF(x) can nowhere increase by more than 1?

    Nowhere but in your mind is that 'passing' a necessity.

    If all fractions are separated real points on the real axis, then there
    must be a first one.

    Regards, WM

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  • From WM@21:1/5 to Jim Burns on Thu Oct 3 20:25:07 2024
    On 02.10.2024 22:07, Jim Burns wrote:
    On 10/2/2024 7:12 AM, WM wrote:
    On 01.10.2024 22:05, Jim Burns wrote:

    For every nonzero distance d from 0
    there are ℵ₀.many unit.fractions closer than d

    That means
    there is no d by what
    you can distinguish ℵ₀ unit fractions?

    You (WM) require us to guess
    what you mean by 'distinguish'.

    You distinguish two unit fractions 1/n and 1/m if you place a point in
    distance d from 0 between them: 1/n < d < 1/m.

    There is no d between
    ℵ₀.many.smaller.unit.fractions and slightly.fewer.than.ℵ₀.many.smaller.unit.fractions.

    That means you cannot distinguish ℵ₀ smaller unit fractions.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Thu Oct 3 20:34:20 2024
    On 03.10.2024 01:03, Richard Damon wrote:
    On 10/2/24 7:57 AM, WM wrote:

    Of course all gaps between unit fractions are made of more than
    finitely many points. I never denied that.

    But that also means that no point are "next to" each other.

    Therefore NUF can increase at most by 1 at every real point.


    Try to learn the basics and to understand ∀n ∈ ℕ: 1/n - 1/(n+1) > 0.

    Which means that for all n that are in the Natural numbers, for the unit fraction  1/n, theree DOES EXIST another unit fraction 1/(n+1) that is smaller than it.

    That is true for all visible and most dark numbers bu not for all.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Thu Oct 3 20:36:32 2024
    On 03.10.2024 01:06, Richard Damon wrote:

    NUF only grows by one if it is at a finite value. Since it doesn't have
    a finite value at ANY value of x > 0,

    It has 0 at 0. And it cannot increase at any x > 0 by more than 1.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Thu Oct 3 20:37:47 2024
    On 03.10.2024 01:27, Richard Damon wrote:
    On 10/2/24 8:00 AM, WM wrote:

    Show a counter example leaving less than ℵo smaller unit fractions
    undefined. Fail.

    That isn't a valid request.

    Why? Because you cannot? That shows the dark numbers.

    Regards, WM

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  • From WM@21:1/5 to Jim Burns on Thu Oct 3 20:31:41 2024
    On 02.10.2024 23:06, Jim Burns wrote:
    On 10/2/2024 7:10 AM, WM wrote:


    You (WM) believe in quantifier shifts,
    the opposite of that.

    I believe that if every n that can be chosen has ℵ₀ successors, then all
    n that can be chosen have ℵ₀ successors. Proof by your inability to contradict this.

    You believe that
    more than one unit fractions
    can occupy one and the same point
    nevertheless?

    No.

    Then NUF can increase at every point by at most 1.
    1, 2, 3, ..., ω-2, ω-1, ω

    ...is a _finite_ sequence.
    As you have written it,
    ω and each non.0 α < ω has a predecessor,
    which makes ω finite.

    The predecessors in the dark realm cannot be known. You can subtract
    every natural number from ω without traversing the dark realm. You can
    add every natural number to every natural number without traversing the
    dark realm. That is the essence of infinity!

    Regards, WM

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  • From WM@21:1/5 to FromTheRafters on Thu Oct 3 21:49:34 2024
    On 03.10.2024 20:40, FromTheRafters wrote:
    WM used his keyboard to write :
    On 02.10.2024 21:44, FromTheRafters wrote:
    WM formulated the question :

    But it is in contradiction with NUF(x) passing 1. Do you understand
    that NUF(x) can nowhere increase by more than 1?

    Nowhere but in your mind is that 'passing' a necessity.

    If all fractions are separated real points on the real axis, then
    there must be a first one.

    Still wrong. Because you say so is not enough to convince anyone.

    Everyone I consider worthy to talk to knows it.

    Regards, WM

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  • From WM@21:1/5 to joes on Fri Sep 27 20:42:06 2024
    On 25.09.2024 18:39, joes wrote:
    Am Wed, 25 Sep 2024 17:51:56 +0200 schrieb WM:

    NUF(x) distinguishes all points.
    How does it distinguish dark points?

    By our mathematical knowledge about ∀n ∈ ℕ: 1/n - 1/(n+1) > 0

    NUF increases. At no point it can increase by more than 1.
    Right, and there is no point "next to" 0

    There is a unit fraction next to 0.

    Even if most mathematicians are far too stupid to understand this, I
    will repeat it on and on, maybe that sometime some will get it.
    You should try explaining it a different way.

    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0
    is invincible.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Fri Sep 27 20:57:37 2024
    On 25.09.2024 19:28, Richard Damon wrote:
    On 9/24/24 3:30 PM, WM wrote:

    The largest number that you can choose depends on your facilities.
    Consider the largest number available on your pocket calculator.

    Mathematics isn't based on what WE can do, but on what the numbers
    themselves can do,

    They cannot do anything. They simply are created in potential infinity
    or are there in actual infinity.

    Regards, WM

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  • From WM@21:1/5 to joes on Fri Sep 27 20:44:46 2024
    On 25.09.2024 18:41, joes wrote:
    Am Wed, 25 Sep 2024 17:32:15 +0200 schrieb WM:

    It is a mathematical function. It is assumed to see dark numbers. You
    believe that infinitely many of the smallest fractions cannot be
    distinguished. So you believe in dark numbers too.

    We can "distinguish" them.

    You believe that NUF increases at 0 by ℵo unit fractions. How could you distinguish them?

    Regards, WM

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  • From WM@21:1/5 to Jim Burns on Fri Sep 27 20:54:05 2024
    On 25.09.2024 20:40, Jim Burns wrote:
    On 9/25/2024 11:51 AM, WM wrote:

    That means NUF increases by 1
    at every point occupied by a unit fraction.

    There are numbers (cardinalities) which increase by 1
    and other numbers (cardinalities), which
    don't increase by 1.

    No. Every countable set is countable, i.e., it increases one by one.

    For each positive point x
    for each number (cardinality) k which can increase by 1
    there are more.than.k unit.fractions between 0 and x

    That is a misinterpretation of the law valid for small numbers.

    For each positive point x
    the number (cardinality) of unit.fractions between 0 and x
    is not
    any number (cardinality) which increases by 1
    Instead, it is
    a number (cardinality) which doesn't increase by 1.

    For every x NUF increases by not more than 1.

    Each positive point is undercut by
    some finite.unit.fraction.

    Repetition is apparently what you (JB) think mathematics is!

    Prove that ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 is wrong or agree.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Fri Sep 27 21:00:11 2024
    On 25.09.2024 19:25, Richard Damon wrote:

    What values, that EXIST, can't be distinguished.

    You cannot distinguish the ℵo smallest unit fractions. You cannot select
    a unit fractions with less smaller unit fractions.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Fri Sep 27 21:02:04 2024
    On 25.09.2024 19:22, Richard Damon wrote:
    On 9/25/24 11:14 AM, WM wrote:
    NUF increases. At no point it can increase by
    more than 1.

    Why not?

    Because there is a finite gap between two unit fractions.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Fri Sep 27 21:06:08 2024
    On 25.09.2024 19:12, Richard Damon wrote:

    The problem is that it turns out the NUF(x) NEVER actually "increments"
    by 0ne at any finite point, it jumps from 0 to infinity (Aleph_0) in the unboundedly small gap between 0 and all x > 0,

    How do you distinguish them?

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Fri Sep 27 21:04:15 2024
    On 25.09.2024 19:19, Richard Damon wrote:
    On 9/25/24 11:32 AM, WM wrote:

    I do NOT believe that there ANY "smallest" factions that cannot be distingusished, I know such a thing does not exist, and that ALL unit fractions, like all rationals and reals can be distinguished,

    The claim of all requires a last one.

    Regards, WM

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  • From WM@21:1/5 to Moebius on Fri Sep 27 21:08:46 2024
    On 25.09.2024 18:53, Moebius wrote:
    On 9/24/24 3:43 PM, WM wrote:

    I think that [the] mathematics of fractions is correct.
    It contains ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 from which follows that never >>>>> two different5 fractions sit upon each other. From NUF(0) = 0 the
    [existence of the] smallest unit fraction follows immediately

    Proof?

    Between two unit fractions there is always a finite gap.

    Regards, WM

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  • From joes@21:1/5 to All on Fri Sep 27 19:51:56 2024
    Am Fri, 27 Sep 2024 21:04:15 +0200 schrieb WM:
    On 25.09.2024 19:19, Richard Damon wrote:
    On 9/25/24 11:32 AM, WM wrote:

    I do NOT believe that there ANY "smallest" factions that cannot be
    distingusished, I know such a thing does not exist, and that ALL unit
    fractions, like all rationals and reals can be distinguished,
    The claim of all requires a last one.
    No. Can you not conceptualise in infinite whole?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to All on Fri Sep 27 19:54:27 2024
    Am Fri, 27 Sep 2024 21:00:11 +0200 schrieb WM:
    On 25.09.2024 19:25, Richard Damon wrote:

    What values, that EXIST, can't be distinguished.
    You cannot distinguish the ℵo smallest unit fractions. You cannot select
    a unit fractions with less smaller unit fractions.
    Which ones are those? Clearly you can „distinguish” (please define)
    some UFs.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to All on Fri Sep 27 20:12:15 2024
    Am Fri, 27 Sep 2024 20:42:06 +0200 schrieb WM:
    On 25.09.2024 18:39, joes wrote:
    Am Wed, 25 Sep 2024 17:51:56 +0200 schrieb WM:

    NUF(x) distinguishes all points.
    How does it distinguish dark points?
    By our mathematical knowledge about ∀n ∈ ℕ: 1/n - 1/(n+1) > 0
    How can you talk about a dark n and it’s (maybe) n+1?

    NUF increases. At no point it can increase by more than 1.
    Right, and there is no point "next to" 0
    There is a unit fraction next to 0.
    Is it closer to zero or to the next UF?

    Even if most mathematicians are far too stupid to understand this, I
    will repeat it on and on, maybe that sometime some will get it.
    You should try explaining it a different way.
    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 is invincible.
    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From Moebius@21:1/5 to All on Fri Sep 27 22:20:32 2024
    Am 27.09.2024 um 22:19 schrieb Moebius:
    Am 27.09.2024 um 22:12 schrieb joes:
    Am Fri, 27 Sep 2024 20:42:06 +0200 schrieb WM:
    On 25.09.2024 18:39, joes wrote:

    You should try explaining it a different way.

    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 is invincible. [W. Mückenheim]

    Well put!

    I mean, from this fact EVERYTHING follows!!!

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  • From Moebius@21:1/5 to All on Fri Sep 27 22:19:49 2024
    Am 27.09.2024 um 22:12 schrieb joes:
    Am Fri, 27 Sep 2024 20:42:06 +0200 schrieb WM:
    On 25.09.2024 18:39, joes wrote:

    You should try explaining it a different way.

    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 is invincible. [W. Mückenheim]

    Well put!

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  • From Richard Damon@21:1/5 to All on Sat Sep 28 07:08:22 2024
    On 9/27/24 3:08 PM, WM wrote:
    On 25.09.2024 18:53, Moebius wrote:
    On 9/24/24 3:43 PM, WM wrote:

    I think that [the] mathematics of fractions is correct.
    It contains ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 from which follows that never
    two different5 fractions sit upon each other. From NUF(0) = 0 the
    [existence of the] smallest unit fraction follows immediately

    Proof?

    Between two unit fractions there is always a finite gap.

    Regards, WM

    Which doesn't prove there is a first, just that you are stupid.

    Part of the problem is you don't know what a proof actually is, or even
    how to do real logic.

    In part, because you just don't understand what you are talking about,
    and that is just more proof of your stupidity.

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  • From Richard Damon@21:1/5 to All on Sat Sep 28 07:12:27 2024
    On 9/27/24 2:42 PM, WM wrote:
    On 25.09.2024 18:39, joes wrote:
    Am Wed, 25 Sep 2024 17:51:56 +0200 schrieb WM:

    NUF(x) distinguishes all points.
    How does it distinguish dark points?

    By our mathematical knowledge about ∀n ∈ ℕ: 1/n - 1/(n+1) > 0


    Which means for any 1/n, there exist a 1/(n+1) that is smaller than it,
    and thus there is no smallest 1/n.


    NUF increases. At no point it can increase by more than 1.
    Right, and there is no point "next to" 0

    There is a unit fraction next to 0.

    Nope. "Next To" isn't a property of that set.


    Even if most mathematicians are far too stupid to understand this, I
    will repeat it on and on, maybe that sometime some will get it.
    You should try explaining it a different way.

    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0
    is invincible.

    Right, and thus, for *ANY* 1/n, there exist a 1/(n+1) that will be
    smaller than it.

    PERIOD.

    Since, one property of ℕ is that ∀n ∈ ℕ, the value n+1 exists, and (n+1) ∈ ℕ

    You ignore this FACT because it proves your wrong, showing that you are
    nothing but a STUPID LIAR.


    Regards, WM



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  • From Richard Damon@21:1/5 to All on Thu Oct 3 18:55:24 2024
    On 10/3/24 2:34 PM, WM wrote:
    On 03.10.2024 01:03, Richard Damon wrote:
    On 10/2/24 7:57 AM, WM wrote:

    Of course all gaps between unit fractions are made of more than
    finitely many points. I never denied that.

    But that also means that no point are "next to" each other.

    Therefore NUF can increase at most by 1 at every real point.

    Why?

    If NUF(x) counts the unit fractions u < x, then NUF doesn't increase at
    ANY points, as the "point" it increases isn't a point, but the
    adjacently that isn't a point to the unit fractions,

    If NUF(x) counts the unit fractions u <= x, then there isn't a point for
    NUF(x) to increase by 1 and there isn't a "smallest" unit fraction to
    increase from 0 to 1, as EVERY unit fraction has smaller unit fractions
    than itself (Aleph_0 of them to be exact), and also it doesn't increase
    by one at any of the finite unit factions, as it has already reached
    Aleph_0 by them, and Aleph_0 can't be "increased" by 1, as that is still
    the same number.



    Try to learn the basics and to understand ∀n ∈ ℕ: 1/n - 1/(n+1) > 0. >>
    Which means that for all n that are in the Natural numbers, for the
    unit fraction  1/n, theree DOES EXIST another unit fraction 1/(n+1)
    that is smaller than it.

    That is true for all visible and most dark numbers bu not for all.

    But all Natural Nunbers are visible, as they havd a definition, and
    thuys you are just admitting that your logic system doesn't actually
    have the Natural Nubmers, because you logic has just been exploded by
    its inconsistanc, and you are shos to be nothing by an ignorant liar.

    All you are doing is showing you don't know what the Natural Numbers are defined to be, and then LIE about their properties.


    Regards, WM


    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Thu Oct 3 21:18:46 2024
    On 10/3/24 3:49 PM, WM wrote:
    On 03.10.2024 20:40, FromTheRafters wrote:
    WM used his keyboard to write :
    On 02.10.2024 21:44, FromTheRafters wrote:
    WM formulated the question :

    But it is in contradiction with NUF(x) passing 1. Do you understand
    that NUF(x) can nowhere increase by more than 1?

    Nowhere but in your mind is that 'passing' a necessity.

    If all fractions are separated real points on the real axis, then
    there must be a first one.

    Still wrong. Because you say so is not enough to convince anyone.

    Everyone I consider worthy to talk to knows it.

    Regards, WM




    Which just shows that your judgement of people is as bad as your
    knowledge of Mathematics.

    Sorry, you are just proving you are a stupid ignorant idiot that has had
    his brain exploded by the contradictions in his logic.

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  • From Richard Damon@21:1/5 to All on Thu Oct 3 21:22:03 2024
    On 10/3/24 2:36 PM, WM wrote:
    On 03.10.2024 01:06, Richard Damon wrote:

    NUF only grows by one if it is at a finite value. Since it doesn't
    have a finite value at ANY value of x > 0,

    It has 0 at 0. And it cannot increase at any x > 0 by more than 1.

    Regards, WM


    And thus, since it wants to move by discreet points, can't move off of
    0, as there is no "next" point to step to.

    Just like there is no last Natural Number just below Omega, there is no
    lowest unit fraction, or lowest Real or Rational Number for NUF to step to.

    Thus, you NUF can't get off of 0 except by EXPLODING itself all the way
    to Aleph_0.

    Sorry, you are just proving that the contradictions in your broken logic (because it is applied outside its domain).

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Thu Oct 3 21:25:28 2024
    On 10/3/24 2:37 PM, WM wrote:
    On 03.10.2024 01:27, Richard Damon wrote:
    On 10/2/24 8:00 AM, WM wrote:

    Show a counter example leaving less than ℵo smaller unit fractions
    undefined. Fail.

    That isn't a valid request.

    Why? Because you cannot? That shows the dark numbers.

    Regards, WM


    Then show me a circle with exactly 4 corners?

    Or What is the Natural Number between 1 and 2?

    Or What is the Natural Number below 0?

    Asking for impossible things just prove that your logic is broken.

    Sorry, you are just proving you are nothing but a stupid idiot.

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Thu Oct 3 21:23:22 2024
    On 10/3/24 2:25 PM, WM wrote:
    On 02.10.2024 22:07, Jim Burns wrote:
    On 10/2/2024 7:12 AM, WM wrote:
    On 01.10.2024 22:05, Jim Burns wrote:

    For every nonzero distance d from 0
    there are ℵ₀.many unit.fractions closer than d

    That means
    there is no d by what
    you can distinguish ℵ₀ unit fractions?

    You (WM) require us to guess
    what you mean by 'distinguish'.

    You distinguish two unit fractions 1/n and 1/m if you place a point in distance d from 0 between them: 1/n < d < 1/m.

    There is no d between
    ℵ₀.many.smaller.unit.fractions and
    slightly.fewer.than.ℵ₀.many.smaller.unit.fractions.

    That means you cannot distinguish ℵ₀ smaller unit fractions.

    Regards, WM

    Sure we can, we just can't find any that have less than Aleph_0 numbers
    below them since those numbers don't exist.

    Your logic just can't handle numbers like Aleph_0, and thus has exploded
    your brain when you made it try.

    --- SoupGate-Win32 v1.05
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  • From joes@21:1/5 to All on Fri Oct 4 08:11:59 2024
    Am Thu, 03 Oct 2024 20:31:41 +0200 schrieb WM:
    On 02.10.2024 23:06, Jim Burns wrote:
    On 10/2/2024 7:10 AM, WM wrote:

    You (WM) believe in quantifier shifts,
    the opposite of that.
    I believe that if every n that can be chosen has ℵ₀ successors, then all n that can be chosen have ℵ₀ successors. Proof by your inability to contradict this.
    That is not the same thing, but an invalid deduction.

    You believe that more than one unit fractions can occupy one and the
    same point nevertheless?
    No.
    Then NUF can increase at every point by at most 1.
    1, 2, 3, ..., ω-2, ω-1, ω
    ...is a _finite_ sequence.
    As you have written it,
    ω and each non.0 α < ω has a predecessor,
    which makes ω finite.
    The predecessors in the dark realm cannot be known. You can subtract
    every natural number from ω without traversing the dark realm. You can
    add every natural number to every natural number without traversing the
    dark realm. That is the essence of infinity!
    No, the infinity is at the end, not in the middle.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
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  • From Moebius@21:1/5 to All on Fri Oct 4 10:17:57 2024
    Am 04.10.2024 um 10:11 schrieb joes:
    Am Thu, 03 Oct 2024 20:31:41 +0200 schrieb WM:

    [Bla bla bla] That is the essence of infinity!
    You'd rather read Peter Suber's "Infinite Reflections", Mückenheim.

    Source: http://legacy.earlham.edu/~peters/writing/infinity.htm

    --- SoupGate-Win32 v1.05
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  • From Moebius@21:1/5 to All on Fri Oct 4 10:22:38 2024
    Am 04.10.2024 um 10:17 schrieb joes:
    Am Thu, 03 Oct 2024 20:20:52 +0200 schrieb WM:

    If all fractions are separated real points on the real axis, then there
    must be a first one.

    Nope.

    Hint: The harmonic series is divergent [at least in mathematics].

    No, they get denser toward zero, because you can always fit points
    inbetween.


    --- SoupGate-Win32 v1.05
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  • From joes@21:1/5 to All on Fri Oct 4 08:17:41 2024
    Am Thu, 03 Oct 2024 20:20:52 +0200 schrieb WM:
    On 02.10.2024 21:44, FromTheRafters wrote:
    WM formulated the question :

    But it is in contradiction with NUF(x) passing 1. Do you understand
    that NUF(x) can nowhere increase by more than 1?
    Nowhere but in your mind is that 'passing' a necessity.
    If all fractions are separated real points on the real axis, then there
    must be a first one.
    No, they get denser toward zero, because you can always fit points
    inbetween.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Fri Oct 4 08:29:29 2024
    Am Thu, 03 Oct 2024 20:25:07 +0200 schrieb WM:
    On 02.10.2024 22:07, Jim Burns wrote:
    On 10/2/2024 7:12 AM, WM wrote:
    On 01.10.2024 22:05, Jim Burns wrote:

    For every nonzero distance d from 0 there are ℵ₀.many unit.fractions >>>> closer than d
    That means there is no d by what you can distinguish ℵ₀ unit
    fractions?
    You (WM) require us to guess what you mean by 'distinguish'.
    You distinguish two unit fractions 1/n and 1/m if you place a point in distance d from 0 between them: 1/n < d < 1/m.
    Which is always possible.

    There is no d between ℵ₀.many.smaller.unit.fractions and
    slightly.fewer.than.ℵ₀.many.smaller.unit.fractions.
    That means you cannot distinguish ℵ₀ smaller unit fractions.
    Misconception: there is no „slightly fewer than ℵ₀”. An finite
    number subtracted from an infinite is still the same infinite
    number.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Fri Oct 4 08:52:57 2024
    Am Thu, 03 Oct 2024 20:37:47 +0200 schrieb WM:
    On 03.10.2024 01:27, Richard Damon wrote:
    On 10/2/24 8:00 AM, WM wrote:

    Show a counter example leaving less than ℵo smaller unit fractions
    undefined. Fail.
    That isn't a valid request.
    Why? Because you cannot? That shows the dark numbers.
    Or because it is impossible.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Fri Oct 4 09:00:07 2024
    Am Thu, 03 Oct 2024 20:34:20 +0200 schrieb WM:
    On 03.10.2024 01:03, Richard Damon wrote:
    On 10/2/24 7:57 AM, WM wrote:

    Of course all gaps between unit fractions are made of more than
    finitely many points. I never denied that.
    But that also means that no point are "next to" each other.
    Therefore NUF can increase at most by 1 at every real point.
    Try to learn the basics and to understand ∀n ∈ ℕ: 1/n - 1/(n+1) > 0. >> Which means that for all n that are in the Natural numbers, for the
    unit fraction  1/n, theree DOES EXIST another unit fraction 1/(n+1)
    that is smaller than it.
    That is true for all visible and most dark numbers bu not for all.
    What is the distance between the last natural and its successor?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Fri Oct 4 11:27:36 2024
    On 04.10.2024 03:23, Richard Damon wrote:
    On 10/3/24 2:25 PM, WM wrote:

    You distinguish two unit fractions 1/n and 1/m if you place a point in
    distance d from 0 between them: 1/n < d < 1/m.
    That means you cannot distinguish ℵ₀ smaller unit fractions.

    Sure we can, we just can't find any that have less than Aleph_0 numbers
    below them since those numbers don't exist.

    They do. 0 has no unit fraction below it. If the next unit fraction has
    unit fractions below it, then it is not the next. It has ℵ₀ smaller unit fractions below it which cannot be distinguished.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to joes on Fri Oct 4 11:35:40 2024
    On 04.10.2024 10:17, joes wrote:
    Am Thu, 03 Oct 2024 20:20:52 +0200 schrieb WM:
    On 02.10.2024 21:44, FromTheRafters wrote:
    WM formulated the question :

    But it is in contradiction with NUF(x) passing 1. Do you understand
    that NUF(x) can nowhere increase by more than 1?
    Nowhere but in your mind is that 'passing' a necessity.
    If all fractions are separated real points on the real axis, then there
    must be a first one.
    No, they get denser toward zero, because you can always fit points
    inbetween.

    Not between the ℵ₀ smallest successors. Proof: You cannot get rid of
    these successors.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Fri Oct 4 11:23:13 2024
    On 04.10.2024 00:55, Richard Damon wrote:
    On 10/3/24 2:34 PM, WM wrote:
    On 03.10.2024 01:03, Richard Damon wrote:

    But that also means that no point are "next to" each other.

    Therefore NUF can increase at most by 1 at every real point.

    Why?

    This is the precondition: The unit fractions are all existing! If so,
    then they are different fixed points on the positive real line above
    zero. Hence one is the first after zero.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to joes on Fri Oct 4 11:33:02 2024
    On 04.10.2024 10:11, joes wrote:
    Am Thu, 03 Oct 2024 20:31:41 +0200 schrieb WM:
    On 02.10.2024 23:06, Jim Burns wrote:
    On 10/2/2024 7:10 AM, WM wrote:

    You (WM) believe in quantifier shifts,
    the opposite of that.
    I believe that if every n that can be chosen has ℵ₀ successors, then all >> n that can be chosen have ℵ₀ successors. Proof by your inability to
    contradict this.
    That is not the same thing, but an invalid deduction.

    It is fact. What you believe valid or invalid is not of interest to me.
    I know that all numbers which you can choose have ℵ₀ successors.
    Therefore the collection containing all numbers which you can choose has
    ℵ₀ successors.
    1, 2, 3, ..., ω-2, ω-1, ω
    ...is a _finite_ sequence.
    As you have written it,
    ω and each non.0 α < ω has a predecessor,
    which makes ω finite.
    The predecessors in the dark realm cannot be known. You can subtract
    every natural number from ω without traversing the dark realm. You can
    add every natural number to every natural number without traversing the
    dark realm. That is the essence of infinity!
    No, the infinity is at the end, not in the middle.

    A common misbelief about actual infinity based on potential infinity.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Moebius on Fri Oct 4 11:40:41 2024
    On 04.10.2024 10:17, Moebius wrote:
    Am 04.10.2024 um 10:11 schrieb joes:
    Am Thu, 03 Oct 2024 20:31:41 +0200 schrieb WM:

    You can subtract every natural number from ω without traversing the dark realm. You can add every natural number to every natural number without traversing the dark realm. That is the essence of infinity!

    You'd rather read Peter Suber's "Infinite Reflections".

    Out-dated. But Suber is quoted in https://www.hs-augsburg.de/~mueckenh/Transfinity/Transfinity/pdf.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Moebius on Fri Oct 4 11:49:17 2024
    On 04.10.2024 10:22, Moebius wrote:
    Am 04.10.2024 um 10:17 schrieb joes:
    Am Thu, 03 Oct 2024 20:20:52 +0200 schrieb WM:

    If all fractions are separated real points on the real axis, then there
    must be a first one.

    Nope.

    Hint: The harmonic series is divergent [at least in mathematics].

    Correct but irrelevant.
    The sum of all natural numbers is larger than ω. Nevertheless ω-1 is the
    last natural number.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to joes on Fri Oct 4 11:55:26 2024
    On 04.10.2024 10:52, joes wrote:
    Am Thu, 03 Oct 2024 20:37:47 +0200 schrieb WM:
    On 03.10.2024 01:27, Richard Damon wrote:
    On 10/2/24 8:00 AM, WM wrote:

    Show a counter example leaving less than ℵo smaller unit fractions
    undefined. Fail.
    That isn't a valid request.
    Why? Because you cannot? That shows the dark numbers.
    Or because it is impossible.

    Of course it is impossible. The reason is this: dark numbers cannot be
    chosen individually.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to joes on Fri Oct 4 11:56:44 2024
    On 04.10.2024 11:00, joes wrote:
    Am Thu, 03 Oct 2024 20:34:20 +0200 schrieb WM:
    On 03.10.2024 01:03, Richard Damon wrote:
    On 10/2/24 7:57 AM, WM wrote:

    Of course all gaps between unit fractions are made of more than
    finitely many points. I never denied that.
    But that also means that no point are "next to" each other.
    Therefore NUF can increase at most by 1 at every real point.
    Try to learn the basics and to understand ∀n ∈ ℕ: 1/n - 1/(n+1) > 0. >>> Which means that for all n that are in the Natural numbers, for the
    unit fraction  1/n, theree DOES EXIST another unit fraction 1/(n+1)
    that is smaller than it.
    That is true for all visible and most dark numbers but not for all.
    What is the distance between the last natural and its successor?

    Unknown.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to joes on Fri Oct 4 11:53:50 2024
    On 04.10.2024 10:29, joes wrote:
    Am Thu, 03 Oct 2024 20:25:07 +0200 schrieb WM:
    On 02.10.2024 22:07, Jim Burns wrote:
    On 10/2/2024 7:12 AM, WM wrote:
    On 01.10.2024 22:05, Jim Burns wrote:

    For every nonzero distance d from 0 there are ℵ₀.many unit.fractions >>>>> closer than d
    That means there is no d by what you can distinguish ℵ₀ unit
    fractions?
    You (WM) require us to guess what you mean by 'distinguish'.
    You distinguish two unit fractions 1/n and 1/m if you place a point in
    distance d from 0 between them: 1/n < d < 1/m.
    Which is always possible.

    For a finite collection of unit fractions. For almost all unit fractions
    it is impossible.

    There is no d between ℵ₀.many.smaller.unit.fractions and
    slightly.fewer.than.ℵ₀.many.smaller.unit.fractions.
    That means you cannot distinguish ℵ₀ smaller unit fractions.
    Misconception: there is no „slightly fewer than ℵ₀”.

    Of course there is fewer, namely zero. If slightly fewer is not
    possible, then ℵ₀ unit fractions sit at one point.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to FromTheRafters on Fri Oct 4 12:11:30 2024
    On 04.10.2024 12:02, FromTheRafters wrote:
    on 10/4/2024, WM supposed :

    The sum of all natural numbers is larger than ω.

    Wrong, it doesn't sum in the normal sense because it is not convergent.

    Yes, I cannot calculate the sum, but I know that already ω-1 + 1 = ω.

    You could use the Zeta function for complex numbers and achieve -1/12 as
    a 'sum' in that sense.

    Nonsense.

    Nevertheless ω-1 is the last natural number.

    Because you say so? Explain what minus one means in reference to omega.

    ω-1, the number next to ω, cannot be found because it is dark. But if
    all ordinal numbers are actually existing, then there is no gap between
    ℕ and ω.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Fri Oct 4 06:53:20 2024
    On 10/4/24 5:23 AM, WM wrote:
    On 04.10.2024 00:55, Richard Damon wrote:
    On 10/3/24 2:34 PM, WM wrote:
    On 03.10.2024 01:03, Richard Damon wrote:

    But that also means that no point are "next to" each other.

    Therefore NUF can increase at most by 1 at every real point.

    Why?

    This is the precondition: The unit fractions are all existing! If so,
    then they are different fixed points on the positive real line above
    zero. Hence one is the first after zero.

    Regards, WM


    All you are doing is showing that your conccept of "all existing"
    doesn't support the actual concept of infinity, and thus that you brain
    isjust all exploded from the contradictions caused by applying rules
    that work only on finite sets to infinite sets,

    Sorry, you are nothing but an ignorant liar that has is just too stupid
    to understand your errors.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Fri Oct 4 10:55:31 2024
    Am Fri, 04 Oct 2024 11:56:44 +0200 schrieb WM:
    On 04.10.2024 11:00, joes wrote:
    Am Thu, 03 Oct 2024 20:34:20 +0200 schrieb WM:
    On 03.10.2024 01:03, Richard Damon wrote:
    On 10/2/24 7:57 AM, WM wrote:

    Of course all gaps between unit fractions are made of more than
    finitely many points. I never denied that.
    But that also means that no point are "next to" each other.
    Therefore NUF can increase at most by 1 at every real point.
    Try to learn the basics and to understand ∀n ∈ ℕ: 1/n - 1/(n+1) > 0.
    Which means that for all n that are in the Natural numbers, for the
    unit fraction  1/n, theree DOES EXIST another unit fraction 1/(n+1)
    that is smaller than it.
    That is true for all visible and most dark numbers but not for all.
    What is the distance between the last natural and its successor?
    Unknown.
    Trick question, it has none (or it is infinite).

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Fri Oct 4 11:00:51 2024
    Am Fri, 04 Oct 2024 11:33:02 +0200 schrieb WM:
    On 04.10.2024 10:11, joes wrote:
    Am Thu, 03 Oct 2024 20:31:41 +0200 schrieb WM:
    On 02.10.2024 23:06, Jim Burns wrote:
    On 10/2/2024 7:10 AM, WM wrote:

    You (WM) believe in quantifier shifts,
    the opposite of that.
    I believe that if every n that can be chosen has ℵ₀ successors, then >>> all n that can be chosen have ℵ₀ successors. Proof by your inability >>> to contradict this.
    That is not the same thing, but an invalid deduction.
    It is fact. What you believe valid or invalid is not of interest to me.
    I know that all numbers which you can choose have ℵ₀ successors. Therefore the collection containing all numbers which you can choose has ℵ₀ successors.
    I don’t believe anything. The rules of logic which you are so fond of
    simply do not admit that deduction in general (i.e. it is wrong).
    What do you mean with the successor of a collection anyway?

    1, 2, 3, ..., ω-2, ω-1, ω
    ...is a _finite_ sequence.
    As you have written it,
    ω and each non.0 α < ω has a predecessor,
    which makes ω finite.
    The predecessors in the dark realm cannot be known. You can subtract
    every natural number from ω without traversing the dark realm. You can
    add every natural number to every natural number without traversing
    the dark realm. That is the essence of infinity!
    No, the infinity is at the end, not in the middle.
    A common misbelief about actual infinity based on potential infinity.
    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Fri Oct 4 07:03:55 2024
    On 10/4/24 5:27 AM, WM wrote:
    On 04.10.2024 03:23, Richard Damon wrote:
    On 10/3/24 2:25 PM, WM wrote:

    You distinguish two unit fractions 1/n and 1/m if you place a point
    in distance d from 0 between them: 1/n < d < 1/m.
    That means you cannot distinguish ℵ₀ smaller unit fractions.

    Sure we can, we just can't find any that have less than Aleph_0
    numbers below them since those numbers don't exist.

    They do. 0 has no unit fraction below it. If the next unit fraction has
    unit fractions below it, then it is not the next. It has ℵ₀ smaller unit fractions below it which cannot be distinguished.

    Regards, WM


    But there is not "next" unit fraction above zero, a concept that you
    don't seem to be able to understaend.

    I guess you are just lioke the flat earthers that think there litterally
    could be "four corners" to the sphere of the world.

    Sorry, your brain is just exposed as being totally exploded by the contradictions of your using finite logic on an infinite set that it
    doesn't support.

    Your problem is you can't HAVE the set of Natural Numbers (or rational
    or reals) because your logic can't use them, and you destoryed what was
    left of your logic system by breaking it on a task too big for it,

    Sorry, that is the facts, even if you refuse to believe them. Your
    trying to refute them just shows you to be an ignorant liar.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Fri Oct 4 07:09:17 2024
    On 10/4/24 5:55 AM, WM wrote:
    On 04.10.2024 10:52, joes wrote:
    Am Thu, 03 Oct 2024 20:37:47 +0200 schrieb WM:
    On 03.10.2024 01:27, Richard Damon wrote:
    On 10/2/24 8:00 AM, WM wrote:

    Show a counter example leaving less than ℵo smaller unit fractions >>>>> undefined. Fail.
    That isn't a valid request.
    Why? Because you cannot? That shows the dark numbers.
    Or because it is impossible.

    Of course it is impossible. The reason is this: dark numbers cannot be
    chosen individually.

    Regards, WM


    But therte are no "dark numbers", as it is a concept you use without
    actully having a usable definition.

    The problem is you just assume that finite logic works on infinite sets,
    which it doesn't, causing you to no longer have a logic system at all,
    because you system, as well as your intelect, just blew itself up into smithereens on the contradictions it contains,

    Sorry, you have made yourself into an ignorant liar that doesn't have
    any truth any more.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Fri Oct 4 07:15:50 2024
    On 10/4/24 5:53 AM, WM wrote:
    On 04.10.2024 10:29, joes wrote:
    Am Thu, 03 Oct 2024 20:25:07 +0200 schrieb WM:
    On 02.10.2024 22:07, Jim Burns wrote:
    On 10/2/2024 7:12 AM, WM wrote:
    On 01.10.2024 22:05, Jim Burns wrote:

    For every nonzero distance d from 0 there are ℵ₀.many unit.fractions >>>>>> closer than d
    That means there is no d by what you can distinguish ℵ₀ unit
    fractions?
    You (WM) require us to guess what you mean by 'distinguish'.
    You distinguish two unit fractions 1/n and 1/m if you place a point in
    distance d from 0 between them: 1/n < d < 1/m.
    Which is always possible.

    For a finite collection of unit fractions. For almost all unit fractions
    it is impossible.


    So, you ADMIT that you your concept of the "Natural Numbers" isn't
    actually the full INFINITE set of Natural Numbers but just some
    (possibly indefinite) finite subset of it.

    That you concept of "Infinity" isn't actually infinity, but a poor
    substitute for it.

    Note, the term "Almost all" is defined for infinite sets, and no finte
    subset of an infinite set is "Almost all" of it. Almost All say that
    there is a FINITE set of exceptions, and thus there is a last exception,
    not a last member of the set.


    There is no d between ℵ₀.many.smaller.unit.fractions and
    slightly.fewer.than.ℵ₀.many.smaller.unit.fractions.
    That means you cannot distinguish ℵ₀ smaller unit fractions.
    Misconception: there is no „slightly fewer than ℵ₀”.

    Of course there is fewer, namely zero. If slightly fewer is not
    possible, then ℵ₀ unit fractions sit at one point.

    Nope, Zero is not "slightly fewer" than infinite.

    From any finite point, there ARE Aleph_0 points below it that are unit fractions.


    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Fri Oct 4 15:10:52 2024
    Am Fri, 04 Oct 2024 11:23:13 +0200 schrieb WM:
    On 04.10.2024 00:55, Richard Damon wrote:
    On 10/3/24 2:34 PM, WM wrote:
    On 03.10.2024 01:03, Richard Damon wrote:

    But that also means that no point are "next to" each other.
    Therefore NUF can increase at most by 1 at every real point.
    Why?
    This is the precondition: The unit fractions are all existing! If so,
    then they are different fixed points on the positive real line above
    zero. Hence one is the first after zero.
    What kind of fucked up condition is that? It doesn’t even make sense
    for a UF to not exist.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Fri Oct 4 17:36:40 2024
    Am 04.10.2024 um 17:10 schrieb joes:
    Am Fri, 04 Oct 2024 11:23:13 +0200 schrieb WM:

    This is the precondition: The unit fractions are all existing! If so,
    then they are different fixed points on the positive real line above
    zero. Hence one is the first after zero.

    What kind of fucked up condition is that? It doesn’t even make sense
    for a UF to not exist.

    Sure. But the MAIN PROBLEM is his usage of "hence", which clearly is not correct. Why on earth should there be a "first after zero". <facepalm>

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to FromTheRafters on Fri Oct 4 20:25:35 2024
    On 04.10.2024 12:38, FromTheRafters wrote:
    on 10/4/2024, WM supposed :
    On 04.10.2024 12:02, FromTheRafters wrote:
    on 10/4/2024, WM supposed :

    The sum of all natural numbers is larger than ω.

    Wrong, it doesn't sum in the normal sense because it is not convergent.

    Yes, I cannot calculate the sum, but I know that already ω-1 + 1 = ω.

    Omega minus one is not defined.

    It is defined by ω-1 + 1 = ω.

    The 'plus one' here is not plus the
    natural number one, but only signifies the "next" ordinal.

    You could use the Zeta function for complex numbers and achieve -1/12
    as a 'sum' in that sense.

    Nonsense.

    Your use of the word nonsense simply means that you don't understand something.

    I understand that the sum 1+2+3+... > 1. More is not required.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Fri Oct 4 20:33:12 2024
    On 04.10.2024 13:03, Richard Damon wrote:
    On 10/4/24 5:27 AM, WM wrote:

    Sure we can, we just can't find any that have less than Aleph_0
    numbers below them since those numbers don't exist.

    They do. 0 has no unit fraction below it. If the next unit fraction
    has unit fractions below it, then it is not the next. It has ℵ₀
    smaller unit fractions below it which cannot be distinguished.

    But there is not "next" unit fraction above zero

    Of course there is.

    a concept that you don't seem to be able to understaend.

    Nevertheless it is unavoidable.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Moebius on Fri Oct 4 20:36:25 2024
    On 04.10.2024 17:36, Moebius wrote:
    Am 04.10.2024 um 17:10 schrieb joes:
    Am Fri, 04 Oct 2024 11:23:13 +0200 schrieb WM:

    This is the precondition: The unit fractions are all existing! If so,
    then they are different fixed points on the positive real line above
    zero. Hence one is the first after zero.

    But the MAIN PROBLEM is his usage of "hence", which clearly is not
    correct. Why on earth should there be a "first after zero".

    Points on the real line are real points. One is the first.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to joes on Fri Oct 4 20:34:43 2024
    On 04.10.2024 17:10, joes wrote:
    Am Fri, 04 Oct 2024 11:23:13 +0200 schrieb WM:
    On 04.10.2024 00:55, Richard Damon wrote:
    On 10/3/24 2:34 PM, WM wrote:
    On 03.10.2024 01:03, Richard Damon wrote:

    But that also means that no point are "next to" each other.
    Therefore NUF can increase at most by 1 at every real point.
    Why?
    This is the precondition: The unit fractions are all existing! If so,
    then they are different fixed points on the positive real line above
    zero. Hence one is the first after zero.
    What kind of fucked up condition is that? It doesn’t even make sense
    for a UF to not exist.

    Learn what potential infinity is.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Fri Oct 4 22:09:41 2024
    On 04.10.2024 21:37, Jim Burns wrote:
    On 10/4/2024 5:53 AM, WM wrote:

    If slightly fewer is not possible,
    then ℵ₀ unit fractions sit at one point.

    No.

    Otherwise we could enter the gaps between them.

    Slightly fewer is not possible.

    That proves one point.

    You (WM) think that that's wrong because
    you (WM) think that a quantifier shift is reliable.
    However, a quantifier shift is unreliable.

    It is more reliable than your unfounded twaddle.
    But it is no quantifier shift but simplest logic:
    If ℵ₀ unit fractions do not sit at one point (and are not dark) then
    they can be subdivided into smaller parts.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to joes on Fri Oct 4 22:10:35 2024
    On 04.10.2024 13:00, joes wrote:
    Am Fri, 04 Oct 2024 11:33:02 +0200 schrieb WM:

    I know that all numbers which you can choose have ℵ₀ successors.
    Therefore the collection containing all numbers which you can choose has
    ℵ₀ successors.
    I don’t believe anything. The rules of logic which you are so fond of simply do not admit that deduction in general (i.e. it is wrong).

    It is prove correct by the impossibility to circumvent it: all numbers
    which you can choose have ℵ₀ successors. That is essential, not your "rules".

    What do you mean with the successor of a collection anyway?

    Between every defined element of the collection and ω, there are ℵ₀ undefinable successors.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Fri Oct 4 15:37:37 2024
    On 10/4/2024 5:53 AM, WM wrote:
    On 04.10.2024 10:29, joes wrote:
    Am Thu, 03 Oct 2024 20:25:07 +0200 schrieb WM:
    On 02.10.2024 22:07, Jim Burns wrote:
    On 10/2/2024 7:12 AM, WM wrote:
    On 01.10.2024 22:05, Jim Burns wrote:

    For every nonzero distance d from 0
    there are ℵ₀.many unit.fractions
    closer than d

    That means there is no d by what
    you can distinguish ℵ₀ unit fractions?

    You (WM) require us to guess
    what you mean by 'distinguish'.

    You distinguish two unit fractions 1/n and 1/m
    if you place a point in distance d from 0
    between them: 1/n < d < 1/m.

    Which is always possible.

    For a finite collection of unit fractions.
    For almost all unit fractions it is impossible.

    Yes, because
    0 is the greatest.lower.bound of the set ⅟ℕᵈᵉᶜ of
    decrementable.to unit.fractions
    and you know,
    for your darkᵂᴹ unit.fractions, that
    0 <ᵉᵃᶜʰ ⅟ℕᵂᴹ ᵉᵃᶜʰ<ᵉᵃᶜʰ ⅟ℕᵈᵉᶜ

    If ⅟ℕᵂᴹ ≠ {}
    then glb.⅟ℕᵈᵉᶜ > 0

    However,
    glb.⅟ℕᵈᵉᶜ = 0
    thus
    ⅟ℕᵂᴹ = {}

    Slightly.fewer.than.ℵ₀.many
    requires impossibilities.

    There is no d between
    ℵ₀.many.smaller.unit.fractions and
    slightly.fewer.than.ℵ₀.many.smaller.unit.fractions.

    That means you cannot distinguish
    ℵ₀ smaller unit fractions.

    Misconception:
    there is no „slightly fewer than ℵ₀”.

    If slightly fewer is not possible,
    then ℵ₀ unit fractions sit at one point.

    No.

    Each ⅟j in ⅟ℕᵈᵉᶜ has
    ℵ₀.many in ⅟ℕᵈᵉᶜ ⅟k < ⅟j

    ⎛ Any not.lower.bound γ of ⅟ℕᵈᵉᶜ has
    ⎜ ⅟j < γ and ℵ₀.many in ⅟ℕᵈᵉᶜ ⅟k < ⅟j < γ

    ⎜ Only a lower.bound β of ⅟ℕᵈᵉᶜ can have
    ⎜ fewer.than.ℵ₀.many in ⅟ℕᵈᵉᶜ < β

    ⎜ Only a lower.bound β of ⅟ℕᵈᵉᶜ can have
    ⎜ fewer.than.ℵ₀.many in ⅟ℕᵈᵉᶜ∪⅟ℕᵂᴹ < β
    ⎜ or
    ⎝ slightly.fewer.than.ℵ₀.many in ⅟ℕᵈᵉᶜ∪⅟ℕᵂᴹ < β

    However,
    0 is the greatest.lower.bound of ⅟ℕᵈᵉᶜ and
    0 is one of the lower.bounds of ⅟ℕᵂᴹ

    ⎛ any γ > 0 has at.least.ℵ₀.many < γ
    ⎜ NOT slightly.fewer.than.ℵ₀.many in ⅟ℕᵈᵉᶜ∪⅟ℕᵂᴹ

    ⎜ any β ≤ 0 has 0.many < β
    ⎜ NOT slightly.fewer.than.ℵ₀.many in ⅟ℕᵈᵉᶜ∪⅟ℕᵂᴹ

    ⎜ There is NO point for which there are
    ⎝ slightly.fewer.than.ℵ₀.many in ⅟ℕᵈᵉᶜ∪⅟ℕᵂᴹ

    If slightly fewer is not possible,
    then ℵ₀ unit fractions sit at one point.

    No.
    Slightly fewer is not possible.

    However, ∀ᴿx>0:
    ⎛ uₓ(k) = ⅟⌈k+⅟x⌉
    ⎜ uₓ: ℕ → (0,x]: one.to.one and not.at.one.point
    ⎝ NUF(x) = |uₓ(ℕ)| = |ℕ| = ℵ₀

    You (WM) think that that's wrong because
    you (WM) think that a quantifier shift is reliable.
    However, a quantifier shift is unreliable.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Fri Oct 4 18:45:48 2024
    On 10/4/24 2:36 PM, WM wrote:
    On 04.10.2024 17:36, Moebius wrote:
    Am 04.10.2024 um 17:10 schrieb joes:
    Am Fri, 04 Oct 2024 11:23:13 +0200 schrieb WM:

    This is the precondition: The unit fractions are all existing! If so,
    then they are different fixed points on the positive real line above
    zero. Hence one is the first after zero.

    But the MAIN PROBLEM is his usage of "hence", which clearly is not
    correct. Why on earth should there be a "first after zero".

    Points on the real line are real points. One is the first.

    Regards, WM



    Nope, and that is your problem, that property only hold at both ends for
    finite sets.

    You are claiming a first on an end that is on the infinite end, which
    means there must be a highest finite number, and thus your infinity
    isn't an infinity, proving you are just a stupid liar.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Fri Oct 4 18:46:57 2024
    On 10/4/24 2:34 PM, WM wrote:
    On 04.10.2024 17:10, joes wrote:
    Am Fri, 04 Oct 2024 11:23:13 +0200 schrieb WM:
    On 04.10.2024 00:55, Richard Damon wrote:
    On 10/3/24 2:34 PM, WM wrote:
    On 03.10.2024 01:03, Richard Damon wrote:

    But that also means that no point are "next to" each other.
    Therefore NUF can increase at most by 1 at every real point.
    Why?
    This is the precondition: The unit fractions are all existing! If so,
    then they are different fixed points on the positive real line above
    zero. Hence one is the first after zero.
    What kind of fucked up condition is that? It doesn’t even make sense
    for a UF to not exist.

    Learn what potential infinity is.

    Regards, WM



    WHich is just terms that it seems YOU invented to blow you your mind by
    the contradictions it creates.

    Sorry, you are just proving that you are a stupid idiot.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Fri Oct 4 18:47:53 2024
    On 10/4/24 4:10 PM, WM wrote:
    On 04.10.2024 13:00, joes wrote:
    Am Fri, 04 Oct 2024 11:33:02 +0200 schrieb WM:

    I know that all numbers which you can choose have ℵ₀ successors.
    Therefore the collection containing all numbers which you can choose
    has
    ℵ₀ successors.
    I don’t believe anything. The rules of logic which you are so fond of simply do not admit that deduction in general (i.e. it is wrong).

    It is prove correct by the impossibility to circumvent it: all numbers
    which you can choose have ℵ₀ successors. That is essential, not your "rules".

    What do you mean with the successor of a collection anyway?

    Between every defined element of the collection and ω, there are ℵ₀ undefinable successors.

    Regards, WM

    No, every term is defined, but YOUR logic can't handle them, since it
    only handles finite sets, and thus started off broken.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Fri Oct 4 18:49:28 2024
    On 10/4/24 2:33 PM, WM wrote:
    On 04.10.2024 13:03, Richard Damon wrote:
    On 10/4/24 5:27 AM, WM wrote:

    Sure we can, we just can't find any that have less than Aleph_0
    numbers below them since those numbers don't exist.

    They do. 0 has no unit fraction below it. If the next unit fraction
    has unit fractions below it, then it is not the next. It has ℵ₀
    smaller unit fractions below it which cannot be distinguished.

    But there is not "next" unit fraction above zero

    Of course there is.

    Nope


    a concept that you don't seem to be able to understaend.


    Nope, it is just a fairy tale that has blown up your logic system.

    Nevertheless it is unavoidable.

    No, but your logic system blowing up when you include it is.


    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Fri Oct 4 19:41:43 2024
    On 10/4/2024 4:09 PM, WM wrote:
    On 04.10.2024 21:37, Jim Burns wrote:
    On 10/4/2024 5:53 AM, WM wrote:

    If slightly fewer is not possible,
    then ℵ₀ unit fractions sit at one point.

    No.

    Otherwise
    we could enter the gaps between them.

    You (WM) think that we can't enter gaps because
    you (WM) think that a quantifier shift is reliable.
    However, a quantifier shift is unreliable.

    ∀ᴿx>0:
    ⎛ uₓ(k) = ⅟⌈k+⅟x⌉
    ⎜ uₓ: ℕ → (0,x]: one.to.one and not.at.one.point
    ⎝ NUF(x) = |uₓ(ℕ)| = |ℕ| = ℵ₀

    Slightly fewer is not possible.

    That proves one point.

    ...that ω-1 is not possible.

    You (WM) think that that's wrong because
    you (WM) think that a quantifier shift is reliable.
    However, a quantifier shift is unreliable.

    It is more reliable than your unfounded twaddle.
    But it is no quantifier shift but simplest logic:
    If ℵ₀ unit fractions do not sit at one point
    (and are not dark) then
    they can be subdivided into smaller parts.

    ∀ᴿx>0:
    ⎛ uₓ(k) = ⅟⌈k+⅟x⌉
    ⎜ uₓ: ℕ → (0,x]: one.to.one and not.at.one.point
    ⎝ NUF(x) = |uₓ(ℕ)| = |ℕ| = ℵ₀

    That you (WM) think that you've given an argument
    shows
    that you (WM) think a quantifier shift is reliable.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Sat Oct 5 08:10:59 2024
    Am Fri, 04 Oct 2024 20:25:35 +0200 schrieb WM:
    On 04.10.2024 12:38, FromTheRafters wrote:
    on 10/4/2024, WM supposed :
    On 04.10.2024 12:02, FromTheRafters wrote:
    on 10/4/2024, WM supposed :

    The sum of all natural numbers is larger than ω.
    Wrong, it doesn't sum in the normal sense because it is not
    convergent.
    Yes, I cannot calculate the sum, but I know that already ω-1 + 1 = ω.
    Omega minus one is not defined.
    It is defined by ω-1 + 1 = ω.
    That is clearly an infinite number.

    The 'plus one' here is not plus the
    natural number one, but only signifies the "next" ordinal.

    You could use the Zeta function for complex numbers and achieve -1/12
    as a 'sum' in that sense.
    Nonsense.
    Your use of the word nonsense simply means that you don't understand
    something.
    I understand that the sum 1+2+3+... > 1. More is not required.
    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Sat Oct 5 08:08:47 2024
    Am Fri, 04 Oct 2024 22:09:41 +0200 schrieb WM:
    On 04.10.2024 21:37, Jim Burns wrote:
    On 10/4/2024 5:53 AM, WM wrote:

    If slightly fewer is not possible,
    then ℵ₀ unit fractions sit at one point.
    No.
    Otherwise we could enter the gaps between them.
    We can.

    Slightly fewer is not possible.
    That proves one point.
    You (WM) think that that's wrong because you (WM) think that a
    quantifier shift is reliable.
    However, a quantifier shift is unreliable.
    It is more reliable than your unfounded twaddle.
    Apparently you have no idea what a quantifier shift even is.
    Have you looked at the Wikipedia page?

    But it is no quantifier shift but simplest logic:
    If ℵ₀ unit fractions do not sit at one point (and are not dark) then
    they can be subdivided into smaller parts.
    Which they can.
    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Sat Oct 5 10:46:27 2024
    Am 05.10.2024 um 10:08 schrieb joes:
    Am Fri, 04 Oct 2024 22:09:41 +0200 schrieb WM:
    On 04.10.2024 21:37, Jim Burns wrote:

    You (WM) think that that's wrong because you (WM) think that a
    quantifier shift is reliable. However, a quantifier shift is unreliable.

    It is more reliable than your unfounded twaddle.

    Ah ja. Gut, dass das dumme Arschloch "die Katze mal aus dem Sack
    gelassen hat".

    Nein, Mückenheim: a quantifier shift is NOT reliable und wird daher in
    der Mathematik tunlichst vermieden (und nicht nur dort).

    Apparently you have no idea what a quantifier shift even is.
    Have you looked at the Wikipedia page?

    C'mon, he's the GRÖMAZ. Don't bother him with such trivial things!

    But it is no quantifier shift but simplest logic:

    Translation: Nonsense.

    If ℵ₀ unit fractions [bla]

    Yeah, whatever.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Sat Oct 5 10:38:04 2024
    Am 05.10.2024 um 10:10 schrieb joes:
    Am Fri, 04 Oct 2024 20:25:35 +0200 schrieb WM:
    On 04.10.2024 12:38, FromTheRafters wrote:
    on 10/4/2024, WM supposed :
    On 04.10.2024 12:02, FromTheRafters wrote:
    on 10/4/2024, WM supposed :

    The sum of all natural numbers is larger than ω.

    Unsinn. Heilige Scheiße, Du redest wirklich einen unfassbaren Müll
    zusammen, Mückenheim! Geh doch endlich mal zu Psychiater!

    Wrong, it doesn't sum in the normal sense because it is not
    convergent.
    Yes, I cannot calculate the sum, but I know that already ω-1 + 1 = ω. >>> Omega minus one is not defined.
    It is defined by ω-1 + 1 = ω.
    That is clearly an infinite number.

    That is clearly nonsense.

    Hint: There is no ordinal number o such that o + 1 = ω. Hence there is especially no ordinal number denoted by "ω-1" such that ω-1 + 1 = ω.

    So etwas gibt es nur in Mückenheims Wahnwelt. Und /ω-1/ ist nicht
    unendlich, sonder UNSINN.

    Mückenheim:

    ___________________________________________________________________

    I understand that the sum 1+2+3+... > 1.


    Nein, Mückenheim. Die gewöhnliche Summe von "1 + 2 + 3 + ... " IM
    KONTEXT DER REELLEN ZAHLEN ist NICHT DEFINIERT, also INSBESONDERE KEINE
    REELLE ZAHL (und damit auch keine natürliche Zahl).

    "1 + 2 + 3 + ... > 1"

    ist hier UNSINN. Überraschung! :-)

    Allerdings kann man IR auch etwas erweitern, nämlich um die beiden
    Elemente {-oo, oo} um auf diese Weise die "extended reals" IR* zu erhalten.

    IN DIESEM Kontext kann man nun tatsächlich schreiben:

    "1 + 2 + 3 + ... = oo"

    mit oo > 1 .

    IN DIESEM KONTEXT kann man also

    "1 + 2 + 3 + ... > 1"

    tatsächlich hinschreiben und es ist dann sinnvoll und korrekt. Nur musst
    Du dann mit den "unendlichen Zahlen" -oo und oo leben. Es gilt dann insbesondere für alle r e IR:

    -oo < r < oo .

    Source: https://en.wikipedia.org/wiki/Extended_real_number_line

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to FromTheRafters on Sat Oct 5 11:17:14 2024
    On 05.10.2024 00:37, FromTheRafters wrote:
    After serious thinking Chris M. Thomasson wrote :

    Now WM is trying to say there is a first real number?

    If all real numbers are there, then a first one is unavoidably there.

    ...and it is dark.

    Of course, since we cannot see it, name it, use it as an individual.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Sat Oct 5 11:18:36 2024
    On 05.10.2024 00:45, Richard Damon wrote:
    On 10/4/24 2:36 PM, WM wrote:

    Points on the real line are real points. One is the first.

    Nope, and that is your problem, that property only hold at both ends for finite sets.

    Every point is a finite set.

    Regards, WM

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  • From WM@21:1/5 to FromTheRafters on Sat Oct 5 11:14:55 2024
    On 04.10.2024 22:47, FromTheRafters wrote:
    WM formulated the question :

    Points on the real line are real points. One is the first.

    Sounds intuitive

    It is fact.

    , but for each first there is a firster.

    When looking from the right-hand side it seems so. Therefore an axiom
    has been stated which however is invalid.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Sat Oct 5 11:20:15 2024
    On 05.10.2024 00:46, Richard Damon wrote:
    On 10/4/24 2:34 PM, WM wrote:

    Learn what potential infinity is.

    WHich is just terms that it seems YOU invented

    Hahaha. Read Aristotle!

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Sat Oct 5 11:23:27 2024
    On 05.10.2024 00:47, Richard Damon wrote:
    On 10/4/24 4:10 PM, WM wrote:

    Between every defined element of the collection and ω, there are ℵ₀
    undefinable successors.

    No, every term is defined,

    Find the largest natural number. It is a finite set, a so-called so
    singleton.

    Regards, WM

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  • From WM@21:1/5 to Jim Burns on Sat Oct 5 11:29:29 2024
    On 05.10.2024 01:41, Jim Burns wrote:
    On 10/4/2024 4:09 PM, WM wrote:

    Otherwise
    we could enter the gaps between them.

    You (WM) think that we can't enter gaps because

    they are dark.
    you (WM) think that a quantifier shift is reliable.
    However, a quantifier shift is unreliable.

    Don't parrot that nonsense. There is no quantifier shift. Between many
    unit fractions there are many gaps. But we cannot find them.

    If ℵ₀ unit fractions do not sit at one point
    (and are not dark) then they can be subdivided into smaller parts.

    ∀ᴿx>0:
    ⎛ uₓ(k) = ⅟⌈k+⅟x⌉
    ⎜ uₓ: ℕ → (0,x]: one.to.one and not.at.one.point
    ⎝ NUF(x) = |uₓ(ℕ)| = |ℕ| = ℵ₀

    What shall that prove? Between n unit fractions there are n-1 gaps. Each
    gap can be found for definable unit fractions.

    Note also that every pair of unit fractions is a finite set.

    Regards, WM

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  • From WM@21:1/5 to Moebius on Sat Oct 5 11:43:50 2024
    On 05.10.2024 10:46, Moebius wrote:

    a quantifier shift is NOT reliable und wird daher in
    der Mathematik tunlichst vermieden (und nicht nur dort).

    I many cases it is correct. For instance if every definable natural
    number has ℵo natural successors, then there are ℵo natural numbers
    larger than all definable natural numbers. They are dark however and
    cannot be specified.

    Regards, WM

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  • From WM@21:1/5 to joes on Sat Oct 5 11:32:44 2024
    On 05.10.2024 10:08, joes wrote:
    Am Fri, 04 Oct 2024 22:09:41 +0200 schrieb WM:
    But it is no quantifier shift but simplest logic:
    If ℵ₀ unit fractions do not sit at one point (and are not dark) then
    they can be subdivided into smaller parts.
    Which they can.

    Do it. Fail because slightly fewer is not possible.

    Regards, WM

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  • From WM@21:1/5 to Moebius on Sat Oct 5 11:39:15 2024
    On 05.10.2024 10:38, Moebius wrote:
    Am 05.10.2024 um 10:10 schrieb joes:
    Am Fri, 04 Oct 2024 20:25:35 +0200 schrieb WM:

    Hint: There is no ordinal number o such that o + 1 = ω. Hence there is especially no ordinal number denoted by "ω-1" such that ω-1 + 1 = ω.

    May be. But in actual infinity there is no gap before ω.


    I understand that the sum 1+2+3+... > 1.

    Die gewöhnliche Summe von "1 + 2 + 3 + ... " IM
    KONTEXT DER REELLEN ZAHLEN ist NICHT DEFINIERT,

    Jedenfalls ist sie nicht negativ.

    Allerdings kann man IR auch etwas erweitern, nämlich um die beiden
    Elemente {-oo, oo} um auf diese Weise die "extended reals" IR* zu erhalten.

    IN DIESEM Kontext kann man nun tatsächlich schreiben:

             "1 + 2 +  3 + ... = oo"

    mit oo > 1 .

    In actual infinity ω-2 is a natural number and 3 + ω-2 = ω+1.


    IN DIESEM KONTEXT kann man also

             "1 + 2 +  3 + ... > 1"

    tatsächlich hinschreiben und es ist dann sinnvoll und korrekt.

    Na also.

    Gruß, WM

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  • From Richard Damon@21:1/5 to All on Sat Oct 5 07:08:06 2024
    On 10/5/24 5:20 AM, WM wrote:
    On 05.10.2024 00:46, Richard Damon wrote:
    On 10/4/24 2:34 PM, WM wrote:

    Learn what potential infinity is.

    WHich is just terms that it seems YOU invented

    Hahaha. Read Aristotle!

    Regards, WM

    Maybe you should, since you don't understand his concepts, and made up
    your own to match the terms.

    Remember, Aristotle said Actual Infinities cannot exist.

    So, looking at there properties is futile.

    That is your ignorance.

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Sat Oct 5 07:01:48 2024
    On 10/5/24 5:18 AM, WM wrote:
    On 05.10.2024 00:45, Richard Damon wrote:
    On 10/4/24 2:36 PM, WM wrote:

    Points on the real line are real points. One is the first.

    Nope, and that is your problem, that property only hold at both ends
    for finite sets.

    Every point is a finite set.

    Regards, WM

    And the set of *A* point has no "next" point, as it is just one.

    In the infinite set of points, there is no "next" set to take from
    (since the reals, like the rationals are dense).

    Sorry, you are just showing your utter stupidity and that your brians justification center has broken you as it tries to justify the errors
    created by your blown to smithereen logic system.

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Sat Oct 5 07:11:51 2024
    On 10/5/24 5:32 AM, WM wrote:
    On 05.10.2024 10:08, joes wrote:
    Am Fri, 04 Oct 2024 22:09:41 +0200 schrieb WM:
    But it is no quantifier shift but simplest logic:
    If ℵ₀ unit fractions do not sit at one point (and are not dark) then >>> they can be subdivided into smaller parts.
    Which they can.

    Do it. Fail because slightly fewer is not possible.

    Regards, WM




    Yea, "Slightly fewer" than infinity is not a valid concept.

    You don't seem to understand that no matter what finite quantity your
    remove from an infinite set, you still have an infinite set.

    You need to remove an infinite number of points from the infinite set to
    get to a finite set.

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Sat Oct 5 07:09:34 2024
    On 10/5/24 5:23 AM, WM wrote:
    On 05.10.2024 00:47, Richard Damon wrote:
    On 10/4/24 4:10 PM, WM wrote:

    Between every defined element of the collection and ω, there are ℵ₀ >>> undefinable successors.

    No, every term is defined,

    Find the largest natural number. It is a finite set, a so-called so singleton.

    Regards, WM


    The set of Natural Numbers is not a "finite set"

    There is no "largest natural number" BY DEFINITION.

    You seem to be confusing the set with its members.

    That is a proven error.

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Sat Oct 5 07:12:41 2024
    On 10/5/24 5:39 AM, WM wrote:
    On 05.10.2024 10:38, Moebius wrote:
    Am 05.10.2024 um 10:10 schrieb joes:
    Am Fri, 04 Oct 2024 20:25:35 +0200 schrieb WM:

    Hint: There is no ordinal number o such that o + 1 = ω. Hence there is
    especially no ordinal number denoted by "ω-1" such that ω-1 + 1 = ω.

    May be. But in actual infinity there is no gap before ω.


    I understand that the sum 1+2+3+... > 1.

    Die gewöhnliche Summe von "1 + 2 + 3 + ... " IM KONTEXT DER REELLEN
    ZAHLEN ist NICHT DEFINIERT,

    Jedenfalls ist sie nicht negativ.

    Allerdings kann man IR auch etwas erweitern, nämlich um die beiden
    Elemente {-oo, oo} um auf diese Weise die "extended reals" IR* zu
    erhalten.

    IN DIESEM Kontext kann man nun tatsächlich schreiben:

              "1 + 2 +  3 + ... = oo"

    mit oo > 1 .

    In actual infinity ω-2 is a natural number and 3 + ω-2 = ω+1.


    IN DIESEM KONTEXT kann man also

              "1 + 2 +  3 + ... > 1"

    tatsächlich hinschreiben und es ist dann sinnvoll und korrekt.

    Na also.

    Gruß, WM

    But actual infinity doesn't exist.

    So, you are talking in an exploded to smithereen world.

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  • From Richard Damon@21:1/5 to All on Sat Oct 5 07:14:16 2024
    On 10/5/24 5:43 AM, WM wrote:
    On 05.10.2024 10:46, Moebius wrote:

    a quantifier shift is NOT reliable und wird daher in der Mathematik
    tunlichst vermieden (und nicht nur dort).

    I many cases it is correct. For instance if every definable natural
    number has ℵo natural successors, then there are ℵo natural numbers larger than all definable natural numbers. They are dark however and
    cannot be specified.

    Regards, WM


    But they are not dark, but can be specified.

    Just because they were bigger than one arbitrary number you chose,
    doesn't mean you can't choose one bigger.

    The problem is there is not a biggest number you can choose, like you
    want to assume, and that blows up your logic to smithereens.

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Richard Damon on Sat Oct 5 14:18:28 2024
    On 05.10.2024 13:12, Richard Damon wrote:


    But actual infinity doesn't exist.

    How can bijections between infinite sets exist then.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Richard Damon on Sat Oct 5 14:15:49 2024
    On 05.10.2024 13:01, Richard Damon wrote:
    On 10/5/24 5:18 AM, WM wrote:
    On 05.10.2024 00:45, Richard Damon wrote:

    Nope, and that is your problem, that property only hold at both ends
    for finite sets.

    Every point is a finite set.

    And the set of *A* point has no "next" point, as it is just one.

    But it has a position, like the point 1/3 - if it is not dark.
    By the way: Also a pair of points is a finite set. And it has a gap and
    every member has a next point.

    Regards, WM

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  • From Alan Mackenzie@21:1/5 to Richard Damon on Sat Oct 5 12:58:34 2024
    Richard Damon <richard@damon-family.org> wrote:

    [ .... ]

    But actual infinity doesn't exist.

    What does it mean for a mathematical concept not to exist?

    You seem to be falling into the same trap as John Gabriel used to when he
    was still posting here. He asserted things like "irrational numbers
    don't exist" and "negative numbers don't exist". He was never able to
    state exactly what he meant by this non-existence.

    [ .... ]

    --
    Alan Mackenzie (Nuremberg, Germany).

    --- SoupGate-Win32 v1.05
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  • From Alan Mackenzie@21:1/5 to Richard Damon on Sat Oct 5 12:48:27 2024
    Richard Damon <richard@damon-family.org> wrote:
    On 10/5/24 5:20 AM, WM wrote:
    On 05.10.2024 00:46, Richard Damon wrote:
    On 10/4/24 2:34 PM, WM wrote:

    Learn what potential infinity is.

    WHich is just terms that it seems YOU invented

    Hahaha. Read Aristotle!

    Regards, WM

    Maybe you should, since you don't understand his concepts, and made up
    your own to match the terms.

    Remember, Aristotle said Actual Infinities cannot exist.

    Aristotle would not have had any concept of "exist" adequate for notions
    of modern mathematics such as "infinity".

    So, looking at there properties is futile.

    As is debate over the ancients' understanding of existence. At least
    here in sci.math it's surely off topic.

    That is your ignorance.

    It's just Wolfgang Mückenheim trying (and succeeding) to throw you off
    the rational track.

    --
    Alan Mackenzie (Nuremberg, Germany).

    --- SoupGate-Win32 v1.05
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  • From joes@21:1/5 to All on Sat Oct 5 13:06:04 2024
    Am Sat, 05 Oct 2024 11:29:29 +0200 schrieb WM:
    On 05.10.2024 01:41, Jim Burns wrote:
    On 10/4/2024 4:09 PM, WM wrote:

    Otherwise we could enter the gaps between them.
    You (WM) think that we can't enter gaps because
    they are dark.
    you (WM) think that a quantifier shift is reliable.
    However, a quantifier shift is unreliable.
    Don't parrot that nonsense. There is no quantifier shift. Between many
    unit fractions there are many gaps. But we cannot find them.
    You constantly make that incorrect deduction. At one point you seemed
    to be recognise that Ax Ey P(x,y) is different from Ey Ax P(x,y).

    If ℵ₀ unit fractions do not sit at one point (and are not dark) then >>> they can be subdivided into smaller parts.
    ∀ᴿx>0:
    ⎛ uₓ(k) = ⅟⌈k+⅟x⌉
    ⎜ uₓ: ℕ → (0,x]: one.to.one and not.at.one.point ⎝ NUF(x) = |uₓ(ℕ)| =
    |ℕ| = ℵ₀
    What shall that prove? Between n unit fractions there are n-1 gaps. Each
    gap can be found for definable unit fractions.
    Note also that every pair of unit fractions is a finite set.
    What about the gap between the last definable and the first dark UF?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
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  • From joes@21:1/5 to All on Sat Oct 5 13:02:20 2024
    Am Sat, 05 Oct 2024 11:32:44 +0200 schrieb WM:
    On 05.10.2024 10:08, joes wrote:
    Am Fri, 04 Oct 2024 22:09:41 +0200 schrieb WM:
    But it is no quantifier shift but simplest logic:
    If ℵ₀ unit fractions do not sit at one point (and are not dark) then >>> they can be subdivided into smaller parts.
    Which they can.
    Do it. Fail because slightly fewer is not possible.
    What do you mean? All the unit fractions have, as you say,
    finite distances, which means there are numbers inbetween.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Sat Oct 5 09:28:42 2024
    On 10/5/24 8:15 AM, WM wrote:
    On 05.10.2024 13:01, Richard Damon wrote:
    On 10/5/24 5:18 AM, WM wrote:
    On 05.10.2024 00:45, Richard Damon wrote:

    Nope, and that is your problem, that property only hold at both ends
    for finite sets.

    Every point is a finite set.

    And the set of *A* point has no "next" point, as it is just one.

    But it has a position, like the point 1/3 - if it is not dark.
    By the way: Also a pair of points is a finite set. And it has a gap and
    every member has a next point.

    Regards, WM

    So why does that say it has a point next to it?

    You just don't understand how logic works, because you don't seem to
    actually beleive in logic, just presumptions because you are to ignorant
    to understand real logic.

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Sat Oct 5 09:32:13 2024
    On 10/5/24 8:18 AM, WM wrote:
    On 05.10.2024 13:12, Richard Damon wrote:


    But actual infinity doesn't exist.

    How can bijections between infinite sets exist then.

    Regards, WM


    Because the sets exist as what you think of as "potential" infinity,
    which are actaully existing sets, we just don't need to generate the
    full set before we use them (since that is the impossible step).

    Infinte bijections take an infinite number of steps to complete
    directly, but can be seen correct by induction.

    Your problem is a failed understanding of what it means to "exist"

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to Alan Mackenzie on Sat Oct 5 09:35:29 2024
    On 10/5/24 8:58 AM, Alan Mackenzie wrote:
    Richard Damon <richard@damon-family.org> wrote:

    [ .... ]

    But actual infinity doesn't exist.

    What does it mean for a mathematical concept not to exist?

    That it doesn't create a usable (non-contradictory) logical system.


    You seem to be falling into the same trap as John Gabriel used to when he
    was still posting here. He asserted things like "irrational numbers
    don't exist" and "negative numbers don't exist". He was never able to
    state exactly what he meant by this non-existence.

    [ .... ]


    --- SoupGate-Win32 v1.05
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  • From Alan Mackenzie@21:1/5 to Richard Damon on Sat Oct 5 13:57:30 2024
    Richard Damon <richard@damon-family.org> wrote:
    On 10/5/24 8:58 AM, Alan Mackenzie wrote:
    Richard Damon <richard@damon-family.org> wrote:

    [ .... ]

    But actual infinity doesn't exist.

    What does it mean for a mathematical concept not to exist?

    That it doesn't create a usable (non-contradictory) logical system.

    Yes! At least, sort of. My understanding of "doesn't exist" is either
    the concept is not (yet?) developed mathematically, or it leads to contradictions. WM's "dark numbers" certainly fall into the first
    category, and possibly the second, too.

    I first came across the terms "potential infinity" and "actual infinity"
    on this newsgroup, not in my degree course a few decades ago. I'm not convinced there is any mathematically valid distinction between them. If
    there were, I would have heard of it back then.

    Does "actual infinity" create a logical system? If so, what is unusable
    or contradictory about that system?

    [ .... ]

    --
    Alan Mackenzie (Nuremberg, Germany).

    --- SoupGate-Win32 v1.05
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  • From Moebius@21:1/5 to All on Sat Oct 5 16:57:32 2024
    Am 05.10.2024 um 15:57 schrieb Alan Mackenzie:

    I first came across the terms "potential infinity" and "actual infinity"
    on this newsgroup, not in my degree course a few decades ago. I'm not convinced there is any mathematically valid distinction between them.

    Actually, there is.

    But in classical mathematics "infinity" means "actual infinity", and
    "potential infinity" is of no no significance her.

    "Cantor's work was well received by some of the prominent
    mathematicians of his day, such as Richard Dedekind. But his
    willingness to regard infinite sets as objects to be treated in
    much the same way as finite sets was bitterly attacked by others,
    particularly Kronecker. There was no objection to a 'potential
    infinity' in the form of an unending process, but an 'actual
    infinity' in the form of a completed infinite set was harder to
    accept."

    (Herb Enderton, Elements of Set Theory)

    If there were, I would have heard of it back then.

    Right.

    Does "actual infinity" create a logical system?

    classical mathematics = ZFC (or something like that) + classical logic.

    --- SoupGate-Win32 v1.05
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  • From Moebius@21:1/5 to All on Sat Oct 5 17:02:10 2024
    Am 05.10.2024 um 15:02 schrieb joes:
    Am Sat, 05 Oct 2024 11:32:44 +0200 schrieb WM: [nosnense]

    What do you mean?

    He does not /mean/ anything.

    Falls Du es noch nicht bemerkt haben solltest: WM ist nicht ganz dicht
    in der Birne (=mad).

    --- SoupGate-Win32 v1.05
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  • From Moebius@21:1/5 to All on Sat Oct 5 16:55:43 2024
    Am 05.10.2024 um 15:57 schrieb Alan Mackenzie:

    I first came across the terms "potential infinity" and "actual infinity"
    on this newsgroup, not in my degree course a few decades ago. I'm not convinced there is any mathematically valid distinction between them.

    Actually, there is.

    But in classical mathematics "infinity" means "actual infinity", and
    "potential infinity" is of no no significance her.

    "Cantor's work was well received by some of the prominent
    mathematicians of his day, such as Richard Dedekind. But his
    willingness to regard infinite sets as objects to be treated in
    much the same way as finite sets was bitterly attacked by others,
    particularly Kronecker. There was no objection to a 'potential
    infinity' in the form of an unending process, but an 'actual
    infinity' in the form of a completed infinite set was harder to
    accept."

    (Herb Enderton, Elements of Set Theory)


    There was no objection to a 'potential infinity' in the form of an
    unending process, but an 'actual infinity' in the form of a completed
    infinite set was harder to accept." [H.B. Enderton: "Elements of set
    theory", Academic Press, New York (1977) p. 14f]

    If there were, I would have heard of it back then.

    Right.

    Does "actual infinity" create a logical system?

    classical mathematics = ZFC (or something like that) + classical logic.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Sat Oct 5 16:58:10 2024
    Am 05.10.2024 um 15:57 schrieb Alan Mackenzie:

    I first came across the terms "potential infinity" and "actual infinity"
    on this newsgroup, not in my degree course a few decades ago. I'm not convinced there is any mathematically valid distinction between them.

    Actually, there is.

    But in classical mathematics "infinity" means "actual infinity", and
    "potential infinity" is of no significance her.

    "Cantor's work was well received by some of the prominent
    mathematicians of his day, such as Richard Dedekind. But his
    willingness to regard infinite sets as objects to be treated in
    much the same way as finite sets was bitterly attacked by others,
    particularly Kronecker. There was no objection to a 'potential
    infinity' in the form of an unending process, but an 'actual
    infinity' in the form of a completed infinite set was harder to
    accept."

    (Herb Enderton, Elements of Set Theory)

    If there were, I would have heard of it back then.

    Right.

    Does "actual infinity" create a logical system?

    classical mathematics = ZFC (or something like that) + classical logic.

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  • From Moebius@21:1/5 to All on Sat Oct 5 17:03:14 2024
    Am 05.10.2024 um 17:02 schrieb Moebius:
    Am 05.10.2024 um 15:02 schrieb joes:
    Am Sat, 05 Oct 2024 11:32:44 +0200 schrieb WM: [nosnense]

    What do you mean?

    He does not /mean/ anything.

    Falls Du es noch nicht bemerkt haben solltest: WM ist nicht ganz dicht
    in der Birne (=mad).

    He's just talking NONSENSE.

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  • From Alan Mackenzie@21:1/5 to Moebius on Sat Oct 5 16:05:52 2024
    Moebius <invalid@example.invalid> wrote:
    Am 05.10.2024 um 15:57 schrieb Alan Mackenzie:

    I first came across the terms "potential infinity" and "actual infinity"
    on this newsgroup, not in my degree course a few decades ago. I'm not
    convinced there is any mathematically valid distinction between them.

    Actually, there is.

    But in classical mathematics "infinity" means "actual infinity", and "potential infinity" is of no significance here.

    "Cantor's work was well received by some of the prominent
    mathematicians of his day, such as Richard Dedekind. But his
    willingness to regard infinite sets as objects to be treated in
    much the same way as finite sets was bitterly attacked by others, particularly Kronecker. There was no objection to a 'potential
    infinity' in the form of an unending process, but an 'actual
    infinity' in the form of a completed infinite set was harder to
    accept."

    (Herb Enderton, Elements of Set Theory)


    There was no objection to a 'potential infinity' in the form of an
    unending process, but an 'actual infinity' in the form of a completed infinite set was harder to accept." [H.B. Enderton: "Elements of set
    theory", Academic Press, New York (1977) p. 14f]

    So the notion of "potential infinity" is a historical artifact due to
    things being unclear at the time these ideas were being worked out.
    Also there is no need for either of the prefixes "potential" or "actual"
    to qualify "infinity" in modern mathematics.

    Though, if I remember correctly, "infinity" was not much used in my
    degree course, except in expressions such as "tends to infinity", but "infinite" was used all the time.

    If there were, I would have heard of it back then.

    Right.

    Does "actual infinity" create a logical system?

    classical mathematics = ZFC (or something like that) + classical logic.

    So why is Richard writing that "actual infinity" doesn't exist?

    --
    Alan Mackenzie (Nuremberg, Germany).

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  • From Moebius@21:1/5 to All on Sat Oct 5 18:54:00 2024
    Am 05.10.2024 um 18:05 schrieb Alan Mackenzie:

    So why is Richard writing that "actual infinity" doesn't exist?

    Don't ask. Maybe it helps to note that he isn't a mathematician. :-P

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  • From Alan Mackenzie@21:1/5 to Moebius on Sat Oct 5 17:08:50 2024
    Moebius <invalid@example.invalid> wrote:
    Am 05.10.2024 um 18:05 schrieb Alan Mackenzie:

    So why is Richard writing that "actual infinity" doesn't exist?

    Don't ask. Maybe it helps to note that he isn't a mathematician. :-P

    But certainly he's more of a mathematician than Wolfgang Mückenheim.

    --
    Alan Mackenzie (Nuremberg, Germany).

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  • From Moebius@21:1/5 to All on Sat Oct 5 19:09:44 2024
    Am 05.10.2024 um 19:08 schrieb Alan Mackenzie:
    Moebius <invalid@example.invalid> wrote:
    Am 05.10.2024 um 18:05 schrieb Alan Mackenzie:

    So why is Richard writing that "actual infinity" doesn't exist?

    Don't ask. Maybe it helps to note that he isn't a mathematician. :-P

    But certainly he's more of a mathematician than Wolfgang Mückenheim.

    Ha ha ha, good one. :-P

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  • From Moebius@21:1/5 to All on Sat Oct 5 19:13:22 2024
    Am 05.10.2024 um 18:05 schrieb Alan Mackenzie:

    So why is Richard writing that "actual infinity" doesn't exist?

    He certainly shouldn't claim that.

    See: https://math.vanderbilt.edu/schectex/courses/thereals/potential.html

    You know, Schechter is not a nobody. :-P

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  • From Moebius@21:1/5 to All on Sat Oct 5 19:17:39 2024
    Am 05.10.2024 um 16:58 schrieb Moebius:
    Am 05.10.2024 um 15:57 schrieb Alan Mackenzie:

    I first came across the terms "potential infinity" and "actual infinity"
    on this newsgroup, not in my degree course a few decades ago.  I'm not
    convinced there is any mathematically valid distinction between them.

    Actually, there is.

    But in classical mathematics "infinity" means "actual infinity", and "potential infinity" is of no significance her.

    "Cantor's work was well received by some of the prominent
    mathematicians of his day, such as Richard Dedekind. But his
    willingness to regard infinite sets as objects to be treated in
    much the same way as finite sets was bitterly attacked by others, particularly Kronecker. There was no objection to a 'potential
    infinity' in the form of an unending process, but an 'actual
    infinity' in the form of a completed infinite set was harder to
    accept."

    (Herb Enderton, Elements of Set Theory)

    If there were, I would have heard of it back then.

    Right.

    "Nearly all research-level mathematicians today (I would guess 99.99% of
    them) take for granted both "potential" and "completed" [aka "actual"] infinity, and most probably do not even know the distinction indicated
    by those two terms."

    Source: https://math.vanderbilt.edu/schectex/courses/thereals/potential.html

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  • From Moebius@21:1/5 to All on Sat Oct 5 19:18:57 2024
    Am 05.10.2024 um 16:58 schrieb Moebius:
    Am 05.10.2024 um 15:57 schrieb Alan Mackenzie:

    I first came across the terms "potential infinity" and "actual infinity"
    on this newsgroup, not in my degree course a few decades ago.  I'm not
    convinced there is any mathematically valid distinction between them.

    Actually, there is.

    "Nearly all research-level mathematicians today (I would guess 99.99% of
    them) take for granted both "potential" and "completed" [aka "actual"] infinity, and most probably do not even know the distinction indicated
    by those two terms."

    Source: https://math.vanderbilt.edu/schectex/courses/thereals/potential.html

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  • From Jim Burns@21:1/5 to All on Sat Oct 5 14:12:33 2024
    On 10/5/2024 5:43 AM, WM wrote:
    On 05.10.2024 10:46, Moebius wrote:

    a quantifier shift is NOT reliable
    und wird daher in der Mathematik
    tunlichst vermieden (und nicht nur dort).

    ⎛ a quantifier shift is NOT reliable
    ⎜ and is therefore avoided in mathematics
    ⎝ (and not only there).

    [In] many cases it is correct.

    "Many cases" is insufficient when
    the argument requires "all cases".

    Finite beings can learn _some facts_ true of
    each one of infinitely.many.
    The technique developed uses
    finitely.many finite.length claims which are
    true in all cases of concern
    (and silent in cases not.of.concern).

    It isn't _known_ which
    individual an all.cases claim refers to.
    It probably could be said that asking which
    is a question for which no answer exists.
    Nonetheless,
    it _is_ known that such a claim must be true.
    There exists no reading in which it is false.

    For a claim true in no more than _many_ cases,
    the all.cases.claims technique doesn't work.

    If someone has a technique using many.cases.claims,
    they should explain _why_ their technique works.
    This has already been done,
    by literally centuries of work,
    for the all.cases.claims technique.

    For instance
    if every definable natural number has
    ℵo natural successors,
    then there are ℵo natural numbers larger than
    all definable natural numbers.

    All.cases.claims:
    ⎛ A set of (definable) natural numbers has
    ⎜ a minimum or is empty

    ⎜ A (definable) natural number has
    ⎜ predecessor.natural or is 0

    ⎜ A (definable) natural number has
    ⎜ a successor.natural.

    ⎜ You: definable natural number
    ⎝ We: natural number

    In all cases _of concern_ those are true claims.
    There are other cases, in some of which they're false,
    but we aren't concerned with those here and now.
    When we are concerned, we'll make different claims.

    if every definable natural number has
    ℵo natural successors,
    then there are ℵo natural numbers larger than
    all definable natural numbers.

    Each (definable) natural number has
    ℵ₀.many (definable) natural numbers after (>) it.

    There are 0.many (definable) natural numbers which
    bounds (≥) all (definable) natural numbers.

    Of many cases in which quantifier shift is correct,
    here and now is NOT one of them.

    Because quantifier shift is sometimes wrong,
    quantifier shift is never used.
    It is reliability which gives finite beings
    the ability to know about infinity.

    They are dark however and cannot be specified.

    Either they are
    well.ordered, successored and (≠0)predecessored.
    or they are
    not of concern here and now.

    That is how finite beings explore infinity.

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  • From WM@21:1/5 to joes on Sat Oct 5 20:56:48 2024
    On 05.10.2024 15:06, joes wrote:

    What about the gap between the last definable and the first dark UF?

    There is no last element in potential infinity - although it is finite.

    Regards, WM


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  • From Moebius@21:1/5 to All on Sat Oct 5 20:57:24 2024
    Am 05.10.2024 um 19:18 schrieb Moebius:
    Am 05.10.2024 um 16:58 schrieb Moebius:
    Am 05.10.2024 um 15:57 schrieb Alan Mackenzie:

    I first came across the terms "potential infinity" and "actual infinity" >>> on this newsgroup, not in my degree course a few decades ago.  I'm not
    convinced there is any mathematically valid distinction between them.

    Actually, there is.

    "Nearly all research-level mathematicians today (I would guess 99.99% of them) take for granted both "potential" and "completed"  [aka "actual"] infinity, and most probably do not even know the distinction indicated
    by those two terms."

    Source: https://math.vanderbilt.edu/schectex/courses/thereals/
    potential.html

    Also quite interesting:

    https://math.vanderbilt.edu/schectex/papers/difficult.html

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  • From WM@21:1/5 to joes on Sat Oct 5 20:54:21 2024
    On 05.10.2024 15:02, joes wrote:
    Am Sat, 05 Oct 2024 11:32:44 +0200 schrieb WM:
    On 05.10.2024 10:08, joes wrote:
    Am Fri, 04 Oct 2024 22:09:41 +0200 schrieb WM:
    But it is no quantifier shift but simplest logic:
    If ℵ₀ unit fractions do not sit at one point (and are not dark) then >>>> they can be subdivided into smaller parts.
    Which they can.
    Do it. Fail because slightly fewer is not possible.
    What do you mean? All the unit fractions have, as you say,
    finite distances, which means there are numbers inbetween.
    But these numbers and these unit fractions cannot be found. It is
    impossible to define a unit fraction having less than ℵo smaller unit fractions. It is impossible to define a unit fraction being closer to
    zero although it is obvious that there are points closer to zero than ℵo*2^ℵo points.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Sat Oct 5 20:58:59 2024
    On 05.10.2024 15:28, Richard Damon wrote:
    On 10/5/24 8:15 AM, WM wrote:
    On 05.10.2024 13:01, Richard Damon wrote:
    On 10/5/24 5:18 AM, WM wrote:
    On 05.10.2024 00:45, Richard Damon wrote:

    Nope, and that is your problem, that property only hold at both
    ends for finite sets.

    Every point is a finite set.

    And the set of *A* point has no "next" point, as it is just one.

    But it has a position, like the point 1/3 - if it is not dark.
    By the way: Also a pair of points is a finite set. And it has a gap
    and every member has a next point.

    So why does that say it has a point next to it?

    A point between both could be chosen unless it was dark.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Sat Oct 5 21:04:14 2024
    On 05.10.2024 15:32, Richard Damon wrote:
    On 10/5/24 8:18 AM, WM wrote:
    On 05.10.2024 13:12, Richard Damon wrote:


    But actual infinity doesn't exist.

    How can bijections between infinite sets exist then.

    Because the sets exist as what you think of as "potential" infinity,

    "the integers separately as well as in their actually infinite totality
    exist as eternal ideas in intellectu Divino in the highest degree of
    reality." [G. Cantor, letter to C. Hermite (30 Nov 1895)]

    we just don't need to generate the
    full set before we use them (since that is the impossible step).

    Is it impossible for the intellectu Divino too? Then Cantor has erred
    and you have discovered his error.

    Regards, WM

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  • From Moebius@21:1/5 to All on Sat Oct 5 21:02:45 2024
    Am 05.10.2024 um 19:18 schrieb Moebius:
    Am 05.10.2024 um 16:58 schrieb Moebius:
    Am 05.10.2024 um 15:57 schrieb Alan Mackenzie:

    I first came across the terms "potential infinity" and "actual infinity" >>> on this newsgroup, not in my degree course a few decades ago.  I'm not
    convinced there is any mathematically valid distinction between them.

    Actually, there is.

    "Nearly all research-level mathematicians today (I would guess 99.99% of them) take for granted both "potential" and "completed"  [aka "actual"] infinity, and most probably do not even know the distinction indicated
    by those two terms."

    Source: https://math.vanderbilt.edu/schectex/courses/thereals/potential.html

    Also quite interesting:

    https://math.vanderbilt.edu/schectex/papers/difficult.html

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  • From WM@21:1/5 to Jim Burns on Sat Oct 5 21:33:21 2024
    On 05.10.2024 20:12, Jim Burns wrote:
    On 10/5/2024 5:43 AM, WM wrote:

    [In] many cases it is correct.

    "Many cases" is insufficient when
    the argument requires "all cases".

    My argument requires only one case, best demonstrated with endsegments
    E(n). The intersection of all *infinite* endsegments is infinite,
    because they all contain the same natural numbers which have not yet
    been eliminated by the process E(n+1) = E(n) \ {n}.

    Regards, WM

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  • From WM@21:1/5 to Alan Mackenzie on Sat Oct 5 21:15:43 2024
    On 05.10.2024 15:57, Alan Mackenzie wrote:

    Yes! At least, sort of. My understanding of "doesn't exist" is either
    the concept is not (yet?) developed mathematically, or it leads to contradictions. WM's "dark numbers" certainly fall into the first
    category, and possibly the second, too.

    Definition: A natural number is "named" or "addressed" or "identified"
    or "(individually) defined" or "instantiated" if it can be communicated, necessarily by a finite amount of information, in the sense of Poincaré,
    such that sender and receiver understand the same and can link it by a
    finite initial segment (1, 2, 3, ..., n) of natural numbers to the
    origin 0. All other natural numbers are called dark natural numbers.
    Dark numbers are numbers that cannot be chosen as individuals.

    Communication can occur
    - by direct description in the unary system like ||||||| or as many
    beeps, raps, or flashes,
    - by a finite initial segment of natural numbers (1, 2, 3, 4, 5, 6, 7),
    - as n-ary representation, for instance binary 111 or decimal 7,
    - by indirect description like "the number of colours of the rainbow",
    - by other words known to sender and receiver like "seven".

    Only when a number n is identified we can use it in mathematical
    discourse and can determine the trichotomy properties of n and of every multiple k*n or power n^k or power tower k_^n with respect to every
    identified number k. ℕdef contains all defined natural numbers as
    elements – and nothing else. ℕdef is a potentially infinite set;
    therefore henceforth it will be called a collection.

    I first came across the terms "potential infinity" and "actual infinity"
    on this newsgroup, not in my degree course a few decades ago.

    It is carefully avoided because closer inspection shows contradictions. Therefore set theorists use just what they can defend. If actual
    infinity is shown self contradictory (without dark numbers), then they
    evade to potential infinity temporarily which has no completed sets and
    cannot complete bijections.

    "You use terms like completed versus potential infinity, which are not
    part of the modern vernacular." [P.L. Clark in "Physicists can be
    wrong", tea.MathOverflow (2 Jul 2010)] This is the typical reproach to
    be expected when the different kinds of infinity are analyzed and taught.

    Here the difference is clearly stated:
    "Should we briefly characterize the new view of the infinite introduced
    by Cantor, we could certainly say: In analysis we have to deal only with
    the infinitely small and the infinitely large as a limit-notion, as
    something becoming, emerging, produced, i.e., as we put it, with the
    potential infinite. But this is not the proper infinite. That we have
    for instance when we consider the entirety of the numbers 1, 2, 3, 4,
    ... itself as a completed unit, or the points of a line as an entirety
    of things which is completely available. That sort of infinity is named
    actual infinite." [D. Hilbert: "Über das Unendliche", Mathematische
    Annalen 95 (1925) p. 167]

    Regards, WM

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  • From Moebius@21:1/5 to All on Sat Oct 5 22:15:27 2024
    Am 05.10.2024 um 21:07 schrieb Chris M. Thomasson:

    WM thinks the natural numbers are not infinite?

    Right, the natural numbers are not infinite (i.e. each and every natural
    number "is finite"), but there are INFINITELY MANY of them. (*sigh*)

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  • From Alan Mackenzie@21:1/5 to wolfgang.mueckenheim@tha.de on Sat Oct 5 21:57:07 2024
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 05.10.2024 15:57, Alan Mackenzie wrote:

    Yes! At least, sort of. My understanding of "doesn't exist" is either
    the concept is not (yet?) developed mathematically, or it leads to
    contradictions. WM's "dark numbers" certainly fall into the first
    category, and possibly the second, too.

    Definition: A natural number is "named" or "addressed" or "identified"
    or "(individually) defined" or "instantiated" ....

    That's five terms for the same thing. Four of them (at least) are thus redundant. It is unmathematical to have such redundancy.

    .... if it can be communicated, necessarily by a finite amount of information, in the sense of Poincaré, such that sender and receiver understand the same and can link it by a finite initial segment (1, 2,
    3, ..., n) of natural numbers to the origin 0.

    This is ridiculous! It is so far removed from the austere simplicity of,
    for example, Peano's axioms as to be thoroughly unmathematical. Such a definition might have its place in sociology or even philosophy, but not mathematics.

    .... All other natural numbers are called dark natural numbers. Dark
    numbers are numbers that cannot be chosen as individuals.

    Is "chosen" a sixth redundant word for "named", "addressed", ....?

    "Chosen as individuals" isn't a mathemtical concept. This phrase, as it
    is written, makes it sound like the choice is being made by a conscious individual person, according to something unspecified. That doesn't
    belong in mathematics.

    Communication can occur
    - by direct description in the unary system like ||||||| or as many
    beeps, raps, or flashes,
    - by a finite initial segment of natural numbers (1, 2, 3, 4, 5, 6, 7),
    - as n-ary representation, for instance binary 111 or decimal 7,
    - by indirect description like "the number of colours of the rainbow",
    - by other words known to sender and receiver like "seven".

    The existence of natural numbers is independent of their communication by people. Adopting your notions into number theory would make that theory hopelessly awkward and cumbersome and barely, if at all, capable of
    discovering all the fascinating things about numbers that it has done.

    Only when a number n is identified we can use it in mathematical
    discourse ....

    This is something you haven't proved. Given how woolly your definition
    of "identified" is, it's probably something incapable of proof.

    Besides, mathematicians routinely use "unidentified" numbers in
    discourse. For example "If p is a prime number of the form 4m + 1, it is
    the sum of two squares.". That is a statement about an infinite number
    of numbers, none of which are "identified".

    .... and can determine the trichotomy properties of n and of every
    multiple k*n or power n^k or power tower k_^n with respect to every identified number k. ℕdef contains all defined natural numbers as
    elements – and nothing else. ℕdef is a potentially infinite set; therefore henceforth it will be called a collection.

    All natural numbers are "defined" in your sense of that word. As a
    proof, we only need note that every non-empty subset of N has a least
    member. Suppose there is a non-empty set of "undefined" natural numbers.
    Then there is a least such number. The fact of being this least number
    is its definition. We thus have a natural number which is both undefined
    and defined. This is a contradiction. Therefore the assumption of a
    non-empty set of "undefined" numbers must be false.

    I first came across the terms "potential infinity" and "actual infinity"
    on this newsgroup, not in my degree course a few decades ago.

    It is carefully avoided because closer inspection shows contradictions.

    There are no such contradictions.

    Therefore set theorists use just what they can defend. If actual
    infinity is shown self contradictory (without dark numbers), then they
    evade to potential infinity temporarily which has no completed sets and cannot complete bijections.

    Not really. There is simply no need for "actual" and "potential"
    infinity. They are relics from the past, from before the time when mathematicians understood infinity as they do today.

    "You use terms like completed versus potential infinity, which are not
    part of the modern vernacular." [P.L. Clark in "Physicists can be
    wrong", tea.MathOverflow (2 Jul 2010)] This is the typical reproach to
    be expected when the different kinds of infinity are analyzed and taught.

    Here the difference is clearly stated:
    "Should we briefly characterize the new view of the infinite introduced
    by Cantor, we could certainly say: In analysis we have to deal only with
    the infinitely small and the infinitely large as a limit-notion, as something becoming, emerging, produced, i.e., as we put it, with the potential infinite. But this is not the proper infinite. That we have
    for instance when we consider the entirety of the numbers 1, 2, 3, 4,
    ... itself as a completed unit, or the points of a line as an entirety
    of things which is completely available. That sort of infinity is named actual infinite." [D. Hilbert: "Über das Unendliche", Mathematische
    Annalen 95 (1925) p. 167]

    That's from 1925. It is not a modern understanding of the infinite.

    If these terms had any significance, they would still be taught in
    mathematics degree courses. Otherwise, bright students would become
    aware of them and catch out their teachers in inconsistencies. Some such students are almost incredibly bright, and catching out teachers is
    something in the nature of a sport. It happens rarely, but is satisfying
    for all concerned when it does happen.

    Regards, WM

    --
    Alan Mackenzie (Nuremberg, Germany).

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  • From Richard Damon@21:1/5 to All on Sat Oct 5 22:57:36 2024
    On 10/5/24 3:04 PM, WM wrote:
    On 05.10.2024 15:32, Richard Damon wrote:
    On 10/5/24 8:18 AM, WM wrote:
    On 05.10.2024 13:12, Richard Damon wrote:


    But actual infinity doesn't exist.

    How can bijections between infinite sets exist then.

    Because the sets exist as what you think of as "potential" infinity,

    "the integers separately as well as in their actually infinite totality
    exist as eternal ideas in intellectu Divino in the highest degree of reality." [G. Cantor, letter to C. Hermite (30 Nov 1895)]

    but that isn't what your "actual infinity" is, that is just protential infinity.


    we just don't need to generate the full set before we use them (since
    that is the impossible step).

    Is it impossible for the intellectu Divino too? Then Cantor has erred
    and you have discovered his error.

    Regards, WM

    We don't know what is possible for the infinite divine to fully
    experiece, so the question has no answer for us.

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  • From Richard Damon@21:1/5 to All on Sat Oct 5 22:51:08 2024
    On 10/5/24 2:58 PM, WM wrote:
    On 05.10.2024 15:28, Richard Damon wrote:
    On 10/5/24 8:15 AM, WM wrote:
    On 05.10.2024 13:01, Richard Damon wrote:
    On 10/5/24 5:18 AM, WM wrote:
    On 05.10.2024 00:45, Richard Damon wrote:

    Nope, and that is your problem, that property only hold at both
    ends for finite sets.

    Every point is a finite set.

    And the set of *A* point has no "next" point, as it is just one.

    But it has a position, like the point 1/3 - if it is not dark.
    By the way: Also a pair of points is a finite set. And it has a gap
    and every member has a next point.

    So why does that say it has a point next to it?

    A point between both could be chosen unless it was dark.

    Regards, WM


    And that point CAN be found, Given two point x and y, there is a point
    (x+y)/2 between them, so they could not have been "next" to each other,

    The fact that we can keep doing that indefinitely, and never reach a
    point we can't continue, is proof that the concept of "next point"
    doesn't exist, except in your broken logic that actually doesn't
    actually have real infinte sets even though your erroneously try to call
    it actual infinity.

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  • From Richard Damon@21:1/5 to Alan Mackenzie on Sat Oct 5 23:11:51 2024
    On 10/5/24 9:57 AM, Alan Mackenzie wrote:
    Richard Damon <richard@damon-family.org> wrote:
    On 10/5/24 8:58 AM, Alan Mackenzie wrote:
    Richard Damon <richard@damon-family.org> wrote:

    [ .... ]

    But actual infinity doesn't exist.

    What does it mean for a mathematical concept not to exist?

    That it doesn't create a usable (non-contradictory) logical system.

    Yes! At least, sort of. My understanding of "doesn't exist" is either
    the concept is not (yet?) developed mathematically, or it leads to contradictions. WM's "dark numbers" certainly fall into the first
    category, and possibly the second, too.

    I first came across the terms "potential infinity" and "actual infinity"
    on this newsgroup, not in my degree course a few decades ago. I'm not convinced there is any mathematically valid distinction between them. If there were, I would have heard of it back then.

    Does "actual infinity" create a logical system? If so, what is unusable
    or contradictory about that system?

    [ .... ]


    After a bit of reseach, there does seem to be indications that Aristotle
    did do some reasoning with the terms. I am not sure on the exact
    definitions, but the indications are that "potential" infinity was
    generative, where the numbers are realized as they are needed, and you
    can keep creating more and more of them as you go.

    Actual infinity presumed that somehow all the values were created up
    front and none could be added, and he found that logic done on this
    definition was too full of contradictions to be usable, so he concluded
    that "actual infinity" did not really exist.

    My guess is that WM doesn't understand this conclusion, or thinks that
    he is somehow smarter than Aristotle and can make it work (when he can't)

    or just thinks that since the name given was "actual infinity" that fact
    that it doesn't work just means that infinity can't actually exist.

    My guess, from what I have seen from WM, one of the problems with
    "actual infinity" is that it makes it at least seem possible to apply
    the rules of "finite" logic to an infinite logic, and that just breaks
    it. To our finite minds, the rules of infinite logic just don't make
    intuitive sense,

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  • From Richard Damon@21:1/5 to All on Sat Oct 5 23:35:52 2024
    On 10/5/24 2:54 PM, WM wrote:
    On 05.10.2024 15:02, joes wrote:
    Am Sat, 05 Oct 2024 11:32:44 +0200 schrieb WM:
    On 05.10.2024 10:08, joes wrote:
    Am Fri, 04 Oct 2024 22:09:41 +0200 schrieb WM:
    But it is no quantifier shift but simplest logic:
    If ℵ₀ unit fractions do not sit at one point (and are not dark) then >>>>> they can be subdivided into smaller parts.
    Which they can.
    Do it. Fail because slightly fewer is not possible.
    What do you mean? All the unit fractions have, as you say,
    finite distances, which means there are numbers inbetween.
    But these numbers and these unit fractions cannot be found. It is
    impossible to define a unit fraction having less than ℵo smaller unit fractions. It is impossible to define a unit fraction being closer to
    zero although it is obvious that there are points closer to zero than ℵo*2^ℵo points.

    Regards, WM


    But strangely, at least to you, in that set of points are more unit
    fractions, so your set isn't bellow all of them.

    Your problem is you like to generate question about points that just
    don't exist.

    You ASSUME that there is a point below which no unit fractions can be
    defined, but that point is 0, which is below the limit you need.

    ANY finite value above 0 will have Aleph_0 unit fractions below it.

    Your math and logic just can't handle that fact, because you are too
    ignorant to use the right systems, or even to know you need to use
    better math and logic.

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  • From Alan Mackenzie@21:1/5 to Ross Finlayson on Sun Oct 6 10:16:52 2024
    Ross Finlayson <ross.a.finlayson@gmail.com> wrote:
    On 10/05/2024 02:57 PM, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 05.10.2024 15:57, Alan Mackenzie wrote:

    [ .... ]

    I first came across the terms "potential infinity" and "actual infinity" >>>> on this newsgroup, not in my degree course a few decades ago.

    [ .... ]

    If these terms had any significance, they would still be taught in
    mathematics degree courses. Otherwise, bright students would become
    aware of them and catch out their teachers in inconsistencies. Some
    such students are almost incredibly bright, and catching out teachers
    is something in the nature of a sport. It happens rarely, but is
    satisfying for all concerned when it does happen.

    The "actual" and "potential" is rather common usage
    and is usually used to explain "bounded" and "unbounded".

    Assuming you are a maths graduate (are you?), were these terms used in
    your degree course? "Bounded" and "unbounded" are explainable without
    them.

    [ .... ]

    You never heard of "actual infinity and potential infinity"?

    Up until reading them on this newsgroup, as I said, I had never
    encountered these terms.

    I must most surely assume you rather have, ....

    Thanks for taking me at my word.

    .... then thinking that your students ....

    I've never been a teacher, hence have never had students.

    .... don't need it to understand the surrounds, have that it very much
    is what it is, the distinction between the possible and the realized.

    That distinction may be unimportant. It could be that the notion of
    potential infinity as an ongoing process is what has led many
    mathematically less adept people to assert things like 0.999... < 1.

    So far, all we've had about "actual" and "potential" infinity is their definitions. Fair enough. What's missing is an example of a situation
    where assuming something to be potentially infinite would give a correct result, but assuming it to be actually infinite would give a wrong
    result. Or vice versa. Or something like that. If there are no such situations, then the distinction between these two sorts of infinite is
    not mathematically significant.

    [ .... ]

    I mean, you do know a difference between potential and actual as it
    relates to infinity? You agree that there is such a thing.

    You mean, that there is a difference? I remain unconvinced.

    [ .... ]

    --
    Alan Mackenzie (Nuremberg, Germany).

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  • From Alan Mackenzie@21:1/5 to Richard Damon on Sun Oct 6 10:32:22 2024
    Richard Damon <richard@damon-family.org> wrote:
    On 10/5/24 9:57 AM, Alan Mackenzie wrote:
    Richard Damon <richard@damon-family.org> wrote:
    On 10/5/24 8:58 AM, Alan Mackenzie wrote:
    Richard Damon <richard@damon-family.org> wrote:

    [ .... ]

    But actual infinity doesn't exist.

    What does it mean for a mathematical concept not to exist?

    That it doesn't create a usable (non-contradictory) logical system.

    Yes! At least, sort of. My understanding of "doesn't exist" is either
    the concept is not (yet?) developed mathematically, or it leads to
    contradictions. WM's "dark numbers" certainly fall into the first
    category, and possibly the second, too.

    I first came across the terms "potential infinity" and "actual infinity"
    on this newsgroup, not in my degree course a few decades ago. I'm not
    convinced there is any mathematically valid distinction between them. If
    there were, I would have heard of it back then.

    Does "actual infinity" create a logical system? If so, what is unusable
    or contradictory about that system?

    [ .... ]


    After a bit of reseach, there does seem to be indications that Aristotle
    did do some reasoning with the terms. I am not sure on the exact
    definitions, but the indications are that "potential" infinity was generative, where the numbers are realized as they are needed, and you
    can keep creating more and more of them as you go.

    Actual infinity presumed that somehow all the values were created up
    front and none could be added, and he found that logic done on this definition was too full of contradictions to be usable, so he concluded
    that "actual infinity" did not really exist.

    Do you know whether any of Aristotle's contradictions still exist in
    modern maths? I rather suspect not.

    My guess is that WM doesn't understand this conclusion, or thinks that
    he is somehow smarter than Aristotle and can make it work (when he can't)

    WM doesn't seem really to understand the infinite.

    or just thinks that since the name given was "actual infinity" that fact
    that it doesn't work just means that infinity can't actually exist.

    Doesn't it work? If there were any gross problems with it, surely I
    would have heard of these by now.

    My guess, from what I have seen from WM, one of the problems with
    "actual infinity" is that it makes it at least seem possible to apply
    the rules of "finite" logic to an infinite logic, and that just breaks
    it. To our finite minds, the rules of infinite logic just don't make intuitive sense.

    There are rules which apply only to the finite, and these don't extend to
    the infinite. Much like there are physical rules which work at normal
    human scale, but break down in quantum mechanics or special relativity.

    --
    Alan Mackenzie (Nuremberg, Germany).

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  • From joes@21:1/5 to All on Sun Oct 6 11:35:49 2024
    Am Sat, 05 Oct 2024 20:58:59 +0200 schrieb WM:
    On 05.10.2024 15:28, Richard Damon wrote:
    On 10/5/24 8:15 AM, WM wrote:
    On 05.10.2024 13:01, Richard Damon wrote:
    On 10/5/24 5:18 AM, WM wrote:
    On 05.10.2024 00:45, Richard Damon wrote:

    Nope, and that is your problem, that property only hold at both
    ends for finite sets.
    Every point is a finite set.
    And the set of *A* point has no "next" point, as it is just one.
    But it has a position, like the point 1/3 - if it is not dark.
    By the way: Also a pair of points is a finite set. And it has a gap
    and every member has a next point.
    So why does that say it has a point next to it?
    A point between both could be chosen unless it was dark.
    Many points could even be chosen!

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to All on Sun Oct 6 11:28:36 2024
    Am Sat, 05 Oct 2024 21:15:43 +0200 schrieb WM:
    On 05.10.2024 15:57, Alan Mackenzie wrote:

    Yes! At least, sort of. My understanding of "doesn't exist" is either
    the concept is not (yet?) developed mathematically, or it leads to
    contradictions. WM's "dark numbers" certainly fall into the first
    category, and possibly the second, too.
    Definition: A natural number is "named" or "addressed" or "identified"
    or "(individually) defined" or "instantiated" if it can be communicated, necessarily by a finite amount of information, in the sense of Poincaré, such that sender and receiver understand the same and can link it by a
    finite initial segment (1, 2, 3, ..., n) of natural numbers to the
    origin 0. All other natural numbers are called dark natural numbers.
    Dark numbers are numbers that cannot be chosen as individuals.
    That is possible for all natural numbers.

    Communication can occur - by direct description in the unary system like ||||||| or as many beeps, raps, or flashes,
    - by a finite initial segment of natural numbers (1, 2, 3, 4, 5, 6, 7),
    - as n-ary representation, for instance binary 111 or decimal 7,
    - by indirect description like "the number of colours of the rainbow",
    - by other words known to sender and receiver like "seven".
    Where did you get this idea from?

    Only when a number n is identified we can use it in mathematical
    discourse and can determine the trichotomy properties of n and of every multiple k*n or power n^k or power tower k_^n with respect to every identified number k. ℕdef contains all defined natural numbers as
    elements – and nothing else. ℕdef is a potentially infinite set; therefore henceforth it will be called a collection.

    I first came across the terms "potential infinity" and "actual
    infinity"
    on this newsgroup, not in my degree course a few decades ago.
    It is carefully avoided because closer inspection shows contradictions. Therefore set theorists use just what they can defend. If actual
    infinity is shown self contradictory (without dark numbers), then they
    evade to potential infinity temporarily which has no completed sets and cannot complete bijections.
    Seems sensible not to use the contradictory distinction between
    potential and actual.

    "You use terms like completed versus potential infinity, which are not
    part of the modern vernacular." [P.L. Clark in "Physicists can be
    wrong", tea.MathOverflow (2 Jul 2010)] This is the typical reproach to
    be expected when the different kinds of infinity are analyzed and
    taught.
    They are not taught anymore.

    Here the difference is clearly stated:
    "Should we briefly characterize the new view of the infinite introduced
    by Cantor, we could certainly say: In analysis we have to deal only with
    the infinitely small and the infinitely large as a limit-notion, as
    something becoming, emerging, produced, i.e., as we put it, with the potential infinite. But this is not the proper infinite. That we have
    for instance when we consider the entirety of the numbers 1, 2, 3, 4,
    ... itself as a completed unit, or the points of a line as an entirety
    of things which is completely available. That sort of infinity is named actual infinite." [D. Hilbert: "Über das Unendliche", Mathematische
    Annalen 95 (1925) p. 167]
    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to All on Sun Oct 6 11:41:18 2024
    Am Sat, 05 Oct 2024 20:54:21 +0200 schrieb WM:
    On 05.10.2024 15:02, joes wrote:
    Am Sat, 05 Oct 2024 11:32:44 +0200 schrieb WM:
    On 05.10.2024 10:08, joes wrote:
    Am Fri, 04 Oct 2024 22:09:41 +0200 schrieb WM:
    But it is no quantifier shift but simplest logic:
    If ℵ₀ unit fractions do not sit at one point (and are not dark) then >>>>> they can be subdivided into smaller parts.
    Which they can.
    Do it. Fail because slightly fewer is not possible.
    What do you mean? All the unit fractions have, as you say,
    finite distances, which means there are numbers inbetween.
    But these numbers and these unit fractions cannot be found. It is
    impossible to define a unit fraction having less than ℵo smaller unit fractions. It is impossible to define a unit fraction being closer to
    zero although it is obvious that there are points closer to zero than ℵo*2^ℵo points.
    Yes, the can be found, for example by the arithmetic mean. There simply
    are no unit fractions with a finite number of lesser UFs, otherwise those
    that are greater couldn’t have an infinite number less than them. You
    cannot start from zero, count a finite number of UFs, and reach an
    infinity in ever greater steps. It is always possible to increase the denominator to get a UF closer to 0. Every point has a finite distance
    from zero, i.e. an infinite number of points inbetween.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From WM@21:1/5 to Alan Mackenzie on Sun Oct 6 13:41:25 2024
    On 05.10.2024 23:57, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 05.10.2024 15:57, Alan Mackenzie wrote:

    Yes! At least, sort of. My understanding of "doesn't exist" is either
    the concept is not (yet?) developed mathematically, or it leads to
    contradictions. WM's "dark numbers" certainly fall into the first
    category, and possibly the second, too.

    Definition: A natural number is "named" or "addressed" or "identified"
    or "(individually) defined" or "instantiated" ....

    That's five terms for the same thing. Four of them (at least) are thus redundant. It is unmathematical to have such redundancy.

    The vocabulary of my readers is very different. So the c hance of
    understanding is increased.

    .... if it can be communicated, necessarily by a finite amount of
    information, in the sense of Poincaré, such that sender and receiver
    understand the same and can link it by a finite initial segment (1, 2,
    3, ..., n) of natural numbers to the origin 0.

    This is ridiculous! It is so far removed from the austere simplicity of, for example, Peano's axioms as to be thoroughly unmathematical.

    Peano's axioms are invalid fpr large numbers.

    .... All other natural numbers are called dark natural numbers. Dark
    numbers are numbers that cannot be chosen as individuals.

    Is "chosen" a sixth redundant word for "named", "addressed", ....?

    Yes, all these words have the same meaning, but not all readers know all
    words.

    "Chosen as individuals" isn't a mathemtical concept. This phrase, as it
    is written, makes it sound like the choice is being made by a conscious individual person, according to something unspecified. That doesn't
    belong in mathematics.

    It does not belong to the simple but inconsistent present mathematics.

    Communication can occur
    - by direct description in the unary system like ||||||| or as many
    beeps, raps, or flashes,
    - by a finite initial segment of natural numbers (1, 2, 3, 4, 5, 6, 7),
    - as n-ary representation, for instance binary 111 or decimal 7,
    - by indirect description like "the number of colours of the rainbow",
    - by other words known to sender and receiver like "seven".

    The existence of natural numbers is independent of their communication by people.

    You are a believer in God having created them?

    Only when a number n is identified we can use it in mathematical
    discourse ....

    This is something you haven't proved.

    Try to use another number.

    Besides, mathematicians routinely use "unidentified" numbers in
    discourse. For example "If p is a prime number of the form 4m + 1, it is the sum of two squares.". That is a statement about an infinite number
    of numbers, none of which are "identified".

    It is not a statement about an individual number but about a set, some
    of which can be defined.

    .... and can determine the trichotomy properties of n and of every
    multiple k*n or power n^k or power tower k_^n with respect to every
    identified number k. ℕdef contains all defined natural numbers as
    elements – and nothing else. ℕdef is a potentially infinite set;
    therefore henceforth it will be called a collection.

    All natural numbers are "defined" in your sense of that word.

    No, after every identified number almost all are following, almost all
    of them are dark.


    As a
    proof, we only need note that every non-empty subset of N has a least member. Suppose there is a non-empty set of "undefined" natural numbers. Then there is a least such number.

    No. The identified numbers are a potentially infinite collection.
    Therefore there is no least dark number.

    I first came across the terms "potential infinity" and "actual
    infinity"
    on this newsgroup, not in my degree course a few decades ago.

    It is carefully avoided because closer inspection shows contradictions.

    There are no such contradictions.

    There are many. For instance: All unit fractions are separate points on
    the positive real axis, but there are infinitely many for every x > 0.
    That can only hold for definable x, not for all.

    Therefore set theorists use just what they can defend. If actual
    infinity is shown self contradictory (without dark numbers), then they
    evade to potential infinity temporarily which has no completed sets and
    cannot complete bijections.

    Not really. There is simply no need for "actual" and "potential"
    infinity.

    You have not learnt about it during study and obviously not afterwards.

    They are relics from the past, from before the time when
    mathematicians understood infinity as they do today.

    You cannot judge because you don't know that topic and as fellow
    traveler can only parrot the words of matheologians who are either too
    stupid to recognize or too dishonest to confess the truth.

    "You use terms like completed versus potential infinity, which are not
    part of the modern vernacular." [P.L. Clark in "Physicists can be
    wrong", tea.MathOverflow (2 Jul 2010)] This is the typical reproach to
    be expected when the different kinds of infinity are analyzed and
    taught.

    Here the difference is clearly stated:
    "Should we briefly characterize the new view of the infinite introduced
    by Cantor, we could certainly say: In analysis we have to deal only with
    the infinitely small and the infinitely large as a limit-notion, as
    something becoming, emerging, produced, i.e., as we put it, with the
    potential infinite. But this is not the proper infinite. That we have
    for instance when we consider the entirety of the numbers 1, 2, 3, 4,
    ... itself as a completed unit, or the points of a line as an entirety
    of things which is completely available. That sort of infinity is named
    actual infinite." [D. Hilbert: "Über das Unendliche", Mathematische
    Annalen 95 (1925) p. 167]

    That's from 1925. It is not a modern understanding of the infinite.

    But a correct one. The modern understanding is pure deceit.

    If these terms had any significance, they would still be taught in mathematics degree courses.
    No, the teachers of such courses are too stupid or too dishonest.

    Otherwise, bright students would become
    aware of them and catch out their teachers in inconsistencies.

    They do. But every publishing is intercepted by the leading liars.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Sun Oct 6 13:45:01 2024
    On 06.10.2024 04:51, Richard Damon wrote:
    On 10/5/24 2:58 PM, WM wrote:


    So why does that say it has a point next to it?

    A point between both could be chosen unless it was dark.

    And that point CAN be found, Given two point x and y,

    They are not given, but dark. Discrete points on the positive axis have
    a minimum.

    Regards, WM

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  • From joes@21:1/5 to All on Sun Oct 6 11:45:22 2024
    Am Fri, 04 Oct 2024 22:10:35 +0200 schrieb WM:
    On 04.10.2024 13:00, joes wrote:
    Am Fri, 04 Oct 2024 11:33:02 +0200 schrieb WM:

    I know that all numbers which you can choose have ℵ₀ successors.
    Therefore the collection containing all numbers which you can choose
    has ℵ₀ successors.
    I don’t believe anything. The rules of logic which you are so fond of simply do not admit that deduction in general (i.e. it is wrong).
    It is prove correct by the impossibility to circumvent it: all numbers
    which you can choose have ℵ₀ successors. That is essential, not your "rules".
    Those are the rules of logic, you have to follow them.

    What do you mean with the successor of a collection anyway?
    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From WM@21:1/5 to Richard Damon on Sun Oct 6 13:46:42 2024
    On 06.10.2024 04:57, Richard Damon wrote:
    On 10/5/24 3:04 PM, WM wrote:
    On 05.10.2024 15:32, Richard Damon wrote:
    On 10/5/24 8:18 AM, WM wrote:
    On 05.10.2024 13:12, Richard Damon wrote:


    But actual infinity doesn't exist.

    How can bijections between infinite sets exist then.

    Because the sets exist as what you think of as "potential" infinity,

    "the integers separately as well as in their actually infinite
    totality exist as eternal ideas in intellectu Divino in the highest
    degree of reality." [G. Cantor, letter to C. Hermite (30 Nov 1895)]

    but that isn't what your "actual infinity" is, that is just protential infinity.

    No.

    Regards, WM

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  • From Moebius@21:1/5 to All on Sun Oct 6 13:52:15 2024
    Am 06.10.2024 um 13:45 schrieb joes:
    Am Fri, 04 Oct 2024 22:10:35 +0200 schrieb WM:
    On 04.10.2024 13:00, joes wrote:
    > Am Fri, 04 Oct 2024 11:33:02 +0200 schrieb WM:

    >> I know that all numbers which you can choose have ℵ₀ successors.
    >> Therefore the collection containing all numbers which you can choose
    >> has ℵ₀ successors.
    > I don’t believe anything. The rules of logic which you are so fond of >> > simply do not admit that deduction in general (i.e. it is wrong).
    It is prove correct by the impossibility to circumvent it: all numbers
    which you can choose have ℵ₀ successors. That is essential, not your
    "rules".
    Those are the rules of logic, you have to follow them.

    Warum? Seit wann muss ein Geisteskranker iw. "logischen" Regeln folgen?

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  • From WM@21:1/5 to Richard Damon on Sun Oct 6 15:46:47 2024
    On 06.10.2024 05:35, Richard Damon wrote:

    ANY finite value above 0 will have Aleph_0 unit fractions below it.

    Impossible. Among them there must be a first. But they cannot be seen.
    They are dark.

    Your math and logic just can't handle that fact, because

    it is nonsense. Every point is a singleton, a finite set. Every point
    that is not dark can be seen.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Sun Oct 6 15:42:01 2024
    On 06.10.2024 04:51, Richard Damon wrote:
    On 10/5/24 2:58 PM, WM wrote:

    Every point is a finite set.

    The fact that we can keep doing that indefinitely, and never reach a
    point we can't continue, is proof that the concept of "next point"
    doesn't exist

    The concept of point however does exist. Every single point can be found
    unless it is dark.

    Regards, WM

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  • From WM@21:1/5 to Alan Mackenzie on Sun Oct 6 15:52:29 2024
    On 06.10.2024 12:16, Alan Mackenzie wrote:


    You mean, that there is a difference? I remain unconvinced.

    "Numerals constitute a potential infinity. Given any numeral, we can
    construct a new numeral by prefixing it with S. Now imagine this
    potential infinity to be completed. Imagine the inexhaustible process of constructing numerals somehow to have been finished, and call the result
    the set of all numbers, denoted by . Thus  is thought to be an actual infinity or a completed infinity. This is curious terminology, since the etymology of 'infinite' is 'not finished'." [E. Nelson: "Hilbert's
    mistake" (2007) p. 3]

    "A potential infinity is a quantity which is finite but indefinitely
    large. For instance, when we enumerate the natural numbers as 0, 1, 2,
    ..., n, n+1, ..., the enumeration is finite at any point in time, but it
    grows indefinitely and without bound. [...] An actual infinity is a
    completed infinite totality. Examples: , , C[0, 1], L2[0, 1], etc.
    Other examples: gods, devils, etc." [S.G. Simpson: "Potential versus
    actual infinity: Insights from reverse mathematics" (2015)]

    "Potential infinity refers to a procedure that gets closer and closer
    to, but never quite reaches, an infinite end. For instance, the sequence
    of numbers 1, 2, 3, 4, ... gets higher and higher, but it has no end; it
    never gets to infinity. Infinity is just an indication of a direction –
    it's 'somewhere off in the distance'. Chasing this kind of infinity is
    like chasing a rainbow or trying to sail to the edge of the world – you
    may think you see it in the distance, but when you get to where you
    thought it was, you see it is still further away. Geometrically, imagine
    an infinitely long straight line; then 'infinity' is off at the 'end' of
    the line. Analogous procedures are given by limits in calculus, whether
    they use infinity or not. For example, limx0(sinx)/x = 1. This means
    that when we choose values of x that are closer and closer to zero, but
    never quite equal to zero, then (sinx)/x gets closer and closer to one.
    Completed infinity, or actual infinity, is an infinity that one actually reaches; the process is already done. For instance, let's put
    braces around that sequence mentioned earlier: {1, 2, 3, 4, ...}. With
    this notation, we are indicating the set of all positive integers. This
    is just one object, a set. But that set has infinitely many members. By
    that I don't mean that it has a large finite number of members and it
    keeps getting more members. Rather, I mean that it already has
    infinitely many members.
    We can also indicate the completed infinity geometrically. For instance, the diagram at right shows a one-to-one correspondence between
    points on an infinitely long line and points on a semicircle. There are
    no points for plus or minus infinity on the line, but it is natural to
    attach those 'numbers' to the endpoints of the semicircle.
    Isn't that 'cheating', to simply add numbers in this fashion? Not really; it just depends on what we want to use those numbers for. For
    instance, f(x) = 1/(1 + x2) is a continuous function defined for all
    real numbers x, and it also tends to a limit of 0 when x 'goes to' plus
    or minus infinity (in the sense of potential infinity, described
    earlier). Consequently, if we add those two 'numbers' to the real line,
    to get the so-called 'extended real line', and we equip that set with
    the same topology as that of the closed semicircle (i.e., the semicircle including the endpoints), then the function f is continuous everywhere
    on the extended real line." [E. Schechter: "Potential versus completed infinity: Its history and controversy" (5 Dec 2009)]

    Regards, WM

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  • From WM@21:1/5 to joes on Sun Oct 6 15:56:54 2024
    On 06.10.2024 13:28, joes wrote:
    Am Sat, 05 Oct 2024 21:15:43 +0200 schrieb WM:

    Dark numbers are numbers that cannot be chosen as individuals.
    That is possible for all natural numbers.

    No, not those infinitely many which always remain.

    Communication can occur - by direct description in the unary system like
    ||||||| or as many beeps, raps, or flashes,
    - by a finite initial segment of natural numbers (1, 2, 3, 4, 5, 6, 7),
    - as n-ary representation, for instance binary 111 or decimal 7,
    - by indirect description like "the number of colours of the rainbow",
    - by other words known to sender and receiver like "seven".
    Where did you get this idea from?

    I developed it by myself.

    "You use terms like completed versus potential infinity, which are not
    part of the modern vernacular." [P.L. Clark in "Physicists can be
    wrong", tea.MathOverflow (2 Jul 2010)] This is the typical reproach to
    be expected when the different kinds of infinity are analyzed and
    taught.
    They are not taught anymore.

    Not by matheologians.

    "Numerals constitute a potential infinity. Given any numeral, we can
    construct a new numeral by prefixing it with S. Now imagine this
    potential infinity to be completed. Imagine the inexhaustible process of constructing numerals somehow to have been finished, and call the result
    the set of all numbers, denoted by . Thus  is thought to be an actual infinity or a completed infinity. This is curious terminology, since the etymology of 'infinite' is 'not finished'." [E. Nelson: "Hilbert's
    mistake" (2007) p. 3]

    According to (Gödel's) Platonism, objects of mathematics have the same
    status of reality as physical objects. "Views to the effect that
    Platonism is correct but only for certain relatively 'concrete'
    mathematical 'objects'. Other mathematical 'objects' are man made, and
    are not part of an external reality. Under such a view, what is to be
    made of the part of mathematics that lies outside the scope of
    Platonism? An obvious response is to reject it as utterly meaningless."
    [H.M. Friedman: "Philosophical problems in logic" (2002) p. 9]

    "A potential infinity is a quantity which is finite but indefinitely
    large. For instance, when we enumerate the natural numbers as 0, 1, 2,
    ..., n, n+1, ..., the enumeration is finite at any point in time, but it
    grows indefinitely and without bound. [...] An actual infinity is a
    completed infinite totality. Examples: , , C[0, 1], L2[0, 1], etc.
    Other examples: gods, devils, etc." [S.G. Simpson: "Potential versus
    actual infinity: Insights from reverse mathematics" (2015)]

    "Potential infinity refers to a procedure that gets closer and closer
    to, but never quite reaches, an infinite end. For instance, the sequence
    of numbers 1, 2, 3, 4, ... gets higher and higher, but it has no end; it
    never gets to infinity. Infinity is just an indication of a direction –
    it's 'somewhere off in the distance'. Chasing this kind of infinity is
    like chasing a rainbow or trying to sail to the edge of the world – you
    may think you see it in the distance, but when you get to where you
    thought it was, you see it is still further away. Geometrically, imagine
    an infinitely long straight line; then 'infinity' is off at the 'end' of
    the line. Analogous procedures are given by limits in calculus, whether
    they use infinity or not. For example, limx0(sinx)/x = 1. This means
    that when we choose values of x that are closer and closer to zero, but
    never quite equal to zero, then (sinx)/x gets closer and closer to one.
    Completed infinity, or actual infinity, is an infinity that one actually reaches; the process is already done. For instance, let's put
    braces around that sequence mentioned earlier: {1, 2, 3, 4, ...}. With
    this notation, we are indicating the set of all positive integers. This
    is just one object, a set. But that set has infinitely many members. By
    that I don't mean that it has a large finite number of members and it
    keeps getting more members. Rather, I mean that it already has
    infinitely many members.
    We can also indicate the completed infinity geometrically. For instance, the diagram at right shows a one-to-one correspondence between
    points on an infinitely long line and points on a semicircle. There are
    no points for plus or minus infinity on the line, but it is natural to
    attach those 'numbers' to the endpoints of the semicircle.
    Isn't that 'cheating', to simply add numbers in this fashion? Not really; it just depends on what we want to use those numbers for. For
    instance, f(x) = 1/(1 + x2) is a continuous function defined for all
    real numbers x, and it also tends to a limit of 0 when x 'goes to' plus
    or minus infinity (in the sense of potential infinity, described
    earlier). Consequently, if we add those two 'numbers' to the real line,
    to get the so-called 'extended real line', and we equip that set with
    the same topology as that of the closed semicircle (i.e., the semicircle including the endpoints), then the function f is continuous everywhere
    on the extended real line." [E. Schechter: "Potential versus completed infinity: Its history and controversy" (5 Dec 2009)]

    Regards, WM

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  • From WM@21:1/5 to joes on Sun Oct 6 15:58:33 2024
    On 06.10.2024 13:35, joes wrote:

    A point between both could be chosen unless it was dark.
    Many points could even be chosen!

    But ℵo unit fractions and the points between them cannot.

    Regards, WM

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  • From Alan Mackenzie@21:1/5 to wolfgang.mueckenheim@tha.de on Sun Oct 6 13:59:46 2024
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 05.10.2024 23:57, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 05.10.2024 15:57, Alan Mackenzie wrote:

    Yes! At least, sort of. My understanding of "doesn't exist" is either >>>> the concept is not (yet?) developed mathematically, or it leads to
    contradictions. WM's "dark numbers" certainly fall into the first
    category, and possibly the second, too.

    Definition: A natural number is "named" or "addressed" or "identified"
    or "(individually) defined" or "instantiated" ....

    That's five terms for the same thing. Four of them (at least) are thus
    redundant. It is unmathematical to have such redundancy.

    The vocabulary of my readers is very different. So the chance of understanding is increased.

    I doubt that. If you cannot even teach them a coherent definition of a
    single term, they are not the sort of readers who would understand
    anyway. Five (or six) terms for the same thing in mathematics can only
    induce confusion and vagueness.

    .... if it can be communicated, necessarily by a finite amount of
    information, in the sense of Poincaré, such that sender and receiver
    understand the same and can link it by a finite initial segment (1, 2,
    3, ..., n) of natural numbers to the origin 0.

    This is ridiculous! It is so far removed from the austere simplicity of,
    for example, Peano's axioms as to be thoroughly unmathematical.

    Peano's axioms are invalid for large numbers.

    Peano's axioms _define_ natural numbers. They are thus valid for all
    natural numbers by definition. Any numbers for which they are invalid
    are not natural numbers.

    .... All other natural numbers are called dark natural numbers. Dark
    numbers are numbers that cannot be chosen as individuals.

    Is "chosen" a sixth redundant word for "named", "addressed", ....?

    Yes, all these words have the same meaning, but not all readers know all words.

    I think they're likely to know all of them in a normal English language
    context if they know English at all. Of course, they have different
    meanings in English. Making them have the same meaning in your variety
    of mathematics can only lead to confusion.

    "Chosen as individuals" isn't a mathemtical concept. This phrase, as it
    is written, makes it sound like the choice is being made by a conscious
    individual person, according to something unspecified. That doesn't
    belong in mathematics.

    It does not belong to the simple but inconsistent present mathematics.

    It does not belong in any mathematics. The insinuation that present mathematics is inconsistent is unwarranted. It's not.

    Communication can occur
    - by direct description in the unary system like ||||||| or as many
    beeps, raps, or flashes,
    - by a finite initial segment of natural numbers (1, 2, 3, 4, 5, 6, 7),
    - as n-ary representation, for instance binary 111 or decimal 7,
    - by indirect description like "the number of colours of the rainbow",
    - by other words known to sender and receiver like "seven".

    The existence of natural numbers is independent of their communication by
    people.

    You are a believer in God having created them?

    You're twisting my meaning here. All natural numbers exist, by Peano's
    axioms. Any particular natural number exists independently of whether it
    has been, or even could be, communicated between humans.

    Only when a number n is identified we can use it in mathematical
    discourse ....

    This is something you haven't proved.

    Try to use another number.

    That "answer" bears no relationship to my point. You haven't proved
    anything about "identified" numbers, you can't, and you're not going to.

    Besides, mathematicians routinely use "unidentified" numbers in
    discourse. For example "If p is a prime number of the form 4m + 1, it is
    the sum of two squares.". That is a statement about an infinite number
    of numbers, none of which are "identified".

    It is not a statement about an individual number but about a set, some
    of which can be defined.

    Don't be so silly! It's a statement about each of the numbers in an
    infinite set. To repeat, it's a statement about "unidentified" numbers,
    made by mathematicians, hence is a counter example to your assertion that
    only "identified" numbers can be used in mathematical discourse.

    .... and can determine the trichotomy properties of n and of every
    multiple k*n or power n^k or power tower k_^n with respect to every
    identified number k. ℕdef contains all defined natural numbers as
    elements – and nothing else. ℕdef is a potentially infinite set;
    therefore henceforth it will be called a collection.

    All natural numbers are "defined" in your sense of that word.

    No, after every identified number almost all are following, almost all
    of them are dark.

    As I said, all natural number are defined, as I have proved below.

    As a proof, we only need note that every non-empty subset of N has a
    least member. Suppose there is a non-empty set of "undefined" natural
    numbers. Then there is a least such number.

    No. The identified numbers are a potentially infinite collection.
    Therefore there is no least dark number.

    The "unidentified" natural numbers are a subset of N. Otherwise this
    whole discussion is meaningless.

    You're confusing yourself with the "potential" in potential infinity,
    which shows why the outmoded term is such a bad idea. The set of
    "identified" numbers is either finite or infinite. Given that N is
    infinite, if the set of "identified" numbers is finite, its complement
    must exist and be non-empty. It therefore has a least member, which is
    thus "identified". Contradiction.

    I first came across the terms "potential infinity" and "actual
    infinity" on this newsgroup, not in my degree course a few decades
    ago.

    It is carefully avoided because closer inspection shows contradictions.

    There are no such contradictions.

    There are many. For instance: All unit fractions are separate points on
    the positive real axis, but there are infinitely many for every x > 0.
    That can only hold for definable x, not for all.

    Poppycock! You'll have to do better than that to provide such a
    contradiction. Hint: Skilled mathematicians have worked on trying to
    prove the inconsistency of maths, without success. You (not a
    mathematician) or I don't stand a chance of succeeding in this.

    Therefore set theorists use just what they can defend. If actual
    infinity is shown self contradictory (without dark numbers), then they
    evade to potential infinity temporarily which has no completed sets and
    cannot complete bijections.

    Not really. There is simply no need for "actual" and "potential"
    infinity.

    You have not learnt about it during study and obviously not afterwards.

    I've learnt about it here on sci.math. So far, nobody's produced a
    situation where the difference between "actual" and "potential" infinity
    makes a difference. Historically, the terms have fallen into disuse,
    because they're not useful in maths.

    They are relics from the past, from before the time when
    mathematicians understood infinity as they do today.

    You cannot judge because you don't know that topic ....

    I am a graduate in maths ....

    .... and as fellow traveler can only parrot the words of matheologians
    who are either too stupid to recognize or too dishonest to confess the
    truth.

    .... and able to understand and follow mathematical argument, and to distinguish mathematical notions from pure hogwash.

    "You use terms like completed versus potential infinity, which are
    not part of the modern vernacular." [P.L. Clark in "Physicists can be
    wrong", tea.MathOverflow (2 Jul 2010)] This is the typical reproach
    to be expected when the different kinds of infinity are analyzed and
    taught.

    Here the difference is clearly stated:
    "Should we briefly characterize the new view of the infinite introduced
    by Cantor, we could certainly say: In analysis we have to deal only with >>> the infinitely small and the infinitely large as a limit-notion, as
    something becoming, emerging, produced, i.e., as we put it, with the
    potential infinite. But this is not the proper infinite. That we have
    for instance when we consider the entirety of the numbers 1, 2, 3, 4,
    ... itself as a completed unit, or the points of a line as an entirety
    of things which is completely available. That sort of infinity is named
    actual infinite." [D. Hilbert: "Über das Unendliche", Mathematische
    Annalen 95 (1925) p. 167]

    That's from 1925. It is not a modern understanding of the infinite.

    But a correct one. The modern understanding is pure deceit.

    No, the modern one is a result of research and improved understanding.
    Deceit would not survive long before being unmasked.

    If these terms had any significance, they would still be taught in
    mathematics degree courses.

    No, the teachers of such courses are too stupid or too dishonest.

    Who do you think you are to accuse others of being stupid or dishonest?

    Otherwise, bright students would become aware of them and catch out
    their teachers in inconsistencies.

    They do. But every publishing is intercepted by the leading liars.

    <Sigh> When I was an undergraduate, students published lots of
    magazines, some of them about maths. I'm sure they still do, though they
    are likely to be online these days. The "deceit" you think happens would
    be exposed in these magazines, and thus become known, both to other
    students and the deceiver's colleagues, and eventually to the public at
    large. There is no system of censorship in place which could counter
    this. Honest academics (the vast majority) would not risk it.

    Regards, WM

    --
    Alan Mackenzie (Nuremberg, Germany).

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  • From WM@21:1/5 to joes on Sun Oct 6 16:01:27 2024
    On 06.10.2024 13:41, joes wrote:
    There simply
    are no unit fractions with a finite number of lesser UFs,

    If ℵo unit fractions are there, then every finite subset is there too.

    You
    cannot start from zero, count a finite number of UFs, and reach an
    infinity in ever greater steps.

    So it is. But the UFs must be there, because every infinite set consists
    of single elements.

    Regards, WM

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  • From WM@21:1/5 to joes on Sun Oct 6 16:04:55 2024
    On 06.10.2024 13:45, joes wrote:
    Am Fri, 04 Oct 2024 22:10:35 +0200 schrieb WM:
    all numbers
    which you can choose have ℵ₀ successors. That is essential, not your
    "rules".
    Those are the rules of logic, you have to follow them

    I follow the reality of mathematics.

    > What do you mean with the successor of a collection anyway?

    Beyond the collection there are ℵo elements that cannot be reached individually.

    Regards, WM

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  • From Moebius@21:1/5 to All on Sun Oct 6 16:37:39 2024
    Am 06.10.2024 um 15:59 schrieb Alan Mackenzie:

    Who do you think you are to accuse others of being stupid or dishonest?

    Huh?!

    It's well known that Mückenheim is the GRÖMAZ (der größte Mathematiker aller Zeiten / the greatest mathematician of all times).

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  • From Alan Mackenzie@21:1/5 to wolfgang.mueckenheim@tha.de on Sun Oct 6 14:52:20 2024
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 06.10.2024 12:16, Alan Mackenzie wrote:


    You mean, that there is a difference? I remain unconvinced.

    [ .... ]

    "A potential infinity is a quantity which is finite but indefinitely
    large. For instance, when we enumerate the natural numbers as 0, 1, 2,
    ..., n, n+1, ..., the enumeration is finite at any point in time, ....

    That is a mistake. The ellipses indicate the enumeration. There is no
    time. If one must consider time, then the enumeration happens
    instantaneously.

    This idea of time may be what misleads the mathematically less adept
    into believing that 0.999... < 1.

    .... but it grows indefinitely and without bound. [...] An actual
    infinity is a completed infinite totality. Examples: , , C[0, 1],
    L2[0, 1], etc. Other examples: gods, devils, etc." [S.G. Simpson:
    "Potential versus actual infinity: Insights from reverse mathematics"
    (2015)]

    "Potential infinity refers to a procedure that gets closer and closer
    to, but never quite reaches, an infinite end. For instance, the sequence
    of numbers 1, 2, 3, 4, ... gets higher and higher, but it has no end; it never gets to infinity. Infinity is just an indication of a direction – it's 'somewhere off in the distance'. Chasing this kind of infinity is
    like chasing a rainbow or trying to sail to the edge of the world – you may think you see it in the distance, but when you get to where you
    thought it was, you see it is still further away. Geometrically, imagine
    an infinitely long straight line; then 'infinity' is off at the 'end' of
    the line. Analogous procedures are given by limits in calculus, whether
    they use infinity or not. For example, limx0(sinx)/x = 1. This means
    that when we choose values of x that are closer and closer to zero, but never quite equal to zero, then (sinx)/x gets closer and closer to one.
    Completed infinity, or actual infinity, is an infinity that one actually reaches; the process is already done. For instance, let's put braces around that sequence mentioned earlier: {1, 2, 3, 4, ...}. With
    this notation, we are indicating the set of all positive integers. This
    is just one object, a set. But that set has infinitely many members. By
    that I don't mean that it has a large finite number of members and it
    keeps getting more members. Rather, I mean that it already has
    infinitely many members.
    We can also indicate the completed infinity geometrically. For instance, the diagram at right shows a one-to-one correspondence between points on an infinitely long line and points on a semicircle. There are
    no points for plus or minus infinity on the line, but it is natural to attach those 'numbers' to the endpoints of the semicircle.
    Isn't that 'cheating', to simply add numbers in this fashion? Not really; it just depends on what we want to use those numbers for. For instance, f(x) = 1/(1 + x2) is a continuous function defined for all
    real numbers x, and it also tends to a limit of 0 when x 'goes to' plus
    or minus infinity (in the sense of potential infinity, described
    earlier). Consequently, if we add those two 'numbers' to the real line,
    to get the so-called 'extended real line', and we equip that set with
    the same topology as that of the closed semicircle (i.e., the semicircle including the endpoints), then the function f is continuous everywhere
    on the extended real line." [E. Schechter: "Potential versus completed infinity: Its history and controversy" (5 Dec 2009)]

    The above is all very poetic, this supposed difference between "actual"
    and "potential" infinite, but it is not mathematical. There are no mathematical theorems which depend for their theoremhood on the supposed distinction between "actual" and "potential" infinite. That is likely
    why the terms have fallen out of use as mathematics has advanced.

    Regards, WM

    --
    Alan Mackenzie (Nuremberg, Germany).

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  • From WM@21:1/5 to joes on Sun Oct 6 16:15:27 2024
    On 06.10.2024 14:01, joes wrote:
    Am Sun, 06 Oct 2024 12:32:16 +0200 schrieb WM:
    On 06.10.2024 11:49, Moebius wrote:
    Am 06.10.2024 um 10:40 schrieb WM:
    On 06.10.2024 05:35, Moebius wrote:
    Am 05.10.2024 um 22:38 schrieb WM:
    On 05.10.2024 22:13, Moebius wrote:
    Am 05.10.2024 um 22:01 schrieb WM:

    ω/2 * 2 e IN,
    Nein.
    Doch, weil IN gegenüber der Multiplikation ABGESCHLOSSEN ist. (Das
    kannst Du sogar in deinem Bestseller nachlesen, falls Du es
    inzwischen vergessen haben solltest.) Mit ω/2 e IN wäre auch ω/2 * 2 >>>>> e IN (weil 2 e IN ist).
    Das gilt für
    die Menge IN (und deren Elemente), wie schon gesagt.
    In Zeichen: An,m e IN: n * m e IN.
    Komisch auch, dass ω/2*2 (ist die Reihenfolge wichtig?)

    Nein.

    nicht in N ist,
    obwohl ω/2 es ja sein soll.

    Ist auch so. Siehe hier:

    {1, 2, 3, ..., ω}*2 = {2, 4, 6, ..., ω*2} mit ω oder ω+1 mittendrin.

    Wenn Du es sagst
    Leider kann man sich in der Mathematik /die Ergebnisse/ nicht
    aussuchen.
    Aber man kann die offensichtlich falschen zurückweisen. Dazu gehört,
    dass bei Multiplikation mit 2 die Realität der Menge halbiert wird.
    Korrektheit hat nichts mit Ästhetik zu tun.
    Was ist diese „Realität”?

    Realität ist, dass es mehr ganze als gerade Zahlen gibt, weil jede
    gerade ganz, aber nicht jede ganze gerade ist.

    Dass G zu N gleichmächtig ist, mit der
    Bijektion n->2n?

    Ist Unsinn.

    es bleiben nach wie vor |ℕ| Zahlen,
    DAS ist wiederum richtig! :-)
    Hint: card(IN) = card(G).
    Das wiederum gilt nur für das potentiell Unendliche. Im aktual
    Unendlichen ist Card Unsinn.
    Und doch hast du keine Alternative geboten

    Doch, s. unten.

    (außer, dass jede Menge
    ihre eigene Kardinalität hätte).

    Das ist doch auch richtig (wobei man besser von Anzahl sprechen sollte).

    14.1 Comparing infinite sets by size

    It is strange that blatantly false results like the equinumerosity of
    prime numbers and algebraic numbers could capture mathematics and stay
    there for over a century. But by what meaningful mathematics can we
    replace Cantor's wrong cardinality results?

    Not all infinite sets can be compared by size, but we can establish some
    useful rules.

     The rule of subset proves that every proper subset has fewer elements
    than its superset. So there are more natural numbers than prime numbers,
    |N| > |P|, and more complex numbers than real numbers, |C| > |R|. Even finitely many exceptions from the subset-relation are admitted for
    infinite subsets. Therefore there are more odd numbers than prime
    numbers |O| > |P|.

     The rule of construction yields the numbers of integers |Z| = 2|N| + 1
    and the number of fractions |Q| = 2|N|^2 + 1 (there are fewer rational
    numbers Q# ). Since all products of rational numbers with an irrational
    number are irrational, there are many more irrational numbers than
    rational numbers |X| > |Q#|.

     The rule of symmetry yields precisely the same number of real
    geometric points in every interval (n, n+1] and with at most a small
    error same number of odd numbers and of even numbers in every finite
    interval and in the whole real line.

    This theory makes the number of natural numbers (and of course of other
    sets too) depending on the numerical representation. The set {1, 11,
    111, ...} of natural numbers has only comparatively few elements.
    Therefore the set of natural numbers in unary or binary notation has
    fewer, in hexadecimal notation more than |N| elements. The set {10, 20,
    30, ...} has |N|/10 elements, but if the zeros are only applied as
    decoration, this set, like the set {1', 2', 3', ...}, has |N| elements.
    It will be a matter of future research to investigate the effect of
    different numerical systems in detail.

    Gruß, WM

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  • From WM@21:1/5 to Alan Mackenzie on Sun Oct 6 17:26:07 2024
    On 06.10.2024 16:52, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    "A potential infinity is a quantity which is finite but indefinitely
    large. For instance, when we enumerate the natural numbers as 0, 1, 2,
    ..., n, n+1, ..., the enumeration is finite at any point in time, ....

    That is a mistake. The ellipses indicate the enumeration. There is no
    time. If one must consider time, then the enumeration happens instantaneously.

    In potential infinity there is time or at least a sequence of steps.

    This idea of time may be what misleads the mathematically less adept
    into believing that 0.999... < 1.

    That is true even in actual infinity.
    We can add 9 to 0.999...999 to obtain 9.999...999. But multiplying
    0.999...999 by 10 or, what is the same, shifting the digits 9 by one
    step to the left-hand side, does not increase their number but leaves it constant: 9.99...9990.

    10*0.999...999 = 9.99...9990 = 9 + 0.99...9990 < 9 + 0.999...999
    9*0.999...999 < 9 as it should be.

    .... but it grows indefinitely and without bound. [...] An actual
    infinity is a completed infinite totality. Examples: , , C[0, 1],
    L2[0, 1], etc. Other examples: gods, devils, etc." [S.G. Simpson:
    "Potential versus actual infinity: Insights from reverse mathematics"
    (2015)]

    "Potential infinity refers to a procedure that gets closer and closer
    to, but never quite reaches, an infinite end. For instance, the sequence
    of numbers 1, 2, 3, 4, ... gets higher and higher, but it has no end; it
    never gets to infinity. Infinity is just an indication of a direction –
    it's 'somewhere off in the distance'. Chasing this kind of infinity is
    like chasing a rainbow or trying to sail to the edge of the world – you
    may think you see it in the distance, but when you get to where you
    thought it was, you see it is still further away. Geometrically, imagine
    an infinitely long straight line; then 'infinity' is off at the 'end' of
    the line. Analogous procedures are given by limits in calculus, whether
    they use infinity or not. For example, limx0(sinx)/x = 1. This means
    that when we choose values of x that are closer and closer to zero, but
    never quite equal to zero, then (sinx)/x gets closer and closer to one.
    Completed infinity, or actual infinity, is an infinity that one
    actually reaches; the process is already done. For instance, let's put
    braces around that sequence mentioned earlier: {1, 2, 3, 4, ...}. With
    this notation, we are indicating the set of all positive integers. This
    is just one object, a set. But that set has infinitely many members. By
    that I don't mean that it has a large finite number of members and it
    keeps getting more members. Rather, I mean that it already has
    infinitely many members.
    We can also indicate the completed infinity geometrically. For
    instance, the diagram at right shows a one-to-one correspondence between
    points on an infinitely long line and points on a semicircle. There are
    no points for plus or minus infinity on the line, but it is natural to
    attach those 'numbers' to the endpoints of the semicircle.
    Isn't that 'cheating', to simply add numbers in this fashion? Not
    really; it just depends on what we want to use those numbers for. For
    instance, f(x) = 1/(1 + x2) is a continuous function defined for all
    real numbers x, and it also tends to a limit of 0 when x 'goes to' plus
    or minus infinity (in the sense of potential infinity, described
    earlier). Consequently, if we add those two 'numbers' to the real line,
    to get the so-called 'extended real line', and we equip that set with
    the same topology as that of the closed semicircle (i.e., the semicircle
    including the endpoints), then the function f is continuous everywhere
    on the extended real line." [E. Schechter: "Potential versus completed
    infinity: Its history and controversy" (5 Dec 2009)]

    The above is all very poetic, this supposed difference between "actual"
    and "potential" infinite, but it is not mathematical. There are no mathematical theorems which depend for their theoremhood on the supposed distinction between "actual" and "potential" infinite.

    Set theory depends on actual infinity. Bijections must be complete. But Cantor's bijections never are complete. Cantor's list must be completely enumerated by natural numbers. The diagonal number must be complete such
    that no digit is missing in order to be distinct from every listed real
    number. Impossible. All that is nonsense.

    Regards, WM

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  • From WM@21:1/5 to Alan Mackenzie on Sun Oct 6 17:38:17 2024
    On 06.10.2024 15:59, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    All unit fractions are separate points on
    the positive real axis, but there are infinitely many for every x > 0.
    That can only hold for definable x, not for all.

    Poppycock! You'll have to do better than that to provide such a contradiction.

    It is good enough, but you can't understand.

    Hint: Skilled mathematicians have worked on trying to
    prove the inconsistency of maths, without success.

    What shall that prove? Try to understand.
    You cannot judge because you don't know that topic ....

    I am a graduate in maths ....

    Here is not discussed what you have studied. Remember, not even infinity
    has been taught. Therefore you cannot judge.

    .... and as fellow traveler can only parrot the words of matheologians
    who are either too stupid to recognize or too dishonest to confess the
    truth.

    .... and able to understand and follow mathematical argument,

    Try only to understand my argument. ∀n ∈ ℕ: 1/n - 1/(n+1) > 0. How can infinitely many unit fractions appear before every x > 0?

    If these terms had any significance, they would still be taught in
    mathematics degree courses.

    No, the teachers of such courses are too stupid or too dishonest.

    Who do you think you are to accuse others of being stupid or dishonest?

    I know that I have understood that topic better than the stupids.

    Otherwise, bright students would become aware of them and catch out
    their teachers in inconsistencies.

    They do. But every publishing is intercepted by the leading liars.

    <Sigh> When I was an undergraduate, students published lots of
    magazines, some of them about maths. I'm sure they still do, though they are likely to be online these days. The "deceit" you think happens would
    be exposed in these magazines, and thus become known,

    You cannot believe that I am right, therefore you don't wish that I am
    right, and you try to dismiss my argument.

    Regards, WM

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  • From Moebius@21:1/5 to All on Sun Oct 6 18:14:24 2024
    Am 06.10.2024 um 17:48 schrieb Alan Mackenzie:

    It's generated by an infinite process

    No, it isn't.

    It just is.
    Right.

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  • From joes@21:1/5 to All on Sun Oct 6 15:55:21 2024
    Am Sun, 06 Oct 2024 17:26:07 +0200 schrieb WM:
    On 06.10.2024 16:52, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    "A potential infinity is a quantity which is finite but indefinitely
    large. For instance, when we enumerate the natural numbers as 0, 1, 2,
    ..., n, n+1, ..., the enumeration is finite at any point in time, ....
    That is a mistake. The ellipses indicate the enumeration. There is no
    time. If one must consider time, then the enumeration happens
    instantaneously.
    In potential infinity there is time or at least a sequence of steps.

    This idea of time may be what misleads the mathematically less adept
    into believing that 0.999... < 1.
    That is true even in actual infinity.
    We can add 9 to 0.999...999 to obtain 9.999...999. But multiplying 0.999...999 by 10 or, what is the same, shifting the digits 9 by one
    step to the left-hand side, does not increase their number but leaves it constant: 9.99...9990.
    10*0.999...999 = 9.99...9990 = 9 + 0.99...9990 < 9 + 0.999...999 ==> 9*0.999...999 < 9 as it should be.
    In actual infinity, there is no last 9 (that would not be infinite).
    One cannot place something after an infinity; your „last” digits would
    have places ω+k. Instead, there are all(!) |N|=Aleph_0 places, meaning
    the nines don’t end. How can you shift what you call dark?
    Consider the bijection f(x)=x-1 from N\{0} to N.

    The above is all very poetic, this supposed difference between "actual"
    and "potential" infinite, but it is not mathematical. There are no
    mathematical theorems which depend for their theoremhood on the
    supposed distinction between "actual" and "potential" infinite.
    Set theory depends on actual infinity. Bijections must be complete. But Cantor's bijections never are complete. Cantor's list must be completely enumerated by natural numbers. The diagonal number must be complete such
    that no digit is missing in order to be distinct from every listed real number. Impossible. All that is nonsense.
    Your argument is not particular to Canter, you merely picked him to
    elevate yourself. Your only problem is not grasping the actual
    infinity of the naturals.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From Alan Mackenzie@21:1/5 to wolfgang.mueckenheim@tha.de on Sun Oct 6 15:48:19 2024
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 06.10.2024 16:52, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    "A potential infinity is a quantity which is finite but indefinitely
    large. For instance, when we enumerate the natural numbers as 0, 1, 2,
    ..., n, n+1, ..., the enumeration is finite at any point in time, ....

    That is a mistake. The ellipses indicate the enumeration. There is no
    time. If one must consider time, then the enumeration happens
    instantaneously.

    In potential infinity there is time or at least a sequence of steps.

    There is a timeless sequence of steps.

    This idea of time may be what misleads the mathematically less adept
    into believing that 0.999... < 1.

    That is true even in actual infinity.
    We can add 9 to 0.999...999 to obtain 9.999...999. But multiplying 0.999...999 by 10 or, what is the same, shifting the digits 9 by one
    step to the left-hand side, does not increase their number but leaves it constant: 9.99...9990.

    Totally irrelevant to my point. I was talking about the unbounded
    sequence 0.999.... You have replied about a bounded finite sequence of
    9's.

    10*0.999...999 = 9.99...9990 = 9 + 0.99...9990 < 9 + 0.999...999
    9*0.999...999 < 9 as it should be.

    Again, totally missing the point.

    .... but it grows indefinitely and without bound. [...] An actual
    infinity is a completed infinite totality. Examples: , , C[0, 1],
    L2[0, 1], etc. Other examples: gods, devils, etc." [S.G. Simpson:
    "Potential versus actual infinity: Insights from reverse mathematics"
    (2015)]

    "Potential infinity refers to a procedure that gets closer and closer
    to, but never quite reaches, an infinite end. For instance, the sequence >>> of numbers 1, 2, 3, 4, ... gets higher and higher, but it has no end; it >>> never gets to infinity. Infinity is just an indication of a direction – >>> it's 'somewhere off in the distance'. Chasing this kind of infinity is
    like chasing a rainbow or trying to sail to the edge of the world – you >>> may think you see it in the distance, but when you get to where you
    thought it was, you see it is still further away. Geometrically, imagine >>> an infinitely long straight line; then 'infinity' is off at the 'end' of >>> the line. Analogous procedures are given by limits in calculus, whether
    they use infinity or not. For example, limx0(sinx)/x = 1. This means
    that when we choose values of x that are closer and closer to zero, but
    never quite equal to zero, then (sinx)/x gets closer and closer to one.
    Completed infinity, or actual infinity, is an infinity that one
    actually reaches; the process is already done. For instance, let's put
    braces around that sequence mentioned earlier: {1, 2, 3, 4, ...}. With
    this notation, we are indicating the set of all positive integers. This
    is just one object, a set. But that set has infinitely many members. By
    that I don't mean that it has a large finite number of members and it
    keeps getting more members. Rather, I mean that it already has
    infinitely many members.
    We can also indicate the completed infinity geometrically. For
    instance, the diagram at right shows a one-to-one correspondence between >>> points on an infinitely long line and points on a semicircle. There are
    no points for plus or minus infinity on the line, but it is natural to
    attach those 'numbers' to the endpoints of the semicircle.
    Isn't that 'cheating', to simply add numbers in this fashion? Not >>> really; it just depends on what we want to use those numbers for. For
    instance, f(x) = 1/(1 + x2) is a continuous function defined for all
    real numbers x, and it also tends to a limit of 0 when x 'goes to' plus
    or minus infinity (in the sense of potential infinity, described
    earlier). Consequently, if we add those two 'numbers' to the real line,
    to get the so-called 'extended real line', and we equip that set with
    the same topology as that of the closed semicircle (i.e., the semicircle >>> including the endpoints), then the function f is continuous everywhere
    on the extended real line." [E. Schechter: "Potential versus completed
    infinity: Its history and controversy" (5 Dec 2009)]

    The above is all very poetic, this supposed difference between "actual"
    and "potential" infinite, but it is not mathematical. There are no
    mathematical theorems which depend for their theoremhood on the supposed
    distinction between "actual" and "potential" infinite.

    Set theory depends on actual infinity.

    How would it go wrong if there were merely potential infinity?

    How does it go wrong using the modern mathematical notion of (plain)
    infinity?

    Bijections must be complete.

    The word "complete" is misleading when talking about infinite things. Bijections are just as complete with "potential infinity" as with "actual infinity".

    But Cantor's bijections never are complete. Cantor's list must be
    completely enumerated by natural numbers. The diagonal number must be complete such that no digit is missing in order to be distinct from
    every listed real number. Impossible. All that is nonsense.

    Yes I agree with that last sentiment. Talking about "completely" with
    regard to infinite sets is nonsense. It isn't even clear what you mean
    by saying the diagonal number must be "complete". It's generated by an infinite process, but remember there's no time involved. It just is.

    I note you haven't yet specified anything which essentially depends on
    the supposed difference between "potential" and "actual" infinite.

    Regards, WM

    --
    Alan Mackenzie (Nuremberg, Germany).

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  • From joes@21:1/5 to All on Sun Oct 6 16:07:17 2024
    XPost: de.sci.mathematik

    Am Sun, 06 Oct 2024 16:15:27 +0200 schrieb WM:
    On 06.10.2024 14:01, joes wrote:
    Am Sun, 06 Oct 2024 12:32:16 +0200 schrieb WM:
    On 06.10.2024 11:49, Moebius wrote:
    Am 06.10.2024 um 10:40 schrieb WM:
    On 06.10.2024 05:35, Moebius wrote:
    Am 05.10.2024 um 22:38 schrieb WM:
    On 05.10.2024 22:13, Moebius wrote:
    Am 05.10.2024 um 22:01 schrieb WM:

    ω/2 * 2 e IN,
    Nein.
    Doch, weil IN gegenüber der Multiplikation ABGESCHLOSSEN ist. (Das >>>>>> kannst Du sogar in deinem Bestseller nachlesen, falls Du es
    inzwischen vergessen haben solltest.) Mit ω/2 e IN wäre auch ω/2 * >>>>>> 2 e IN (weil 2 e IN ist).
    Das gilt für
    die Menge IN (und deren Elemente), wie schon gesagt.
    In Zeichen: An,m e IN: n * m e IN.
    Komisch auch, dass ω/2*2 (ist die Reihenfolge wichtig?)
    Nein.
    Interessant. ω*2 /2 ist ja eindeutig unendlich, aber ω/2 *2 nicht?

    nicht in N ist, obwohl ω/2 es ja sein soll.

    Ist auch so. Siehe hier:

    {1, 2, 3, ..., ω}*2 = {2, 4, 6, ..., ω*2} mit ω oder ω+1
    mittendrin.

    Wenn Du es sagst Leider kann man sich in der Mathematik /die
    Ergebnisse/ nicht aussuchen.
    Aber man kann die offensichtlich falschen zurückweisen. Dazu gehört,
    dass bei Multiplikation mit 2 die Realität der Menge halbiert wird.
    Korrektheit hat nichts mit Ästhetik zu tun.
    Was ist diese „Realität”?
    Realität ist, dass es mehr ganze als gerade Zahlen gibt, weil jede
    gerade ganz, aber nicht jede ganze gerade ist.
    Das nennt man Teilmenge.

    Dass G zu N gleichmächtig ist, mit der Bijektion n->2n?
    Ist Unsinn.

    es bleiben nach wie vor |ℕ| Zahlen,
    DAS ist wiederum richtig! :-)
    Hint: card(IN) = card(G).
    Das wiederum gilt nur für das potentiell Unendliche. Im aktual
    Unendlichen ist Card Unsinn.
    Und doch hast du keine Alternative geboten
    Doch, s. unten.

    (außer, dass jede Menge ihre eigene Kardinalität hätte).
    Das ist doch auch richtig (wobei man besser von Anzahl sprechen sollte).

    Not all infinite sets can be compared by size, but we can establish some useful rules.
    Schwach.

     The rule of subset proves that every proper subset has fewer elements than its superset. So there are more natural numbers than prime numbers,
    |N| > |P|, and more complex numbers than real numbers, |C| > |R|. Even finitely many exceptions from the subset-relation are admitted for
    infinite subsets. Therefore there are more odd numbers than prime
    numbers |O| > |P|.

     The rule of construction yields the numbers of integers |Z| = 2|N| +
    1
    and the number of fractions |Q| = 2|N|^2 + 1 (there are fewer rational numbers Q# ). Since all products of rational numbers with an irrational number are irrational, there are many more irrational numbers than
    rational numbers |X| > |Q#|.

     The rule of symmetry yields precisely the same number of real
    geometric points in every interval (n, n+1] and with at most a small
    error same number of odd numbers and of even numbers in every finite
    interval and in the whole real line.
    How small an error? Surely there is one more even number.

    This theory makes the number of natural numbers (and of course of other
    sets too) depending on the numerical representation. The set {1, 11,
    111, ...} of natural numbers has only comparatively few elements.
    Therefore the set of natural numbers in unary or binary notation has
    fewer, in hexadecimal notation more than |N| elements. The set {10, 20,
    30, ...} has |N|/10 elements, but if the zeros are only applied as decoration, this set, like the set {1', 2', 3', ...}, has |N| elements.
    It will be a matter of future research to investigate the effect of
    different numerical systems in detail.
    I don’t understand this argument. What is the cardinality of the set
    {1, 11, 111, …} ? What of {0, 1, 10, 11, 100, …} in binary and decimal? What is a decoration different from?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From Alan Mackenzie@21:1/5 to wolfgang.mueckenheim@tha.de on Sun Oct 6 16:48:22 2024
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 06.10.2024 15:59, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    All unit fractions are separate points on
    the positive real axis, but there are infinitely many for every x > 0.
    That can only hold for definable x, not for all.

    Poppycock! You'll have to do better than that to provide such a
    contradiction.

    It is good enough, but you can't understand.

    I do understand. I understand that what you are writing is not maths.
    I'm trying to explain to you why. I've already proved that there are no "undefinable" natural numbers. So assertions about them can not make any sense.

    Hint: Skilled mathematicians have worked on trying to
    prove the inconsistency of maths, without success.

    What shall that prove? Try to understand.

    It shows that any such results are vanishingly unlikely to be found by non-specialists such as you and I.

    You cannot judge because you don't know that topic ....

    I am a graduate in maths ....

    Here is not discussed what you have studied. Remember, not even infinity
    has been taught. Therefore you cannot judge.

    Having studied maths, it is more likely that I am right.

    .... and as fellow traveler can only parrot the words of matheologians
    who are either too stupid to recognize or too dishonest to confess the
    truth.

    .... and able to understand and follow mathematical argument, and to
    distinguish mathematical notions from pure hogwash. [ Citation
    restored after snipping. ]

    Try only to understand my argument. ∀n ∈ ℕ: 1/n - 1/(n+1) > 0. How can infinitely many unit fractions appear before every x > 0?

    You are getting confused with quantifiers, here. For each such x, there
    is an infinite set of fractions less than x. For different x's that set varies. There is no such infinite set which appears before every x > 0.

    There is no connection between your second sentence and the intended conclusion. There are a lot of argument steps missing.

    What I think your line of argument might be is that there "isn't room"
    for an infinite number of >0 intervals to fit. This simply isn't the
    case. Try adding up these intervals and you will find:
    (1 - 1/2) = 1/2
    (1 - 1/2) + (1/2 - 1/3) = 2/3
    (1 - 1/2) + (1/2 - 1/3) + (1/3 - 1/4) = 3/4
    (1 - 1/2) + (1/2 - 1/3) + (1/3 - 1/4) + (1/4 - 1/5) = 4/5
    ....
    and so on. Any finite sum of these is below 1. The limit of the sum is exactly 1.

    In the same way, the infinite sum of a tail of that sequence can be made
    small enough to be smaller than any x > 0, simply by starting at n = 1/x
    (with appropriate rounding). For example, if x = 0.01, we start the
    sequence at
    (1/100 - 1/101) + (1/101 - 1/102) + ......
    This infinite sum sums to exactly 1/100, hence this infinitude of points
    all fit in below x = 0.01. The argument is the same for any x > 0.

    If these terms had any significance, they would still be taught in
    mathematics degree courses.

    No, the teachers of such courses are too stupid or too dishonest.

    Who do you think you are to accuse others of being stupid or dishonest?

    I know that I have understood that topic better than the stupids.

    Everybody else understands that the "stupids" are very bright indeed, and collectively understand the topic far better than any non-specialist.

    Otherwise, bright students would become aware of them and catch out
    their teachers in inconsistencies.

    They do. But every publishing is intercepted by the leading liars.

    <Sigh> When I was an undergraduate, students published lots of
    magazines, some of them about maths. I'm sure they still do, though they
    are likely to be online these days. The "deceit" you think happens would
    be exposed in these magazines, and thus become known,

    You cannot believe that I am right, therefore you don't wish that I am right, and you try to dismiss my argument.

    Yet you cannot counter my argument, which is based on experience.

    I know you are wrong. Such overbearing censorship that you are picturing
    just doesn't happen. It couldn't happen. Nobody rich enough and
    powerful enough cares enough, or even at all. If "dark numbers" acquired military significance, they might, though.

    Regards, WM

    --
    Alan Mackenzie (Nuremberg, Germany).

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  • From Richard Damon@21:1/5 to All on Sun Oct 6 13:05:22 2024
    On 10/6/24 7:45 AM, WM wrote:
    On 06.10.2024 04:51, Richard Damon wrote:
    On 10/5/24 2:58 PM, WM wrote:


    So why does that say it has a point next to it?

    A point between both could be chosen unless it was dark.

    And that point CAN be found, Given two point x and y,

    They are not given, but dark. Discrete points on the positive axis have
    a minimum.

    Regards, WM


    Then you are just proving yourself to be a liar, as you said you could
    choose them.

    The is not minimum in the set of the postive axis that isn't 0, even if
    you are trying to exclude 0 from the positive axis.

    The unbounded set of x > 0 just has its upper bound not in itself, which
    is why it is called "unbounded"

    The actual points are not "dark" but defined.

    Your "minumum point" in the set just doesn't exist, it isn't even "dark"

    Your "darkness" is just your undefined concept to try to patch up the
    fact that your logic system has totally exploded into smithereens due to
    its contradictions.

    Even your hero Aristotle said your "Actual Infinity" doesn't exist
    because it turns out to be contradictory.

    I guess you are too stupid to even follow ancient ideas that have been superceeded.

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  • From Richard Damon@21:1/5 to All on Sun Oct 6 13:12:48 2024
    On 10/6/24 9:58 AM, WM wrote:
    On 06.10.2024 13:35, joes wrote:

    A point between both could be chosen unless it was dark.
    Many points could even be chosen!

    But ℵo unit fractions and the points between them cannot.

    Regards, WM


    No, you COULD HAVE chosen any of those point, you just didn't.

    Sorry, your inability to do the infinite doesn't make the infinite not infinite.

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  • From Richard Damon@21:1/5 to All on Sun Oct 6 13:11:35 2024
    On 10/6/24 9:42 AM, WM wrote:
    On 06.10.2024 04:51, Richard Damon wrote:
    On 10/5/24 2:58 PM, WM wrote:

    Every point is a finite set.

    The fact that we can keep doing that indefinitely, and never reach a
    point we can't continue, is proof that the concept of "next point"
    doesn't exist

    The concept of point however does exist. Every single point can be found unless it is dark.

    Regards, WM


    And every single point that exists can be found, and that includes every
    point on the "Number Line"

    Your "Darkness" isn't actually a definied concept.

    And, these points are never "next" to each other, because the system are "dense" due to their infinite nature.

    Except the "Unit Fractions" or the "Natural Numbers" those have gaps
    between the elements, with an "accumulation point" at 0 where the Unit Fractions become dense there.

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  • From Richard Damon@21:1/5 to All on Sun Oct 6 13:34:15 2024
    On 10/6/24 7:41 AM, WM wrote:
    On 05.10.2024 23:57, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 05.10.2024 15:57, Alan Mackenzie wrote:

    Yes!  At least, sort of.  My understanding of "doesn't exist" is either
    the concept is not (yet?) developed mathematically, or it leads to
    contradictions.  WM's "dark numbers" certainly fall into the first
    category, and possibly the second, too.

    Definition: A natural number is "named" or "addressed" or "identified"
    or "(individually) defined" or "instantiated" ....

    That's five terms for the same thing.  Four of them (at least) are thus redundant.  It is unmathematical to have such redundancy.

    The vocabulary of my readers is very different. So the c hance of understanding is increased.

    .... if it can be communicated, necessarily by a finite amount of
    information, in the sense of Poincaré, such that sender and receiver
    understand the same and can link it by a finite initial segment (1, 2,
    3, ..., n) of natural numbers to the origin 0.

    This is ridiculous!  It is so far removed from the austere simplicity
    of,
    for example, Peano's axioms as to be thoroughly unmathematical.

    Peano's axioms are invalid fpr large numbers.

    Why?

    That just proves that you are just a stupid liar.


    .... All other natural numbers are called dark natural numbers.  Dark
    numbers are numbers that cannot be chosen as individuals.

    Is "chosen" a sixth redundant word for "named", "addressed", ....?

    Yes, all these words have the same meaning, but not all readers know all words.

    "Chosen as individuals" isn't a mathemtical concept.  This phrase, as it is written, makes it sound like the choice is being made by a conscious individual person, according to something unspecified.  That doesn't belong in mathematics.

    It does not belong to the simple but inconsistent present mathematics.

    Communication can occur
    - by direct description in the unary system like ||||||| or as many
    beeps, raps, or flashes,
    - by a finite initial segment of natural numbers (1, 2, 3, 4, 5, 6, 7),
    - as n-ary representation, for instance binary 111 or decimal 7,
    - by indirect description like "the number of colours of the rainbow",
    - by other words known to sender and receiver like "seven".

    The existence of natural numbers is independent of their
    communication by
    people.

    You are a believer in God having created them?

    Only when a number n is identified we can use it in mathematical
    discourse ....

    This is something you haven't proved.

    Try to use another number.

    Besides, mathematicians routinely use "unidentified" numbers in discourse.  For example "If p is a prime number of the form 4m + 1,
    it is
    the sum of two squares.".  That is a statement about an infinite number of numbers, none of which are "identified".

    It is not a statement about an individual number but about a set, some
    of which can be defined.

    .... and can determine the trichotomy properties of n and of every
    multiple k*n or power n^k or power tower k_^n with respect to every
    identified number k. ℕdef contains all defined natural numbers as
    elements – and nothing else. ℕdef is a potentially infinite set;
    therefore henceforth it will be called a collection.

    All natural numbers are "defined" in your sense of that word.

    No, after every identified number almost all are following, almost all
    of them are dark.


      As a
    proof, we only need note that every non-empty subset of N has a least member.  Suppose there is a non-empty set of "undefined" natural
    numbers.
    Then there is a least such number.

    No. The identified numbers are a potentially infinite collection.
    Therefore there is no least dark number.

    I first came across the terms "potential infinity" and "actual
    infinity"
    on this newsgroup, not in my degree course a few decades ago.

    It is carefully avoided because closer inspection shows contradictions.

    There are no such contradictions.

    There are many. For instance: All unit fractions are separate points on
    the positive real axis, but there are infinitely many for every x > 0.
    That can only hold for definable x, not for all.

    Therefore set theorists use just what they can defend. If actual
    infinity is shown self contradictory (without dark numbers), then they
    evade to potential infinity temporarily which has no completed sets and
    cannot complete bijections.

    Not really.  There is simply no need for "actual" and "potential" infinity.

    You have not learnt about it during study and obviously not afterwards.

    They are relics from the past, from before the time when
    mathematicians understood infinity as they do today.

    You cannot judge because you don't know that topic and as fellow
    traveler can only parrot the words of matheologians who are either too
    stupid to recognize or too dishonest to confess the truth.

    "You use terms like completed versus potential infinity, which are not
    part of the modern vernacular." [P.L. Clark in "Physicists can be
    wrong", tea.MathOverflow (2 Jul 2010)] This is the typical reproach to
    be expected when the different kinds of infinity are analyzed and
    taught.

    Here the difference is clearly stated:
    "Should we briefly characterize the new view of the infinite introduced
    by Cantor, we could certainly say: In analysis we have to deal only
    with
    the infinitely small and the infinitely large as a limit-notion, as
    something becoming, emerging, produced, i.e., as we put it, with the
    potential infinite. But this is not the proper infinite. That we have
    for instance when we consider the entirety of the numbers 1, 2, 3, 4,
    ... itself as a completed unit, or the points of a line as an entirety
    of things which is completely available. That sort of infinity is named
    actual infinite." [D. Hilbert: "Über das Unendliche", Mathematische
    Annalen 95 (1925) p. 167]

    That's from 1925.  It is not a modern understanding of the infinite.

    But a correct one. The modern understanding is pure deceit.

    If these terms had any significance, they would still be taught in mathematics degree courses.
    No, the teachers of such courses are too stupid or too dishonest.

      Otherwise, bright students would become
    aware of them and catch out their teachers in inconsistencies.

    They do. But every publishing is intercepted by the leading liars.

    Regards, WM

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  • From Richard Damon@21:1/5 to All on Sun Oct 6 13:40:26 2024
    On 10/6/24 10:04 AM, WM wrote:
    On 06.10.2024 13:45, joes wrote:
    Am Fri, 04 Oct 2024 22:10:35 +0200 schrieb WM:
    all numbers
    which you can choose have ℵ₀ successors. That is essential, not your >>> "rules".
    Those are the rules of logic, you have to follow them

    I follow the reality of mathematics.

    No, you follow your own stupdity, because you don't understand the
    actual realityh of mathematics.


      > What do you mean with the successor of a collection anyway?

    Beyond the collection there are ℵo elements that cannot be reached individually.

    Regards, WM

    So, what actual element that the system creates can not be reached individually?

    The only "dark" values seem to be values that don't actually exist, but
    you want to exist to prove your ideas, so you assume they do.

    Things like the smallest real/rational number greater than zero.

    No such number exists, as any x that might be it, has another x/2
    between it and zero, thus it wasn't the smallest, and what ever method
    you had to generate x, could have also generated x/2, so they are
    equally determinable.

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  • From Richard Damon@21:1/5 to All on Sun Oct 6 13:19:18 2024
    On 10/6/24 9:52 AM, WM wrote:
    On 06.10.2024 12:16, Alan Mackenzie wrote:


    You mean, that there is a difference?  I remain unconvinced.

    "Numerals constitute a potential infinity. Given any numeral, we can construct a new numeral by prefixing it with S. Now imagine this
    potential infinity to be completed. Imagine the inexhaustible process of constructing numerals somehow to have been finished, and call the result
    the set of all numbers, denoted by . Thus  is thought to be an actual infinity or a completed infinity. This is curious terminology, since the etymology of 'infinite' is 'not finished'." [E. Nelson: "Hilbert's
    mistake" (2007) p. 3]

    "A potential infinity is a quantity which is finite but indefinitely
    large. For instance, when we enumerate the natural numbers as 0, 1,
    2, ..., n, n+1, ..., the enumeration is finite at any point in time, but
    it grows indefinitely and without bound. [...] An actual infinity is a completed infinite totality. Examples: , , C[0, 1], L2[0, 1], etc. Other examples: gods, devils, etc." [S.G. Simpson: "Potential versus
    actual infinity: Insights from reverse mathematics" (2015)]

    "Potential infinity refers to a procedure that gets closer and closer
    to, but never quite reaches, an infinite end. For instance, the sequence
    of numbers 1, 2, 3, 4, ... gets higher and higher, but it has no end; it never gets to infinity. Infinity is just an indication of a direction – it's 'somewhere off in the distance'. Chasing this kind of infinity is
    like chasing a rainbow or trying to sail to the edge of the world – you
    may think you see it in the distance, but when you get to where you
    thought it was, you see it is still further away. Geometrically, imagine
    an infinitely long straight line; then 'infinity' is off at the 'end' of
    the line. Analogous procedures are given by limits in calculus, whether
    they use infinity or not. For example, limx0(sinx)/x = 1. This means
    that when we choose values of x that are closer and closer to zero, but
    never quite equal to zero, then (sinx)/x gets closer and closer to one.
        Completed infinity, or actual infinity, is an infinity that one actually reaches; the process is already done. For instance, let's put
    braces around that sequence mentioned earlier: {1, 2, 3, 4, ...}. With
    this notation, we are indicating the set of all positive integers. This
    is just one object, a set. But that set has infinitely many members. By
    that I don't mean that it has a large finite number of members and it
    keeps getting more members. Rather, I mean that it already has
    infinitely many members.
        We can also indicate the completed infinity geometrically. For instance, the diagram at right shows a one-to-one correspondence between points on an infinitely long line and points on a semicircle. There are
    no points for plus or minus infinity on the line, but it is natural to
    attach those 'numbers' to the endpoints of the semicircle.
        Isn't that 'cheating', to simply add numbers in this fashion? Not really; it just depends on what we want to use those numbers for. For instance, f(x) = 1/(1 + x2) is a continuous function defined for all
    real numbers x, and it also tends to a limit of 0 when x 'goes to' plus
    or minus infinity (in the sense of potential infinity, described
    earlier). Consequently, if we add those two 'numbers' to the real line,
    to get the so-called 'extended real line', and we equip that set with
    the same topology as that of the closed semicircle (i.e., the semicircle including the endpoints), then the function f is continuous everywhere
    on the extended real line." [E. Schechter: "Potential versus completed infinity: Its history and controversy" (5 Dec 2009)]

    Regards, WM


    And the problem with your "Actual Infinity" is since it requires that an infinite amount of "work" was done to create it, only an actually
    infinite being can experience it.

    Such a being would understand the nature of such a set, and not presume
    it acts like the finite sets that we finite beings can observe.

    So, your logic is based on trying to use an intuition about something
    that is impossible for you to experience, which just blows up your mind
    to smithereens by the contradiction you create in it.

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  • From Richard Damon@21:1/5 to All on Sun Oct 6 13:26:05 2024
    On 10/6/24 11:26 AM, WM wrote:
    On 06.10.2024 16:52, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    "A potential infinity is a quantity which is finite but indefinitely
    large. For instance, when we enumerate the natural numbers as 0, 1, 2,
    ..., n, n+1, ..., the enumeration is finite at any point in time, ....

    That is a mistake.  The ellipses indicate the enumeration.  There is no
    time.  If one must consider time, then the enumeration happens
    instantaneously.

    In potential infinity there is time or at least a sequence of steps.

    This idea of time may be what misleads the mathematically less adept
    into believing that 0.999... < 1.

    That is true even in actual infinity.
    We can add 9 to 0.999...999 to obtain 9.999...999. But multiplying 0.999...999 by 10 or, what is the same, shifting the digits 9 by one
    step to the left-hand side, does not increase their number but leaves it constant: 9.99...9990.

    But that says that your "actually infinite" wasn't actually infinite,
    and thus you put yourself into a contradiction.


    10*0.999...999 = 9.99...9990 = 9 + 0.99...9990 < 9 + 0.999...999
      9*0.999...999 < 9 as it should be.

    Just proving that your "infinite" series wasn't actually infinte.

    But then, you, being finite, can have "actual infinity" since it is
    beyond you.


    .... but it grows indefinitely and without bound. [...] An actual
    infinity is a completed infinite totality. Examples: , , C[0, 1],
    L2[0, 1], etc.  Other examples: gods, devils, etc." [S.G. Simpson:
    "Potential versus actual infinity: Insights from reverse mathematics"
    (2015)]

    "Potential infinity refers to a procedure that gets closer and closer
    to, but never quite reaches, an infinite end. For instance, the sequence >>> of numbers 1, 2, 3, 4, ... gets higher and higher, but it has no end; it >>> never gets to infinity. Infinity is just an indication of a direction – >>> it's 'somewhere off in the distance'. Chasing this kind of infinity is
    like chasing a rainbow or trying to sail to the edge of the world – you >>> may think you see it in the distance, but when you get to where you
    thought it was, you see it is still further away. Geometrically, imagine >>> an infinitely long straight line; then 'infinity' is off at the 'end' of >>> the line. Analogous procedures are given by limits in calculus, whether
    they use infinity or not. For example, limx0(sinx)/x = 1. This means
    that when we choose values of x that are closer and closer to zero, but
    never quite equal to zero, then (sinx)/x gets closer and closer to one.
            Completed infinity, or actual infinity, is an infinity that one
    actually reaches; the process is already done. For instance, let's put
    braces around that sequence mentioned earlier: {1, 2, 3, 4, ...}. With
    this notation, we are indicating the set of all positive integers. This
    is just one object, a set. But that set has infinitely many members. By
    that I don't mean that it has a large finite number of members and it
    keeps getting more members. Rather, I mean that it already has
    infinitely many members.
            We can also indicate the completed infinity geometrically. For
    instance, the diagram at right shows a one-to-one correspondence between >>> points on an infinitely long line and points on a semicircle. There are
    no points for plus or minus infinity on the line, but it is natural to
    attach those 'numbers' to the endpoints of the semicircle.
            Isn't that 'cheating', to simply add numbers in this fashion?
    Not
    really; it just depends on what we want to use those numbers for. For
    instance, f(x) = 1/(1 + x2) is a continuous function defined for all
    real numbers x, and it also tends to a limit of 0 when x 'goes to' plus
    or minus infinity (in the sense of potential infinity, described
    earlier). Consequently, if we add those two 'numbers' to the real line,
    to get the so-called 'extended real line', and we equip that set with
    the same topology as that of the closed semicircle (i.e., the semicircle >>> including the endpoints), then the function f is continuous everywhere
    on the extended real line." [E. Schechter: "Potential versus completed
    infinity: Its history and controversy" (5 Dec 2009)]

    The above is all very poetic, this supposed difference between "actual"
    and "potential" infinite, but it is not mathematical.  There are no
    mathematical theorems which depend for their theoremhood on the supposed
    distinction between "actual" and "potential" infinite.

    Set theory depends on actual infinity. Bijections must be complete. But Cantor's bijections never are complete. Cantor's list must be completely enumerated by natural numbers. The diagonal number must be complete such
    that no digit is missing in order to be distinct from every listed real number. Impossible. All that is nonsense.

    Regards, WM


    Nope, Set Theory can work on potential infinity. Induction allows us to
    see that an infinite series WILL complete in infinity but only needing
    us to do finite work to know it.

    Induction doesn't create "here" an actually infinite thing, just lets us
    know that the thing is actually generatable with the infinite work.

    Set Theory and Mathematics can live with that "potential" infinity.

    Your problem seems to be that you don't understand how induction works,
    because your mind is stuck in finite logic that blew itself up when put
    to infinite work.

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  • From Richard Damon@21:1/5 to All on Sun Oct 6 13:44:39 2024
    On 10/6/24 9:46 AM, WM wrote:
    On 06.10.2024 05:35, Richard Damon wrote:

    ANY finite value above 0 will have Aleph_0 unit fractions below it.

    Impossible. Among them there must be a first. But they cannot be seen.
    They are dark.

    No, it is in your stupid fantasy that there must be a first, in truth
    there is no such thing.
    It isn't that they can not be seen, it is that they do not exist, and to
    claim they do just proves you to be an ignorant liar.


    Your math and logic just can't handle that fact, because

    it is nonsense. Every point is a singleton, a finite set. Every point
    that is not dark can be seen.

    Regards, WM


    Yes, every point is a singleton, and EVERY point that exist can be seen,
    there is no "Darkness" in the definitions, just in your broken brain.

    But that doesn't mean one of the points need to be the "first" of the
    unbounded end.

    Your brain is where the nonsense is because you have blown your
    intelegence and common sense to smithereens by inflicting on it the contradictions of your incorrect logic.

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Sun Oct 6 13:15:59 2024
    On 10/6/24 7:46 AM, WM wrote:
    On 06.10.2024 04:57, Richard Damon wrote:
    On 10/5/24 3:04 PM, WM wrote:
    On 05.10.2024 15:32, Richard Damon wrote:
    On 10/5/24 8:18 AM, WM wrote:
    On 05.10.2024 13:12, Richard Damon wrote:


    But actual infinity doesn't exist.

    How can bijections between infinite sets exist then.

    Because the sets exist as what you think of as "potential" infinity,

    "the integers separately as well as in their actually infinite
    totality exist as eternal ideas in intellectu Divino in the highest
    degree of reality." [G. Cantor, letter to C. Hermite (30 Nov 1895)]

    but that isn't what your "actual infinity" is, that is just protential
    infinity.

    No.

    Regards, WM


    Then you don't know what you are talking about.

    Until you can actually PROVE that you know something, it doesn't make
    sense to try to reason about what an infinite intelect could understand.

    Your don't seem to even have a finite intelect about infinite sets.

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  • From Moebius@21:1/5 to All on Mon Oct 7 00:06:44 2024
    Am 06.10.2024 um 18:48 schrieb Alan Mackenzie:
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 06.10.2024 15:59, Alan Mackenzie wrote:

    Who do you think you are to accuse others of being stupid or dishonest?

    I know that I have understood that topic better than the stupids. [WM]

    Everybody else understands that the "stupids" are very bright indeed, and collectively understand the topic far better than any non-specialist.

    And especially far better than a psychotic asshole full of shit.

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  • From joes@21:1/5 to All on Mon Oct 7 08:05:10 2024
    Am Mon, 07 Oct 2024 09:41:23 +0200 schrieb WM:
    On 06.10.2024 17:48, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    This idea of time may be what misleads the mathematically less adept
    into believing that 0.999... < 1.
    We can add 9 to 0.999...999 to obtain 9.999...999. But multiplying
    0.999...999 by 10 or, what is the same, shifting the digits 9 by one
    step to the left-hand side, does not increase their number but leaves
    it constant: 9.99...9990.
    Totally irrelevant to my point. I was talking about the unbounded
    sequence 0.999.... You have replied about a bounded finite sequence of
    9's.
    No, even an unbounded sequence does not get longer when shifted by one
    step.
    Nor does it get shorter, it stays infinite.

    Set theory depends on actual infinity.
    How would it go wrong if there were merely potential infinity?
    Bijection means completeness. Potential infinity is never complete. But potential infinity is used in fact, best seen with Hilbert's hotel or
    mapping of natural numbers on even natural numbers. It is the reason why
    all countable sets are countable. I actual infinity there are more
    natural numbers than even natural numbers.
    Bijection is not about completeness, countability is. Of course stopping
    after a finite number, which potential infinity seems to mean, is not „complete” in that sense. Hilbert’s Hotel is actually infinite, it already holds infinite guests. All of them can at once move to the next
    room, no need to do it stepwise (couldn’t you start with the „last”?).

    Bijections must be complete.
    The word "complete" is misleading when talking about infinite things.
    No. Completeness is required. Cantor claims it: "The infinite sequence
    thus defined has the peculiar property to contain the positive rational numbers completely, and each of them only once at a determined place."
    [G. Cantor, letter to R. Lipschitz (19 Nov 1883)]
    Then you are talking about actual infinity.

    But Cantor's bijections never are complete. Cantor's list must be
    completely enumerated by natural numbers. The diagonal number must be
    complete such that no digit is missing in order to be distinct from
    every listed real number. Impossible. All that is nonsense.
    Yes I agree with that last sentiment. Talking about "completely" with
    regard to infinite sets is nonsense.
    Then bijections are impossible.
    *between infinite sets, for you

    It isn't even clear what you mean by saying the diagonal number must be
    "complete". It's generated by an infinite process, but remember
    there's no time involved. It just is.
    If it is never complete, then always more is following and the diagonal number is never excluded from the list.
    It is completely infinite.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From WM@21:1/5 to Alan Mackenzie on Mon Oct 7 09:41:23 2024
    On 06.10.2024 17:48, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    This idea of time may be what misleads the mathematically less adept
    into believing that 0.999... < 1.

    That is true even in actual infinity.
    We can add 9 to 0.999...999 to obtain 9.999...999. But multiplying
    0.999...999 by 10 or, what is the same, shifting the digits 9 by one
    step to the left-hand side, does not increase their number but leaves it
    constant: 9.99...9990.

    Totally irrelevant to my point. I was talking about the unbounded
    sequence 0.999.... You have replied about a bounded finite sequence of
    9's.

    No, even an unbounded sequence does not get longer when shifted by one step.

    Again, totally missing the point.

    You don't understand that actual infinity is a fixed quantity.

    Set theory depends on actual infinity.

    How would it go wrong if there were merely potential infinity?

    Bijection means completeness. Potential infinity is never complete. But potential infinity is used in fact, best seen with Hilbert's hotel or
    mapping of natural numbers on even natural numbers. It is the reason why
    all countable sets are countable. I actual infinity there are more
    natural numbers than even natural numbers.

    Bijections must be complete.

    The word "complete" is misleading when talking about infinite things.

    No. Completeness is required. Cantor claims it: "The infinite sequence
    thus defined has the peculiar property to contain the positive rational
    numbers completely, and each of them only once at a determined place."
    [G. Cantor, letter to R. Lipschitz (19 Nov 1883)]

    Bijections are just as complete with "potential infinity" as with "actual infinity".

    No, that is wrong.

    But Cantor's bijections never are complete. Cantor's list must be
    completely enumerated by natural numbers. The diagonal number must be
    complete such that no digit is missing in order to be distinct from
    every listed real number. Impossible. All that is nonsense.

    Yes I agree with that last sentiment. Talking about "completely" with
    regard to infinite sets is nonsense.

    Then bijections are impossible.

    It isn't even clear what you mean
    by saying the diagonal number must be "complete". It's generated by an infinite process, but remember there's no time involved. It just is.

    If it is never complete, then always more is following and the diagonal
    number is never excluded from the list.

    Regards, WM

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  • From WM@21:1/5 to joes on Mon Oct 7 10:13:21 2024
    On 06.10.2024 17:55, joes wrote:
    Am Sun, 06 Oct 2024 17:26:07 +0200 schrieb WM:
    On 06.10.2024 16:52, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    "A potential infinity is a quantity which is finite but indefinitely
    large. For instance, when we enumerate the natural numbers as 0, 1, 2, >>>> ..., n, n+1, ..., the enumeration is finite at any point in time, ....
    That is a mistake. The ellipses indicate the enumeration. There is no
    time. If one must consider time, then the enumeration happens
    instantaneously.
    In potential infinity there is time or at least a sequence of steps.

    This idea of time may be what misleads the mathematically less adept
    into believing that 0.999... < 1.
    That is true even in actual infinity.
    We can add 9 to 0.999...999 to obtain 9.999...999. But multiplying
    0.999...999 by 10 or, what is the same, shifting the digits 9 by one
    step to the left-hand side, does not increase their number but leaves it
    constant: 9.99...9990.
    10*0.999...999 = 9.99...9990 = 9 + 0.99...9990 < 9 + 0.999...999 ==>
    9*0.999...999 < 9 as it should be.
    In actual infinity, there is no last 9 (that would not be infinite).

    Actual means all, but not more. This implies a last before ω. The
    infinity means an end cannot be determined. It is produced by the dark
    numbers.

    Regards, WM

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  • From WM@21:1/5 to Moebius on Mon Oct 7 10:38:16 2024
    On 06.10.2024 18:14, Moebius wrote:
    Am 06.10.2024 um 17:48 schrieb Alan Mackenzie:

    It's generated by an infinite process

    No, it isn't.

    That is potential infiity.

    It just is.
    Right.

    And therefore the number of elements or digits does not increase by
    changing the positions.

    Regards, WM

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  • From WM@21:1/5 to FromTheRafters on Mon Oct 7 10:50:19 2024
    On 06.10.2024 19:03, FromTheRafters wrote:
    A set is a collection of well-defined objects,
    meaning we must be able to determine if an element belongs to a
    particulr set.

    But you can't determine the smallest unit fraction although it is a
    singleton set, a point on the real axis.

    Regards, WM

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  • From WM@21:1/5 to Alan Mackenzie on Mon Oct 7 10:47:25 2024
    On 06.10.2024 18:48, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 06.10.2024 15:59, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    All unit fractions are separate points on
    the positive real axis, but there are infinitely many for every x > 0. >>>> That can only hold for definable x, not for all.

    Poppycock! You'll have to do better than that to provide such a
    contradiction.

    It is good enough, but you can't understand.

    I do understand. I understand that what you are writing is not maths.
    I'm trying to explain to you why. I've already proved that there are no "undefinable" natural numbers. So assertions about them can not make any sense.

    You have not understood that all unit fractions are separate points on
    the positive axis. Every point is a singleton set and could be seen as
    such, but it cannot. Hence it is dark.

    Hint: Skilled mathematicians have worked on trying to
    prove the inconsistency of maths, without success.

    What shall that prove? Try to understand.

    It shows that any such results are vanishingly unlikely to be found by non-specialists such as you and I.

    Unlikely is not impossible.
    Try only to understand my argument. ∀n ∈ ℕ: 1/n - 1/(n+1) > 0. How can >> infinitely many unit fractions appear before every x > 0?

    You are getting confused with quantifiers, here. For each such x, there
    is an infinite set of fractions less than x. For different x's that set varies. There is no such infinite set which appears before every x > 0.

    The set varies but infinitely many elements remain the same. A shrinking infinite set which remains infinite has an infinite core.

    Regards, WM

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  • From WM@21:1/5 to joes on Mon Oct 7 10:23:14 2024
    On 06.10.2024 18:07, joes wrote:
    Am Sun, 06 Oct 2024 16:15:27 +0200 schrieb WM:
    On 06.10.2024 14:01, joes wrote:
    Am Sun, 06 Oct 2024 12:32:16 +0200 schrieb WM:
    On 06.10.2024 11:49, Moebius wrote:
    Am 06.10.2024 um 10:40 schrieb WM:
    On 06.10.2024 05:35, Moebius wrote:
    Am 05.10.2024 um 22:38 schrieb WM:
    On 05.10.2024 22:13, Moebius wrote:
    Am 05.10.2024 um 22:01 schrieb WM:

    ω/2 * 2 e IN,
    Nein.
    Doch, weil IN gegenüber der Multiplikation ABGESCHLOSSEN ist. (Das >>>>>>> kannst Du sogar in deinem Bestseller nachlesen, falls Du es
    inzwischen vergessen haben solltest.) Mit ω/2 e IN wäre auch ω/2 * >>>>>>> 2 e IN (weil 2 e IN ist).
    Das gilt für
    die Menge IN (und deren Elemente), wie schon gesagt.
    In Zeichen: An,m e IN: n * m e IN.
    Komisch auch, dass ω/2*2 (ist die Reihenfolge wichtig?)
    Nein.
    Interessant. ω*2 /2 ist ja eindeutig unendlich, aber ω/2 *2 nicht?

    ω*2 /2 = ω = ω/2 *2

    Not all infinite sets can be compared by size, but we can establish some
    useful rules.
    Schwach.

     The rule of subset proves that every proper subset has fewer elements
    than its superset. So there are more natural numbers than prime numbers,
    |N| > |P|, and more complex numbers than real numbers, |C| > |R|. Even
    finitely many exceptions from the subset-relation are admitted for
    infinite subsets. Therefore there are more odd numbers than prime
    numbers |O| > |P|.

     The rule of construction yields the numbers of integers |Z| = 2|N| +
    1
    and the number of fractions |Q| = 2|N|^2 + 1 (there are fewer rational
    numbers Q# ). Since all products of rational numbers with an irrational
    number are irrational, there are many more irrational numbers than
    rational numbers |X| > |Q#|.

     The rule of symmetry yields precisely the same number of real
    geometric points in every interval (n, n+1] and with at most a small
    error same number of odd numbers and of even numbers in every finite
    interval and in the whole real line.
    How small an error? Surely there is one more even number.

    [3, 5] has one more odd number.

    This theory makes the number of natural numbers (and of course of other
    sets too) depending on the numerical representation. The set {1, 11,
    111, ...} of natural numbers has only comparatively few elements.
    Therefore the set of natural numbers in unary or binary notation has
    fewer, in hexadecimal notation more than |N| elements. The set {10, 20,
    30, ...} has |N|/10 elements, but if the zeros are only applied as
    decoration, this set, like the set {1', 2', 3', ...}, has |N| elements.
    It will be a matter of future research to investigate the effect of
    different numerical systems in detail.
    I don’t understand this argument. What is the cardinality of the set
    {1, 11, 111, …} ? What of {0, 1, 10, 11, 100, …} in binary and decimal? What is a decoration different from?

    It is a symbol added to a number but not belonging to the numeral.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Mon Oct 7 10:53:52 2024
    On 06.10.2024 19:05, Richard Damon wrote:
    On 10/6/24 7:45 AM, WM wrote:
    On 06.10.2024 04:51, Richard Damon wrote:
    On 10/5/24 2:58 PM, WM wrote:


    So why does that say it has a point next to it?

    A point between both could be chosen unless it was dark.

    And that point CAN be found, Given two point x and y,

    They are not given, but dark. Discrete points on the positive axis
    have a minimum.

    Then you are just proving yourself to be a liar, as you said you could
    choose them.

    I said: a point between both could be chosen unless it was dark!

    The actual points are not "dark" but defined.

    All unit fractios are such points. Each one is a singleton adhering to
    the rules of geometry. Therefore each one including the smallest oe
    could be found unless it was dark.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Mon Oct 7 10:56:05 2024
    On 06.10.2024 19:11, Richard Damon wrote:
    On 10/6/24 9:42 AM, WM wrote:
    On 06.10.2024 04:51, Richard Damon wrote:
    On 10/5/24 2:58 PM, WM wrote:

    Every point is a finite set.

    The fact that we can keep doing that indefinitely, and never reach a
    point we can't continue, is proof that the concept of "next point"
    doesn't exist

    The concept of point however does exist. Every single point can be
    found unless it is dark.

    And every single point that exists can be found, and that includes every point on the "Number Line"

    Find the smallest unit fraction.
    Except the "Unit Fractions" or the "Natural Numbers" those have gaps
    between the elements, with an "accumulation point" at 0 where the Unit Fractions become dense there.

    No. They nowhere become dense: ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 .

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Mon Oct 7 11:00:17 2024
    On 06.10.2024 19:26, Richard Damon wrote:

    Nope, Set Theory can work on potential infinity.

    "Should we briefly characterize the new view of the infinite introduced
    by Cantor, we could certainly say: In analysis we have to deal only with
    the infinitely small and the infinitely large as a limit-notion, as
    something becoming, emerging, produced, i.e., as we put it, with the
    potential infinite. But this is not the proper infinite. That we have
    for instance when we consider the entirety of the numbers 1, 2, 3, 4,
    ... itself as a completed unit, or the points of a line as an entirety
    of things which is completely available. That sort of infinity is named
    actual infinite." [D. Hilbert: "Über das Unendliche", Mathematische
    Annalen 95 (1925) p. 167]

    Regards, WM

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  • From WM@21:1/5 to joes on Mon Oct 7 11:08:33 2024
    On 07.10.2024 10:05, joes wrote:
    Am Mon, 07 Oct 2024 09:41:23 +0200 schrieb WM:
    On 06.10.2024 17:48, Alan Mackenzie wrote:
    even an unbounded sequence does not get longer when shifted by one
    step.
    Nor does it get shorter, it stays infinite.

    It keeps all its elements but not more.

    Bijection is not about completeness, countability is.

    Bijective means injective and surjective.

    Of course stopping
    after a finite number, which potential infinity seems to mean, is not „complete” in that sense. Hilbert’s Hotel is actually infinite, it already holds infinite guests.

    Name them by all the natural numbers. Then no further guest can appear.

    All of them can at once move to the next
    room,

    All rooms are enumerated by all the natural numbers. Hence there is no
    chance to move. Only in potential infinity there is.

    Regards, WM

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  • From WM@21:1/5 to FromTheRafters on Mon Oct 7 11:51:43 2024
    On 07.10.2024 11:36, FromTheRafters wrote:
    WM formulated the question :
    On 06.10.2024 19:03, FromTheRafters wrote:
    A set is a collection of well-defined objects, meaning we must be
    able to determine if an element belongs to a particulr set.

    But you can't determine the smallest unit fraction although it is a
    singleton set, a point on the real axis.

    There is no smallest unit fraction.

    If there are only fixed points, then there is a point such that between
    it and zero there is no further point.

    Regards, WM

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  • From WM@21:1/5 to FromTheRafters on Mon Oct 7 11:56:25 2024
    On 07.10.2024 11:38, FromTheRafters wrote:
    WM wrote :
    On 06.10.2024 18:48, Alan Mackenzie wrote:

    You are getting confused with quantifiers, here.  For each such x, there >>> is an infinite set of fractions less than x.  For different x's that set >>> varies.  There is no such infinite set which appears before every x > 0. >>
    The set varies but infinitely many elements remain the same. A
    shrinking infinite set which remains infinite has an infinite core.

    Wow, your shrinking sets again? Sets don't change.

    There is a set-function, a set of sets. Every x that is closer to zero
    makes the set smaller, but never finite. Therefore the argument that the
    set varies but does not keep the same infinite core is stupid.

    Regards, WM

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  • From joes@21:1/5 to All on Mon Oct 7 11:06:01 2024
    Am Mon, 07 Oct 2024 10:56:05 +0200 schrieb WM:
    On 06.10.2024 19:11, Richard Damon wrote:
    On 10/6/24 9:42 AM, WM wrote:
    On 06.10.2024 04:51, Richard Damon wrote:
    On 10/5/24 2:58 PM, WM wrote:

    Every point is a finite set.
    The fact that we can keep doing that indefinitely, and never reach a
    point we can't continue, is proof that the concept of "next point"
    doesn't exist
    The concept of point however does exist. Every single point can be
    found unless it is dark.
    And every single point that exists can be found, and that includes
    every point on the "Number Line"
    Find the smallest unit fraction.
    „that exists”

    Except the "Unit Fractions" or the "Natural Numbers" those have gaps
    between the elements, with an "accumulation point" at 0 where the Unit
    Fractions become dense there.
    No. They nowhere become dense: ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 .
    That is not the meaning of „dense”.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to All on Mon Oct 7 11:13:15 2024
    Am Mon, 07 Oct 2024 10:13:21 +0200 schrieb WM:
    On 06.10.2024 17:55, joes wrote:
    Am Sun, 06 Oct 2024 17:26:07 +0200 schrieb WM:
    On 06.10.2024 16:52, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    This idea of time may be what misleads the mathematically less adept
    into believing that 0.999... < 1.
    That is true even in actual infinity.
    We can add 9 to 0.999...999 to obtain 9.999...999. But multiplying
    0.999...999 by 10 or, what is the same, shifting the digits 9 by one
    step to the left-hand side, does not increase their number but leaves
    it constant: 9.99...9990.
    10*0.999...999 = 9.99...9990 = 9 + 0.99...9990 < 9 + 0.999...999 ==>
    9*0.999...999 < 9 as it should be.
    In actual infinity, there is no last 9 (that would not be infinite).
    Actual means all, but not more. This implies a last before ω. The
    infinity means an end cannot be determined. It is produced by the dark numbers.
    Actually infinite means infinite, which doesn’t change when you add or subtract a finite number.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From Richard Damon@21:1/5 to All on Mon Oct 7 07:12:24 2024
    On 10/7/24 4:56 AM, WM wrote:
    On 06.10.2024 19:11, Richard Damon wrote:
    On 10/6/24 9:42 AM, WM wrote:
    On 06.10.2024 04:51, Richard Damon wrote:
    On 10/5/24 2:58 PM, WM wrote:

    Every point is a finite set.

    The fact that we can keep doing that indefinitely, and never reach a
    point we can't continue, is proof that the concept of "next point"
    doesn't exist

    The concept of point however does exist. Every single point can be
    found unless it is dark.

    And every single point that exists can be found, and that includes
    every point on the "Number Line"

    Find the smallest unit fraction.

    A concept that doesn't exist.


    Except the "Unit Fractions" or the "Natural Numbers" those have gaps
    between the elements, with an "accumulation point" at 0 where the Unit
    Fractions become dense there.

    No. They nowhere become dense: ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 .


    So, what is the maximum density of unit fractions?

    The fact that 1/n - 1/(n+1) > 0 just means that 1/n > 1/(n+1) and thus
    there is always a unit fraction smaller than the one you have.

    The is no lower limit to the value of 1/n - 1/(n+1) except 0, so by
    going far enough we can find two unit fractions as close to each other
    as we want, and there will always be an infinite set smaller than that.

    Dense doesn't mean points on top of each other, but that there is always
    a point in between.

    The fact that you don't understand this, is why you keep getting the
    wrong answers because you brain has been exploded to smithereens by the contradictions in your logic.

    Regards, WM


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  • From Richard Damon@21:1/5 to All on Mon Oct 7 07:08:07 2024
    On 10/7/24 4:53 AM, WM wrote:
    On 06.10.2024 19:05, Richard Damon wrote:
    On 10/6/24 7:45 AM, WM wrote:
    On 06.10.2024 04:51, Richard Damon wrote:
    On 10/5/24 2:58 PM, WM wrote:


    So why does that say it has a point next to it?

    A point between both could be chosen unless it was dark.

    And that point CAN be found, Given two point x and y,

    They are not given, but dark. Discrete points on the positive axis
    have a minimum.

    Then you are just proving yourself to be a liar, as you said you could
    choose them.

    I said: a point between both could be chosen unless it was dark!

    But there is a non-dark point between them, so they are not "next to"
    each other.


    The actual points are not "dark" but defined.

    All unit fractios are such points. Each one is a singleton adhering to
    the rules of geometry. Therefore each one including the smallest oe
    could be found unless it was dark.


    Nope, the problem is you "rule of geometry" that there must be a
    smallest (that isn't 0) doesn't actually exist.

    Note, "Geometry" says nothing about "adjacent points", In fact, one
    property of Geometry is that ANY straight line segement can be divided
    into two smaller and equal lines. Since we can draw such a line between
    ANY two points, there can not be two points "next to" each other with no
    points between them.

    Geometry is based on a generative concept of infinity, like your
    potential infinity, not your non-existent "actual infinity" which turns
    out to not be actually infinite if you can use it, as we can't get to
    the end of the infinite generative phase needed to make it.

    Regards, WM

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  • From Richard Damon@21:1/5 to All on Mon Oct 7 07:14:16 2024
    On 10/7/24 4:38 AM, WM wrote:
    On 06.10.2024 18:14, Moebius wrote:
    Am 06.10.2024 um 17:48 schrieb Alan Mackenzie:

    It's generated by an infinite process

    No, it isn't.

    That is potential infiity.

    It just is.
    Right.

    And therefore the number of elements or digits does not increase by
    changing the positions.

    Regards, WM

    Because they are unending, and thus there is no space to put that 0.

    Once you find a 'spot' to put the 0 in, you have limited the number to
    only a finite number of digits, and thus proved yourself a liar.

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  • From Alan Mackenzie@21:1/5 to wolfgang.mueckenheim@tha.de on Mon Oct 7 12:11:07 2024
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 06.10.2024 18:48, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 06.10.2024 15:59, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    All unit fractions are separate points on
    the positive real axis, but there are infinitely many for every x > 0. >>>>> That can only hold for definable x, not for all.

    Poppycock! You'll have to do better than that to provide such a
    contradiction.

    It is good enough, but you can't understand.

    I do understand. I understand that what you are writing is not maths.
    I'm trying to explain to you why. I've already proved that there are no
    "undefinable" natural numbers. So assertions about them can not make any
    sense.

    You have not understood that all unit fractions are separate points on
    the positive axis.

    I understand that full well. I have a reasonable grasp of point set
    topology. You don't.

    Every point is a singleton set and could be seen as such, but it
    cannot. Hence it is dark.

    That's a complete non-sequitur. In fact, it's gobbledegook. Points
    aren't sets. What "it cannot" refers to is more than unclear. The same applies to the "it" in "it is dark".

    "Dark" would appear to be a seventh synonym for (the negative of)
    "defined" ....

    Hint: Skilled mathematicians have worked on trying to
    prove the inconsistency of maths, without success.

    What shall that prove? Try to understand.

    It shows that any such results are vanishingly unlikely to be found by
    non-specialists such as you and I.

    Unlikely is not impossible.

    As near impossible as can be without actually being there. You cannot
    prove the inconsistency of maths: your understanding of the basics is far
    too limited. You don't understand the infinite; you don't understand
    point set topology; you don't understand basic set theory. In fact, your understanding is so limited, that you have no idea of the extent of your ignorance. If you had graduated in mathematics you would have a better
    idea of all these things. But you didn't.

    Try only to understand my argument. ∀n ∈ ℕ: 1/n - 1/(n+1) > 0. How can
    infinitely many unit fractions appear before every x > 0?

    You are getting confused with quantifiers, here. For each such x, there
    is an infinite set of fractions less than x. For different x's that set
    varies. There is no such infinite set which appears before every x > 0.

    The set varies but infinitely many elements remain the same.

    That is not true. There is no element which is in every one of these
    sets.

    A shrinking infinite set which remains infinite has an infinite core.

    Again, no. There is no such thing as a "core", here. Each of these sets
    has an infinitude of elements. No element is in all of these sets.

    Regards, WM

    --
    Alan Mackenzie (Nuremberg, Germany).

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  • From Alan Mackenzie@21:1/5 to Richard Damon on Mon Oct 7 11:44:25 2024
    Richard Damon <richard@damon-family.org> wrote:
    On 10/7/24 7:13 AM, joes wrote:
    Am Mon, 07 Oct 2024 10:13:21 +0200 schrieb WM:
    On 06.10.2024 17:55, joes wrote:
    Am Sun, 06 Oct 2024 17:26:07 +0200 schrieb WM:
    On 06.10.2024 16:52, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    This idea of time may be what misleads the mathematically less adept >>>>>> into believing that 0.999... < 1.
    That is true even in actual infinity.
    We can add 9 to 0.999...999 to obtain 9.999...999. But multiplying
    0.999...999 by 10 or, what is the same, shifting the digits 9 by one >>>>> step to the left-hand side, does not increase their number but leaves >>>>> it constant: 9.99...9990.
    10*0.999...999 = 9.99...9990 = 9 + 0.99...9990 < 9 + 0.999...999 ==> >>>>> 9*0.999...999 < 9 as it should be.
    In actual infinity, there is no last 9 (that would not be infinite).
    Actual means all, but not more. This implies a last before ω. The
    infinity means an end cannot be determined. It is produced by the dark
    numbers.
    Actually infinite means infinite, which doesn’t change when you add or
    subtract a finite number.


    Actual infinity doesn't exist for us finite beings.

    English language tip: The "Actually" in that sentence was not attached to
    the word "infinite", it meant something like "This is really true:".

    Anyhow, what do you mean when you say that "actual infinity doesn't
    exist"? I think we established over the weekend that for a mathematical
    entity not to exist, it must cause a contradiction. Or something like
    that.

    So what contradiction would the existence of actual infinity cause?

    --
    Alan Mackenzie (Nuremberg, Germany).

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  • From Richard Damon@21:1/5 to All on Mon Oct 7 07:20:05 2024
    On 10/7/24 5:51 AM, WM wrote:
    On 07.10.2024 11:36, FromTheRafters wrote:
    WM formulated the question :
    On 06.10.2024 19:03, FromTheRafters wrote:
    A set is a collection of well-defined objects, meaning we must be
    able to determine if an element belongs to a particulr set.

    But you can't determine the smallest unit fraction although it is a
    singleton set, a point on the real axis.

    There is no smallest unit fraction.

    If there are only fixed points, then there is a point such that between
    it and zero there is no further point.

    Regards, WM


    Nope, not if you have an INFINITE set of fixed points.

    The problem is we can't have an infinite set of fixed points, as we are
    finite.

    So, your "actual infinity" is something beyond what we can have, so it
    doesn't exist for us, and logic that assumes it is just breaks.

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  • From Richard Damon@21:1/5 to joes on Mon Oct 7 07:17:44 2024
    On 10/7/24 7:13 AM, joes wrote:
    Am Mon, 07 Oct 2024 10:13:21 +0200 schrieb WM:
    On 06.10.2024 17:55, joes wrote:
    Am Sun, 06 Oct 2024 17:26:07 +0200 schrieb WM:
    On 06.10.2024 16:52, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    This idea of time may be what misleads the mathematically less adept >>>>> into believing that 0.999... < 1.
    That is true even in actual infinity.
    We can add 9 to 0.999...999 to obtain 9.999...999. But multiplying
    0.999...999 by 10 or, what is the same, shifting the digits 9 by one
    step to the left-hand side, does not increase their number but leaves
    it constant: 9.99...9990.
    10*0.999...999 = 9.99...9990 = 9 + 0.99...9990 < 9 + 0.999...999 ==>
    9*0.999...999 < 9 as it should be.
    In actual infinity, there is no last 9 (that would not be infinite).
    Actual means all, but not more. This implies a last before ω. The
    infinity means an end cannot be determined. It is produced by the dark
    numbers.
    Actually infinite means infinite, which doesn’t change when you add or subtract a finite number.


    Actual infinity doesn't exist for us finite beings.

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  • From Alan Mackenzie@21:1/5 to wolfgang.mueckenheim@tha.de on Mon Oct 7 13:19:14 2024
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 06.10.2024 17:48, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    This idea of time may be what misleads the mathematically less adept
    into believing that 0.999... < 1.

    That is true even in actual infinity.
    We can add 9 to 0.999...999 to obtain 9.999...999. But multiplying
    0.999...999 by 10 or, what is the same, shifting the digits 9 by one
    step to the left-hand side, does not increase their number but leaves it >>> constant: 9.99...9990.

    Totally irrelevant to my point. I was talking about the unbounded
    sequence 0.999.... You have replied about a bounded finite sequence of
    9's.

    No, even an unbounded sequence does not get longer when shifted by one step.

    The concept of "length" appropriate for finite sets doesn't apply to
    infinite sets. Think! infinite means "without end" - unendlich. You
    are manipulating the supposed end of an endless sequence. Nonsense!

    Again, totally missing the point.

    You don't understand that actual infinity is a fixed quantity.

    It may be "fixed" whatever that might mean, but to regard it as a
    "quantity" is more than questionable.

    Set theory depends on actual infinity.

    How would it go wrong if there were merely potential infinity?

    Bijection means completeness.

    No. Bijection just means a 1-1 correspondence between the elements of
    two sets. Nowhere in that definition is any mention of completeness.
    The bijection can be just as easily a "potential" bijection as an
    "actual" bijection.

    Potential infinity is never complete. But potential infinity is used in
    fact, best seen with Hilbert's hotel or mapping of natural numbers on
    even natural numbers. It is the reason why all countable sets are
    countable. In actual infinity there are more natural numbers than even natural numbers.

    Depending on how you pair them, there can also be more even natural
    numbers than natural numbers. The idea of one countable set being
    "bigger" than another countable set is simply nonsense.

    [ .... ]

    Bijections are just as complete with "potential infinity" as with "actual
    infinity".

    No, that is wrong.

    Feel free to give an example of a "bijection" between "potentially
    infinite" sets which are countable, which fails to meet the definition of bijection as I have outlined above.

    But Cantor's bijections never are complete. Cantor's list must be
    completely enumerated by natural numbers. The diagonal number must be
    complete such that no digit is missing in order to be distinct from
    every listed real number.

    The diagonal number _is_ complete. Remember, we are not constructing it tiringly one digit per second, or anything like that. The entire number
    is defined and simply exists. There is no time in set theory.

    Impossible. All that is nonsense.

    The nonsense is the outdated notion of "potential" and "actual" infinity. Mathematics no longer has these. All your arguments demonstrate why
    these terms are incoherent. "Infinite" stands on its own.

    Yes I agree with that last sentiment. Talking about "completely" with
    regard to infinite sets is nonsense.

    Then bijections are impossible.

    It isn't even clear what you mean
    by saying the diagonal number must be "complete". It's generated by an
    infinite process, but remember there's no time involved. It just is.

    If it is never complete, then always more is following and the diagonal number is never excluded from the list.

    Again, there is no time in set theory. Given a purported complete list
    of real numbers, the diagonal number simply exists, and is not in that
    list.

    Regards, WM

    --
    Alan Mackenzie (Nuremberg, Germany).

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  • From joes@21:1/5 to All on Mon Oct 7 15:10:55 2024
    Am Mon, 07 Oct 2024 10:47:25 +0200 schrieb WM:
    On 06.10.2024 18:48, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 06.10.2024 15:59, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    All unit fractions are separate points on the positive real axis,
    but there are infinitely many for every x > 0.
    That can only hold for definable x, not for all.
    Poppycock! You'll have to do better than that to provide such a
    contradiction.
    It is good enough, but you can't understand.
    I do understand. I understand that what you are writing is not maths.
    I'm trying to explain to you why. I've already proved that there are
    no "undefinable" natural numbers. So assertions about them can not
    make any sense.
    You have not understood that all unit fractions are separate points on
    the positive axis. Every point is a singleton set and could be seen as
    such, but it cannot. Hence it is dark.
    Why can some points not be „seen” as a singleton set?

    Hint: Skilled mathematicians have worked on trying to
    prove the inconsistency of maths, without success.
    What shall that prove? Try to understand.
    It shows that any such results are vanishingly unlikely to be found by
    non-specialists such as you and I.
    Unlikely is not impossible.
    Nothing is impossible…

    Try only to understand my argument. ∀n ∈ ℕ: 1/n - 1/(n+1) > 0. How can
    infinitely many unit fractions appear before every x > 0?
    You are getting confused with quantifiers, here. For each such x,
    there is an infinite set of fractions less than x. For different x's
    that set varies. There is no such infinite set which appears before
    every x > 0.
    The set varies but infinitely many elements remain the same. A shrinking infinite set which remains infinite has an infinite core.
    Here is your essential misunderstanding: there is no mysterious Something
    that makes a set infinite. It is infinite because it is not finite, has
    no natural number as its size.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to All on Mon Oct 7 15:12:39 2024
    Am Mon, 07 Oct 2024 10:50:19 +0200 schrieb WM:
    On 06.10.2024 19:03, FromTheRafters wrote:
    A set is a collection of well-defined objects,
    meaning we must be able to determine if an element belongs to a
    particulr set.
    But you can't determine the smallest unit fraction although it is a
    singleton set, a point on the real axis.
    The proof of its existence you leave us wanting.
    Can the smallest UF be determined to belong to the singleton set of
    the smallest UF if it cannot be determined?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to All on Mon Oct 7 15:19:20 2024
    Am Mon, 07 Oct 2024 11:51:43 +0200 schrieb WM:
    On 07.10.2024 11:36, FromTheRafters wrote:
    WM formulated the question :
    On 06.10.2024 19:03, FromTheRafters wrote:
    A set is a collection of well-defined objects, meaning we must be
    able to determine if an element belongs to a particulr set.

    But you can't determine the smallest unit fraction although it is a
    singleton set, a point on the real axis.
    There is no smallest unit fraction.
    If there are only fixed points, then there is a point such that between
    it and zero there is no further point.
    How do you imagine that? It has a finite distance from 0.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From Alan Mackenzie@21:1/5 to FromTheRafters on Mon Oct 7 16:11:37 2024
    FromTheRafters <FTR@nomail.afraid.org> wrote:
    Alan Mackenzie wrote :

    [ .... ]

    The idea of one countable set being "bigger" than another countable set is >> simply nonsense.

    Oops. Finite sets are countable too. :)

    Yes indeed! Thanks for pointing out my mistake. What I should have
    written (WM please take note) is:

    The idea of one countably infinite set being "bigger" than another
    countably infinite set is simply nonsense.

    --
    Alan Mackenzie (Nuremberg, Germany).

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  • From joes@21:1/5 to All on Mon Oct 7 15:18:30 2024
    Am Mon, 07 Oct 2024 11:08:33 +0200 schrieb WM:
    On 07.10.2024 10:05, joes wrote:
    Am Mon, 07 Oct 2024 09:41:23 +0200 schrieb WM:
    On 06.10.2024 17:48, Alan Mackenzie wrote:
    even an unbounded sequence does not get longer when shifted by one
    step.
    Nor does it get shorter, it stays infinite.
    It keeps all its elements but not more.
    „More” being a different kind of infinity, namely at least uncountable.
    All ω+k are equally infinite.

    Bijection is not about completeness, countability is.
    Bijective means injective and surjective.
    Exactly, which is the case for every finite subset.

    Of course stopping after a finite number, which potential infinity
    seems to mean, is not „complete” in that sense. Hilbert’s Hotel is
    actually infinite, it already holds infinite guests.
    Name them by all the natural numbers. Then no further guest can appear.
    It can, if I begin numbering with 2. The cardinality of N\{1} can’t be finite.

    All of them can at once move to the next room,
    All rooms are enumerated by all the natural numbers. Hence there is no
    chance to move. Only in potential infinity there is.
    Huh? They are all fixed, we can move them „rigidly”.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From Jim Burns@21:1/5 to All on Mon Oct 7 14:05:49 2024
    On 10/5/2024 3:33 PM, WM wrote:
    On 05.10.2024 20:12, Jim Burns wrote:
    On 10/5/2024 5:43 AM, WM wrote:

    [In] many cases it is correct.

    "Many cases" is insufficient when
    the argument requires "all cases".

    My argument requires only one case,

    Your argument,
    in order to _be an argument_
    needs to _show_ its result is true.

    A widely.used way to _show_ a result is true
    is to assemble mini.argument.forms,
    each of which _must_ end not.first.falsely.
    ⎛ For finite beings,
    ⎝ no first false requires no false.

    A mini.argument.form which
    _must_ end not.first.falsely
    ends not.first.falsely _in all cases_

    The mini.argument.forms
    ⎛ ∃x∈X: ∀y∈Y: x⫷y
    ⎝ ∀y∈Y: ∃x∈X: x⫷y
    and
    ⎛ ∀y∈Y: ∃x∈X: x⫷y
    ⎝ ∃x∈X: ∀y∈Y: x⫷y
    are distinguished by, firstly,
    ending not.first.falsely in all cases,
    and, secondly,
    NOT ending not.first.falsely in all cases.

    The first shows may show us something.
    The second, not so much.

    My argument requires only one case,

    The argument you present has nothing beyond
    demanding your preference _be_ true,
    an argument which is not.even.wrong.

    In what may be an excess of charity,
    I propose that you've made an _error_
    which would make you _wrong_
    which would be an improvement over not.even.wrong.

    In order to improve to _wrong_
    your (hypothetical new) argument requires
    mini.argument.forms which end not.first.falsely
    in all cases.

    My argument requires only one case,
    best demonstrated with endsegments E(n).
    The intersection of all *infinite* endsegments
    is infinite,
    because
    they all contain the same natural numbers which
    have not yet been eliminated by
    the process E(n+1) = E(n) \ {n}.

    The intersection of all end.segments is
    the set of natural numbers in each end.segment.
    Each natural number is not.in one or more end.segment.

    That creates a problem (but for only you).
    Your attempt to fix the problem involves
    a change of the definition of intersection, or
    of natural number, or of something else.

    Changing what you think "infinite" means
    from what we mean by "very large finite"
    to what we mean by "infinite"
    would fix all that,
    but that includes you being wrong,
    and you prefer being not.even.wrong.

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  • From Richard Damon@21:1/5 to Chris M. Thomasson on Mon Oct 7 19:01:47 2024
    On 10/7/24 4:27 PM, Chris M. Thomasson wrote:
    On 10/7/2024 4:17 AM, Richard Damon wrote:
    On 10/7/24 7:13 AM, joes wrote:
    Am Mon, 07 Oct 2024 10:13:21 +0200 schrieb WM:
    On 06.10.2024 17:55, joes wrote:
    Am Sun, 06 Oct 2024 17:26:07 +0200 schrieb WM:
    On 06.10.2024 16:52, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    This idea of time may be what misleads the mathematically less adept >>>>>>> into believing that 0.999... < 1.
    That is true even in actual infinity.
    We can add 9 to 0.999...999 to obtain 9.999...999. But multiplying >>>>>> 0.999...999 by 10 or, what is the same, shifting the digits 9 by one >>>>>> step to the left-hand side, does not increase their number but leaves >>>>>> it constant: 9.99...9990.
    10*0.999...999 = 9.99...9990 = 9 + 0.99...9990 < 9 + 0.999...999 ==> >>>>>> 9*0.999...999 < 9 as it should be.
    In actual infinity, there is no last 9 (that would not be infinite).
    Actual means all, but not more. This implies a last before ω. The
    infinity means an end cannot be determined. It is produced by the dark >>>> numbers.
    Actually infinite means infinite, which doesn’t change when you add or >>> subtract a finite number.


    Actual infinity doesn't exist for us finite beings.

    What do you mean? Are you trying to go the WM route where there is a
    largest natural number... We just can't see it yet because it's dark? Oh shit.

    I am allowing that an INFINITE being MIGHT be able to comprehend
    something like an actual infinity. But this can not possibly be done by
    a finite being.

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  • From Richard Damon@21:1/5 to Alan Mackenzie on Mon Oct 7 18:58:42 2024
    On 10/7/24 7:44 AM, Alan Mackenzie wrote:
    Richard Damon <richard@damon-family.org> wrote:
    On 10/7/24 7:13 AM, joes wrote:
    Am Mon, 07 Oct 2024 10:13:21 +0200 schrieb WM:
    On 06.10.2024 17:55, joes wrote:
    Am Sun, 06 Oct 2024 17:26:07 +0200 schrieb WM:
    On 06.10.2024 16:52, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    This idea of time may be what misleads the mathematically less adept >>>>>>> into believing that 0.999... < 1.
    That is true even in actual infinity.
    We can add 9 to 0.999...999 to obtain 9.999...999. But multiplying >>>>>> 0.999...999 by 10 or, what is the same, shifting the digits 9 by one >>>>>> step to the left-hand side, does not increase their number but leaves >>>>>> it constant: 9.99...9990.
    10*0.999...999 = 9.99...9990 = 9 + 0.99...9990 < 9 + 0.999...999 ==> >>>>>> 9*0.999...999 < 9 as it should be.
    In actual infinity, there is no last 9 (that would not be infinite).
    Actual means all, but not more. This implies a last before ω. The
    infinity means an end cannot be determined. It is produced by the dark >>>> numbers.
    Actually infinite means infinite, which doesn’t change when you add or >>> subtract a finite number.


    Actual infinity doesn't exist for us finite beings.

    English language tip: The "Actually" in that sentence was not attached to
    the word "infinite", it meant something like "This is really true:".

    But all his reference to the word "Actually" are part of his trying to
    define the term "Actual Infinity".


    Anyhow, what do you mean when you say that "actual infinity doesn't
    exist"? I think we established over the weekend that for a mathematical entity not to exist, it must cause a contradiction. Or something like
    that.

    So what contradiction would the existence of actual infinity cause?


    It implies that there exists a first positive real, rational number or
    unit fraction for one (at least the way WM uses it).

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to Chris M. Thomasson on Mon Oct 7 19:08:44 2024
    On 10/7/24 4:05 PM, Chris M. Thomasson wrote:
    On 10/7/2024 4:20 AM, Richard Damon wrote:
    On 10/7/24 5:51 AM, WM wrote:
    On 07.10.2024 11:36, FromTheRafters wrote:
    WM formulated the question :
    On 06.10.2024 19:03, FromTheRafters wrote:
    A set is a collection of well-defined objects, meaning we must be
    able to determine if an element belongs to a particulr set.

    But you can't determine the smallest unit fraction although it is a
    singleton set, a point on the real axis.

    There is no smallest unit fraction.

    If there are only fixed points, then there is a point such that
    between it and zero there is no further point.

    Regards, WM


    Nope, not if you have an INFINITE set of fixed points.

    The problem is we can't have an infinite set of fixed points, as we
    are finite.

    If each one of these is "fixed" in your line of thinking:

    1/1, 1/2, 1/3, 1/4, 1/5, ...

    Well, there are infinitely many of them... ;^)



    The problem with his "Actual infinity" is you need to get rid of the ...
    (as that is generative) and put in the full list of the number.

    Because you have a full list of the numbers, he think that means there
    is a last one to that list.

    The problem is that the full list can not be presented to a finite
    being, and thus, that "Actual infinity" can't be comprehended by it.

    You need to b infinite, to actually have a fully generated infinite.

    We can handle infinities by generative processes (his potential
    infinity) because we don't need to actually get to the end, we just know
    the process can continue forever and there will be no end, except after infinite work is done.



    So, your "actual infinity" is something beyond what we can have, so it
    doesn't exist for us, and logic that assumes it is just breaks.


    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to Chris M. Thomasson on Mon Oct 7 20:57:12 2024
    On 10/7/24 8:38 PM, Chris M. Thomasson wrote:
    On 10/7/2024 4:01 PM, Richard Damon wrote:
    On 10/7/24 4:27 PM, Chris M. Thomasson wrote:
    On 10/7/2024 4:17 AM, Richard Damon wrote:
    On 10/7/24 7:13 AM, joes wrote:
    Am Mon, 07 Oct 2024 10:13:21 +0200 schrieb WM:
    On 06.10.2024 17:55, joes wrote:
    Am Sun, 06 Oct 2024 17:26:07 +0200 schrieb WM:
    On 06.10.2024 16:52, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    This idea of time may be what misleads the mathematically less >>>>>>>>> adept
    into believing that 0.999... < 1.
    That is true even in actual infinity.
    We can add 9 to 0.999...999 to obtain 9.999...999. But multiplying >>>>>>>> 0.999...999 by 10 or, what is the same, shifting the digits 9 by >>>>>>>> one
    step to the left-hand side, does not increase their number but >>>>>>>> leaves
    it constant: 9.99...9990.
    10*0.999...999 = 9.99...9990 = 9 + 0.99...9990 < 9 + 0.999...999 >>>>>>>> ==>
    9*0.999...999 < 9 as it should be.
    In actual infinity, there is no last 9 (that would not be infinite). >>>>>> Actual means all, but not more. This implies a last before ω. The >>>>>> infinity means an end cannot be determined. It is produced by the
    dark
    numbers.
    Actually infinite means infinite, which doesn’t change when you add or >>>>> subtract a finite number.


    Actual infinity doesn't exist for us finite beings.

    What do you mean? Are you trying to go the WM route where there is a
    largest natural number... We just can't see it yet because it's dark?
    Oh shit.

    I am allowing that an INFINITE being MIGHT be able to comprehend
    something like an actual infinity. But this can not possibly be done
    by a finite being.

    Well, us as finite beings know that there is not a largest natural
    number... That right there is a basic understanding of the infinite:
    Fair enough?

    Yes, us "smart" finite beings understand that the logic of there needing
    to be a "lowest value" unit fraction is incorrect, even if the "logic"
    of approaching the "existing" list of points from the low side would
    seem to imply that there should be a first.

    We can't really "see" what is happening there, in a fixed creation point
    of view, which is what makes that concept not "real" for us.

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  • From Richard Damon@21:1/5 to Chris M. Thomasson on Mon Oct 7 20:53:30 2024
    On 10/7/24 8:35 PM, Chris M. Thomasson wrote:
    On 10/7/2024 3:58 PM, Richard Damon wrote:
    On 10/7/24 7:44 AM, Alan Mackenzie wrote:
    Richard Damon <richard@damon-family.org> wrote:
    On 10/7/24 7:13 AM, joes wrote:
    Am Mon, 07 Oct 2024 10:13:21 +0200 schrieb WM:
    On 06.10.2024 17:55, joes wrote:
    Am Sun, 06 Oct 2024 17:26:07 +0200 schrieb WM:
    On 06.10.2024 16:52, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    This idea of time may be what misleads the mathematically less >>>>>>>>> adept
    into believing that 0.999... < 1.
    That is true even in actual infinity.
    We can add 9 to 0.999...999 to obtain 9.999...999. But multiplying >>>>>>>> 0.999...999 by 10 or, what is the same, shifting the digits 9 by >>>>>>>> one
    step to the left-hand side, does not increase their number but >>>>>>>> leaves
    it constant: 9.99...9990.
    10*0.999...999 = 9.99...9990 = 9 + 0.99...9990 < 9 + 0.999...999 >>>>>>>> ==>
    9*0.999...999 < 9 as it should be.
    In actual infinity, there is no last 9 (that would not be infinite). >>>>>> Actual means all, but not more. This implies a last before ω. The >>>>>> infinity means an end cannot be determined. It is produced by the
    dark
    numbers.
    Actually infinite means infinite, which doesn’t change when you add or >>>>> subtract a finite number.


    Actual infinity doesn't exist for us finite beings.

    English language tip: The "Actually" in that sentence was not
    attached to
    the word "infinite", it meant something like "This is really true:".

    But all his reference to the word "Actually" are part of his trying to
    define the term "Actual Infinity".


    Anyhow, what do you mean when you say that "actual infinity doesn't
    exist"?  I think we established over the weekend that for a mathematical >>> entity not to exist, it must cause a contradiction.  Or something like
    that.

    So what contradiction would the existence of actual infinity cause?


    It implies that there exists a first positive real, rational number or
    unit fraction for one (at least the way WM uses it).

    A first unit fraction would be 1/1? :^) However this is in the very
    _strict_ realm of unit fractions. WM seems to like to mix and match
    realms. Not sure why he thinks there is a smallest unit fraction...
    Anyway, shit happens.

    No, because he IS specifying the direction of counting, and is trying to
    count from the "end" that doesn't have an end.

    His view is that if the values of the existing unit fractions exist, and
    we travel up the line from the negative side in increasing value, it
    on.y make sense that there should be a "first" point we reach.

    The concept, on the face of it, seems logical, it just is a fact that it doesn't work, and that is in part because of some of the strange
    properties that trying to imagine a realized infinity creates.

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  • From Richard Damon@21:1/5 to Chris M. Thomasson on Mon Oct 7 21:00:55 2024
    On 10/7/24 8:43 PM, Chris M. Thomasson wrote:
    On 10/7/2024 4:08 PM, Richard Damon wrote:
    On 10/7/24 4:05 PM, Chris M. Thomasson wrote:
    On 10/7/2024 4:20 AM, Richard Damon wrote:
    On 10/7/24 5:51 AM, WM wrote:
    On 07.10.2024 11:36, FromTheRafters wrote:
    WM formulated the question :
    On 06.10.2024 19:03, FromTheRafters wrote:
    A set is a collection of well-defined objects, meaning we must >>>>>>>> be able to determine if an element belongs to a particulr set.

    But you can't determine the smallest unit fraction although it is >>>>>>> a singleton set, a point on the real axis.

    There is no smallest unit fraction.

    If there are only fixed points, then there is a point such that
    between it and zero there is no further point.

    Regards, WM


    Nope, not if you have an INFINITE set of fixed points.

    The problem is we can't have an infinite set of fixed points, as we
    are finite.

    If each one of these is "fixed" in your line of thinking:

    1/1, 1/2, 1/3, 1/4, 1/5, ...

    Well, there are infinitely many of them... ;^)



    The problem with his "Actual infinity" is you need to get rid of
    the ... (as that is generative) and put in the full list of the number.

    Because you have a full list of the numbers, he think that means there
    is a last one to that list.

    Odd to me! He must think 1/6 is dark wrt the list, right? Am I getting
    closer to WM's strange way of thinking? Well, 1/6 is not so dark anymore because I wrote it here... ;^) Wow.



    The problem is that the full list can not be presented to a finite
    being, and thus, that "Actual infinity" can't be comprehended by it.

    A fill list:

    all of the natural numbers.

    That is a finite term for all of them. WM, well, he might explode?

    Yep, that is part of the problem. We can only think of "lists" as finite
    lists, but the "actually infinite" list just goes on and on. This means
    we can't GET to that far end to start counting from there.

    It just with the unit fractions, it isn't the "distance" that gets
    infinite, it is the scale gets infinitely small, so we can't get down to
    find that region, and that makes it easier to decieve yourself about its properties.




    You need to b infinite, to actually have a fully generated infinite.

    We can handle infinities by generative processes (his potential
    infinity) because we don't need to actually get to the end, we just
    know the process can continue forever and there will be no end, except
    after infinite work is done.



    So, your "actual infinity" is something beyond what we can have, so
    it doesn't exist for us, and logic that assumes it is just breaks.





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  • From Moebius@21:1/5 to All on Tue Oct 8 09:20:30 2024
    Am 07.10.2024 um 22:26 schrieb Chris M. Thomasson:
    On 10/7/2024 4:17 AM, Richard Damon wrote:

    Actual infinity doesn't exist for us finite beings.

    It exists in our math...

    Exactly! It exists in the same way OTHER /mathematical objects/ or
    /concepts/ exist.

    Btw. Did you see the number 3 lately? (Or the empty set {}?)

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  • From Moebius@21:1/5 to All on Tue Oct 8 09:23:21 2024
    Am 08.10.2024 um 02:35 schrieb Chris M. Thomasson:
    On 10/7/2024 3:58 PM, Richard Damon wrote:
    On 10/7/24 7:44 AM, Alan Mackenzie wrote:
    at.

    So what contradiction would the existence of actual infinity cause?

    It implies that there exists a first positive real, rational number or
    unit fraction

    Complete nonsense.

    No, the assmption of the existence of infinite sets (aka accepting
    "actual infinity") does NOT imply that.

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  • From Moebius@21:1/5 to All on Tue Oct 8 09:29:06 2024
    Am 08.10.2024 um 02:38 schrieb Chris M. Thomasson:
    On 10/7/2024 4:01 PM, Richard Damon wrote:

    I am allowing that an INFINITE being MIGHT be able to comprehend
    something like an actual infinity. But this can not possibly be done
    by a finite being.

    It can.

    This idiot should read Peter Suber's Infinite Reflections:

    "Conclusion

    Properly understood, the idea of a completed infinity is no longer a
    problem in mathematics or philosophy. It is perfectly intelligible and coherent. Perhaps it cannot be imagined but it can be conceived; it is
    not reserved for infinite omniscience, but knowable by finite humanity;
    it may contradict intuition, but it does not contradict itself. To
    conceive it adequately we need not enumerate or visualize infinitely
    many objects, but merely understand self-nesting. We have an actual,
    positive idea of it, or at least with training we can have one; we are
    not limited to the idea of finitude and its negation. In fact, it is at
    least as plausible to think that we understand finitude as the negation
    of infinitude as the other way around. The world of the infinite is not
    barred to exploration by the equivalent of sea monsters and tempests; it
    is barred by the equivalent of motion sickness. The world of the
    infinite is already open for exploration, but to embark we must unlearn
    our finitistic intuitions which instill fear and confusion by making
    some consistent and demonstrable results about the infinite literally counter-intuitive. Exploration itself will create an alternative set of intuitions which make us more susceptible to the feeling which Kant
    called the sublime. Longer acquaintance will confirm Spinoza's
    conclusion that the secret of joy is to love something infinite."

    Source: http://legacy.earlham.edu/~peters/writing/infinity.htm

    Well, us as finite beings know that there is not a largest natural
    number... That right there is a basic understanding of the infinite:
    Fair enough?

    Right.

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  • From Moebius@21:1/5 to All on Tue Oct 8 09:30:44 2024
    Am 08.10.2024 um 09:29 schrieb Moebius:
    Am 08.10.2024 um 02:38 schrieb Chris M. Thomasson:
    On 10/7/2024 4:01 PM, Richard Damon wrote:

    I am allowing that an INFINITE being MIGHT be able to comprehend
    something like an actual infinity. But this can not possibly be done
    by a finite being.

    It can.

    This idiot should read Peter Suber's Infinite Reflections:

    "Perhaps it cannot be imagined but it can be conceived; it is not
    reserved for infinite omniscience, but knowable by finite humanity..."

    "Conclusion

    Properly understood, the idea of a completed infinity is no longer a
    problem in mathematics or philosophy. It is perfectly intelligible and coherent. Perhaps it cannot be imagined but it can be conceived; it is
    not reserved for infinite omniscience, but knowable by finite humanity;
    it may contradict intuition, but it does not contradict itself. To
    conceive it adequately we need not enumerate or visualize infinitely
    many objects, but merely understand self-nesting. We have an actual,
    positive idea of it, or at least with training we can have one; we are
    not limited to the idea of finitude and its negation. In fact, it is at
    least as plausible to think that we understand finitude as the negation
    of infinitude as the other way around. The world of the infinite is not barred to exploration by the equivalent of sea monsters and tempests; it
    is barred by the equivalent of motion sickness. The world of the
    infinite is already open for exploration, but to embark we must unlearn
    our finitistic intuitions which instill fear and confusion by making
    some consistent and demonstrable results about the infinite literally counter-intuitive. Exploration itself will create an alternative set of intuitions which make us more susceptible to the feeling which Kant
    called the sublime. Longer acquaintance will confirm Spinoza's
    conclusion that the secret of joy is to love something infinite."

    Source: http://legacy.earlham.edu/~peters/writing/infinity.htm

    Well, us as finite beings know that there is not a largest natural number... That right there is a basic understanding of the infinite:
    Fair enough?

    Right.

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  • From Moebius@21:1/5 to All on Tue Oct 8 09:34:32 2024
    Am 08.10.2024 um 09:30 schrieb Moebius:
    Am 08.10.2024 um 09:29 schrieb Moebius:
    Am 08.10.2024 um 02:38 schrieb Chris M. Thomasson:
    On 10/7/2024 4:01 PM, Richard Damon wrote:

    I am allowing that an INFINITE being MIGHT be able to comprehend
    something like an actual infinity. But this can not possibly be done
    by a finite being.

    It can.

    This idiot should read Peter Suber's Infinite Reflections:

    "Perhaps it cannot be imagined but it can be conceived; it is not
    reserved for infinite omniscience, but knowable by finite humanity..."

    "Conclusion

    Properly understood, the idea of a completed infinity is no longer a
    problem in mathematics or philosophy. It is perfectly intelligible and
    coherent. Perhaps it cannot be imagined but it can be conceived; it is
    not reserved for infinite omniscience, but knowable by finite
    humanity; it may contradict intuition, but it does not contradict
    itself. To conceive it adequately we need not enumerate or visualize
    infinitely many objects, but merely understand self-nesting. We have
    an actual, positive idea of it, or at least with training we can have
    one; we are not limited to the idea of finitude and its negation. In
    fact, it is at least as plausible to think that we understand finitude
    as the negation of infinitude as the other way around. The world of
    the infinite is not barred to exploration by the equivalent of sea
    monsters and tempests; it is barred by the equivalent of motion
    sickness. The world of the infinite is already open for exploration,
    but to embark we must unlearn our finitistic intuitions which instill
    fear and confusion by making some consistent and demonstrable results
    about the infinite literally counter-intuitive. Exploration itself
    will create an alternative set of intuitions which make us more
    susceptible to the feeling which Kant called the sublime. Longer
    acquaintance will confirm Spinoza's conclusion that the secret of joy
    is to love something infinite."

    Source: http://legacy.earlham.edu/~peters/writing/infinity.htm

    Well, us as finite beings know that there is not a largest natural
    number... That right there is a basic understanding of the infinite:
    Fair enough?

    "we are not limited to the idea of finitude and its negation. In fact,
    it is at least as plausible to think that we understand finitude as the negation of infinitude as the other way around." :-P

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  • From WM@21:1/5 to Richard Damon on Tue Oct 8 10:28:33 2024
    On 07.10.2024 13:08, Richard Damon wrote:
    On 10/7/24 4:53 AM, WM wrote:

    The actual points are not "dark" but defined.

    All unit fractios are such points. Each one is a singleton adhering to
    the rules of geometry. Therefore each one including the smallest oe
    could be found unless it was dark.

    Nope, the problem is you "rule of geometry" that there must be a
    smallest (that isn't 0) doesn't actually exist.

    The rule of geometry is that every point exists.

    Note, "Geometry" says nothing about "adjacent points",

    So it is. It simply says that a single point exists or does not exist, independent of any other point. Hence the first existing point can be
    seen unless it is dark.

    Regards, WM

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  • From WM@21:1/5 to joes on Tue Oct 8 10:34:48 2024
    On 07.10.2024 13:13, joes wrote:
    Am Mon, 07 Oct 2024 10:13:21 +0200 schrieb WM:

    Actual means all, but not more. This implies a last before ω. The
    infinity means an end cannot be determined. It is produced by the dark
    numbers.
    Actually infinite means infinite, which doesn’t change when you add or subtract a finite number.

    It doesn’t change when you add or subtract a definable number.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Tue Oct 8 10:31:37 2024
    On 07.10.2024 13:12, Richard Damon wrote:
    On 10/7/24 4:56 AM, WM wrote:
    On 06.10.2024 19:11, Richard Damon wrote:
    On 10/6/24 9:42 AM, WM wrote:
    On 06.10.2024 04:51, Richard Damon wrote:
    On 10/5/24 2:58 PM, WM wrote:

    Every point is a finite set.

    The fact that we can keep doing that indefinitely, and never reach
    a point we can't continue, is proof that the concept of "next
    point" doesn't exist

    The concept of point however does exist. Every single point can be
    found unless it is dark.

    And every single point that exists can be found, and that includes
    every point on the "Number Line"

    Find the smallest unit fraction.

    A concept that doesn't exist.


    Except the "Unit Fractions" or the "Natural Numbers" those have gaps
    between the elements, with an "accumulation point" at 0 where the
    Unit Fractions become dense there.

    No. They nowhere become dense: ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 .


    So, what is the maximum density of unit fractions?

    It is zero because every unit fraction is a point, every gap has
    uncountable may points.

    The fact that 1/n - 1/(n+1) > 0 just means that 1/n > 1/(n+1) and thus
    there is always a unit fraction smaller than the one you have.

    The is no lower limit to the value of 1/n - 1/(n+1) except 0

    This limit is what you can see because you cannot see the reality:
    Between all points there are giant gaps of uncountable many points.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Tue Oct 8 10:37:32 2024
    On 07.10.2024 13:20, Richard Damon wrote:
    On 10/7/24 5:51 AM, WM wrote:
    On 07.10.2024 11:36, FromTheRafters wrote:
    WM formulated the question :
    On 06.10.2024 19:03, FromTheRafters wrote:
    A set is a collection of well-defined objects, meaning we must be
    able to determine if an element belongs to a particulr set.

    But you can't determine the smallest unit fraction although it is a
    singleton set, a point on the real axis.

    There is no smallest unit fraction.

    If there are only fixed points, then there is a point such that
    between it and zero there is no further point.

    Nope, not if you have an INFINITE set of fixed points.

    The individual point is independent of how many others are existing.

    The problem is we can't have an infinite set of fixed points, as we are finite.

    That is just under investigation.

    So, your "actual infinity" is something beyond what we can have, so it doesn't exist for us, and logic that assumes it is just breaks.

    Then set theory is outdated.

    Regards, WM

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  • From WM@21:1/5 to Alan Mackenzie on Tue Oct 8 10:48:49 2024
    On 07.10.2024 14:11, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    You have not understood that all unit fractions are separate points on
    the positive axis.

    I understand that full well.

    Then you understand that every point, if existing, is independent of the others. All unit fractions are points with uncounably many points
    between each pair. Hence all must be visible including the point next to
    zero, but they are not.
    A shrinking infinite set which remains infinite has an infinite core.

    Again, no. There is no such thing as a "core", here. Each of these sets
    has an infinitude of elements. No element is in all of these sets.

    Try to think better. A function of sets which are losing some elements
    but remain infinite, have the same infinite core. That argument is
    absolutely definite, a logical necessity. If you cannot understand it,
    then it is useless to continue this discussion.

    Regards, WM

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  • From Alan Mackenzie@21:1/5 to Richard Damon on Tue Oct 8 09:42:04 2024
    Richard Damon <richard@damon-family.org> wrote:
    On 10/7/24 7:44 AM, Alan Mackenzie wrote:
    Richard Damon <richard@damon-family.org> wrote:
    On 10/7/24 7:13 AM, joes wrote:
    Am Mon, 07 Oct 2024 10:13:21 +0200 schrieb WM:
    On 06.10.2024 17:55, joes wrote:
    Am Sun, 06 Oct 2024 17:26:07 +0200 schrieb WM:
    On 06.10.2024 16:52, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    This idea of time may be what misleads the mathematically less adept >>>>>>>> into believing that 0.999... < 1.
    That is true even in actual infinity.
    We can add 9 to 0.999...999 to obtain 9.999...999. But multiplying >>>>>>> 0.999...999 by 10 or, what is the same, shifting the digits 9 by one >>>>>>> step to the left-hand side, does not increase their number but leaves >>>>>>> it constant: 9.99...9990.
    10*0.999...999 = 9.99...9990 = 9 + 0.99...9990 < 9 + 0.999...999 ==> >>>>>>> 9*0.999...999 < 9 as it should be.
    In actual infinity, there is no last 9 (that would not be infinite). >>>>> Actual means all, but not more. This implies a last before ω. The
    infinity means an end cannot be determined. It is produced by the dark >>>>> numbers.
    Actually infinite means infinite, which doesn’t change when you add or >>>> subtract a finite number.


    Actual infinity doesn't exist for us finite beings.

    English language tip: The "Actually" in that sentence was not attached to
    the word "infinite", it meant something like "This is really true:".

    But all his reference to the word "Actually" are part of his trying to define the term "Actual Infinity".

    OK, maybe you're right, there. The semantics are a bit ambiguous. Joes
    is not a native English speaker. Apologies to Joes.

    Anyhow, what do you mean when you say that "actual infinity doesn't
    exist"? I think we established over the weekend that for a mathematical
    entity not to exist, it must cause a contradiction. Or something like
    that.

    So what contradiction would the existence of actual infinity cause?

    It implies that there exists a first positive real, rational number or
    unit fraction for one (at least the way WM uses it).

    Whoa! There're rather a lot of argument steps missing there. Just
    because WM asserts the existence of both actual infinity and a first
    strictly positive unit fraction doesn't mean the one implies the other.

    --
    Alan Mackenzie (Nuremberg, Germany).

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  • From WM@21:1/5 to Alan Mackenzie on Tue Oct 8 11:54:47 2024
    On 07.10.2024 15:19, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    No, even an unbounded sequence does not get longer when shifted by one step.

    The concept of "length" appropriate for finite sets doesn't apply to
    infinite sets.

    It is the concept of number of elements. It is appropriate in actual
    infinity.

    infinite means "without end" - unendlich.

    Actual infinity means complete. That implies a fixed number.
    You don't understand that actual infinity is a fixed quantity.

    It may be "fixed" whatever that might mean, but to regard it as a
    "quantity" is more than questionable.

    Fixed means that no element can be added and no element can be lost. The
    number of nines is fixed. That is an assumption only, but necessary for bijections.

    Bijection means completeness.

    No. Bijection just means a 1-1 correspondence between the elements of
    two sets. > Nowhere in that definition is any mention of completeness.

    It also means surjectivity. The preimage is complete by definition.
    The diagonal number _is_ complete. Remember, we are not constructing it tiringly one digit per second, or anything like that. The entire number
    is defined and simply exists.

    Only when the set of indexes is complete.

    Regards, WM

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  • From WM@21:1/5 to Moebius on Tue Oct 8 12:03:16 2024
    On 08.10.2024 09:30, Moebius wrote:
    Am 08.10.2024 um 09:29 schrieb Moebius:

    Properly understood, the idea of a completed infinity is no longer a
    problem in mathematics or philosophy. It is perfectly intelligible and
    coherent.

    Yes, but it is completed and therefore fixed. The number of nines in
    0.999... does not change when shifted by one step.

    Regards, WM

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  • From WM@21:1/5 to FromTheRafters on Tue Oct 8 12:08:06 2024
    On 08.10.2024 01:26, FromTheRafters wrote:
    It is infinite if it is not finite.

    But does it go on and on or is it fixed and completed?

    Regards, WM

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  • From Alan Mackenzie@21:1/5 to wolfgang.mueckenheim@tha.de on Tue Oct 8 10:04:02 2024
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 07.10.2024 14:11, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    You have not understood that all unit fractions are separate points on
    the positive axis.

    I understand that full well.

    Then you understand that every point, if existing, is independent of the others.

    Not sure what you mean by "independent of" here. Each point exists.

    All unit fractions are points with uncounably many points between each
    pair.

    Yes, OK.

    Hence all must be visible including the point next to zero, but they
    are not.

    There is no point next to zero. All rationals are points with
    uncountably many points between each pair. That includes between zero
    and any other rational, including a unit fraction. There is no "next
    to", here.

    A shrinking infinite set which remains infinite has an infinite core.

    Again, no. There is no such thing as a "core", here. Each of these sets
    has an infinitude of elements. No element is in all of these sets.

    Try to think better. A function of sets which are losing some elements
    but remain infinite, have the same infinite core.

    That is untrue. For any element which you assert is in the "core", I
    can give one of these sets which does not contain that element. The
    "core" is thus empty.

    That argument is absolutely definite, a logical necessity. If you
    cannot understand it, ....

    It wasn't an argument, it was a bare statement, devoid of any supporting argument. I understand it full well, and I understand that it's
    mistaken.

    .... then it is useless to continue this discussion.

    Maybe that is the case.

    Regards, WM

    --
    Alan Mackenzie (Nuremberg, Germany).

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  • From WM@21:1/5 to Alan Mackenzie on Tue Oct 8 12:22:50 2024
    On 07.10.2024 18:11, Alan Mackenzie wrote:
    What I should have
    written (WM please take note) is:

    The idea of one countably infinite set being "bigger" than another
    countably infinite set is simply nonsense.

    The idea is supported by the fact that set A as a superset of set B is
    bigger than B. Simply nonsense is the claim that there are as many
    algebraic numbers as prime numbers. For Cantor's enumeration of all
    fractions I have given a simple disproof.

    Regards, WM

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  • From WM@21:1/5 to Jim Burns on Tue Oct 8 12:18:48 2024
    On 07.10.2024 20:05, Jim Burns wrote:
    On 10/5/2024 3:33 PM, WM wrote:
    On 05.10.2024 20:12, Jim Burns wrote:
    On 10/5/2024 5:43 AM, WM wrote:

    [In] many cases it is correct.

    "Many cases" is insufficient when
    the argument requires "all cases".

    My argument requires only one case,

    Your argument,
    in order to _be an argument_
    needs to _show_ its result is true.

    It is easy: Consider a function of shrinking sets which remain infinite.
    Then there is an infinite subset or core common to all of them.

    My argument requires only one case,
    best demonstrated with endsegments E(n).
    The intersection of all *infinite* endsegments
    is infinite, because
    they all contain the same natural numbers which
    have not yet been eliminated by
    the process E(n+1) = E(n) \ {n}.

    The intersection of all end.segments is
    the set of natural numbers in each end.segment.
    Each natural number is not.in one or more end.segment.

    That is true but wrong in case of infinite endsegments which are
    infinite because they have not lost all natural numbers. Why else should
    they be infinite?

    That creates a problem (but for only you).
    Your attempt to fix the problem involves
    a change of the definition of intersection, or
    of natural number, or of something else.

    Not at all.

    Changing what you think "infinite" means
    from what we mean by "very large finite"
    to what we mean by "infinite"

    No. Infinite means infinite. All infinite endsegments cotain more than
    any finite set of numbers.

    Regards, WM

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  • From WM@21:1/5 to joes on Tue Oct 8 12:46:01 2024
    On 07.10.2024 17:10, joes wrote:
    Am Mon, 07 Oct 2024 10:47:25 +0200 schrieb WM:

    The set varies but infinitely many elements remain the same. A shrinking
    infinite set which remains infinite has an infinite core.
    Here is your essential misunderstanding: there is no mysterious Something that makes a set infinite. It is infinite because it is not finite, has
    no natural number as its size.

    Why has it no such number? Because infinitely many natural numbers are contained. This is true for all infinite sets of the function. Therefore
    they cannot have lost all numbers.

    Regards, WM

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  • From WM@21:1/5 to Alan Mackenzie on Tue Oct 8 12:40:26 2024
    On 08.10.2024 12:04, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    All unit fractions are points with uncounably many points between each
    pair.

    Yes, OK.

    Hence all must be visible including the point next to zero, but they
    are not.

    There is no point next to zero.

    Points either are or are not. The points that are include one point next
    to zero.
    A shrinking infinite set which remains infinite has an infinite core.

    Again, no. There is no such thing as a "core", here. Each of these sets >>> has an infinitude of elements. No element is in all of these sets.

    Try to think better. A function of sets which are losing some elements
    but remain infinite, have the same infinite core.

    That is untrue. For any element which you assert is in the "core", I
    can give one of these sets which does not contain that element.

    Of course, the core is dark.

    The
    "core" is thus empty.

    The infinite sets contain what? No natural numbers? Natural numbers
    dancing around, sometimes being in a set, sometimes not? An empty
    intersection requires that the infinite sets have different elements.

    That argument is absolutely definite, a logical necessity. If you
    cannot understand it, ....

    It wasn't an argument, it was a bare statement, devoid of any supporting argument.

    Shrinking sets which remain infinite have not lost all elements.

    I understand it full well, and I understand that it's
    mistaken.

    Impossible. You don't understand that all sets are infinite and cannot
    have lost all elements.

    Regards, WM

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  • From WM@21:1/5 to joes on Tue Oct 8 12:51:03 2024
    On 07.10.2024 17:18, joes wrote:
    Am Mon, 07 Oct 2024 11:08:33 +0200 schrieb WM:
    On 07.10.2024 10:05, joes wrote:
    Am Mon, 07 Oct 2024 09:41:23 +0200 schrieb WM:
    On 06.10.2024 17:48, Alan Mackenzie wrote:
    even an unbounded sequence does not get longer when shifted by one
    step.
    Nor does it get shorter, it stays infinite.
    It keeps all its elements but not more.
    „More” being a different kind of infinity, namely at least uncountable.

    Nonsense.

    All ω+k are equally infinite.

    Nonsense.

    Bijection is not about completeness, countability is.
    Bijective means injective and surjective.
    Exactly, which is the case for every finite subset.

    Of course stopping after a finite number, which potential infinity
    seems to mean, is not „complete” in that sense. Hilbert’s Hotel is >>> actually infinite, it already holds infinite guests.
    Name them by all the natural numbers. Then no further guest can appear.
    It can, if I begin numbering with 2. The cardinality of N\{1} can’t be finite.

    Cardinality is nonsense.

    All of them can at once move to the next room,
    All rooms are enumerated by all the natural numbers. Hence there is no
    chance to move. Only in potential infinity there is.
    Huh? They are all fixed, we can move them „rigidly”.

    That shows my point. Infinite sets can be moved.
    0.999...999 moved gives 9.99...9990.
    Another point is this: [0, 1) moved gives (0, 1].

    Regards, WM

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  • From WM@21:1/5 to joes on Tue Oct 8 13:29:46 2024
    On 07.10.2024 17:19, joes wrote:
    Am Mon, 07 Oct 2024 11:51:43 +0200 schrieb WM:

    There is no smallest unit fraction.
    If there are only fixed points, then there is a point such that between
    it and zero there is no further point.
    How do you imagine that?

    One of discrete points is always next to zero.

    It has a finite distance from 0.

    Of course, but this point cannot be found.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Tue Oct 8 13:33:19 2024
    On 08.10.2024 02:53, Richard Damon wrote:

    His view is that if the values of the existing unit fractions exist, and
    we travel up the line from the negative side in increasing value, it
    only make sense that there should be a "first" point we reach.

    The concept, on the face of it, seems logical,

    of course, it is logical.

    it just is a fact that it
    doesn't work, and that is in part because of some of the strange
    properties that trying to imagine a realized infinity creates.

    This property is darkness. Without dark elements actual or realized
    infinity cannot exist.

    Regards, WM

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  • From Richard Damon@21:1/5 to All on Tue Oct 8 08:13:12 2024
    On 10/8/24 4:28 AM, WM wrote:
    On 07.10.2024 13:08, Richard Damon wrote:
    On 10/7/24 4:53 AM, WM wrote:

    The actual points are not "dark" but defined.

    All unit fractios are such points. Each one is a singleton adhering
    to the rules of geometry. Therefore each one including the smallest
    oe could be found unless it was dark.

    Nope, the problem is you "rule of geometry" that there must be a
    smallest (that isn't 0) doesn't actually exist.

    The rule of geometry is that every point exists.

    Note, "Geometry" says nothing about "adjacent points",

    So it is. It simply says that a single point exists or does not exist, independent of any other point. Hence the first existing point can be
    seen unless it is dark.

    Regards, WM

    Nope, first because "existing" doesn't mean what you want, and with its
    actual definion, there isn't necessarily a "first", because points on a
    line don't have a property of "next" since they have the property of
    being "dense" which says that there is nothing like next.

    Note, "Geometry" doesn't have the concept of the "open interval", that
    is a concept created in mathematics. In Geometry, all lines have
    endpoints, but you also don't get the equivalent of the pure greater
    than or less than relationships, only greater-than-or-equal and less-than-or-equal.

    So, the "first existing point" can't be seen, not because it is dark,
    but because it doesn't exist as it is a nonsense term created in the
    mind of someone who is ignorant.

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  • From Richard Damon@21:1/5 to All on Tue Oct 8 08:41:12 2024
    On 10/8/24 6:08 AM, WM wrote:
    On 08.10.2024 01:26, FromTheRafters wrote:
    It is infinite if it is not finite.

    But does it go on and on or is it fixed and completed?

    Regards, WM


    which gets us to the problem. If we can see it fixed and complete, it
    wasn't infinite which must go on to infinity, which we can not perceive.

    "Complete" or "Actual" infinity is not something we finite beings can
    handle or perceive, so trying to use "logic" on it doesn't work, because
    the logic is too limited.

    Your ignorance of that fact is what has blown your mind to smithereens.

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Tue Oct 8 08:29:41 2024
    On 10/8/24 6:22 AM, WM wrote:
    On 07.10.2024 18:11, Alan Mackenzie wrote:
    What I should have
    written (WM please take note) is:

    The idea of one countably infinite set being "bigger" than another
    countably infinite set is simply nonsense.

    The idea is supported by the fact that set A as a superset of set B is
    bigger than B. Simply nonsense is the claim that there are as many
    algebraic numbers as prime numbers. For Cantor's enumeration of all
    fractions I have given a simple disproof.

    Regards, WM


    Which just shows that you logic system is based on contradictory
    definitions and has blown itself up in them, because you have a bad
    definition for "size" of an infinite set.

    By your logic, a set can be bigger than a set with just the same number
    of elements. BOOOM

    Simple example, look at the set of the integers {1, 2, 3, 4, ...} and
    the set of the even numbers {2, 4, 6, 8, ...}

    By your logic the even set must be smaller, but we can transform the set
    of integers to a set of the same size by replacing every element with
    twice itself (an operation that can't affect its size) and we get that
    same set of even numbers.

    Thus the set of even numbers (obtained by doubling the integers) is the
    same set as the set of even numbers (obtained by removing the odd
    integers) but is bigger than it.

    Yes, there are other forms of mathematics where the set of even numbers
    is smaller than the set of the integers, but in those mathematics you
    can't do other things, like replace a set with another set of exactly
    the same size by changing all the values, but that isn't your
    mathematics either, yours has just gone BOOM because it got "too full"
    with an infinite set.

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Tue Oct 8 08:35:10 2024
    On 10/8/24 5:54 AM, WM wrote:
    On 07.10.2024 15:19, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    No, even an unbounded sequence does not get longer when shifted by
    one step.

    The concept of "length" appropriate for finite sets doesn't apply to
    infinite sets.

    It is the concept of number of elements. It is appropriate in actual infinity.

    Which has been shown to not exist for us finite beings, as it is too big
    for us to see.


    infinite means "without end" - unendlich.

    Actual infinity means complete. That implies a fixed number.

    Which has been shown to not exist for us finite beings, as it is too big
    for us to see.

    You don't understand that actual infinity is a fixed quantity.

    It may be "fixed" whatever that might mean, but to regard it as a
    "quantity" is more than questionable.

    Fixed means that no element can be added and no element can be lost. The number of nines is fixed. That is an assumption only, but necessary for bijections.

    Yes, it is fixed, at INFINITY, which means there is no end to it, and
    thus we can't add a zero "at the end" which doesn't exist.

    This is why finite beings can't use "actual infinity" because it is too
    big for us to handle.


    Bijection means completeness.

    No.  Bijection just means a 1-1 correspondence between the elements of
    two sets. > Nowhere in that definition is any mention of completeness.

    It also means surjectivity. The preimage is complete by definition.

    No, surjectivity is something else. Yes, every Bijection is also a
    Surjection (both ways)

    The diagonal number _is_ complete.  Remember, we are not constructing it
    tiringly one digit per second, or anything like that.  The entire number
    is defined and simply exists.

    Only when the set of indexes is complete.

    But the completeness is assured due to the induction. We can't actually
    get there ourselves, since we are finite, but we can know it is there.


    Regards, WM


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  • From Richard Damon@21:1/5 to All on Tue Oct 8 08:20:47 2024
    On 10/8/24 4:31 AM, WM wrote:
    On 07.10.2024 13:12, Richard Damon wrote:
    On 10/7/24 4:56 AM, WM wrote:
    On 06.10.2024 19:11, Richard Damon wrote:
    On 10/6/24 9:42 AM, WM wrote:
    On 06.10.2024 04:51, Richard Damon wrote:
    On 10/5/24 2:58 PM, WM wrote:

    Every point is a finite set.

    The fact that we can keep doing that indefinitely, and never reach >>>>>> a point we can't continue, is proof that the concept of "next
    point" doesn't exist

    The concept of point however does exist. Every single point can be
    found unless it is dark.

    And every single point that exists can be found, and that includes
    every point on the "Number Line"

    Find the smallest unit fraction.

    A concept that doesn't exist.


    Except the "Unit Fractions" or the "Natural Numbers" those have gaps
    between the elements, with an "accumulation point" at 0 where the
    Unit Fractions become dense there.

    No. They nowhere become dense: ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 .


    So, what is the maximum density of unit fractions?

    It is zero because every unit fraction is a point, every gap has
    uncountable may points.

    I guess you don't understand what density means?

    The interval from 0.2 (1/5) to 1 has a density of 5 unit fractions per
    0.8 units or 50/8 = 6.25 unit fractions per unit distance.

    ANY interval starting a zero and moving upwards will have infinite
    density, because it has an infinite number of points in it.

    The fact that 1/n - 1/(n+1) > 0 just means that 1/n > 1/(n+1) and thus
    there is always a unit fraction smaller than the one you have.

    The is no lower limit to the value of 1/n - 1/(n+1) except 0

    This limit is what you can see because you cannot see the reality:
    Between all points there are giant gaps of uncountable many points.

    Right, and that includes between ANY unit fraction and zero, so there
    can be no smallest unit fraction.

    You logic just blows itself up to smithereens due to its contradictions.


    Regards, WM




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  • From Richard Damon@21:1/5 to Chris M. Thomasson on Tue Oct 8 08:43:51 2024
    On 10/7/24 9:11 PM, Chris M. Thomasson wrote:
    On 10/7/2024 5:53 PM, Richard Damon wrote:
    On 10/7/24 8:35 PM, Chris M. Thomasson wrote:
    On 10/7/2024 3:58 PM, Richard Damon wrote:
    On 10/7/24 7:44 AM, Alan Mackenzie wrote:
    Richard Damon <richard@damon-family.org> wrote:
    On 10/7/24 7:13 AM, joes wrote:
    Am Mon, 07 Oct 2024 10:13:21 +0200 schrieb WM:
    On 06.10.2024 17:55, joes wrote:
    Am Sun, 06 Oct 2024 17:26:07 +0200 schrieb WM:
    On 06.10.2024 16:52, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    This idea of time may be what misleads the mathematically >>>>>>>>>>> less adept
    into believing that 0.999... < 1.
    That is true even in actual infinity.
    We can add 9 to 0.999...999 to obtain 9.999...999. But
    multiplying
    0.999...999 by 10 or, what is the same, shifting the digits 9 >>>>>>>>>> by one
    step to the left-hand side, does not increase their number but >>>>>>>>>> leaves
    it constant: 9.99...9990.
    10*0.999...999 = 9.99...9990 = 9 + 0.99...9990 < 9 +
    0.999...999 ==>
    9*0.999...999 < 9 as it should be.
    In actual infinity, there is no last 9 (that would not be
    infinite).
    Actual means all, but not more. This implies a last before ω. The >>>>>>>> infinity means an end cannot be determined. It is produced by
    the dark
    numbers.
    Actually infinite means infinite, which doesn’t change when you >>>>>>> add or
    subtract a finite number.


    Actual infinity doesn't exist for us finite beings.

    English language tip: The "Actually" in that sentence was not
    attached to
    the word "infinite", it meant something like "This is really true:".

    But all his reference to the word "Actually" are part of his trying
    to define the term "Actual Infinity".


    Anyhow, what do you mean when you say that "actual infinity doesn't
    exist"?  I think we established over the weekend that for a
    mathematical
    entity not to exist, it must cause a contradiction.  Or something like >>>>> that.

    So what contradiction would the existence of actual infinity cause?


    It implies that there exists a first positive real, rational number
    or unit fraction for one (at least the way WM uses it).

    A first unit fraction would be 1/1? :^) However this is in the very
    _strict_ realm of unit fractions. WM seems to like to mix and match
    realms. Not sure why he thinks there is a smallest unit fraction...
    Anyway, shit happens.

    No, because he IS specifying the direction of counting, and is trying
    to count from the "end" that doesn't have an end.

    Very strange. Since there is no smallest unit fraction, trying to count
    from the "smallest" up is moronic to me. Humm...

    Yes, exactly, and is based on his mis-application of insufficient logic
    to the system.

    His mind just can't conceive of the fact that there are things bigger
    than he can think fully about, so it thinks nothing about them.



    His view is that if the values of the existing unit fractions exist,
    and we travel up the line from the negative side in increasing value,
    it on.y make sense that there should be a "first" point we reach.

    The concept, on the face of it, seems logical, it just is a fact that
    it doesn't work, and that is in part because of some of the strange
    properties that trying to imagine a realized infinity creates.


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    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Tue Oct 8 08:46:00 2024
    On 10/8/24 7:33 AM, WM wrote:
    On 08.10.2024 02:53, Richard Damon wrote:

    His view is that if the values of the existing unit fractions exist,
    and we travel up the line from the negative side in increasing value,
    it only make sense that there should be a "first" point we reach.

    The concept, on the face of it, seems logical,

    of course, it is logical.

    No, it is erroneous, but based on something that might SEEM logical, but
    has a flaw in it due to an incorrect basic assumption


    it just is a fact that it doesn't work, and that is in part because of
    some of the strange properties that trying to imagine a realized
    infinity creates.

    This property is darkness. Without dark elements actual or realized
    infinity cannot exist.

    No, darkness doesn't exist, just as actual infinity is unreachable by
    finite beings.

    Your neglect of this fact has just made you insain and blown up your
    logic system.


    Regards, WM


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  • From Moebius@21:1/5 to All on Tue Oct 8 14:44:43 2024
    Am 08.10.2024 um 12:04 schrieb Alan Mackenzie:
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 07.10.2024 14:11, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    A shrinking infinite set which remains infinite has an infinite core.

    He's talking about the infinitely many infinite "endsegments" (of
    natural numbers) here. (He always comes back to this topic.)

    Say, E_n := {n, n+1, n+2, n+3, ...} (n e IN)

    Then clearly

    (a) {E_n : n e IN} is infinite
    (b) An e IN: E_n is infinite
    (c) INTERSECTION_(n e IN) E_n = {}.

    Not so in Mückenheims world. (He claims that there "have to be" E_n's
    which are not infinit, if INTERSECTION_(n e IN) E_n = {}. <facepalm>.)

    Again, no. There is no such thing as a "core", here. Each of these sets >>> has an infinitude of elements. No element is in all of these sets.

    Right.

    Try to think better. A function of sets which are losing some elements
    but remain infinite, have the same infinite core.

    That is untrue. For any element which you assert is in the "core", I
    can give one of these sets which does not contain that element. The
    "core" is thus empty.

    Right.

    That argument is absolutely definite, a logical necessity.

    Which argument? :-P

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    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to Alan Mackenzie on Tue Oct 8 08:48:07 2024
    On 10/8/24 5:42 AM, Alan Mackenzie wrote:
    Richard Damon <richard@damon-family.org> wrote:
    On 10/7/24 7:44 AM, Alan Mackenzie wrote:
    Richard Damon <richard@damon-family.org> wrote:
    On 10/7/24 7:13 AM, joes wrote:
    Am Mon, 07 Oct 2024 10:13:21 +0200 schrieb WM:
    On 06.10.2024 17:55, joes wrote:
    Am Sun, 06 Oct 2024 17:26:07 +0200 schrieb WM:
    On 06.10.2024 16:52, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    This idea of time may be what misleads the mathematically less adept >>>>>>>>> into believing that 0.999... < 1.
    That is true even in actual infinity.
    We can add 9 to 0.999...999 to obtain 9.999...999. But multiplying >>>>>>>> 0.999...999 by 10 or, what is the same, shifting the digits 9 by one >>>>>>>> step to the left-hand side, does not increase their number but leaves >>>>>>>> it constant: 9.99...9990.
    10*0.999...999 = 9.99...9990 = 9 + 0.99...9990 < 9 + 0.999...999 ==> >>>>>>>> 9*0.999...999 < 9 as it should be.
    In actual infinity, there is no last 9 (that would not be infinite). >>>>>> Actual means all, but not more. This implies a last before ω. The >>>>>> infinity means an end cannot be determined. It is produced by the dark >>>>>> numbers.
    Actually infinite means infinite, which doesn’t change when you add or >>>>> subtract a finite number.


    Actual infinity doesn't exist for us finite beings.

    English language tip: The "Actually" in that sentence was not attached to >>> the word "infinite", it meant something like "This is really true:".

    But all his reference to the word "Actually" are part of his trying to
    define the term "Actual Infinity".

    OK, maybe you're right, there. The semantics are a bit ambiguous. Joes
    is not a native English speaker. Apologies to Joes.

    Anyhow, what do you mean when you say that "actual infinity doesn't
    exist"? I think we established over the weekend that for a mathematical >>> entity not to exist, it must cause a contradiction. Or something like
    that.

    So what contradiction would the existence of actual infinity cause?

    It implies that there exists a first positive real, rational number or
    unit fraction for one (at least the way WM uses it).

    Whoa! There're rather a lot of argument steps missing there. Just
    because WM asserts the existence of both actual infinity and a first
    strictly positive unit fraction doesn't mean the one implies the other.


    It does in his logic, which is all that matters to him.

    Yes, it is a wrong conclusion, but that error is based on his initial assumption that something could be used that isn't available as a understandable entity to us finite beings.

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to Moebius on Tue Oct 8 08:57:56 2024
    On 10/8/24 3:29 AM, Moebius wrote:
    Am 08.10.2024 um 02:38 schrieb Chris M. Thomasson:
    On 10/7/2024 4:01 PM, Richard Damon wrote:

    I am allowing that an INFINITE being MIGHT be able to comprehend
    something like an actual infinity. But this can not possibly be done
    by a finite being.

    It can.

    This idiot should read Peter Suber's Infinite Reflections:

    "Conclusion

    Properly understood, the idea of a completed infinity is no longer a
    problem in mathematics or philosophy. It is perfectly intelligible and coherent. Perhaps it cannot be imagined but it can be conceived; it is
    not reserved for infinite omniscience, but knowable by finite humanity;
    it may contradict intuition, but it does not contradict itself. To
    conceive it adequately we need not enumerate or visualize infinitely
    many objects, but merely understand self-nesting. We have an actual,
    positive idea of it, or at least with training we can have one; we are
    not limited to the idea of finitude and its negation. In fact, it is at
    least as plausible to think that we understand finitude as the negation
    of infinitude as the other way around. The world of the infinite is not barred to exploration by the equivalent of sea monsters and tempests; it
    is barred by the equivalent of motion sickness. The world of the
    infinite is already open for exploration, but to embark we must unlearn
    our finitistic intuitions which instill fear and confusion by making
    some consistent and demonstrable results about the infinite literally counter-intuitive. Exploration itself will create an alternative set of intuitions which make us more susceptible to the feeling which Kant
    called the sublime. Longer acquaintance will confirm Spinoza's
    conclusion that the secret of joy is to love something infinite."

    Source: http://legacy.earlham.edu/~peters/writing/infinity.htm

    Well, us as finite beings know that there is not a largest natural number... That right there is a basic understanding of the infinite:
    Fair enough?

    Right.

    Which just says that it is something we can understand to exist, but not understand itself.

    It is like it is behind an impenetrable glass wall so we can not touch
    it or feel it, but just dimly observe it.

    Such a thing doesn't exist for us to use in our logic, so effectively
    doesn't exist execpt to convince us that there are things beyond our understanding.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Alan Mackenzie@21:1/5 to Richard Damon on Tue Oct 8 13:11:54 2024
    Richard Damon <richard@damon-family.org> wrote:
    On 10/8/24 5:42 AM, Alan Mackenzie wrote:
    Richard Damon <richard@damon-family.org> wrote:
    On 10/7/24 7:44 AM, Alan Mackenzie wrote:
    Richard Damon <richard@damon-family.org> wrote:
    On 10/7/24 7:13 AM, joes wrote:
    Am Mon, 07 Oct 2024 10:13:21 +0200 schrieb WM:
    On 06.10.2024 17:55, joes wrote:
    Am Sun, 06 Oct 2024 17:26:07 +0200 schrieb WM:
    On 06.10.2024 16:52, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    This idea of time may be what misleads the mathematically
    less adept into believing that 0.999... < 1.
    That is true even in actual infinity. We can add 9 to
    0.999...999 to obtain 9.999...999. But multiplying 0.999...999 >>>>>>>>> by 10 or, what is the same, shifting the digits 9 by one step >>>>>>>>> to the left-hand side, does not increase their number but
    leaves it constant: 9.99...9990. 10*0.999...999 = 9.99...9990 >>>>>>>>> = 9 + 0.99...9990 < 9 + 0.999...999 ==> 9*0.999...999 < 9 as >>>>>>>>> it should be.
    In actual infinity, there is no last 9 (that would not be
    infinite).
    Actual means all, but not more. This implies a last before ω.
    The infinity means an end cannot be determined. It is produced
    by the dark numbers.
    Actually infinite means infinite, which doesn’t change when you
    add or subtract a finite number.


    Actual infinity doesn't exist for us finite beings.

    English language tip: The "Actually" in that sentence was not attached to >>>> the word "infinite", it meant something like "This is really true:".

    But all his reference to the word "Actually" are part of his trying to
    define the term "Actual Infinity".

    OK, maybe you're right, there. The semantics are a bit ambiguous. Joes
    is not a native English speaker. Apologies to Joes.

    Anyhow, what do you mean when you say that "actual infinity doesn't
    exist"? I think we established over the weekend that for a mathematical >>>> entity not to exist, it must cause a contradiction. Or something like >>>> that.

    So what contradiction would the existence of actual infinity cause?

    It implies that there exists a first positive real, rational number or
    unit fraction for one (at least the way WM uses it).

    Whoa! There're rather a lot of argument steps missing there. Just
    because WM asserts the existence of both actual infinity and a first
    strictly positive unit fraction doesn't mean the one implies the other.


    It does in his logic, which is all that matters to him.

    Were we talking about WM's "logic", just there? I don't think I was.

    Yes, it is a wrong conclusion, but that error is based on his initial assumption that something could be used that isn't available as a understandable entity to us finite beings.

    I think infinity is understandable. I think I understand it. My
    position is that the distinction between "potential infinity" and "actual infinity" is bogus. It makes no difference in mathematics, which is
    probably why the terms have vanished from mathematical discourse.

    --
    Alan Mackenzie (Nuremberg, Germany).

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  • From joes@21:1/5 to All on Tue Oct 8 13:24:08 2024
    Am Tue, 08 Oct 2024 12:51:03 +0200 schrieb WM:
    On 07.10.2024 17:18, joes wrote:
    Am Mon, 07 Oct 2024 11:08:33 +0200 schrieb WM:
    On 07.10.2024 10:05, joes wrote:
    Am Mon, 07 Oct 2024 09:41:23 +0200 schrieb WM:
    On 06.10.2024 17:48, Alan Mackenzie wrote:
    even an unbounded sequence does not get longer when shifted by one
    step.
    Nor does it get shorter, it stays infinite.
    It keeps all its elements but not more.
    „More” being a different kind of infinity, namely at least uncountable.
    Nonsense.
    Only according to your broken concept of cardinality, by which N u {a}
    is „bigger” than N, and N\{1} u {a} can’t even be compared.

    All ω+k are equally infinite.
    Nonsense.
    I believe it is called the order type.

    Bijection is not about completeness, countability is.

    Of course stopping after a finite number, which potential infinity
    seems to mean, is not „complete” in that sense. Hilbert’s Hotel is >>>> actually infinite, it already holds infinite guests.
    Name them by all the natural numbers. Then no further guest can
    appear.
    It can, if I begin numbering with 2. The cardinality of N\{1} can’t be
    finite.
    Cardinality is nonsense.
    Isn’t N\{1} finite? It has ω-1 elements.

    All of them can at once move to the next room,
    All rooms are enumerated by all the natural numbers. Hence there is no
    chance to move. Only in potential infinity there is.
    Huh? They are all fixed, we can move them „rigidly”.
    That shows my point. Infinite sets can be moved. 0.999...999 moved gives 9.99...9990.
    You have not indicated what this notation means. Where does the zero come
    from?

    Another point is this: [0, 1) moved gives (0, 1].
    Can you generalise this?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to All on Tue Oct 8 13:18:20 2024
    Am Tue, 08 Oct 2024 13:29:46 +0200 schrieb WM:
    On 07.10.2024 17:19, joes wrote:
    Am Mon, 07 Oct 2024 11:51:43 +0200 schrieb WM:

    There is no smallest unit fraction.
    If there are only fixed points, then there is a point such that
    between it and zero there is no further point.
    How do you imagine that?
    One of discrete points is always next to zero.
    Why is there no closer point?

    It has a finite distance from 0.
    Of course, but this point cannot be found.
    What does this mean, it cannot be known?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to All on Tue Oct 8 13:26:10 2024
    Am Tue, 08 Oct 2024 12:46:01 +0200 schrieb WM:
    On 07.10.2024 17:10, joes wrote:
    Am Mon, 07 Oct 2024 10:47:25 +0200 schrieb WM:

    The set varies but infinitely many elements remain the same. A
    shrinking infinite set which remains infinite has an infinite core.
    Here is your essential misunderstanding: there is no mysterious
    Something that makes a set infinite. It is infinite because it is not
    finite, has no natural number as its size.
    Why has it no such number?
    Because naturals are not infinite.

    Because infinitely many natural numbers are
    contained. This is true for all infinite sets of the function. Therefore
    they cannot have lost all numbers.
    What does „they” refer to in the last sentence? There is no natural number which has no successors.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From Richard Damon@21:1/5 to Alan Mackenzie on Tue Oct 8 09:31:18 2024
    On 10/8/24 9:11 AM, Alan Mackenzie wrote:
    Richard Damon <richard@damon-family.org> wrote:
    On 10/8/24 5:42 AM, Alan Mackenzie wrote:
    Richard Damon <richard@damon-family.org> wrote:
    On 10/7/24 7:44 AM, Alan Mackenzie wrote:
    Richard Damon <richard@damon-family.org> wrote:
    On 10/7/24 7:13 AM, joes wrote:
    Am Mon, 07 Oct 2024 10:13:21 +0200 schrieb WM:
    On 06.10.2024 17:55, joes wrote:
    Am Sun, 06 Oct 2024 17:26:07 +0200 schrieb WM:
    On 06.10.2024 16:52, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    This idea of time may be what misleads the mathematically >>>>>>>>>>> less adept into believing that 0.999... < 1.
    That is true even in actual infinity. We can add 9 to
    0.999...999 to obtain 9.999...999. But multiplying 0.999...999 >>>>>>>>>> by 10 or, what is the same, shifting the digits 9 by one step >>>>>>>>>> to the left-hand side, does not increase their number but
    leaves it constant: 9.99...9990. 10*0.999...999 = 9.99...9990 >>>>>>>>>> = 9 + 0.99...9990 < 9 + 0.999...999 ==> 9*0.999...999 < 9 as >>>>>>>>>> it should be.
    In actual infinity, there is no last 9 (that would not be
    infinite).
    Actual means all, but not more. This implies a last before ω. >>>>>>>> The infinity means an end cannot be determined. It is produced >>>>>>>> by the dark numbers.
    Actually infinite means infinite, which doesn’t change when you >>>>>>> add or subtract a finite number.


    Actual infinity doesn't exist for us finite beings.

    English language tip: The "Actually" in that sentence was not attached to >>>>> the word "infinite", it meant something like "This is really true:".

    But all his reference to the word "Actually" are part of his trying to >>>> define the term "Actual Infinity".

    OK, maybe you're right, there. The semantics are a bit ambiguous. Joes >>> is not a native English speaker. Apologies to Joes.

    Anyhow, what do you mean when you say that "actual infinity doesn't
    exist"? I think we established over the weekend that for a mathematical >>>>> entity not to exist, it must cause a contradiction. Or something like >>>>> that.

    So what contradiction would the existence of actual infinity cause?

    It implies that there exists a first positive real, rational number or >>>> unit fraction for one (at least the way WM uses it).

    Whoa! There're rather a lot of argument steps missing there. Just
    because WM asserts the existence of both actual infinity and a first
    strictly positive unit fraction doesn't mean the one implies the other.


    It does in his logic, which is all that matters to him.

    Were we talking about WM's "logic", just there? I don't think I was.

    But my quote came from his logic.


    Yes, it is a wrong conclusion, but that error is based on his initial
    assumption that something could be used that isn't available as a
    understandable entity to us finite beings.

    I think infinity is understandable. I think I understand it. My
    position is that the distinction between "potential infinity" and "actual infinity" is bogus. It makes no difference in mathematics, which is
    probably why the terms have vanished from mathematical discourse.


    The difference is that in his "actual infinity" the generation process
    is complete and nothing can change.

    The problem is then that the objects are "fixed", The problem here is
    that our concepts of such don't really handle "infinite" objects, we can
    think about them "going on to infinity" and it sort of fades out of view
    in the distance, but since we have never really sensed "infinity" we
    have no way to actually fully understand it.

    When we understand the "potential infinity" we see that it goes on
    forever, and don't feel a need to get there to see it, since we know we
    can't.

    In presuming it is fixed, he presumes he can get to that infinite point, because everything he knows is finite (just like all we have actually
    seen is finite) and his logic is based on that intuition.

    WM's logic seems to be based on the presumption that:

    If actual infinity exists ... (with the assumption that if it exists, if follows the logic we know)

    Since such a thing does NOT exist, at least as far as our logic can
    handle, NONE of his conclusions apply, since the logic was based on a
    untrue premise.

    In WM's mind, anything that is "fixed" has ends, but an infinite thing
    doesn't have all those ends

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  • From Richard Damon@21:1/5 to All on Tue Oct 8 09:36:44 2024
    On 10/8/24 6:03 AM, WM wrote:
    On 08.10.2024 09:30, Moebius wrote:
    Am 08.10.2024 um 09:29 schrieb Moebius:

    Properly understood, the idea of a completed infinity is no longer a
    problem in mathematics or philosophy. It is perfectly intelligible
    and coherent.

    Yes, but it is completed and therefore fixed. The number of nines in
    0.999... does not change when shifted by one step.

    Regards, WM


    But it must be infinite, and thus not have an "end" and thus there is no
    "room" to add the zero.

    All you are doing is proving that you concept of "completed infinity"
    isn't actually infinite.

    This is why it is said that completed/actual infinity doesn't exist,
    because we are unable to understand how it works by comparing to to
    things we actually do understand.

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  • From joes@21:1/5 to All on Tue Oct 8 13:36:48 2024
    Am Tue, 08 Oct 2024 12:40:26 +0200 schrieb WM:
    On 08.10.2024 12:04, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    Hence all must be visible including the point next to zero, but they
    are not.
    There is no point next to zero.
    Points either are or are not. The points that are include one point next
    to zero.
    But not the point inbetween?

    A shrinking infinite set which remains infinite has an infinite
    core.
    In the limit, it is empty.
    Again, no. There is no such thing as a "core", here. Each of these
    sets has an infinitude of elements. No element is in all of these
    sets.
    Try to think better. A function of sets which are losing some elements
    but remain infinite, have the same infinite core.
    That is untrue. For any element which you assert is in the "core", I
    can give one of these sets which does not contain that element.
    Of course, the core is dark.
    The "core" is thus empty.
    The infinite sets contain what? No natural numbers? Natural numbers
    dancing around, sometimes being in a set, sometimes not? An empty intersection requires that the infinite sets have different elements.
    These are infinite sets: {2, 3, 4, …}, {3, 4, 5, …}, {4, 5, 6, …}.
    They contain all naturals larger than a given one, and nothing else.
    Every natural is part of a finite number of these sets (namely, its
    own value is that number). The set {n+1, n+2, …} does not contain n
    and is still infinite; there are (trivially) infinitely many further
    such sets. All of them differ.

    That argument is absolutely definite, a logical necessity. If you
    cannot understand it, ....
    It wasn't an argument, it was a bare statement, devoid of any
    supporting argument.
    Shrinking sets which remain infinite have not lost all elements.
    This goes for every single of these sets, but not for their infinite(!) intersection. If you imagine this as potential infinity, you are
    really thinking about stopping at some finite number. This „process”
    is not allowed to be stopped.

    I understand it full well, and I understand that it's mistaken.
    Impossible. You don't understand that all sets are infinite and cannot
    have lost all elements.
    That is not very difficult to understand. We are not talking about any
    set of successors of a natural number, though.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From Richard Damon@21:1/5 to All on Tue Oct 8 09:40:49 2024
    On 10/8/24 4:34 AM, WM wrote:
    On 07.10.2024 13:13, joes wrote:
    Am Mon, 07 Oct 2024 10:13:21 +0200 schrieb WM:

    Actual means all, but not more. This implies a last before ω. The
    infinity means an end cannot be determined. It is produced by the dark
    numbers.
    Actually infinite means infinite, which doesn’t change when you add or
    subtract a finite number.

    It doesn’t change when you add or subtract a definable number.

    Regards, WM


    And all finite numbers are definable, so no difference.

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  • From Richard Damon@21:1/5 to All on Tue Oct 8 09:47:09 2024
    On 10/8/24 6:46 AM, WM wrote:
    On 07.10.2024 17:10, joes wrote:
    Am Mon, 07 Oct 2024 10:47:25 +0200 schrieb WM:

    The set varies but infinitely many elements remain the same. A shrinking >>> infinite set which remains infinite has an infinite core.
    Here is your essential misunderstanding: there is no mysterious Something
    that makes a set infinite. It is infinite because it is not finite, has
    no natural number as its size.

    Why has it no such number? Because infinitely many natural numbers are contained. This is true for all infinite sets of the function. Therefore
    they cannot have lost all numbers.

    Regards, WM



    Because finite is not infinite.

    Your logic is just based on contradictions.

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  • From Richard Damon@21:1/5 to All on Tue Oct 8 09:45:38 2024
    On 10/8/24 4:48 AM, WM wrote:
    On 07.10.2024 14:11, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    You have not understood that all unit fractions are separate points on
    the positive axis.

    I understand that full well.

    Then you understand that every point, if existing, is independent of the others. All unit fractions are points with uncounably many points
    between each pair. Hence all must be visible including the point next to zero, but they are not.

    Just because the concept of points being next to point is just nonsense
    and contradictory.

    A shrinking infinite set which remains infinite has an infinite core.

    Again, no.  There is no such thing as a "core", here.  Each of these sets >> has an infinitude of elements.  No element is in all of these sets.

    Try to think better. A function of sets which are losing some elements
    but remain infinite, have the same infinite core. That argument is
    absolutely definite, a logical necessity. If you cannot understand it,
    then it is useless to continue this discussion.


    Nope, YOUR logic is deficient, and since you insist on holding to it,
    you are getting nowhere.

    Regards, WM


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  • From Richard Damon@21:1/5 to All on Tue Oct 8 09:43:52 2024
    On 10/8/24 4:37 AM, WM wrote:
    On 07.10.2024 13:20, Richard Damon wrote:
    On 10/7/24 5:51 AM, WM wrote:
    On 07.10.2024 11:36, FromTheRafters wrote:
    WM formulated the question :
    On 06.10.2024 19:03, FromTheRafters wrote:
    A set is a collection of well-defined objects, meaning we must be
    able to determine if an element belongs to a particulr set.

    But you can't determine the smallest unit fraction although it is a
    singleton set, a point on the real axis.

    There is no smallest unit fraction.

    If there are only fixed points, then there is a point such that
    between it and zero there is no further point.

    Nope, not if you have an INFINITE set of fixed points.

    The individual point is independent of how many others are existing.

    Yes, but the existance of the other point shows that this is not the "first"


    The problem is we can't have an infinite set of fixed points, as we
    are finite.

    That is just under investigation.

    And thus can't be assumed true.

    That or you need to take the contradiction you generate as proof of the
    answer.


    So, your "actual infinity" is something beyond what we can have, so it
    doesn't exist for us, and logic that assumes it is just breaks.

    Then set theory is outdated.

    Nope, your concept of infinity is broken.

    Set theory shows us how to understand infinity.

    Your ideas just try to convince us we can't.

    so YOUR idea is the one that is outdated. (as apparently shown severl
    millennia ago)


    Regards, WM




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  • From Richard Damon@21:1/5 to All on Tue Oct 8 09:51:14 2024
    On 10/8/24 6:18 AM, WM wrote:
    On 07.10.2024 20:05, Jim Burns wrote:
    On 10/5/2024 3:33 PM, WM wrote:
    On 05.10.2024 20:12, Jim Burns wrote:
    On 10/5/2024 5:43 AM, WM wrote:

    [In] many cases it is correct.

    "Many cases" is insufficient when
    the argument requires "all cases".

    My argument requires only one case,

    Your argument,
    in order to _be an argument_
    needs to _show_ its result is true.

    It is easy: Consider a function of shrinking sets which remain infinite.
    Then there is an infinite subset or core common to all of them.

    Right, which shows that with infinte sets, subsets and their superset
    can be of the "same" size.


    My argument requires only one case,
    best demonstrated with endsegments E(n).
    The intersection of all *infinite* endsegments
    is infinite, because
    they all contain the same natural numbers which
    have not yet been eliminated by
    the process E(n+1) = E(n) \ {n}.

    The intersection of all end.segments is
    the set of natural numbers in each end.segment.
    Each natural number is not.in one or more end.segment.

    That is true but wrong in case of infinite endsegments which are
    infinite because they have not lost all natural numbers. Why else should
    they be infinite?

    But that just shows that each of your FISONs is not an infinite set.

    There may be an infinite set of FISONs, but none of them are infinite in
    and of themselves.

    WHen talking of natural number segments, there is no such thing as a
    infinite endpoint, just that you have segments that don't HAVE and
    (upper) endpoint.


    That creates a problem (but for only you).
    Your attempt to fix the problem involves
    a change of the definition of intersection, or
    of natural number, or of something else.

    Not at all.

    Changing what you think "infinite" means
    from what we mean by "very large finite"
    to what we mean by "infinite"

    No. Infinite means infinite. All infinite endsegments cotain more than
    any finite set of numbers.

    Regards, WM



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  • From Alan Mackenzie@21:1/5 to Richard Damon on Tue Oct 8 14:00:20 2024
    Richard Damon <richard@damon-family.org> wrote:
    On 10/8/24 9:11 AM, Alan Mackenzie wrote:
    Richard Damon <richard@damon-family.org> wrote:
    On 10/8/24 5:42 AM, Alan Mackenzie wrote:
    Richard Damon <richard@damon-family.org> wrote:
    On 10/7/24 7:44 AM, Alan Mackenzie wrote:
    Richard Damon <richard@damon-family.org> wrote:
    On 10/7/24 7:13 AM, joes wrote:
    Am Mon, 07 Oct 2024 10:13:21 +0200 schrieb WM:
    On 06.10.2024 17:55, joes wrote:
    Am Sun, 06 Oct 2024 17:26:07 +0200 schrieb WM:
    On 06.10.2024 16:52, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    This idea of time may be what misleads the mathematically >>>>>>>>>>>> less adept into believing that 0.999... < 1.
    That is true even in actual infinity. We can add 9 to
    0.999...999 to obtain 9.999...999. But multiplying 0.999...999 >>>>>>>>>>> by 10 or, what is the same, shifting the digits 9 by one step >>>>>>>>>>> to the left-hand side, does not increase their number but >>>>>>>>>>> leaves it constant: 9.99...9990. 10*0.999...999 = 9.99...9990 >>>>>>>>>>> = 9 + 0.99...9990 < 9 + 0.999...999 ==> 9*0.999...999 < 9 as >>>>>>>>>>> it should be.
    In actual infinity, there is no last 9 (that would not be
    infinite).
    Actual means all, but not more. This implies a last before ω. >>>>>>>>> The infinity means an end cannot be determined. It is produced >>>>>>>>> by the dark numbers.
    Actually infinite means infinite, which doesn’t change when you >>>>>>>> add or subtract a finite number.


    Actual infinity doesn't exist for us finite beings.

    English language tip: The "Actually" in that sentence was not
    attached to the word "infinite", it meant something like "This is
    really true:".

    But all his reference to the word "Actually" are part of his trying to >>>>> define the term "Actual Infinity".

    OK, maybe you're right, there. The semantics are a bit ambiguous.
    Joes is not a native English speaker. Apologies to Joes.

    Anyhow, what do you mean when you say that "actual infinity
    doesn't exist"? I think we established over the weekend that for
    a mathematical entity not to exist, it must cause a contradiction. >>>>>> Or something like that.

    So what contradiction would the existence of actual infinity cause?

    It implies that there exists a first positive real, rational number or >>>>> unit fraction for one (at least the way WM uses it).

    Whoa! There're rather a lot of argument steps missing there. Just
    because WM asserts the existence of both actual infinity and a first
    strictly positive unit fraction doesn't mean the one implies the other.


    It does in his logic, which is all that matters to him.

    Were we talking about WM's "logic", just there? I don't think I was.

    But my quote came from his logic.

    Ah, OK.

    Yes, it is a wrong conclusion, but that error is based on his initial
    assumption that something could be used that isn't available as a
    understandable entity to us finite beings.

    I think infinity is understandable. I think I understand it. My
    position is that the distinction between "potential infinity" and "actual
    infinity" is bogus. It makes no difference in mathematics, which is
    probably why the terms have vanished from mathematical discourse.

    The difference is that in his "actual infinity" the generation process
    is complete and nothing can change.

    In a sense, the "actual infinity" _is_ the generation process, which is
    fixed and complete.

    The problem is then that the objects are "fixed", The problem here is
    that our concepts of such don't really handle "infinite" objects, we can think about them "going on to infinity" and it sort of fades out of view
    in the distance, but since we have never really sensed "infinity" we
    have no way to actually fully understand it.

    There are lots of things we haven't really sensed that we can understand. Electromagnetic waves outside the visible range, speeds where special relativity is significant, black holes, .... I don't see that infinity
    is all that different.

    When we understand the "potential infinity" we see that it goes on
    forever, and don't feel a need to get there to see it, since we know we can't.

    In presuming it is fixed, he presumes he can get to that infinite point, because everything he knows is finite (just like all we have actually
    seen is finite) and his logic is based on that intuition.

    Yes.

    WM's logic seems to be based on the presumption that:

    If actual infinity exists ... (with the assumption that if it exists, it follows the logic we know)

    Since such a thing does NOT exist, at least as far as our logic can
    handle, NONE of his conclusions apply, since the logic was based on a
    untrue premise.

    His conclusions largely don't apply whether or not "actual infinity"
    exists. It is his deductive steps which are at fault rather than his
    axioms.

    In WM's mind, anything that is "fixed" has ends, but an infinite thing doesn't have all those ends.

    Indeed not.

    --
    Alan Mackenzie (Nuremberg, Germany).

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  • From Richard Damon@21:1/5 to Alan Mackenzie on Tue Oct 8 10:10:05 2024
    On 10/8/24 10:00 AM, Alan Mackenzie wrote:
    Richard Damon <richard@damon-family.org> wrote:
    On 10/8/24 9:11 AM, Alan Mackenzie wrote:
    Richard Damon <richard@damon-family.org> wrote:
    On 10/8/24 5:42 AM, Alan Mackenzie wrote:
    Richard Damon <richard@damon-family.org> wrote:
    On 10/7/24 7:44 AM, Alan Mackenzie wrote:
    Richard Damon <richard@damon-family.org> wrote:
    On 10/7/24 7:13 AM, joes wrote:
    Am Mon, 07 Oct 2024 10:13:21 +0200 schrieb WM:
    On 06.10.2024 17:55, joes wrote:
    Am Sun, 06 Oct 2024 17:26:07 +0200 schrieb WM:
    On 06.10.2024 16:52, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    This idea of time may be what misleads the mathematically >>>>>>>>>>>>> less adept into believing that 0.999... < 1.
    That is true even in actual infinity. We can add 9 to >>>>>>>>>>>> 0.999...999 to obtain 9.999...999. But multiplying 0.999...999 >>>>>>>>>>>> by 10 or, what is the same, shifting the digits 9 by one step >>>>>>>>>>>> to the left-hand side, does not increase their number but >>>>>>>>>>>> leaves it constant: 9.99...9990. 10*0.999...999 = 9.99...9990 >>>>>>>>>>>> = 9 + 0.99...9990 < 9 + 0.999...999 ==> 9*0.999...999 < 9 as >>>>>>>>>>>> it should be.
    In actual infinity, there is no last 9 (that would not be >>>>>>>>>>> infinite).
    Actual means all, but not more. This implies a last before ω. >>>>>>>>>> The infinity means an end cannot be determined. It is produced >>>>>>>>>> by the dark numbers.
    Actually infinite means infinite, which doesn’t change when you >>>>>>>>> add or subtract a finite number.


    Actual infinity doesn't exist for us finite beings.

    English language tip: The "Actually" in that sentence was not
    attached to the word "infinite", it meant something like "This is >>>>>>> really true:".

    But all his reference to the word "Actually" are part of his trying to >>>>>> define the term "Actual Infinity".

    OK, maybe you're right, there. The semantics are a bit ambiguous.
    Joes is not a native English speaker. Apologies to Joes.

    Anyhow, what do you mean when you say that "actual infinity
    doesn't exist"? I think we established over the weekend that for >>>>>>> a mathematical entity not to exist, it must cause a contradiction. >>>>>>> Or something like that.

    So what contradiction would the existence of actual infinity cause?

    It implies that there exists a first positive real, rational number or >>>>>> unit fraction for one (at least the way WM uses it).

    Whoa! There're rather a lot of argument steps missing there. Just
    because WM asserts the existence of both actual infinity and a first >>>>> strictly positive unit fraction doesn't mean the one implies the other.


    It does in his logic, which is all that matters to him.

    Were we talking about WM's "logic", just there? I don't think I was.

    But my quote came from his logic.

    Ah, OK.

    Yes, it is a wrong conclusion, but that error is based on his initial
    assumption that something could be used that isn't available as a
    understandable entity to us finite beings.

    I think infinity is understandable. I think I understand it. My
    position is that the distinction between "potential infinity" and "actual >>> infinity" is bogus. It makes no difference in mathematics, which is
    probably why the terms have vanished from mathematical discourse.

    The difference is that in his "actual infinity" the generation process
    is complete and nothing can change.

    In a sense, the "actual infinity" _is_ the generation process, which is
    fixed and complete.

    But only after that infinite process has completed. Finite beings can't actually SEE that result.


    The problem is then that the objects are "fixed", The problem here is
    that our concepts of such don't really handle "infinite" objects, we can
    think about them "going on to infinity" and it sort of fades out of view
    in the distance, but since we have never really sensed "infinity" we
    have no way to actually fully understand it.

    There are lots of things we haven't really sensed that we can understand. Electromagnetic waves outside the visible range, speeds where special relativity is significant, black holes, .... I don't see that infinity
    is all that different.

    We can understand some of the properties of them, but we don't really understand them.

    We only understand them in the way we can model them by things we do see.

    The problem with the infinite is we have nothing to model it with as a completion, only as a process.


    When we understand the "potential infinity" we see that it goes on
    forever, and don't feel a need to get there to see it, since we know we
    can't.

    In presuming it is fixed, he presumes he can get to that infinite point,
    because everything he knows is finite (just like all we have actually
    seen is finite) and his logic is based on that intuition.

    Yes.

    WM's logic seems to be based on the presumption that:

    If actual infinity exists ... (with the assumption that if it exists, it
    follows the logic we know)

    Since such a thing does NOT exist, at least as far as our logic can
    handle, NONE of his conclusions apply, since the logic was based on a
    untrue premise.

    His conclusions largely don't apply whether or not "actual infinity"
    exists. It is his deductive steps which are at fault rather than his
    axioms.

    It is in the assumption that we can "understand" the actual infinity by
    the logical process of "reality". Real finite things have ends. Real
    infinite things are missing some of the ends, so assuming they are there
    causes the problems.


    In WM's mind, anything that is "fixed" has ends, but an infinite thing
    doesn't have all those ends.

    Indeed not.


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  • From WM@21:1/5 to Richard Damon on Tue Oct 8 16:43:17 2024
    On 08.10.2024 14:13, Richard Damon wrote:

    Note, "Geometry" doesn't have the concept of the "open interval", that
    is a concept created in mathematics. In Geometry, all lines have
    endpoints,

    So it is. Therefore the line going through the set of points has an
    endpoint.

    So, the "first existing point" can't be seen, not because it is dark,
    but because it doesn't exist

    Then the second point would be the first. Of a set of distinct points
    one is the first. In Geometry, all lines have endpoints.

    Regards, WM

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  • From Moebius@21:1/5 to All on Tue Oct 8 17:11:54 2024
    Am 08.10.2024 um 15:11 schrieb Alan Mackenzie:

    I think infinity is understandable. I think I understand it.

    "Conclusion

    Properly understood, the idea of a completed infinity is no longer a
    problem in mathematics or philosophy. It is perfectly intelligible and coherent. Perhaps it cannot be imagined but it can be conceived; it is
    not reserved for infinite omniscience, but knowable by finite humanity;
    it may contradict intuition, but it does not contradict itself. To
    conceive it adequately we need not enumerate or visualize infinitely
    many objects, but merely understand self-nesting. We have an actual,
    positive idea of it, or at least with training we can have one; we are
    not limited to the idea of finitude and its negation. In fact, it is at
    least as plausible to think that we understand finitude as the negation
    of infinitude as the other way around. The world of the infinite is not
    barred to exploration by the equivalent of sea monsters and tempests; it
    is barred by the equivalent of motion sickness. The world of the
    infinite is already open for exploration, but to embark we must unlearn
    our finitistic intuitions which instill fear and confusion by making
    some consistent and demonstrable results about the infinite literally counter-intuitive. Exploration itself will create an alternative set of intuitions which make us more susceptible to the feeling which Kant
    called the sublime. Longer acquaintance will confirm Spinoza's
    conclusion that the secret of joy is to love something infinite."

    (Peter Suber, Infinite Reflections)

    Source: http://legacy.earlham.edu/~peters/writing/infinity.htm

    My position is that the distinction between "potential infinity" and "actual infinity" is bogus. It makes no difference in mathematics, which is
    probably why the terms have vanished from mathematical discourse.

    Not quite. Finitism (if it's not ultrafinitism) is dealing with (or
    allowing for) "potential infinity" instead of "actual infinity".

    "Finitism is a philosophy of mathematics that accepts the existence only
    of finite mathematical objects. It is best understood in comparison to
    the mainstream philosophy of mathematics where infinite mathematical
    objects (e.g., infinite sets) are accepted as existing."


    Source: https://en.wikipedia.org/wiki/Finitism

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  • From WM@21:1/5 to Moebius on Tue Oct 8 17:13:36 2024
    On 08.10.2024 14:44, Moebius wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    That argument is absolutely definite, a logical necessity.

    Which argument?

    The argument is simple. Infinite endsegments have an infinite
    intersection because infinitely many natnumbers are waiting for deletion.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Tue Oct 8 17:16:34 2024
    On 08.10.2024 14:46, Richard Damon wrote:
    On 10/8/24 7:33 AM, WM wrote:
    On 08.10.2024 02:53, Richard Damon wrote:

    His view is that if the values of the existing unit fractions exist,
    and we travel up the line from the negative side in increasing value,
    it only make sense that there should be a "first" point we reach.

    The concept, on the face of it, seems logical,

    of course, it is logical.

    No, it is erroneous, but based on something that might SEEM logical, but
    has a flaw in it due to an incorrect basic assumption

    What assumption is that?

    No, darkness doesn't exist, just as actual infinity is unreachable by
    finite beings.

    Your neglect of this fact

    is based on Cantor's work. But you are right in that actual infinity and
    dark elements are indissolubly connected.

    Regards, WM

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  • From WM@21:1/5 to Alan Mackenzie on Tue Oct 8 17:20:41 2024
    On 08.10.2024 15:11, Alan Mackenzie wrote:

    I think infinity is understandable. I think I understand it. My
    position is that the distinction between "potential infinity" and "actual infinity" is bogus.

    That proves that you don't understand the least about infinity.

    It makes no difference in mathematics,

    The difference is blurred by the leading liars. To recognize it would
    mean to unmask them as being not experts but stupids.

    Regards, WM

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  • From WM@21:1/5 to joes on Tue Oct 8 17:22:35 2024
    On 08.10.2024 15:18, joes wrote:
    Am Tue, 08 Oct 2024 13:29:46 +0200 schrieb WM:
    On 07.10.2024 17:19, joes wrote:
    Am Mon, 07 Oct 2024 11:51:43 +0200 schrieb WM:

    There is no smallest unit fraction.
    If there are only fixed points, then there is a point such that
    between it and zero there is no further point.
    How do you imagine that?
    One of discrete points is always next to zero.
    Why is there no closer point?

    Because the closest is meant.

    > It has a finite distance from 0.
    Of course, but this point cannot be found.
    What does this mean, it cannot be known?

    It is dark, like infinitely many other points.

    Regards, WM


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  • From WM@21:1/5 to joes on Tue Oct 8 17:26:43 2024
    On 08.10.2024 15:24, joes wrote:
    Am Tue, 08 Oct 2024 12:51:03 +0200 schrieb WM:
    On 07.10.2024 17:18, joes wrote:
    Am Mon, 07 Oct 2024 11:08:33 +0200 schrieb WM:
    On 07.10.2024 10:05, joes wrote:
    Am Mon, 07 Oct 2024 09:41:23 +0200 schrieb WM:
    On 06.10.2024 17:48, Alan Mackenzie wrote:
    even an unbounded sequence does not get longer when shifted by one >>>>>> step.
    Nor does it get shorter, it stays infinite.
    It keeps all its elements but not more.
    „More” being a different kind of infinity, namely at least uncountable. >> Nonsense.
    Only according to your broken concept of cardinality, by which N u {a}
    is „bigger” than N, and N\{1} u {a} can’t even be compared.

    All ω+k are equally infinite.
    Nonsense.
    I believe it is called the order type.

    Bijection is not about completeness, countability is.

    Of course stopping after a finite number, which potential infinity
    seems to mean, is not „complete” in that sense. Hilbert’s Hotel is >>>>> actually infinite, it already holds infinite guests.
    Name them by all the natural numbers. Then no further guest can
    appear.
    It can, if I begin numbering with 2. The cardinality of N\{1} can’t be >>> finite.
    Cardinality is nonsense.
    Isn’t N\{1} finite? It has ω-1 elements.

    But after the visble natural numbers the dark domain comes, and that is
    what prevents to see the end (which is dark too).
    That shows my point. Infinite sets can be moved. 0.999...999 moved gives
    9.99...9990.
    You have not indicated what this notation means. Where does the zero come from?

    The last natural index has lost its 9 by shifting to the left-hand side.
    Hence there is nothing remaining.

    Another point is this: [0, 1) moved gives (0, 1].
    Can you generalise this?

    What example do you have in mind?

    Regards, WM

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  • From WM@21:1/5 to joes on Tue Oct 8 17:30:19 2024
    On 08.10.2024 15:26, joes wrote:
    Am Tue, 08 Oct 2024 12:46:01 +0200 schrieb WM:

    Because infinitely many natural numbers are
    contained. This is true for all infinite sets of the function. Therefore
    they cannot have lost all numbers.
    What does „they” refer to in the last sentence?

    All endsegments which have infinitely many natural numbers.

    There is no natural number
    which has no successors.

    Infinite endsegments contain infinitely many numbers and therefore an
    infinite intersection.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Tue Oct 8 17:34:39 2024
    On 08.10.2024 15:36, Richard Damon wrote:
    On 10/8/24 6:03 AM, WM wrote:
    On 08.10.2024 09:30, Moebius wrote:
    Am 08.10.2024 um 09:29 schrieb Moebius:

    Properly understood, the idea of a completed infinity is no longer a
    problem in mathematics or philosophy. It is perfectly intelligible
    and coherent.

    Yes, but it is completed and therefore fixed. The number of nines in
    0.999... does not change when shifted by one step.

    But it must be infinite, and thus not have an "end"

    But it must be complete and therefore in linear order must have an end.

    Regards, WM

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  • From WM@21:1/5 to joes on Tue Oct 8 17:40:50 2024
    On 08.10.2024 15:36, joes wrote:
    Am Tue, 08 Oct 2024 12:40:26 +0200 schrieb WM:
    On 08.10.2024 12:04, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    Hence all must be visible including the point next to zero, but they
    are not.
    There is no point next to zero.
    Points either are or are not. The points that are include one point next
    to zero.
    But not the point inbetween?

    If it exists then this point is next to zero.

    The infinite sets contain what? No natural numbers? Natural numbers
    dancing around, sometimes being in a set, sometimes not? An empty
    intersection requires that the infinite sets have different elements.
    These are infinite sets: {2, 3, 4, …}, {3, 4, 5, …}, {4, 5, 6, …}.
    They contain all naturals larger than a given one, and nothing else.
    Every natural is part of a finite number of these sets (namely, its
    own value is that number). The set {n+1, n+2, …} does not contain n
    and is still infinite; there are (trivially) infinitely many further
    such sets. All of them differ.

    All of them differ by a finite set of numbers (whoich is irrelevant) but contain an infinite set of numbers in common.

    Shrinking sets which remain infinite have not lost all elements.
    This goes for every single of these sets, but not for their infinite(!) intersection.

    If every single set is infinite, then the intersection is infinite too.
    These sets have lost some natural numbers but have kept infinitely many.

    If you imagine this as potential infinity,

    No, in potential infinity there are no endsegments.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Tue Oct 8 17:49:20 2024
    On 08.10.2024 16:10, Richard Damon wrote:

    Real finite things have ends. Real
    infinite things are missing some of the ends, so assuming they are there causes the problems.

    You seem to improve your understanding.

    In WM's mind, anything that is "fixed" has ends, but an infinite thing
    doesn't have all those ends.

    Unless the infinity is shifted from the end to the centre.

    Regards, WM

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  • From Jim Burns@21:1/5 to All on Tue Oct 8 13:28:50 2024
    On 10/8/2024 6:18 AM, WM wrote:
    On 07.10.2024 20:05, Jim Burns wrote:

    That creates a problem (but for only you).
    Your attempt to fix the problem involves
    a change of the definition of intersection, or
    of natural number, or of something else.

    Not at all.

    A natural number k can be counted.to from 0

    For each split of naturals from 0 to k
    the foresplit ends at some j and
    the hindsplit begins at j+1

    Each set S of natural numbers
    either holds a first number min.S or is empty.

    Each natural number k
    has a predecessor.natural k-1 or is 0

    Each natural number k
    has a successor.natural k+1

    You say I'm wrong about that.
    That means I'm wrong about _what you mean_

    But, if I'm wrong about what you mean,
    then you're wrong about _what I mean_
    and I'm just reporting common knowledge,
    like the day of the week.

    Changing what you think "infinite" means
    from what we mean by "very large finite"
    to what we mean by "infinite"

    No.
    Infinite means infinite.

    What we mean by 'infinite'
    is not
    what you mean by 'infinite.

    You use the same glossary, but
    you use a different dictionary (if any).

    All infinite endsegments cotain
    more than any finite set of numbers.

    ...still true if 'infinite' means "very large".

    There is more to being finite than that.

    A finite set A can be ordered so that
    each subset S
    either holds first min.S and last max.S
    or is empty.

    An end segment E is infinite because
    each natural number has a successor,
    so no element of E is max.E
    so not all nonempty subsets are two.ended
    so E is not finite.

    Each natural number k
    is followed by successor k+1
    k is not.in infinite E(k+1)

    There are no other end segments, none are finite.

    My argument requires only one case,
    best demonstrated with endsegments E(n).
    The intersection of all *infinite* endsegments
    is infinite, because
    they all contain the same natural numbers which
    have not yet been eliminated by
    the process E(n+1) = E(n) \ {n}.

    The intersection of all end.segments is
    the set of natural numbers in each end.segment.
    Each natural number is not.in one or more end.segment.

    That is true but wrong
    in case of infinite endsegments which are infinite
    because they have not lost all natural numbers.

    The intersection of all end.segments is
    the set of natural numbers in each end.segment.

    Consider end segment E(k+1)
    k+1 is in E(k+1)
    Is k+1 in each end segment? Is k+1 in E(k+2)?
    Is E(k+1)
    the set of natural numbers in each end.segment?

    Why else should they be infinite?

    Because each natural number is followed by
    a natural number,
    because 'infinite' DOES NOT mean 'very large'.

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  • From Richard Damon@21:1/5 to All on Tue Oct 8 14:01:18 2024
    On 10/8/24 11:26 AM, WM wrote:
    On 08.10.2024 15:24, joes wrote:
    Am Tue, 08 Oct 2024 12:51:03 +0200 schrieb WM:
    On 07.10.2024 17:18, joes wrote:
    Am Mon, 07 Oct 2024 11:08:33 +0200 schrieb WM:
    On 07.10.2024 10:05, joes wrote:
    Am Mon, 07 Oct 2024 09:41:23 +0200 schrieb WM:
    On 06.10.2024 17:48, Alan Mackenzie wrote:
    even an unbounded sequence does not get longer when shifted by one >>>>>>> step.
    Nor does it get shorter, it stays infinite.
    It keeps all its elements but not more.
    „More” being a different kind of infinity, namely at least uncountable.
    Nonsense.
    Only according to your broken concept of cardinality, by which N u {a}
    is „bigger” than N, and N\{1} u {a} can’t even be compared.

    All ω+k are equally infinite.
    Nonsense.
    I believe it is called the order type.

    Bijection is not about completeness, countability is.

    Of course stopping after a finite number, which potential infinity >>>>>> seems to mean, is not „complete” in that sense. Hilbert’s Hotel is >>>>>> actually infinite, it already holds infinite guests.
    Name them by all the natural numbers. Then no further guest can
    appear.
    It can, if I begin numbering with 2. The cardinality of N\{1} can’t be >>>> finite.
    Cardinality is nonsense.
    Isn’t N\{1} finite? It has ω-1 elements.

    But after the visble natural numbers the dark domain comes, and that is
    what prevents to see the end (which is dark too).

    Where?

    The "visible" numbers, per you definition are ALL the numbers, as all of
    them can be used individually and are selectable.

    Thus, there aren't any left to be dark, except the ones that don't
    actually exist.

    That shows my point. Infinite sets can be moved. 0.999...999 moved gives >>> 9.99...9990.
    You have not indicated what this notation means. Where does the zero come
    from?

    The last natural index has lost its 9 by shifting to the left-hand side. Hence there is nothing remaining.

    How did it "lose" it, I thought you claim was that it was unchangable?

    Remember, infinite means without end, so you can't have and end to it.


    Another point is this: [0, 1) moved gives (0, 1].
    Can you generalise this?

    What example do you have in mind?

    Regards, WM

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  • From joes@21:1/5 to All on Tue Oct 8 19:17:31 2024
    Am Tue, 08 Oct 2024 17:40:50 +0200 schrieb WM:
    On 08.10.2024 15:36, joes wrote:
    Am Tue, 08 Oct 2024 12:40:26 +0200 schrieb WM:
    On 08.10.2024 12:04, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    Hence all must be visible including the point next to zero, but they >>>>> are not.
    There is no point next to zero.
    Points either are or are not. The points that are include one point
    next to zero.
    But not the point inbetween?
    If it exists then this point is next to zero.
    Ah, then the former point wasn’t the one next to zero. Same goes for this one. There are always infinitely many points between any two reals.

    The infinite sets contain what? No natural numbers? Natural numbers
    dancing around, sometimes being in a set, sometimes not? An empty
    intersection requires that the infinite sets have different elements.
    These are infinite sets: {2, 3, 4, …}, {3, 4, 5, …}, {4, 5, 6, …}.
    They contain all naturals larger than a given one, and nothing else.
    Every natural is part of a finite number of these sets (namely, its own
    value is that number). The set {n+1, n+2, …} does not contain n and is
    still infinite; there are (trivially) infinitely many further such
    sets. All of them differ.
    All of them differ by a finite set of numbers (whoich is irrelevant) but contain an infinite set of numbers in common.
    Every *finite* intersection.
    Think about it this way: we are taking the limit of N\{0, 1, 2, …}.

    Shrinking sets which remain infinite have not lost all elements.
    This goes for every single of these sets, but not for their infinite(!)
    intersection.
    If every single set is infinite, then the intersection is infinite too.
    These sets have lost some natural numbers but have kept infinitely many.

    If you imagine this as potential infinity,
    No, in potential infinity there are no endsegments.
    Uh. So the naturals don’t have successors?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to All on Tue Oct 8 19:23:17 2024
    Am Tue, 08 Oct 2024 17:30:19 +0200 schrieb WM:
    On 08.10.2024 15:26, joes wrote:
    Am Tue, 08 Oct 2024 12:46:01 +0200 schrieb WM:

    Because infinitely many natural numbers are contained. This is true
    for all infinite sets of the function. Therefore they cannot have lost
    all numbers.
    What does „they” refer to in the last sentence?
    All endsegments which have infinitely many natural numbers.
    We are, again, not talking about an element of the sequence, which has a natural index, contains infinitely many successors and is missing a
    finite number of predecessors. What we are talking about is the, pardon,
    limit of whatever function.
    Shouldn’t the limit of 1/n be 1/ω != 0 ?

    There is no natural number which has no successors.
    Infinite endsegments contain infinitely many numbers and therefore an infinite intersection.
    Can you explain to me what an infinite intersection is?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to All on Tue Oct 8 19:18:46 2024
    Am Tue, 08 Oct 2024 17:34:39 +0200 schrieb WM:
    On 08.10.2024 15:36, Richard Damon wrote:
    On 10/8/24 6:03 AM, WM wrote:
    On 08.10.2024 09:30, Moebius wrote:
    Am 08.10.2024 um 09:29 schrieb Moebius:

    Yes, but it is completed and therefore fixed. The number of nines in
    0.999... does not change when shifted by one step.
    But it must be infinite, and thus not have an "end"
    But it must be complete and therefore in linear order must have an end.
    In what sense are infinite sets incomplete?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to All on Tue Oct 8 19:27:39 2024
    Am Tue, 08 Oct 2024 17:26:43 +0200 schrieb WM:
    On 08.10.2024 15:24, joes wrote:
    Am Tue, 08 Oct 2024 12:51:03 +0200 schrieb WM:
    On 07.10.2024 17:18, joes wrote:
    Am Mon, 07 Oct 2024 11:08:33 +0200 schrieb WM:
    On 07.10.2024 10:05, joes wrote:
    Am Mon, 07 Oct 2024 09:41:23 +0200 schrieb WM:
    On 06.10.2024 17:48, Alan Mackenzie wrote:
    even an unbounded sequence does not get longer when shifted by one >>>>>>> step.
    Nor does it get shorter, it stays infinite.
    It keeps all its elements but not more.
    „More” being a different kind of infinity, namely at least
    uncountable.
    Nonsense.
    Only according to your broken concept of cardinality, by which N u {a}
    is „bigger” than N, and N\{1} u {a} can’t even be compared.
    Clearly they are the same „size”.

    All ω+k are equally infinite.
    Nonsense.
    This is your useless replacement of cardinality.

    Of course stopping after a finite number, which potential infinity >>>>>> seems to mean, is not „complete” in that sense. Hilbert’s Hotel is >>>>>> actually infinite, it already holds infinite guests.
    Name them by all the natural numbers. Then no further guest can
    appear.
    It can, if I begin numbering with 2. The cardinality of N\{1} can’t
    be finite.
    Cardinality is nonsense.
    Isn’t N\{1} finite? It has ω-1 elements.
    But after the visble natural numbers the dark domain comes, and that is
    what prevents to see the end (which is dark too).
    But ω-1 is a finite natural.

    That shows my point. Infinite sets can be moved. 0.999...999 moved
    gives 9.99...9990.
    You have not indicated what this notation means. Where does the zero
    come from?
    The last natural index has lost its 9 by shifting to the left-hand side. Hence there is nothing remaining.
    Moving a set does not remove elements. You cannot shift through the
    darkness.

    Another point is this: [0, 1) moved gives (0, 1].
    Can you generalise this?
    What example do you have in mind?
    Any interval with both ends open/closed.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From Alan Mackenzie@21:1/5 to Chris M. Thomasson on Tue Oct 8 20:55:31 2024
    Chris M. Thomasson <chris.m.thomasson.1@gmail.com> wrote:

    [ .... ]

    When does an infinite process finally complete? If it does, well, it
    was NOT infinite in any way shape, or form... Right?

    If an infinite process consists of an infinite number of steps, and each
    step takes place instantaneously, it is instantly complete.

    An example of this is the construction of the "diagonal" non-member of a purported complete list of real numbers expressed as decimals. Each
    digit of this non-member is constructed independently of all other such
    digits. So they can all be done "all at once". The operation on a digit
    takes no time. Therefore the infinite process is instantaneous.

    If you had an infinite sequence of steps, where some steps depend on
    previous steps, then picture the first step taking 1/2 second, the second
    one 1/4 second, the third 1/8 second, and so on. The total time taken
    for this infinite process is 1 second. This is like the race between
    Achilles and the tortoise.

    --
    Alan Mackenzie (Nuremberg, Germany).

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  • From Alan Mackenzie@21:1/5 to wolfgang.mueckenheim@tha.de on Tue Oct 8 21:08:14 2024
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 07.10.2024 18:11, Alan Mackenzie wrote:
    What I should have
    written (WM please take note) is:

    The idea of one countably infinite set being "bigger" than another
    countably infinite set is simply nonsense.

    The idea is supported by the fact that set A as a superset of set B is
    bigger than B.

    What do you mean by "bigger" as applied to two infinite sets when one of
    them is not a subset of the other?

    The standard definition for infinite (or finite) sets being the same
    size is the existence of a 1-1 correspondence between them.

    You seem to be rejecting that definition. What would you replace it by?
    You have specified "bigger" for a special case. What is your definition
    for the general case?

    Simply nonsense is the claim that there are as many algebraic numbers
    as prime numbers.

    It is not nonsense. The prime numbers can be put into 1-1
    correspondence with the algebraic numbers, therefore there are exactly
    as many of each. Again, if you mean something else by "as many", then
    perhaps you could state what you mean.

    For Cantor's enumeration of all fractions I have given a simple
    disproof.

    Your "proofs" tend to be nonsense.

    Regards, WM

    --
    Alan Mackenzie (Nuremberg, Germany).

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  • From Richard Damon@21:1/5 to Chris M. Thomasson on Tue Oct 8 17:21:19 2024
    On 10/8/24 3:55 PM, Chris M. Thomasson wrote:
    On 10/8/2024 5:35 AM, Richard Damon wrote:
    On 10/8/24 5:54 AM, WM wrote:
    On 07.10.2024 15:19, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    No, even an unbounded sequence does not get longer when shifted by
    one step.

    The concept of "length" appropriate for finite sets doesn't apply to
    infinite sets.

    It is the concept of number of elements. It is appropriate in actual
    infinity.

    Which has been shown to not exist for us finite beings, as it is too
    big for us to see.


    infinite means "without end" - unendlich.

    Actual infinity means complete. That implies a fixed number.

    Which has been shown to not exist for us finite beings, as it is too
    big for us to see.

    You don't understand that actual infinity is a fixed quantity.

    It may be "fixed" whatever that might mean, but to regard it as a
    "quantity" is more than questionable.

    Fixed means that no element can be added and no element can be lost.
    The number of nines is fixed. That is an assumption only, but
    necessary for bijections.

    Yes, it is fixed, at INFINITY, which means there is no end to it, and
    thus we can't add a zero "at the end" which doesn't exist.

    This is why finite beings can't use "actual infinity" because it is
    too big for us to handle.

    Ummm... Well, not sure what to think about that. Hummm... Any time you
    use a number it is in actual infinity. Think of the number four. It is
    in a pool of the infinitely many natural numbers, and we just used it...

    Fair enough, or weasel words?


    The difference is that in "potential infinity", the number might not
    have been already existing in the concesness, but was "created" by the
    rules of the set when it was needed.

    For the actual infinity to exist, all the numbers need to be already
    created and enumerated, and there are no numbers "left" to be created.

    The problem with "actual infinity" is we can't actually "perceive" it,
    and when we try to think about it, we can only hold it in refernce to
    other finite concepts, and thus it won't actually be infinite.

    The only way we will be able to understand that actual infinity is to
    think about the way that "potential infinity" created it.

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to Chris M. Thomasson on Tue Oct 8 17:29:40 2024
    On 10/8/24 5:25 PM, Chris M. Thomasson wrote:
    On 10/8/2024 2:21 PM, Richard Damon wrote:
    On 10/8/24 4:17 PM, Chris M. Thomasson wrote:
    On 10/8/2024 7:10 AM, Richard Damon wrote:
    On 10/8/24 10:00 AM, Alan Mackenzie wrote:
    Richard Damon <richard@damon-family.org> wrote:
    On 10/8/24 9:11 AM, Alan Mackenzie wrote:
    Richard Damon <richard@damon-family.org> wrote:
    On 10/8/24 5:42 AM, Alan Mackenzie wrote:
    Richard Damon <richard@damon-family.org> wrote:
    On 10/7/24 7:44 AM, Alan Mackenzie wrote:
    Richard Damon <richard@damon-family.org> wrote:
    On 10/7/24 7:13 AM, joes wrote:
    Am Mon, 07 Oct 2024 10:13:21 +0200 schrieb WM:
    On 06.10.2024 17:55, joes wrote:
    Am Sun, 06 Oct 2024 17:26:07 +0200 schrieb WM:
    On 06.10.2024 16:52, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    This idea of time may be what misleads the mathematically >>>>>>>>>>>>>>>>> less adept into believing that 0.999... < 1.
    That is true even in actual infinity.  We can add 9 to >>>>>>>>>>>>>>>> 0.999...999 to obtain 9.999...999. But multiplying >>>>>>>>>>>>>>>> 0.999...999
    by 10 or, what is the same, shifting the digits 9 by one >>>>>>>>>>>>>>>> step
    to the left-hand side, does not increase their number but >>>>>>>>>>>>>>>> leaves it constant: 9.99...9990.  10*0.999...999 = >>>>>>>>>>>>>>>> 9.99...9990
    = 9 + 0.99...9990 < 9 + 0.999...999 ==> 9*0.999...999 < >>>>>>>>>>>>>>>> 9 as
    it should be.
    In actual infinity, there is no last 9 (that would not be >>>>>>>>>>>>>>> infinite).
    Actual means all, but not more. This implies a last before ω. >>>>>>>>>>>>>> The infinity means an end cannot be determined. It is >>>>>>>>>>>>>> produced
    by the dark numbers.
    Actually infinite means infinite, which doesn’t change when >>>>>>>>>>>>> you
    add or subtract a finite number.


    Actual infinity doesn't exist for us finite beings.

    English language tip: The "Actually" in that sentence was not >>>>>>>>>>> attached to the word "infinite", it meant something like >>>>>>>>>>> "This is
    really true:".

    But all his reference to the word "Actually" are part of his >>>>>>>>>> trying to
    define the term "Actual Infinity".

    OK, maybe you're right, there.  The semantics are a bit ambiguous. >>>>>>>>> Joes is not a native English speaker.  Apologies to Joes.

    Anyhow, what do you mean when you say that "actual infinity >>>>>>>>>>> doesn't exist"?  I think we established over the weekend that >>>>>>>>>>> for
    a mathematical entity not to exist, it must cause a
    contradiction.
    Or something like that.

    So what contradiction would the existence of actual infinity >>>>>>>>>>> cause?

    It implies that there exists a first positive real, rational >>>>>>>>>> number or
    unit fraction for one (at least the way WM uses it).

    Whoa!  There're rather a lot of argument steps missing there. >>>>>>>>> Just
    because WM asserts the existence of both actual infinity and a >>>>>>>>> first
    strictly positive unit fraction doesn't mean the one implies >>>>>>>>> the other.


    It does in his logic, which is all that matters to him.

    Were we talking about WM's "logic", just there?  I don't think I >>>>>>> was.

    But my quote came from his logic.

    Ah, OK.

    Yes, it is a wrong conclusion, but that error is based on his
    initial
    assumption that something could be used that isn't available as a >>>>>>>> understandable entity to us finite beings.

    I think infinity is understandable.  I think I understand it.  My >>>>>>> position is that the distinction between "potential infinity" and >>>>>>> "actual
    infinity" is bogus.  It makes no difference in mathematics, which is >>>>>>> probably why the terms have vanished from mathematical discourse.

    The difference is that in his "actual infinity" the generation
    process
    is complete and nothing can change.

    In a sense, the "actual infinity" _is_ the generation process,
    which is
    fixed and complete.

    But only after that infinite process has completed. Finite beings
    can't actually SEE that result.[...]

    When does an infinite process finally complete? If it does, well, it
    was NOT infinite in any way shape, or form... Right?

    The infinite process completes in the infinite, thus beyond what we
    can perceive, but only dimly imagine.

    That is why we can't have actual infinity, we can't get to the
    infinite to see it done.

    since a step-by-step process for the naturals aka:

    1, 1+1, 1+1+1, ...

    Will never end, well... That does not mean there is a largest natural.
    WM is strange on this aspect. See, this right here is pondering on the infinite from a finite being... ;^)

    Well, it can be thought of as ending at infinity, and that gets us to
    the potential infinity.

    The problem is when we think that infinity is just like any of the
    Finite Natural Numbers.

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  • From Moebius@21:1/5 to All on Tue Oct 8 23:46:31 2024
    On 10/8/2024 6:36 AM, Richard Damon wrote:

    This is why it is said that completed/actual infinity doesn't exist,
    because [bla bla bla]

    It's not "said" in math, you fucking asshole full of shit!

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  • From WM@21:1/5 to Jim Burns on Wed Oct 9 10:11:20 2024
    On 08.10.2024 19:28, Jim Burns wrote:
    On 10/8/2024 6:18 AM, WM wrote:

    All infinite endsegments contain
    more than any finite set of numbers.

    ...still true if 'infinite' means "very large".

    No. Very large is not more than any finite set.
    An end segment E is infinite because
    each natural number has a successor,
    so no element of E is max.E
    so not all nonempty subsets are two.ended
    so E is not finite.

    Therefore every infinite endsegment has infinitely many elements with
    each predecessor in common. This is valid for all infinite endsegments.

    Each natural number k
    is followed by successor k+1
    k is not.in infinite E(k+1)

    But infinitely many natnumbers are in e very infinite endsegment.

    There are no other end segments, none are finite.

    They all have an infinite intersection.

    The intersection of all end.segments is
    the set of natural numbers in each end.segment.
    Each natural number is not.in one or more end.segment.

    That is true but wrong
    in case of infinite endsegments which are infinite
    because they have not lost all natural numbers.

    The intersection of all end.segments is
    the set of natural numbers in each end.segment.

    Infinitely many are in every infinite endsegment.

    Consider end segment E(k+1)
    k+1 is in E(k+1)
    Is k+1 in each end segment? Is k+1 in E(k+2)?
    Is E(k+1)
    the set of natural numbers in each end.segment?

    No, but by definition there are infinitely many numbers. They are dark.

    Why else should they be infinite?

    Because each natural number is followed by
    a natural number,

    not only one but infinitely many

    because 'infinite' DOES NOT mean 'very large'.

    Fine. All that blather does not contradict the fact that infinite
    endsegments are infinite.

    Theorem: If every endsegment has infinitely many numbers, then
    infinitely many numbers are in all endsegments.

    Proof: If not, then there would be at least one endsegment with less
    numbers.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Wed Oct 9 11:30:15 2024
    On 08.10.2024 20:01, Richard Damon wrote:
    On 10/8/24 11:16 AM, WM wrote:

    No, darkness doesn't exist, just as actual infinity is unreachable by
    finite beings.

    Your neglect of this fact

    is based on Cantor's work. But you are right in that actual infinity
    and dark elements are indissolubly connected.

    No, you are abusing Cantor's work because you don't understand what
    infinity is

    I understand what Cantor has said.

    , and are trying to apply FINITE logic to the infinite, and
    it just blows up.

    All logic is finite.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Wed Oct 9 11:31:08 2024
    On 08.10.2024 20:01, Richard Damon wrote:
    On 10/8/24 11:49 AM, WM wrote:

    In WM's mind, anything that is "fixed" has ends, but an infinite thing >>>>> doesn't have all those ends.

    Unless the infinity is shifted from the end to the centre.

    But there is no "end" to shift.

    If there is all, then there is an end.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Wed Oct 9 11:28:10 2024
    On 08.10.2024 20:01, Richard Damon wrote:
    On 10/8/24 11:26 AM, WM wrote:

    But after the visble natural numbers the dark domain comes, and that
    is what prevents to see the end (which is dark too).

    Where?

    The "visible" numbers, per you definition are ALL the numbers, as all of
    them can be used individually and are selectable.

    Wrong. Every visible number has infinitely many successors. Therefore
    there are infinitely many successors beyond every visible number.
    Otherwise there was a visible number with less successors.

    Thus, there aren't any left to be dark, except the ones that don't
    actually exist.

    That shows my point. Infinite sets can be moved. 0.999...999 moved
    gives
    9.99...9990.
    You have not indicated what this notation means. Where does the zero
    come
    from?

    The last natural index has lost its 9 by shifting to the left-hand
    side. Hence there is nothing remaining.

    How did it "lose" it,

    By shifting to the left-hand side.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Wed Oct 9 11:32:48 2024
    On 08.10.2024 20:01, Richard Damon wrote:
    On 10/8/24 11:34 AM, WM wrote:
    On 08.10.2024 15:36, Richard Damon wrote:
    On 10/8/24 6:03 AM, WM wrote:
    On 08.10.2024 09:30, Moebius wrote:
    Am 08.10.2024 um 09:29 schrieb Moebius:

    Properly understood, the idea of a completed infinity is no longer >>>>>> a problem in mathematics or philosophy. It is perfectly
    intelligible and coherent.

    Yes, but it is completed and therefore fixed. The number of nines in
    0.999... does not change when shifted by one step.

    But it must be infinite, and thus not have an "end"

    But it must be complete and therefore in linear order must have an end.

    And then it isn't infinte.

    Seems you don't understand the problem with "completed infinity" that
    being infinite, it can't be actually fully understood by the finite.

    Having linear order does not imply having an end, unless you can assume
    a finiteness.

    My dark numbers remedy the problem. But most are too stupid to uderstad.

    Regards, WM

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  • From WM@21:1/5 to Chris M. Thomasson on Wed Oct 9 11:35:05 2024
    On 08.10.2024 21:17, Chris M. Thomasson wrote:
    On 10/8/2024 1:28 AM, WM wrote:

    The rule of geometry is that every point exists.

    Except your dark ones, right?

    Dark points also exist, but they are not visible.

    Asking you to define a dark point would
    mean that its not dark anymore, wrt your line of thinking, right?

    Right.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to joes on Wed Oct 9 11:41:31 2024
    On 08.10.2024 21:17, joes wrote:
    Am Tue, 08 Oct 2024 17:40:50 +0200 schrieb WM:
    On 08.10.2024 15:36, joes wrote:
    Am Tue, 08 Oct 2024 12:40:26 +0200 schrieb WM:
    On 08.10.2024 12:04, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    Hence all must be visible including the point next to zero, but they >>>>>> are not.
    There is no point next to zero.
    Points either are or are not. The points that are include one point
    next to zero.
    But not the point inbetween?
    If it exists then this point is next to zero.
    Ah, then the former point wasn’t the one next to zero. Same goes for this one. There are always infinitely many points between any two reals.

    The infinite sets contain what? No natural numbers? Natural numbers
    dancing around, sometimes being in a set, sometimes not? An empty
    intersection requires that the infinite sets have different elements.
    These are infinite sets: {2, 3, 4, …}, {3, 4, 5, …}, {4, 5, 6, …}. >>> They contain all naturals larger than a given one, and nothing else.
    Every natural is part of a finite number of these sets (namely, its own
    value is that number). The set {n+1, n+2, …} does not contain n and is >>> still infinite; there are (trivially) infinitely many further such
    sets. All of them differ.
    All of them differ by a finite set of numbers (which is irrelevant) but
    contain an infinite set of numbers in common.
    Every *finite* intersection.

    As long as infinitely many numbers are captivated in endsegments, only
    finitely many indices are available, and the intersection is between
    finitely many infinite endsegments.

    Think about it this way: we are taking the limit of N\{0, 1, 2, …}.

    In the limit not a single natural number remains, let alone infinitely many.

    Shrinking sets which remain infinite have not lost all elements.
    This goes for every single of these sets, but not for their infinite(!)
    intersection.
    If every single set is infinite, then the intersection is infinite too.
    These sets have lost some natural numbers but have kept infinitely many.

    If you imagine this as potential infinity,
    No, in potential infinity there are no endsegments.
    Uh. So the naturals don’t have successors?

    They have successors but endsegments are sets and must be complete.

    Regards, WM

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    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to joes on Wed Oct 9 11:47:57 2024
    On 08.10.2024 21:23, joes wrote:
    Am Tue, 08 Oct 2024 17:30:19 +0200 schrieb WM:
    On 08.10.2024 15:26, joes wrote:
    Am Tue, 08 Oct 2024 12:46:01 +0200 schrieb WM:

    Because infinitely many natural numbers are contained. This is true
    for all infinite sets of the function. Therefore they cannot have lost >>>> all numbers.
    What does „they” refer to in the last sentence?
    All endsegments which have infinitely many natural numbers.
    We are, again, not talking about an element of the sequence, which has a natural index, contains infinitely many successors and is missing a
    finite number of predecessors.

    I am talking about such endsegments. Their intersection is infinite.

    What we are talking about is the, pardon,
    limit of whatever function.

    The limit-endsegment is empty.

    Shouldn’t the limit of 1/n be 1/ω != 0 ?

    There is no natural number which has no successors.
    Infinite endsegments contain infinitely many numbers and therefore an
    infinite intersection.
    Can you explain to me what an infinite intersection is?

    The intersection is infinite because all infinite endsegments contain
    the same infinite set. Some have lost more or less numbers but the core
    remains infinite in all infinite endsegments.

    Regards, WM

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  • From Richard Damon@21:1/5 to All on Wed Oct 9 08:02:58 2024
    On 10/9/24 5:30 AM, WM wrote:
    On 08.10.2024 20:01, Richard Damon wrote:
    On 10/8/24 11:16 AM, WM wrote:

    No, darkness doesn't exist, just as actual infinity is unreachable
    by finite beings.

    Your neglect of this fact

    is based on Cantor's work. But you are right in that actual infinity
    and dark elements are indissolubly connected.

    No, you are abusing Cantor's work because you don't understand what
    infinity is

    I understand what Cantor has said.

    , and are trying to apply FINITE logic to the infinite, and
    it just blows up.

    All logic is finite.

    But that is your problem. You need to use the finite-logic that know how
    to handle the infinite, not the finite-logic based on the properties of
    only the finite.

    The finite-logic that knows the properties of the infinite, turns out to
    only be able to handle what you call "potential infinity" as logic that
    is inherently finite can use actually infinite entities, as they are too
    big for it.

    This was discovered a few millenium ago, but you seem to be a bit behind
    in your studies.


    Regards, WM


    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Wed Oct 9 08:03:00 2024
    On 10/9/24 5:31 AM, WM wrote:
    On 08.10.2024 20:01, Richard Damon wrote:
    On 10/8/24 11:49 AM, WM wrote:

    In WM's mind, anything that is "fixed" has ends, but an infinite
    thing
    doesn't have all those ends.

    Unless the infinity is shifted from the end to the centre.

    But there is no "end" to shift.

    If there is all, then there is an end.

    Regards, WM


    Nope. that is just logic of the finite.

    Which, when applied to the infinite just blows itself up.

    Which has been your problem all along.

    --- SoupGate-Win32 v1.05
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  • From joes@21:1/5 to All on Wed Oct 9 12:29:52 2024
    Am Wed, 09 Oct 2024 11:41:31 +0200 schrieb WM:
    On 08.10.2024 21:17, joes wrote:
    Am Tue, 08 Oct 2024 17:40:50 +0200 schrieb WM:
    On 08.10.2024 15:36, joes wrote:
    Am Tue, 08 Oct 2024 12:40:26 +0200 schrieb WM:
    On 08.10.2024 12:04, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    Hence all must be visible including the point next to zero, but
    they are not.
    There is no point next to zero.
    Points either are or are not. The points that are include one point
    next to zero.
    But not the point inbetween?
    If it exists then this point is next to zero.
    Ah, then the former point wasn’t the one next to zero. Same goes for
    this one. There are always infinitely many points between any two
    reals.


    The infinite sets contain what? No natural numbers? Natural numbers
    dancing around, sometimes being in a set, sometimes not? An empty
    intersection requires that the infinite sets have different
    elements.
    These are infinite sets: {2, 3, 4, …}, {3, 4, 5, …}, {4, 5, 6, …}. >>>> They contain all naturals larger than a given one, and nothing else.
    Every natural is part of a finite number of these sets (namely, its
    own value is that number). The set {n+1, n+2, …} does not contain n
    and is still infinite; there are (trivially) infinitely many further
    such sets. All of them differ.
    All of them differ by a finite set of numbers (which is irrelevant)
    but contain an infinite set of numbers in common.
    Every *finite* intersection.
    As long as infinitely many numbers are captivated in endsegments, only finitely many indices are available, and the intersection is between
    finitely many infinite endsegments.
    WDYM, all numbers in the segments are indices.
    But what about the intersection between all infinitely many segments?

    Think about it this way: we are taking the limit of N\{0, 1, 2, …}.
    In the limit not a single natural number remains, let alone infinitely
    many.
    What does this mean for the infinite intersection?

    Shrinking sets which remain infinite have not lost all elements.
    This goes for every single of these sets, but not for their
    infinite(!) intersection.
    If every single set is infinite, then the intersection is infinite
    too. These sets have lost some natural numbers but have kept
    infinitely many.

    If you imagine this as potential infinity,
    No, in potential infinity there are no endsegments.
    Uh. So the naturals don’t have successors?
    They have successors but endsegments are sets and must be complete.
    What is the difference between the sef of successors and an endsegment?
    Why can’t the segments be potentially infinite, or the successors
    actually inf.?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
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  • From joes@21:1/5 to All on Wed Oct 9 12:26:04 2024
    Am Wed, 09 Oct 2024 11:47:57 +0200 schrieb WM:
    On 08.10.2024 21:23, joes wrote:
    Am Tue, 08 Oct 2024 17:30:19 +0200 schrieb WM:
    On 08.10.2024 15:26, joes wrote:
    Am Tue, 08 Oct 2024 12:46:01 +0200 schrieb WM:

    Because infinitely many natural numbers are contained. This is true
    for all infinite sets of the function. Therefore they cannot have
    lost all numbers.
    What does „they” refer to in the last sentence?
    All endsegments which have infinitely many natural numbers.
    We are, again, not talking about an element of the sequence, which has
    a natural index, contains infinitely many successors and is missing a
    finite number of predecessors.
    I am talking about such endsegments. Their intersection is infinite.
    Such an intersection is itself part of the sequence.

    What we are talking about is the, pardon,
    limit of whatever function.
    The limit-endsegment is empty.
    Why?

    Shouldn’t the limit of 1/n be 1/ω != 0 ?

    There is no natural number which has no successors.
    Infinite endsegments contain infinitely many numbers and therefore an
    infinite intersection.
    Can you explain to me what an infinite intersection is?
    The intersection is infinite because all infinite endsegments contain
    the same infinite set. Some have lost more or less numbers but the core remains infinite in all infinite endsegments.
    And how many segments have been intersected?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
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  • From joes@21:1/5 to All on Wed Oct 9 12:38:14 2024
    Am Wed, 09 Oct 2024 10:11:20 +0200 schrieb WM:
    On 08.10.2024 19:28, Jim Burns wrote:
    On 10/8/2024 6:18 AM, WM wrote:

    All infinite endsegments contain more than any finite set of numbers.
    ...still true if 'infinite' means "very large".
    No. Very large is not more than any finite set.

    An end segment E is infinite because each natural number has a
    successor,
    so no element of E is max.E so not all nonempty subsets are two.ended
    so E is not finite.
    Therefore every infinite endsegment has infinitely many elements with
    each predecessor in common. This is valid for all infinite endsegments.
    With each, but not with all at once (cf. quantifier shift).

    There are no other end segments, none are finite.
    They all have an infinite intersection.
    Intersection with what?

    Consider end segment E(k+1)
    k+1 is in E(k+1)
    Is k+1 in each end segment? Is k+1 in E(k+2)?
    Is E(k+1) the set of natural numbers in each end.segment?
    No, but by definition there are infinitely many numbers. They are dark.

    Why else should they be infinite?
    Because each natural number is followed by a natural number,
    not only one but infinitely many

    because 'infinite' DOES NOT mean 'very large'.
    Theorem: If every endsegment has infinitely many numbers, then
    infinitely many numbers are in all endsegments.
    Invalid quantifier shift.

    Proof: If not, then there would be at least one endsegment with less
    numbers.
    No. Why do you think that?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From WM@21:1/5 to Alan Mackenzie on Wed Oct 9 14:48:17 2024
    On 08.10.2024 23:08, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 07.10.2024 18:11, Alan Mackenzie wrote:
    What I should have
    written (WM please take note) is:

    The idea of one countably infinite set being "bigger" than another
    countably infinite set is simply nonsense.

    The idea is supported by the fact that set A as a superset of set B is
    bigger than B.

    What do you mean by "bigger" as applied to two infinite sets when one of
    them is not a subset of the other?

    That is not in every case defined. But here are some rules:
    Not all infinite sets can be compared by size, but we can establish some
    useful rules.

     The rule of subset proves that every proper subset has fewer elements
    than its superset. So there are more natural numbers than prime numbers,
    |N| > |P|, and more complex numbers than real numbers, |C| > |R|. Even finitely many exceptions from the subset-relation are admitted for
    infinite subsets. Therefore there are more odd numbers than prime
    numbers |O| > |P|.

     The rule of construction yields the numbers of integers |Z| = 2|N| + 1
    and the number of fractions |Q| = 2|N|^2 + 1 (there are fewer rational
    numbers Q# ). Since all products of rational numbers with an irrational
    number are irrational, there are many more irrational numbers than
    rational numbers |X| > |Q#|.

     The rule of symmetry yields precisely the same number of real
    geometric points in every interval (n, n+1] and with at most a small
    error same number of odd numbers and of even numbers in every finite
    interval and in the whole real line.

    The standard definition for infinite (or finite) sets being the same
    size is the existence of a 1-1 correspondence between them.

    You seem to be rejecting that definition. What would you replace it by?
    You have specified "bigger" for a special case. What is your definition
    for the general case?

    Simply nonsense is the claim that there are as many algebraic numbers
    as prime numbers.

    It is not nonsense. The prime numbers can be put into 1-1
    correspondence with the algebraic numbers, therefore there are exactly
    as many of each.

    Nonsense. Only potential infinity is used. Never the main body is applied.

    For Cantor's enumeration of all fractions I have given a simple
    disproof.

    Your "proofs" tend to be nonsense.

    It appears to you because you are unable to understand. Here is the
    simplest:

    Theorem: If every endsegment has infinitely many numbers, then
    infinitely many numbers are in all endsegments.

    Proof: If not, then there would be at least one endsegment with less
    numbers.

    Note: The shrinking endsegments cannot acquire new numbers.

    Regards, WM

    Regards, WM


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  • From WM@21:1/5 to joes on Wed Oct 9 15:24:21 2024
    On 09.10.2024 14:38, joes wrote:
    Am Wed, 09 Oct 2024 10:11:20 +0200 schrieb WM:

    An end segment E is infinite because each natural number has a
    successor,
    so no element of E is max.E so not all nonempty subsets are two.ended
    so E is not finite.
    Therefore every infinite endsegment has infinitely many elements with
    each predecessor in common. This is valid for all infinite endsegments.
    With each, but not with all at once (cf. quantifier shift).

    With all infinite endsegments at once! Inclusion monotony. If you can't understand try to find a counterexample.

    There are no other end segments, none are finite.
    They all have an infinite intersection.
    Intersection with what?

    Consider end segment E(k+1)
    k+1 is in E(k+1)
    Is k+1 in each end segment? Is k+1 in E(k+2)?
    Is E(k+1) the set of natural numbers in each end.segment?
    No, but by definition there are infinitely many numbers. They are dark.

    Why else should they be infinite?
    Because each natural number is followed by a natural number,
    not only one but infinitely many

    because 'infinite' DOES NOT mean 'very large'.
    Theorem: If every endsegment has infinitely many numbers, then
    infinitely many numbers are in all endsegments.
    Invalid quantifier shift.

    Valid quantifier shift.

    Proof: If not, then there would be at least one endsegment with less
    numbers.
    No. Why do you think that?

    The shrinking endsegments have all their elements in common with all
    their predecessors. As long as all are infinite, then all have an
    infinite set in common.

    Regards, WM




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  • From WM@21:1/5 to FromTheRafters on Wed Oct 9 15:49:27 2024
    On 09.10.2024 12:12, FromTheRafters wrote:
    WM presented the following explanation :

    Theorem: If every endsegment has infinitely many numbers, then
    infinitely many numbers are in all endsegments.

    Proof: If not, then there would be at least one endsegment with less
    numbers.

    A conjecture is not a proof. This one is simply another non sequitur.

    Inclusion-monotony proves that all infinite endsegments have a common
    infinite subset because only a loss of elements is possible. As long as
    all endsegments are infinite, the loss has spared an infinite set common
    to all.

    If you can't understand try to find a counterexample.

    Or use a finite example.
    Diminish the set {1, 2, 3, 4, 5, 6, 7, 8, 9, 10} to get
    {2, 3, 4, 5, 6, 7, 8, 9, 10}
    {3, 4, 5, 6, 7, 8, 9, 10}
    {4, 5, 6, 7, 8, 9, 10}
    {5, 6, 7, 8, 9, 10}
    ...

    As long as five numbers remain in all sets, they are a common subset of
    all sets.

    When you add all numbers following 10 to all sets, the situation remains
    the same.

    Regards, WM

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  • From WM@21:1/5 to joes on Wed Oct 9 15:35:10 2024
    On 09.10.2024 14:26, joes wrote:
    Am Wed, 09 Oct 2024 11:47:57 +0200 schrieb WM:
    On 08.10.2024 21:23, joes wrote:
    Am Tue, 08 Oct 2024 17:30:19 +0200 schrieb WM:
    On 08.10.2024 15:26, joes wrote:
    Am Tue, 08 Oct 2024 12:46:01 +0200 schrieb WM:

    Because infinitely many natural numbers are contained. This is true >>>>>> for all infinite sets of the function. Therefore they cannot have
    lost all numbers.
    What does „they” refer to in the last sentence?
    All endsegments which have infinitely many natural numbers.
    We are, again, not talking about an element of the sequence, which has
    a natural index, contains infinitely many successors and is missing a
    finite number of predecessors.
    I am talking about such endsegments. Their intersection is infinite.
    Such an intersection is itself part of the sequence.

    Of course.

    What we are talking about is the, pardon,
    limit of whatever function.
    The limit-endsegment is empty.
    Why?

    Because every n has become an index and then is lost.

    The intersection is infinite because all infinite endsegments contain
    the same infinite set. Some have lost more or less numbers but the core
    remains infinite in all infinite endsegments.
    And how many segments have been intersected?

    (Potentially in-)finitely many because the collection of indices is
    finite as long as an infinite set of numbers remains within the endsegments.

    Regards, WM




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  • From WM@21:1/5 to joes on Wed Oct 9 15:29:17 2024
    On 09.10.2024 14:29, joes wrote:
    Am Wed, 09 Oct 2024 11:41:31 +0200 schrieb WM:
    On 08.10.2024 21:17, joes wrote:
    Am Tue, 08 Oct 2024 17:40:50 +0200 schrieb WM:
    On 08.10.2024 15:36, joes wrote:
    Am Tue, 08 Oct 2024 12:40:26 +0200 schrieb WM:
    On 08.10.2024 12:04, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    Hence all must be visible including the point next to zero, but >>>>>>>> they are not.
    There is no point next to zero.
    Points either are or are not. The points that are include one point >>>>>> next to zero.
    But not the point inbetween?
    If it exists then this point is next to zero.
    Ah, then the former point wasn’t the one next to zero. Same goes for
    this one. There are always infinitely many points between any two
    reals.


    The infinite sets contain what? No natural numbers? Natural numbers >>>>>> dancing around, sometimes being in a set, sometimes not? An empty
    intersection requires that the infinite sets have different
    elements.
    These are infinite sets: {2, 3, 4, …}, {3, 4, 5, …}, {4, 5, 6, …}. >>>>> They contain all naturals larger than a given one, and nothing else. >>>>> Every natural is part of a finite number of these sets (namely, its
    own value is that number). The set {n+1, n+2, …} does not contain n >>>>> and is still infinite; there are (trivially) infinitely many further >>>>> such sets. All of them differ.
    All of them differ by a finite set of numbers (which is irrelevant)
    but contain an infinite set of numbers in common.
    Every *finite* intersection.
    As long as infinitely many numbers are captivated in endsegments, only
    finitely many indices are available, and the intersection is between
    finitely many infinite endsegments.
    WDYM, all numbers in the segments are indices.

    All numbers n get indices of endsegments E(n).

    But what about the intersection between all infinitely many segments?

    It is empty.

    Think about it this way: we are taking the limit of N\{0, 1, 2, …}.
    In the limit not a single natural number remains, let alone infinitely
    many.
    What does this mean for the infinite intersection?

    It is empty because all numbers are becoming indices and then get lost,
    one by one.

    If you imagine this as potential infinity,
    No, in potential infinity there are no endsegments.
    Uh. So the naturals don’t have successors?
    They have successors but endsegments are sets and must be complete.
    What is the difference between the sef of successors and an endsegment?
    Why can’t the segments be potentially infinite, or the successors
    actually inf.?

    An endsegment is a set. All elements must exist. That requires actual
    infinity. In potential infinity numbers come into being - and never all.

    Regards, WM


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  • From Alan Mackenzie@21:1/5 to wolfgang.mueckenheim@tha.de on Wed Oct 9 14:13:29 2024
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 08.10.2024 23:08, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 07.10.2024 18:11, Alan Mackenzie wrote:
    What I should have
    written (WM please take note) is:

    The idea of one countably infinite set being "bigger" than another
    countably infinite set is simply nonsense.

    The idea is supported by the fact that set A as a superset of set B is
    bigger than B.

    What do you mean by "bigger" as applied to two infinite sets when one of
    them is not a subset of the other?

    That is not in every case defined. But here are some rules:
    Not all infinite sets can be compared by size, but we can establish some useful rules.

    Possibly. But these rules would require proof, which you haven't
    supplied.

     The rule of subset proves that every proper subset has fewer elements than its superset. So there are more natural numbers than prime numbers,
    |N| > |P|, and more complex numbers than real numbers, |C| > |R|. Even finitely many exceptions from the subset-relation are admitted for
    infinite subsets. Therefore there are more odd numbers than prime
    numbers |O| > |P|.

    This breaks down in a contradiction, as shown by Richard D in another
    post: To repeat his idea:

    The set {0, 2, 4, 6, ...} is a subset of the natural numbers N,
    {0, 1, 2, 3, 4, 5, 6, ...}, thus is smaller than it.
    We can replace the second set by one of the same "size" by multiplying
    each of its members by 4. We then get the set
    {0, 4, 8, ...}.
    Now this third set is a subset of the first hence is smaller than it.
    So we have two sets of the same size, one of which is bigger than, the
    other of which is smaller than another set. Contradiction.

    So your "rule of subset" is not coherent.

     The rule of construction yields the numbers of integers |Z| = 2|N| + 1 and the number of fractions |Q| = 2|N|^2 + 1 (there are fewer rational numbers Q# ). Since all products of rational numbers with an irrational number are irrational, there are many more irrational numbers than
    rational numbers |X| > |Q#|.

    There are many more irrational numbers than rational ones, but your
    argument is not coherent.

     The rule of symmetry yields precisely the same number of real
    geometric points in every interval (n, n+1] and with at most a small
    error same number of odd numbers and of even numbers in every finite interval and in the whole real line.

    I can't make out what you're trying to say, here.

    The standard definition for infinite (or finite) sets being the same
    size is the existence of a 1-1 correspondence between them.

    You seem to be rejecting that definition. What would you replace it by?
    You have specified "bigger" for a special case. What is your definition
    for the general case?

    Simply nonsense is the claim that there are as many algebraic numbers
    as prime numbers.

    It is not nonsense. The prime numbers can be put into 1-1
    correspondence with the algebraic numbers, therefore there are exactly
    as many of each.

    Nonsense. Only potential infinity is used. Never the main body is applied.

    It's not nonsense. Your last sentence doesn't make any sense. Neither
    does the middle one, without further context saying what "only"
    potential infinity is used for.

    For Cantor's enumeration of all fractions I have given a simple
    disproof.

    Your "proofs" tend to be nonsense.

    It appears to you because you are unable to understand. Here is the simplest:

    No, it is clear to me BECAUSE I understand. Being a graduate
    mathematician, I can distinguish between maths and gobbledegook that
    might look like maths. Your "proofs" fall into the second category.

    Theorem: If every endsegment has infinitely many numbers, then
    infinitely many numbers are in all endsegments.

    That is simply false. You cannot specify a single number which is in
    all endsegments. What you do is revert to your fairy-story "dark
    numbers" (which I've proven can't exist), and say all these alleged
    infinitely many numbers are "dark".

    Proof: If not, then there would be at least one endsegment with less numbers.

    ... which is gobbledegook, not maths.

    Note: The shrinking endsegments cannot acquire new numbers.

    An end segment is what it is. It doesn't change.

    Regards, WM

    --
    Alan Mackenzie (Nuremberg, Germany).

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  • From WM@21:1/5 to Alan Mackenzie on Wed Oct 9 16:40:21 2024
    On 09.10.2024 16:13, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 08.10.2024 23:08, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 07.10.2024 18:11, Alan Mackenzie wrote:
    What I should have
    written (WM please take note) is:

    The idea of one countably infinite set being "bigger" than another
    countably infinite set is simply nonsense.

    The idea is supported by the fact that set A as a superset of set B is >>>> bigger than B.

    What do you mean by "bigger" as applied to two infinite sets when one of >>> them is not a subset of the other?

    That is not in every case defined. But here are some rules:
    Not all infinite sets can be compared by size, but we can establish some
    useful rules.

    Possibly. But these rules would require proof, which you haven't
    supplied.

    These rules are self-evident.

     The rule of subset proves that every proper subset has fewer elements
    than its superset. So there are more natural numbers than prime numbers,
    |N| > |P|, and more complex numbers than real numbers, |C| > |R|. Even
    finitely many exceptions from the subset-relation are admitted for
    infinite subsets. Therefore there are more odd numbers than prime
    numbers |O| > |P|.

    This breaks down in a contradiction, as shown by Richard D in another
    post: To repeat his idea:

    The set {0, 2, 4, 6, ...} is a subset of the natural numbers N,
    {0, 1, 2, 3, 4, 5, 6, ...}, thus is smaller than it.
    We can replace the second set by one of the same "size" by multiplying
    each of its members by 4. We then get the set
    {0, 4, 8, ...}.
    Now this third set is a subset of the first hence is smaller than it.

    No. When we *in actual infinity* multiply all |ℕ|natural numbers by 2,
    then we keep |ℕ| numbers but only half of them are smaller than ω, i.e.,
    are natural numbers. The other half is larger than ω.

    Theorem: If every endsegment has infinitely many numbers, then
    infinitely many numbers are in all endsegments.

    That is simply false. You cannot specify a single number which is in
    all endsegments.

    True. This proves dark numbers.

    Proof: If not, then there would be at least one endsegment with less
    numbers.

    ... which is gobbledegook, not maths.

    Note: The shrinking endsegments cannot acquire new numbers.

    An end segment is what it is. It doesn't change.

    But the terms of the sequence do. Here is a simple finite example:

    {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
    {2, 3, 4, 5, 6, 7, 8, 9, 10}
    {3, 4, 5, 6, 7, 8, 9, 10}
    {4, 5, 6, 7, 8, 9, 10}
    {5, 6, 7, 8, 9, 10}
    {6, 7, 8, 9, 10}
    {7, 8, 9, 10}
    {8, 9, 10}
    {9, 10}
    {10}
    { } .

    Theorem: Every set that contains at least 3 numbers (call it TN-set)
    holds these numbers in common with all TN-sets. Quantifier shift: There
    is a subset of three elements common to all TN-sets. Understood? Now
    complete all sets by the natural numbers > 10 and complete the sequence.

    Then we get: All sets which have lost at most n elements have the
    remainder in common. Note: All sets which are infinite have lost at most
    a finite number of elements.

    Regards, WM

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  • From WM@21:1/5 to FromTheRafters on Wed Oct 9 16:50:55 2024
    On 09.10.2024 16:40, FromTheRafters wrote:
    WM pretended :
    On 09.10.2024 12:12, FromTheRafters wrote:
    WM presented the following explanation :

    Theorem: If every endsegment has infinitely many numbers, then
    infinitely many numbers are in all endsegments.

    Proof: If not, then there would be at least one endsegment with less
    numbers.

    A conjecture is not a proof. This one is simply another non sequitur.

    Inclusion-monotony proves that all infinite endsegments have a common
    infinite subset because only a loss of elements is possible. As long
    as all endsegments are infinite, the loss has spared an infinite set
    common to all.

    If you can't understand try to find a counterexample.

    Have you succeeded yet?

    Or use a finite example.
    Diminish the set {1, 2, 3, 4, 5, 6, 7, 8, 9, 10} to get
    {2, 3, 4, 5, 6, 7, 8, 9, 10}
    {3, 4, 5, 6, 7, 8, 9, 10}
    {4, 5, 6, 7, 8, 9, 10}
    {5, 6, 7, 8, 9, 10}
    ...

    Finite sets again, I don't care how many.

    As long as five numbers remain in all sets, they are a common subset
    of all sets.

    When you add all numbers following 10 to all sets, the situation
    remains the same.

    Try using infinite sets.

    The completed sets are infinite.

    If there were a last as well as a first you
    would be right, but there is no last to be in all endsegments,

    The same numbers beyond any n are in all infinite endsegments. There are infinitely many because there is no last number.

    so it is empty.

    Infinitely many numbers in all infinite endsegments do not make an empty intersection. An infinite set can follow only on a finite number n.

    Regards, WM

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  • From Alan Mackenzie@21:1/5 to wolfgang.mueckenheim@tha.de on Wed Oct 9 15:11:31 2024
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 09.10.2024 16:13, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 08.10.2024 23:08, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 07.10.2024 18:11, Alan Mackenzie wrote:
    What I should have
    written (WM please take note) is:

    The idea of one countably infinite set being "bigger" than another >>>>>> countably infinite set is simply nonsense.

    The idea is supported by the fact that set A as a superset of set B is >>>>> bigger than B.

    What do you mean by "bigger" as applied to two infinite sets when one of >>>> them is not a subset of the other?

    That is not in every case defined. But here are some rules:
    Not all infinite sets can be compared by size, but we can establish some >>> useful rules.

    Possibly. But these rules would require proof, which you haven't
    supplied.

    These rules are self-evident.

    They're anything but self-evident for infinite sets. Presumably the
    muddle you're in is much the same as what mathematicians were in a couple
    of hundred years ago. Things have advanced since then.

     The rule of subset proves that every proper subset has fewer elements >>> than its superset. So there are more natural numbers than prime numbers, >>> |N| > |P|, and more complex numbers than real numbers, |C| > |R|. Even
    finitely many exceptions from the subset-relation are admitted for
    infinite subsets. Therefore there are more odd numbers than prime
    numbers |O| > |P|.

    This breaks down in a contradiction, as shown by Richard D in another
    post: To repeat his idea:

    The set {0, 2, 4, 6, ...} is a subset of the natural numbers N,
    {0, 1, 2, 3, 4, 5, 6, ...}, thus is smaller than it.
    We can replace the second set by one of the same "size" by multiplying
    each of its members by 4. We then get the set
    {0, 4, 8, ...}.
    Now this third set is a subset of the first hence is smaller than it.

    No. When we *in actual infinity* multiply all |ℕ|natural numbers by 2, then we keep |ℕ| numbers but only half of them are smaller than ω, i.e., are natural numbers. The other half is larger than ω.

    Ha ha ha ha! This is garbage. If you think doubling some numbers gives results which are "larger than ω" you'd better be prepared to give an
    example of such a number. But you're surely going to tell me that these
    are "dark numbers" (which I've proved don't exist).

    Theorem: If every endsegment has infinitely many numbers, then
    infinitely many numbers are in all endsegments.

    That is simply false. You cannot specify a single number which is in
    all endsegments.

    True. This proves dark numbers.

    Dark numbers don't exist, or at least they're not natural numbers. There
    is no number in each and every end segment of N.

    [ .... ]

    Note: The shrinking endsegments cannot acquire new numbers.

    An end segment is what it is. It doesn't change.

    But the terms of the sequence do. Here is a simple finite example:

    {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
    {2, 3, 4, 5, 6, 7, 8, 9, 10}
    {3, 4, 5, 6, 7, 8, 9, 10}
    {4, 5, 6, 7, 8, 9, 10}
    {5, 6, 7, 8, 9, 10}
    {6, 7, 8, 9, 10}
    {7, 8, 9, 10}
    {8, 9, 10}
    {9, 10}
    {10}
    { } .

    Example of what? The reasoning you might do on finite sets mostly isn't applicable to infinite sets.

    Theorem: Every set that contains at least 3 numbers (call it TN-set)
    holds these numbers in common with all TN-sets.

    Not even an ignorant schoolboy would maintain this. The two TN-sets {0,
    1, 2} and {3, 4, 5} have no numbers in common.

    Quantifier shift: There is a subset of three elements common to all
    TN-sets. Understood?

    Yes, I understand completely. What you've written is garbage.

    Now complete all sets by the natural numbers > 10 and complete the
    sequence.

    You can't "complete" a set. A set is what it is, defined by its well
    defined members and is not subject to change.

    Then we get: All sets which have lost at most n elements have the
    remainder in common. Note: All sets which are infinite have lost at most
    a finite number of elements.

    More gobbledegook which isn't maths.

    Regards, WM

    --
    Alan Mackenzie (Nuremberg, Germany).

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  • From WM@21:1/5 to Alan Mackenzie on Wed Oct 9 17:39:36 2024
    On 09.10.2024 17:11, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:
    No. When we *in actual infinity* multiply all |ℕ|natural numbers by 2,
    then we keep |ℕ| numbers but only half of them are smaller than ω, i.e., >> are natural numbers. The other half is larger than ω.

    Ha ha ha ha! This is garbage. If you think doubling some numbers gives results which are "larger than ω" you'd better be prepared to give an example of such a number. But you're surely going to tell me that these
    are "dark numbers

    {1, 2, 3, ..., ω}*2 = {2, 4, 6, ..., ω*2} .

    Should all places ω+2, ω+4, ω+6, ... remain empty?
    Should the even numbers in spite of doubling remain below ω?
    Then they must occupy places not existing before. That means the
    original set had not contained all natural numbers. That mans no actual
    or complete infinity.

    Theorem: If every endsegment has infinitely many numbers, then
    infinitely many numbers are in all endsegments.

    That is simply false. You cannot specify a single number which is in
    all endsegments.

    True. This proves dark numbers.

    Dark numbers don't exist, or at least they're not natural numbers. There
    is no number in each and every end segment of N.

    True. But those endsegments which have lost only finitely many numbers
    and yet contain infinitely many, have an infinite intersection.

    [ .... ]

    Note: The shrinking endsegments cannot acquire new numbers.

    An end segment is what it is. It doesn't change.

    But the terms of the sequence do. Here is a simple finite example:

    {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
    {2, 3, 4, 5, 6, 7, 8, 9, 10}
    {3, 4, 5, 6, 7, 8, 9, 10}
    {4, 5, 6, 7, 8, 9, 10}
    {5, 6, 7, 8, 9, 10}
    {6, 7, 8, 9, 10}
    {7, 8, 9, 10}
    {8, 9, 10}
    {9, 10}
    {10}
    { } .

    Example of what? The reasoning you might do on finite sets mostly isn't applicable to infinite sets.

    Why not? The essence is that only finitely many numbers have been lost
    and the rest is remaining.

    Theorem: Every set that contains at least 3 numbers (call it TN-set)
    holds these numbers in common with all TN-sets.

    Not even an ignorant schoolboy would maintain this. The two TN-sets {0,
    1, 2} and {3, 4, 5} have no numbers in common.

    These sets do not belong to the above example. They are not TN-sets.

    Quantifier shift: There is a subset of three elements common to all
    TN-sets. Understood?

    Yes, I understand completely.

    No.

    Now complete all sets by the natural numbers > 10 and complete the
    sequence.

    You can't "complete" a set.

    You can add elements.

    Regards, WM

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  • From Alan Mackenzie@21:1/5 to wolfgang.mueckenheim@tha.de on Wed Oct 9 16:12:51 2024
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 09.10.2024 17:11, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:
    No. When we *in actual infinity* multiply all |ℕ|natural numbers by 2, >>> then we keep |ℕ| numbers but only half of them are smaller than ω, i.e., >>> are natural numbers. The other half is larger than ω.

    Ha ha ha ha! This is garbage. If you think doubling some numbers gives
    results which are "larger than ω" you'd better be prepared to give an
    example of such a number. But you're surely going to tell me that these
    are "dark numbers

    {1, 2, 3, ..., ω}*2 = {2, 4, 6, ..., ω*2} .

    You've misunderstood the nature of N. The set is not
    {1, 2, 3, ..., ω}, it is {1, 2, 3, ...}. There is no last element ω in
    it.

    Should all places ω+2, ω+4, ω+6, ... remain empty?

    It's not clear what you mean by this. There are no such "places".

    Should the even numbers in spite of doubling remain below ω?

    Yes, of course.

    Then they must occupy places not existing before.

    No. Remember the set is infinite, so you cannot use finite intuition to
    reason about it.

    That means the original set had not contained all natural numbers. That
    mans no actual or complete infinity.

    Nonsense.

    Theorem: If every endsegment has infinitely many numbers, then
    infinitely many numbers are in all endsegments.

    That is simply false. You cannot specify a single number which is in
    all endsegments.

    True. This proves dark numbers.

    Dark numbers don't exist, or at least they're not natural numbers. There
    is no number in each and every end segment of N.

    True. But those endsegments which have lost only finitely many numbers
    and yet contain infinitely many, have an infinite intersection.

    End segments don't "lose" anything. They are what they are, namely well defined sets. Note that your "True" in your last paragraph, agrees that
    the intersection of all end segments is empty, which you immediately
    contradict by asserting it is not empty.

    [ .... ]

    Note: The shrinking endsegments cannot acquire new numbers.

    An end segment is what it is. It doesn't change.

    But the terms of the sequence do. Here is a simple finite example:

    {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
    {2, 3, 4, 5, 6, 7, 8, 9, 10}
    {3, 4, 5, 6, 7, 8, 9, 10}
    {4, 5, 6, 7, 8, 9, 10}
    {5, 6, 7, 8, 9, 10}
    {6, 7, 8, 9, 10}
    {7, 8, 9, 10}
    {8, 9, 10}
    {9, 10}
    {10}
    { } .

    Example of what? The reasoning you might do on finite sets mostly isn't
    applicable to infinite sets.

    Why not? The essence is that only finitely many numbers have been lost
    and the rest is remaining.

    Your massive misunderstanding of infinite sets is surely a good reason.
    Using your vernacular "lost", it is clear that in the infinite
    intersection of the end segments of N, an infinite number of numbers has
    been "lost". There are none left over.

    Theorem: Every set that contains at least 3 numbers (call it TN-set)
    holds these numbers in common with all TN-sets.

    Not even an ignorant schoolboy would maintain this. The two TN-sets {0,
    1, 2} and {3, 4, 5} have no numbers in common.

    These sets do not belong to the above example. They are not TN-sets.

    You should be more careful with your definitions.

    Quantifier shift: There is a subset of three elements common to all
    TN-sets. Understood?

    Yes, I understand completely.

    No.

    Now complete all sets by the natural numbers > 10 and complete the
    sequence.

    You can't "complete" a set.

    You can add elements.

    Then you get different sets, which weren't the ones you were trying to
    reason about.

    Regards, WM

    --
    Alan Mackenzie (Nuremberg, Germany).

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  • From WM@21:1/5 to All on Wed Oct 9 18:41:29 2024
    Am 09.10.2024 um 18:04 schrieb FromTheRafters:
    It happens that WM formulated :

    The essence is that only finitely many numbers have been lost
    and the rest is remaining.


    Now complete all sets by the natural numbers > 10 and complete the
    sequence.

    You can't "complete" a set.

    You can add elements.

    No, you cannot!

    I can. We call it union. Subtraction is also possible. You should try to understand these simple techniques. And you should understand that your
    blather does not distract from the topic: The essence is that only
    finitely many numbers have been lost and the rest is remaining. This
    makes an infinite intersection.

    Regards, WM


    You can, however, create a new set with more elements.

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  • From WM@21:1/5 to All on Wed Oct 9 18:47:39 2024
    Am 09.10.2024 um 18:12 schrieb Alan Mackenzie:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    You've misunderstood the nature of N. The set is not
    {1, 2, 3, ..., ω}, it is {1, 2, 3, ...}.

    I use ℕ U {ω} for clarity.
    Should all places ω+2, ω+4, ω+6, ... remain empty?

    It's not clear what you mean by this. There are no such "places".

    According to Cantor they are there in actual infinity.

    Should the even numbers in spite of doubling remain below ω?

    Yes, of course.

    Then they must occupy places not existing before.

    No. Remember the set is infinite, so you cannot use finite intuition to reason about it.

    Numbers multiplied by 2 do not remain unchanged. That is not intuition
    but mathematics.

    That means the original set had not contained all natural numbers. That
    mans no actual or complete infinity.

    Nonsense.

    Sorry, you are a real believer but cannot discuss rational arguments.

    Regards, WM

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  • From WM@21:1/5 to All on Wed Oct 9 18:56:29 2024
    Am 09.10.2024 um 18:12 schrieb Alan Mackenzie:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    Dark numbers don't exist, or at least they're not natural numbers. There >>> is no number in each and every end segment of N.

    True. But those endsegments which have lost only finitely many numbers
    and yet contain infinitely many, have an infinite intersection.

    End segments don't "lose" anything. They are what they are, namely well defined sets. Note that your "True" in your last paragraph, agrees that
    the intersection of all end segments is empty, which you immediately contradict by asserting it is not empty.

    You do not understand the least! The intersection of all endsegments is
    empty. The intersection of infinite endsegments is infinite.

    [ .... ]

    Note: The shrinking endsegments cannot acquire new numbers.

    An end segment is what it is. It doesn't change.

    But the terms of the sequence do. Here is a simple finite example:

    {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
    {2, 3, 4, 5, 6, 7, 8, 9, 10}
    {3, 4, 5, 6, 7, 8, 9, 10}
    {4, 5, 6, 7, 8, 9, 10}
    {5, 6, 7, 8, 9, 10}
    {6, 7, 8, 9, 10}
    {7, 8, 9, 10}
    {8, 9, 10}
    {9, 10}
    {10}
    { } .

    Theorem: Every set that contains at least 3 numbers (call it TN-set)
    holds these numbers in common with all TN-sets.

    Obviously the above sets were meant.

    Now complete all sets by the natural numbers > 10 and complete the
    sequence.

    You can't "complete" a set.

    You can add elements.

    Then you get different sets, which weren't the ones you were trying to
    reason about.

    The completion of the above sets does not change the principle:
    Non-empty inclusion-monotonic sets like infinite endsegments have a
    non-empty intersection. All endsegments have an empty intersection.

    Regards, WM

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  • From joes@21:1/5 to All on Wed Oct 9 17:08:02 2024
    Am Wed, 09 Oct 2024 14:48:17 +0200 schrieb WM:
    On 08.10.2024 23:08, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 07.10.2024 18:11, Alan Mackenzie wrote:
    What I should have written (WM please take note) is:

    The idea of one countably infinite set being "bigger" than another
    countably infinite set is simply nonsense.
    The idea is supported by the fact that set A as a superset of set B is
    bigger than B.
    What do you mean by "bigger" as applied to two infinite sets when one
    of them is not a subset of the other?
    That is not in every case defined. But here are some rules:
    Not all infinite sets can be compared by size, but we can establish some useful rules.
    [copypasta]
    That is a weakness of your notion of cardinality.
    How do you compare finite sets?

    Simply nonsense is the claim that there are as many algebraic numbers
    as prime numbers.
    It is not nonsense. The prime numbers can be put into 1-1
    correspondence with the algebraic numbers, therefore there are exactly
    as many of each.
    Nonsense. Only potential infinity is used. Never the main body is
    applied.
    What "main body"?

    For Cantor's enumeration of all fractions I have given a simple
    disproof.
    Your "proofs" tend to be nonsense.
    Theorem: If every endsegment has infinitely many numbers, then
    infinitely many numbers are in all endsegments.
    Proof: If not, then there would be at least one endsegment with less
    numbers.
    I struggle to follow this illogic. Why should one segment have less
    numbers?

    Note: The shrinking endsegments cannot acquire new numbers.
    Not necessary, they already contain as many as needed.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to Can you on Wed Oct 9 17:35:49 2024
    Am Wed, 09 Oct 2024 16:50:55 +0200 schrieb WM:
    On 09.10.2024 16:40, FromTheRafters wrote:
    WM pretended :
    On 09.10.2024 12:12, FromTheRafters wrote:
    WM presented the following explanation :

    Theorem: If every endsegment has infinitely many numbers, then
    infinitely many numbers are in all endsegments.
    Proof: If not, then there would be at least one endsegment with less >>>>> numbers.
    A conjecture is not a proof. This one is simply another non sequitur.
    Inclusion-monotony proves that all infinite endsegments have a common
    infinite subset because only a loss of elements is possible. As long
    as all endsegments are infinite, the loss has spared an infinite set
    common to all.
    Only as long as. Then we just get some E(n) for some finite n.

    Or use a finite example.
    Diminish the set {1, 2, 3, 4, 5, 6, 7, 8, 9, 10} to get {2, 3, 4, 5,
    6, 7, 8, 9, 10}
    {3, 4, 5, 6, 7, 8, 9, 10}
    {4, 5, 6, 7, 8, 9, 10}
    {5, 6, 7, 8, 9, 10}
    ...
    As long as five numbers remain in all sets, they are a common subset
    of all sets.
    Finite sets again, I don't care how many.
    Try using infinite sets.
    The completed sets are infinite.
    Can you write that out for me?

    If there were a last as well as a first you would be right, but there
    is no last to be in all endsegments,
    The same numbers beyond any n are in all infinite endsegments. There are infinitely many because there is no last number.
    Exactly. There is no last n.

    so it is empty.
    Infinitely many numbers in all infinite endsegments do not make an empty intersection.
    NB there are infinitely many endsegments (for each element...).
    An infinite set can follow only on a finite number n.
    Never contradicted.
    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Wed Oct 9 17:30:28 2024
    Am Wed, 09 Oct 2024 16:40:21 +0200 schrieb WM:
    On 09.10.2024 16:13, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 08.10.2024 23:08, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 07.10.2024 18:11, Alan Mackenzie wrote:
    What I should have written (WM please take note) is:

    The idea of one countably infinite set being "bigger" than another >>>>>> countably infinite set is simply nonsense.
    The idea is supported by the fact that set A as a superset of set B
    is bigger than B.
    What do you mean by "bigger" as applied to two infinite sets when one
    of them is not a subset of the other?
    That is not in every case defined. But here are some rules:
    Not all infinite sets can be compared by size, but we can establish
    some useful rules.
    Possibly. But these rules would require proof, which you haven't
    supplied.
    These rules are self-evident.
    I.e. can be dismissed without comment.

    This breaks down in a contradiction, as shown by Richard D in another
    post: To repeat his idea:
    The set {0, 2, 4, 6, ...} is a subset of the natural numbers N,
    {0, 1, 2, 3, 4, 5, 6, ...}, thus is smaller than it.
    We can replace the second set by one of the same "size" by multiplying
    each of its members by 4. We then get the set
    {0, 4, 8, ...}.
    Now this third set is a subset of the first hence is smaller than it.

    No. When we *in actual infinity* multiply all |ℕ|natural numbers by 2,
    then we keep |ℕ| numbers but only half of them are smaller than ω, i.e., are natural numbers. The other half is larger than ω.
    So 2N = G u {w, w+2, w+4, ..., w+w-2}?

    Theorem: If every endsegment has infinitely many numbers, then
    infinitely many numbers are in all endsegments.
    That is simply false. You cannot specify a single number which is in
    all endsegments.
    True. This proves dark numbers.
    It is astounding to see you jump from "there is no such number" to
    "surely there must be one anyway".

    Proof: If not, then there would be at least one endsegment with less
    numbers.
    ... which is gobbledegook, not maths.

    Note: The shrinking endsegments cannot acquire new numbers.
    An end segment is what it is. It doesn't change.
    But the terms of the sequence do. Here is a simple finite example:
    {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
    {2, 3, 4, 5, 6, 7, 8, 9, 10}
    {3, 4, 5, 6, 7, 8, 9, 10}
    {4, 5, 6, 7, 8, 9, 10}
    {5, 6, 7, 8, 9, 10}
    {6, 7, 8, 9, 10}
    {7, 8, 9, 10}
    {8, 9, 10}
    {9, 10}
    {10}
    { } .
    Theorem: Every set that contains at least 3 numbers (call it TN-set)
    holds these numbers in common with all TN-sets. Quantifier shift: There
    is a subset of three elements common to all TN-sets.
    In the infinite case: All predecessors are supersets. But we are not
    interested in some finitely indexed endsegment.

    Then we get: All sets which have lost at most n elements have the
    remainder in common. Note: All sets which are infinite have lost at most
    a finite number of elements.
    But what about the limit case, the intersection of all endsegments,
    or the set which has lost an infinite number of elements?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to All on Wed Oct 9 17:47:31 2024
    Am Wed, 09 Oct 2024 18:56:29 +0200 schrieb WM:
    Am 09.10.2024 um 18:12 schrieb Alan Mackenzie:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    Dark numbers don't exist, or at least they're not natural numbers.
    There is no number in each and every end segment of N.
    True. But those endsegments which have lost only finitely many numbers
    and yet contain infinitely many, have an infinite intersection.
    End segments don't "lose" anything. They are what they are, namely
    well defined sets. Note that your "True" in your last paragraph,
    agrees that the intersection of all end segments is empty, which you
    immediately contradict by asserting it is not empty.
    You do not understand the least! The intersection of all endsegments is empty. The intersection of infinite endsegments is infinite.
    What does this --------------^ specify exactly that distinguishes it from
    the preceding sentence? Especially since both all segments are infinite,
    and there are infinitely many of them.

    Note: The shrinking endsegments cannot acquire new numbers.
    An end segment is what it is. It doesn't change.
    But the terms of the sequence do. Here is a simple finite example:
    {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
    {2, 3, 4, 5, 6, 7, 8, 9, 10}
    {3, 4, 5, 6, 7, 8, 9, 10}
    {4, 5, 6, 7, 8, 9, 10}
    {5, 6, 7, 8, 9, 10}
    {6, 7, 8, 9, 10}
    {7, 8, 9, 10}
    {8, 9, 10}
    {9, 10}
    {10}
    { } .
    Theorem: Every set that contains at least 3 numbers (call it TN-set) >>>>> holds these numbers in common with all TN-sets.
    Now complete all sets by the natural numbers > 10 and complete the
    sequence.
    Then you get different sets, which weren't the ones you were trying to
    reason about.
    The completion of the above sets does not change the principle:
    Non-empty inclusion-monotonic sets like infinite endsegments have a
    non-empty intersection. All endsegments have an empty intersection.
    You should really be more careful with your phrasing. Intersection with
    what?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to All on Wed Oct 9 17:40:58 2024
    Am Wed, 09 Oct 2024 17:39:36 +0200 schrieb WM:
    On 09.10.2024 17:11, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:
    No. When we *in actual infinity* multiply all |ℕ|natural numbers by 2, >>> then we keep |ℕ| numbers but only half of them are smaller than ω,
    i.e., are natural numbers. The other half is larger than ω.

    Ha ha ha ha! This is garbage. If you think doubling some numbers
    gives results which are "larger than ω" you'd better be prepared to
    give an example of such a number. But you're surely going to tell me
    that these are "dark numbers

    {1, 2, 3, ..., ω}*2 = {2, 4, 6, ..., ω*2} .
    Should all places ω+2, ω+4, ω+6, ... remain empty?
    You haven't even written them down on the right. Are they included?
    The ellipsis commonly only goes up to w.

    Should the even numbers in spite of doubling remain below ω?
    What else would you expect?

    Then they must occupy places not existing before. That means the
    original set had not contained all natural numbers. That mans no actual
    or complete infinity.
    Of course not. For every n, also n+1, n*2 and n^n are already included.

    Theorem: If every endsegment has infinitely many numbers, then
    infinitely many numbers are in all endsegments.
    That is simply false. You cannot specify a single number which is in
    all endsegments.
    True. This proves dark numbers.
    Dark numbers don't exist, or at least they're not natural numbers.
    There is no number in each and every end segment of N.
    True. But those endsegments which have lost only finitely many numbers
    and yet contain infinitely many, have an infinite intersection.
    Not what we are discussing.

    Note: The shrinking endsegments cannot acquire new numbers.
    Why should it.
    An end segment is what it is. It doesn't change.
    But the terms of the sequence do. Here is a simple finite example:
    {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
    {2, 3, 4, 5, 6, 7, 8, 9, 10}
    {3, 4, 5, 6, 7, 8, 9, 10}
    {4, 5, 6, 7, 8, 9, 10}
    {5, 6, 7, 8, 9, 10}
    {6, 7, 8, 9, 10}
    {7, 8, 9, 10}
    {8, 9, 10}
    {9, 10}
    {10}
    { } .
    Example of what? The reasoning you might do on finite sets mostly
    isn't applicable to infinite sets.
    Why not? The essence is that only finitely many numbers have been lost
    and the rest is remaining.
    So, for an infinite number of infinite sets infinitely many numbers
    have been "lost", leaving nothing.

    Theorem: Every set that contains at least 3 numbers (call it TN-set)
    holds these numbers in common with all TN-sets.
    Which "these"?

    Quantifier shift: There is a subset of three elements common to all
    TN-sets. Understood?
    Yes, I understand completely.
    No.
    LOL

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From Alan Mackenzie@21:1/5 to invalid@no.org on Wed Oct 9 19:13:37 2024
    WM <invalid@no.org> wrote:
    Am 09.10.2024 um 18:12 schrieb Alan Mackenzie:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    You've misunderstood the nature of N. The set is not
    {1, 2, 3, ..., ω}, it is {1, 2, 3, ...}.

    I use ℕ U {ω} for clarity.

    You would do better not to do so. It gives wrong results.

    Should all places ω+2, ω+4, ω+6, ... remain empty?

    It's not clear what you mean by this. There are no such "places".

    According to Cantor they are there in actual infinity.

    More like according to your misunderstanding of Cantor. There are no
    such things as "places" in sets, just elements. There certainly aren't "places" in a set that, somehow, can be "occupied" or "empty".

    Should the even numbers in spite of doubling remain below ω?

    Yes, of course.

    Then they must occupy places not existing before.

    No. Remember the set is infinite, so you cannot use finite intuition to
    reason about it.

    Numbers multiplied by 2 do not remain unchanged. That is not intuition
    but mathematics.

    True, but your paragraph has absolutely nothing to do with my paragraph
    it puportedly answers.

    That means the original set had not contained all natural numbers. That
    mans no actual or complete infinity.

    Nonsense.

    Sorry, you are a real believer but cannot discuss rational arguments.

    It has nothing to do with "belief". It so happens I studied this
    elementary stuff under the guidance of those who understood it, indeed
    had possibly researched it, at a time when my brain was flexible enough
    to understand and absorb it, which I did.

    You have had none of these advantages, and your efforts later in life to
    pick up set theory have not borne fruit. Let's face it, set theory, even
    at the elementary level, is not your thing. You don't understand it, you
    can't understand it, and you are no longer capable of learning it. Why
    can't you accept that? Day to day living doesn't require set theory.

    Regards, WM

    --
    Alan Mackenzie (Nuremberg, Germany).

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  • From Jim Burns@21:1/5 to All on Wed Oct 9 14:15:33 2024
    On 10/9/2024 4:11 AM, WM wrote:
    On 08.10.2024 19:28, Jim Burns wrote:
    On 10/8/2024 6:18 AM, WM wrote:

    All infinite endsegments contain
    more than any finite set of numbers.

    ...still true if 'infinite' means "very large".

    No.
    Very large
    is not more than any
    finite set.

    There are two dictionaries in use here,
    _yours_ and _ours_

    Yes,
    _your_ very large
    is not more than any
    _your_ finite set.

    Also,
    _our_ very large
    is not more than any
    _our_ finite set.

    That isn't the difference
    between dictionaries.

    ----
    Anything with slightly more than
    _our_ finite is also
    _our_ finite.

    You want to qualify that with 'dark'
    'Dark' is in _your_ dictionary.
    _Ours_ doesn't distinguish 'dark' and 'visible'.

    Dark.or.visible anything with slightly more than
    dark.or.visible _our_ finite is also
    dark.or.visible _our_ finite.

    ----
    ⎛ Anything with slightly more than
    ⎜ _our_ finite is also
    ⎝ _our_ finite.

    Turn it around and get
    ⎛ Anything with slightly fewer than
    ⎜ _our_ infinite is also
    ⎝ _our_ infinite.

    In _your_ 'mathematics and logic'.
    which is _your_ dictionary,
    infinite is countable.down.from
    to finite through dark.
    That's not _our_ dictionary.

    In _our_ dictionary
    infinite is NOT countable.down.from
    to finite through dark.or.visible.
    There isn't any finite
    slightly below infinite.
    There isn't any dark
    slightly below infinite.
    There isn't a gap
    slightly below infinite.
    There isn't a there
    slightly below infinite.

    There are no other end segments,
    none are finite.

    They all have an infinite intersection.

    The intersection of all end.segments is
    the set of natural numbers in each end.segment.
    Each natural number is not.in one or more end.segment.

    All.the.end.segments have an empty intersection.

    The intersection of all end.segments is
    the set of natural numbers in each end.segment.
    Each natural number is not.in one or more end.segment.

    That is true but wrong
    in case of infinite endsegments which are infinite
    because they have not lost all natural numbers.

    The intersection of all end.segments is
    the set of natural numbers in each end.segment.

    Infinitely many are in every infinite endsegment.

    Zero.many are in
    the intersection of all.the.end.segments,
    each of which is infinite.

    Consider end segment E(k+1)
    k+1 is in E(k+1)
    Is k+1 in each end segment? Is k+1 in E(k+2)?
    Is E(k+1)
    the set of natural numbers in each end.segment?

    No, but by definition
    there are infinitely many numbers.
    They are dark.

    ⎛ By definition, dark or visible,
    ⎜ their sets are minimummed or empty, and
    ⎜ they are predecessored or 0, and
    ⎝ they are successored.

    ⎛ Each upper.bounded.set A≠{} of them, {k≥ᵉᵃᶜʰA}≠{}
    ⎜ has a minimum upper.bound min.{k≥ᵉᵃᶜʰA}

    ⎜ Either min.{k≥ᵉᵃᶜʰA} is in A≠{}
    ⎜ or (min.{k≥ᵉᵃᶜʰA})-1 is
    ⎜ a smaller.than.minimum upper.bound: gibberish.

    ⎜ min.{k≥ᵉᵃᶜʰA} is in A≠{}
    ⎜ min.{k≥ᵉᵃᶜʰA} = max.A exists
    ⎜ min.A≠{} exists.

    ⎜ Upper.bounded A≠{} is two.ended.
    ⎜ By a similar argument,
    ⎜ each subset S≠{} is two.ended.

    ⎝ Upper.bounded A≠{} is finite.

    ⎛ Not.upper.bounded A≠{} is not.two.ended.
    ⎝ Not.upper.bounded A≠{} is not.finite.

    Set A≠{} of natural numbers
    is finite iff it is upper.bounded.

    Why else should they be infinite?

    Because each natural number is followed by
    a natural number,

    and thus is not.upper.bounded and not.finite.

    not only one but infinitely many

    Right.
    Because each natural number is followed by
    infinitely.many minima of
    infinitely.many end.segments which it isn't in.

    But one which it isn't in is enough to be
    not.in the intersection of all.

    because 'infinite' DOES NOT mean 'very large'.

    Fine.

    And no 'slightly.fewer.than.infinite' exists,
    neither in the dark nor in the visible.

    All that blather does not contradict the fact that
    infinite endsegments are infinite.

    Theorem:
    If every endsegment has infinitely many numbers,
    then infinitely many numbers are in all endsegments.

    Proof:
    If not, then there would be
    at least one endsegment with less numbers.

    Can you show that without a quantifier shift,
    which is unreliable?

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  • From Moebius@21:1/5 to All on Thu Oct 10 11:37:40 2024
    Am 10.10.2024 um 04:26 schrieb Chris M. Thomasson:
    On 10/4/2024 3:37 PM, FromTheRafters wrote:
    After serious thinking Chris M. Thomasson wrote :
    On 10/4/2024 1:47 PM, FromTheRafters wrote:
    WM formulated the question :
    On 04.10.2024 17:36, Moebius wrote:
    Am 04.10.2024 um 17:10 schrieb joes:
    Am Fri, 04 Oct 2024 11:23:13 +0200 schrieb WM:

    This is the precondition: The unit fractions are all existing! >>>>>>>> If so,
    then they are different fixed points on the positive real line >>>>>>>> above
    zero. Hence one is the first after zero.

    But the MAIN PROBLEM is his usage of "hence", which clearly is not >>>>>> correct. Why on earth should there be a "first after zero".

    Points on the real line are real points. One is the first. [WM]

    Nonsense.

    Sounds intuitive, but for each first there is a firster.

    @Mückeheim: If r is a real number > 0, then r/2 is a real number, and 0
    < r/2 < r.

    No "first" (smallest) real number > 0.

    Now WM is trying to say there is a first real number?

    ...and it is dark. :D

    ROFL!!! ;^D

    So dark that it can't be (a) real! :-)

    See: https://en.wikipedia.org/wiki/Vantablack#/media/File:Vantablack_01.JPG

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  • From joes@21:1/5 to All on Thu Oct 10 11:28:41 2024
    Am Wed, 09 Oct 2024 15:29:17 +0200 schrieb WM:
    On 09.10.2024 14:29, joes wrote:
    Am Wed, 09 Oct 2024 11:41:31 +0200 schrieb WM:
    On 08.10.2024 21:17, joes wrote:
    Am Tue, 08 Oct 2024 17:40:50 +0200 schrieb WM:
    On 08.10.2024 15:36, joes wrote:
    Am Tue, 08 Oct 2024 12:40:26 +0200 schrieb WM:
    On 08.10.2024 12:04, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    The infinite sets contain what? No natural numbers? Natural
    numbers dancing around, sometimes being in a set, sometimes not? >>>>>>> An empty intersection requires that the infinite sets have
    different elements.
    These are infinite sets: {2, 3, 4, …}, {3, 4, 5, …}, {4, 5, 6, …}. >>>>>> They contain all naturals larger than a given one, and nothing
    else. Every natural is part of a finite number of these sets
    (namely, its own value is that number). The set {n+1, n+2, …} does >>>>>> not contain n and is still infinite; there are (trivially)
    infinitely many further such sets. All of them differ.
    All of them differ by a finite set of numbers (which is irrelevant)
    but contain an infinite set of numbers in common.
    Every *finite* intersection.
    As long as infinitely many numbers are captivated in endsegments, only
    finitely many indices are available, and the intersection is between
    finitely many infinite endsegments.
    WDYM, all numbers in the segments are indices.
    All numbers n get indices of endsegments E(n).
    Never can all numbers be used.

    But what about the intersection between all infinitely many segments?
    It is empty.
    What about the core?

    Think about it this way: we are taking the limit of N\{0, 1, 2, …}.
    In the limit not a single natural number remains, let alone infinitely
    many.
    What does this mean for the infinite intersection?
    It is empty because all numbers are becoming indices and then get lost,
    one by one.
    It cannot be empty because there are always numbers remaining.

    If you imagine this as potential infinity,
    No, in potential infinity there are no endsegments.
    Uh. So the naturals don’t have successors?
    They have successors but endsegments are sets and must be complete.
    What is the difference between the sef of successors and an endsegment?
    Why can’t the segments be potentially infinite, or the successors
    actually inf.?
    An endsegment is a set. All elements must exist. That requires actual infinity. In potential infinity numbers come into being - and never all.
    Do you mean there are no potentially infinite sets?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to All on Thu Oct 10 11:26:25 2024
    Am Wed, 09 Oct 2024 15:35:10 +0200 schrieb WM:
    On 09.10.2024 14:26, joes wrote:
    Am Wed, 09 Oct 2024 11:47:57 +0200 schrieb WM:
    On 08.10.2024 21:23, joes wrote:
    Am Tue, 08 Oct 2024 17:30:19 +0200 schrieb WM:
    On 08.10.2024 15:26, joes wrote:
    Am Tue, 08 Oct 2024 12:46:01 +0200 schrieb WM:

    Because infinitely many natural numbers are contained. This is
    true for all infinite sets of the function. Therefore they cannot >>>>>>> have lost all numbers.
    All endsegments are infinite.
    What does „they” refer to in the last sentence?
    All endsegments which have infinitely many natural numbers.
    There are no others.
    We are, again, not talking about an element of the sequence, which
    has a natural index, contains infinitely many successors and is
    missing a finite number of predecessors.
    I am talking about such endsegments. Their intersection is infinite.
    Which intersection?
    Such an intersection is itself part of the sequence.
    Of course.
    What about the intersection of all infinitely many segments?

    What we are talking about is the, pardon, limit of whatever function.
    The limit-endsegment is empty.
    Why?
    Because every n has become an index and then is lost.
    It is impossible to use up an infinity.

    The intersection is infinite because all infinite endsegments contain
    the same infinite set. Some have lost more or less numbers but the
    core remains infinite in all infinite endsegments.
    No. You seem to imagine them as finite but sharing a mysterious omega.
    Instead, replace that with "..." and you got it.
    And how many segments have been intersected?
    (Potentially in-)finitely many because the collection of indices is
    finite as long as an infinite set of numbers remains within the
    endsegments.
    And what if we intersect infinitely many?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From WM@21:1/5 to joes on Thu Oct 10 20:03:46 2024
    On 09.10.2024 19:30, joes wrote:
    Am Wed, 09 Oct 2024 16:40:21 +0200 schrieb WM:
    When we *in actual infinity* multiply all |ℕ|natural numbers by 2,
    then we keep |ℕ| numbers but only half of them are smaller than ω, i.e., >> are natural numbers. The other half is larger than ω.
    So 2N = G u {w, w+2, w+4, ..., w+w-2}?

    If all numbers are there initially and multiplied by 2. And if every
    number 2n is greater than n, then this is unavoidable.

    Note the premise: If all are there. Actual infinity!

    But what about the limit case, the intersection of all endsegments,
    or the set which has lost an infinite number of elements?

    The endsegment which has lost an infinite number of elements is empty
    and causes an empty intersection. But infinite endsegments have not lost
    an infinite number of numbers.

    Regards, WM


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  • From WM@21:1/5 to joes on Thu Oct 10 20:12:56 2024
    On 09.10.2024 19:40, joes wrote:
    Am Wed, 09 Oct 2024 17:39:36 +0200 schrieb WM:
    But those endsegments which have lost only finitely many numbers
    and yet contain infinitely many, have an infinite intersection.
    Not what we are discussing.

    It is claimed that all endsegments are infinite, hence have lost only
    finitely many numbers as indices, but have an empty intersection.

    So, for an infinite number of infinite sets infinitely many numbers
    have been "lost", leaving nothing.

    True. Therefore not all endsegments are infinity.

    Regards, WM

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  • From WM@21:1/5 to joes on Thu Oct 10 20:08:03 2024
    On 09.10.2024 19:35, joes wrote:
    Am Wed, 09 Oct 2024 16:50:55 +0200 schrieb WM:

    Inclusion-monotony proves that all infinite endsegments have a common
    infinite subset because only a loss of elements is possible. As long
    as all endsegments are infinite, the loss has spared an infinite set
    common to all.
    Only as long as. Then we just get some E(n) for some finite n.

    But finite endsegments E(n) and their indices n cannot be seen.

    Or use a finite example.
    Diminish the set {1, 2, 3, 4, 5, 6, 7, 8, 9, 10} to get {2, 3, 4, 5,
    6, 7, 8, 9, 10}
    {3, 4, 5, 6, 7, 8, 9, 10}
    {4, 5, 6, 7, 8, 9, 10}
    {5, 6, 7, 8, 9, 10}
    ...
    As long as five numbers remain in all sets, they are a common subset
    of all sets.
    Finite sets again, I don't care how many.
    Try using infinite sets.
    The completed sets are infinite.
    Can you write that out for me?

    Of course.

    {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, ...}
    {2, 3, 4, 5, 6, 7, 8, 9, 10, ...}
    {3, 4, 5, 6, 7, 8, 9, 10, ...}
    ...


    If there were a last as well as a first you would be right, but there
    is no last to be in all endsegments,
    The same numbers beyond any n are in all infinite endsegments. There are
    infinitely many because there is no last number.
    Exactly. There is no last n.

    so it is empty.
    Infinitely many numbers in all infinite endsegments do not make an empty
    intersection.
    NB there are infinitely many endsegments (for each element...).

    But only finitely many with infinite contents.

    Regards, WM

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  • From WM@21:1/5 to joes on Thu Oct 10 19:56:26 2024
    On 09.10.2024 19:08, joes wrote:
    Am Wed, 09 Oct 2024 14:48:17 +0200 schrieb WM:

    Not all infinite sets can be compared by size, but we can establish some
    useful rules.

    That is a weakness of your notion of cardinality.

    The weaker weakness of Cantors Cardinality is that it is complete nonsense.

    How do you compare finite sets?

    By their numbers of elements.

    Nonsense. Only potential infinity is used. Never the main body is
    applied.
    What "main body"?

    The actually infinite numbers of dark elements.

    For Cantor's enumeration of all fractions I have given a simple
    disproof.
    Your "proofs" tend to be nonsense.
    Theorem: If every endsegment has infinitely many numbers, then
    infinitely many numbers are in all endsegments.
    Proof: If not, then there would be at least one endsegment with less
    numbers.
    I struggle to follow this illogic. Why should one segment have less
    numbers?

    All have the same numbers, namely ℕ. Some of the first numbers are transformed from contents to indices and than lost. But almost all
    numbers, namely ℵo, remain (because after every definable natnumber n ℵo numbers follow). If the intersection is less than ℵo, at least one
    endsegment must have fewer than ℵo numbers.

    Note: The shrinking endsegments cannot acquire new numbers.
    Not necessary, they already contain as many as needed.

    It would be nessessary if all are infinite but their intersection is
    empty. Then the infinitely many numbers cannot be the same in all
    endsegments. Consider this finite example:

    {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
    {2, 3, 4, 5, 6, 7, 8, 9, 10}
    {3, 4, 5, 6, 7, 8, 9, 10}
    {4, 5, 6, 7, 8, 9, 10}
    {5, 6, 7, 8, 9, 10}
    {6, 7, 8, 9, 10}
    {7, 8, 9, 10}
    {8, 9, 10}
    {9, 10}
    {10}
    { } .

    Satz: Jede Menge, die mindestens drei Elemente enthält (nennen wir diese Mengen DE), enthält drei Elemente gemeinsam mit allen DE-Mengen. Es gibt
    also drei Elemente, die in allen DE-Mengen enthalten sind. Das ist ein erlaubter Quantorentausch.

    Regards, WM

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  • From WM@21:1/5 to FromTheRafters on Thu Oct 10 20:25:01 2024
    On 09.10.2024 20:07, FromTheRafters wrote:
    SETS DON'T CHANGE.

    The set of French people has changed and will change.

    Regards, WM

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  • From WM@21:1/5 to Alan Mackenzie on Thu Oct 10 20:32:19 2024
    On 09.10.2024 21:13, Alan Mackenzie wrote:
    WM <invalid@no.org> wrote:
    Am 09.10.2024 um 18:12 schrieb Alan Mackenzie:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    You've misunderstood the nature of N. The set is not
    {1, 2, 3, ..., ω}, it is {1, 2, 3, ...}.

    I use ℕ U {ω} for clarity.

    You would do better not to do so. It gives wrong results.

    It gives unfamiliar results because you have no clear picture of actual infinity. If all natnumbers are there and if 2n is greater than n, then
    the doubled numbers do not fit into ℕ. But note, that is only true if
    all natnumbers do exist.

    If not all do exist, te doubling yields larger natnumbers, some of which
    have not existed before. But that means potential infinity.

    Numbers multiplied by 2 do not remain unchanged. That is not intuition
    but mathematics.

    True,

    Fine, then you can follow the above discussion. Either doubling creates
    new natural numbers. Then not all have been doubled. Or all have been
    doubled, then some products fall outside of ℕ.

    Regards, WM

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  • From WM@21:1/5 to joes on Thu Oct 10 20:18:48 2024
    On 09.10.2024 19:47, joes wrote:
    Am Wed, 09 Oct 2024 18:56:29 +0200 schrieb WM:
    Am 09.10.2024 um 18:12 schrieb Alan Mackenzie:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    Especially since both all segments are infinite,
    and there are infinitely many of them.

    Impossible. Infinite endsegments contain almost all numbers. Therefore
    it is not possible that almost all numbers are used as indices.

    Note: The shrinking endsegments cannot acquire new numbers.
    An end segment is what it is. It doesn't change.
    But the terms of the sequence do. Here is a simple finite example: >>>>>> {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
    {2, 3, 4, 5, 6, 7, 8, 9, 10}
    {3, 4, 5, 6, 7, 8, 9, 10}
    {4, 5, 6, 7, 8, 9, 10}
    {5, 6, 7, 8, 9, 10}
    {6, 7, 8, 9, 10}
    {7, 8, 9, 10}
    {8, 9, 10}
    {9, 10}
    {10}
    { } .
    The completion of the above sets does not change the principle:
    Non-empty inclusion-monotonic sets like infinite endsegments have a
    non-empty intersection. All endsegments have an empty intersection.
    You should really be more careful with your phrasing. Intersection with
    what?

    The intersection of all endsegments containing at least 3 numbers with
    just these endsegments contains 3 numbers.
    The intersection of all endsegments with all endsegments is empty.

    Regards, WM

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  • From WM@21:1/5 to joes on Thu Oct 10 20:39:39 2024
    On 10.10.2024 13:26, joes wrote:
    Am Wed, 09 Oct 2024 15:35:10 +0200 schrieb WM:

    All endsegments are infinite.
    Then their intersection is infinite too.

    We are, again, not talking about an element of the sequence, which
    has a natural index, contains infinitely many successors and is
    missing a finite number of predecessors.
    I am talking about such endsegments. Their intersection is infinite.
    Which intersection?

    Their intersection.

    Such an intersection is itself part of the sequence.
    Of course.
    What about the intersection of all infinitely many segments?

    It is empty.

    What we are talking about is the, pardon, limit of whatever function. >>>> The limit-endsegment is empty.
    Why?
    Because every n has become an index and then is lost.
    It is impossible to use up an infinity.

    Then it is impossible to enumerate all fractions.

    And what if we intersect infinitely many?

    Then infinitely many indices are applied and there are endsegments which
    have lost them.

    Regards, WM


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  • From WM@21:1/5 to Alan Mackenzie on Thu Oct 10 20:53:07 2024
    On 10.10.2024 20:45, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    If all natnumbers are there and if 2n is greater than n, then the
    doubled numbers do not fit into ℕ.

    For any finite n greater than zero, 2n is greater than n. The same
    does not hold for infinite n.

    There are no infinite n = natural numbers.

    Numbers multiplied by 2 do not remain unchanged. That is not intuition >>>> but mathematics.

    True,

    Fine, then you can follow the above discussion. Either doubling creates
    new natural numbers. Then not all have been doubled. Or all have been
    doubled, then some products fall outside of ℕ.

    No. Not even close.

    Deplorable. But note that all natural numbers are finite and follow this
    law: When doubled then 2n > n. If a set of natural numbers is doubled,
    then the results cover a larger set than before.

    Regards, WM

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  • From Alan Mackenzie@21:1/5 to wolfgang.mueckenheim@tha.de on Thu Oct 10 18:45:27 2024
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 09.10.2024 21:13, Alan Mackenzie wrote:
    WM <invalid@no.org> wrote:
    Am 09.10.2024 um 18:12 schrieb Alan Mackenzie:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    You've misunderstood the nature of N. The set is not
    {1, 2, 3, ..., ω}, it is {1, 2, 3, ...}.

    I use ℕ U {ω} for clarity.

    You would do better not to do so. It gives wrong results.

    It gives unfamiliar results because you have no clear picture of actual infinity.

    It is you who lacks a clear picture of infinity.

    If all natnumbers are there and if 2n is greater than n, then the
    doubled numbers do not fit into ℕ.

    "Fitting into" a set is an entirely wrong way of conceiving of it. Sets
    have members. They are not containers that may not be large enough.
    For any finite n greater than zero, 2n is greater than n. The same
    does not hold for infinite n.

    But note, that is only true if all natnumbers do exist.

    Do you actually understand what it means for a mathematical entity to
    exist?

    All natural numbers exist by Peano's axioms. Or more prosaically, you
    cannot point to a natural number which doesn't exist.

    If not all do exist, the doubling yields larger natnumbers, some of which have not existed before. But that means potential infinity.

    No, you don't understand what existence means. All natural numbers
    exist, and have done since Peano, if not forever. But that's drifting
    off of mathematics into philosophy.

    Numbers multiplied by 2 do not remain unchanged. That is not intuition
    but mathematics.

    True,

    Fine, then you can follow the above discussion. Either doubling creates
    new natural numbers. Then not all have been doubled. Or all have been doubled, then some products fall outside of ℕ.

    No. Not even close.

    Regards, WM

    --
    Alan Mackenzie (Nuremberg, Germany).

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  • From WM@21:1/5 to joes on Thu Oct 10 20:46:24 2024
    On 10.10.2024 13:28, joes wrote:
    Am Wed, 09 Oct 2024 15:29:17 +0200 schrieb WM:
    On 09.10.2024 14:29, joes wrote:
    Am Wed, 09 Oct 2024 11:41:31 +0200 schrieb WM:
    On 08.10.2024 21:17, joes wrote:
    Am Tue, 08 Oct 2024 17:40:50 +0200 schrieb WM:
    On 08.10.2024 15:36, joes wrote:
    Am Tue, 08 Oct 2024 12:40:26 +0200 schrieb WM:
    On 08.10.2024 12:04, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    The infinite sets contain what? No natural numbers? Natural
    numbers dancing around, sometimes being in a set, sometimes not? >>>>>>>> An empty intersection requires that the infinite sets have
    different elements.
    These are infinite sets: {2, 3, 4, …}, {3, 4, 5, …}, {4, 5, 6, …}.
    They contain all naturals larger than a given one, and nothing
    else. Every natural is part of a finite number of these sets
    (namely, its own value is that number). The set {n+1, n+2, …} does >>>>>>> not contain n and is still infinite; there are (trivially)
    infinitely many further such sets. All of them differ.
    All of them differ by a finite set of numbers (which is irrelevant) >>>>>> but contain an infinite set of numbers in common.
    Every *finite* intersection.
    As long as infinitely many numbers are captivated in endsegments, only >>>> finitely many indices are available, and the intersection is between
    finitely many infinite endsegments.
    WDYM, all numbers in the segments are indices.
    All numbers n get indices of endsegments E(n).
    Never can all numbers be used.

    But what about the intersection between all infinitely many segments?
    It is empty.
    What about the core?

    Think about it this way: we are taking the limit of N\{0, 1, 2, …}. >>>> In the limit not a single natural number remains, let alone infinitely >>>> many.
    What does this mean for the infinite intersection?
    It is empty because all numbers are becoming indices and then get lost,
    one by one.
    It cannot be empty because there are always numbers remaining.

    Then never all fractions can be indexed because always numbers are
    remaining in 1/1, 1/2, 2/1, 1/3, 2/2, 3/1, 1/4, 2/3, 3/2, 4/1, 1/5, 2/4,
    3/3, 4/2, 5/1, 1/6, 2/5, 3/4, 4/3, 5/2, 6/1, ...
    An endsegment is a set. All elements must exist. That requires actual
    infinity. In potential infinity numbers come into being - and never all.
    Do you mean there are no potentially infinite sets?

    That is a matter of defiition. In my books I use only potetial infinity.
    I never mention actual infinity. But I talk about sets of numbers like
    ℕ, 𝔾, ℚ, ℝ.
    But set theorists claim that sets must be unchangeable.

    When in potential infinity "all" natural numbers are doubled, then
    greater, i.e., new natural numbers are created. Therefore the set ℕ has changed.

    Regards, WM

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  • From Moebius@21:1/5 to All on Thu Oct 10 21:07:29 2024
    Am 10.10.2024 um 20:45 schrieb Alan Mackenzie:

    Do you actually understand what it means for a mathematical entity to
    exist?

    :

    No, you don't understand what existence means.

    "Die Schlüsselfrage, die zu verstehen Du zu dumm únd zu blöde bist, Mückenheim, ist, was meinen wir mit "existieren"?" (Moebius, dsm)

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  • From Moebius@21:1/5 to All on Thu Oct 10 21:11:04 2024
    Am 10.10.2024 um 20:45 schrieb Alan Mackenzie:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    It gives unfamiliar results because you have no clear picture of actual
    infinity.

    It is you who lacks a clear picture of infinity.

    Definitely. Mückenheim is suffering from infinity dyslexia.

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  • From Moebius@21:1/5 to All on Thu Oct 10 21:12:12 2024
    Am 10.10.2024 um 20:45 schrieb Alan Mackenzie:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    It gives unfamiliar results because you have no clear picture of actual
    infinity.

    It is you who lacks a clear picture of infinity.

    Definitely. Mückenheim is suffering from infinity dyscalculia.

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  • From joes@21:1/5 to All on Thu Oct 10 19:48:48 2024
    Am Wed, 09 Oct 2024 18:47:39 +0200 schrieb WM:
    Am 09.10.2024 um 18:12 schrieb Alan Mackenzie:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    You've misunderstood the nature of N. The set is not {1, 2, 3, ...,
    ω}, it is {1, 2, 3, ...}.
    I use ℕ U {ω} for clarity.
    This makes it clear that w-1, w-2 and so on are not included.

    Should all places ω+2, ω+4, ω+6, ... remain empty?
    It's not clear what you mean by this. There are no such "places".
    According to Cantor they are there in actual infinity.
    What are these "places"?

    Should the even numbers in spite of doubling remain below ω?
    Yes, of course.
    Then they must occupy places not existing before.
    No. Remember the set is infinite, so you cannot use finite intuition
    to reason about it.
    Numbers multiplied by 2 do not remain unchanged. That is not intuition
    but mathematics.
    They do, however, remain natural.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to All on Thu Oct 10 19:49:12 2024
    Am Wed, 09 Oct 2024 15:49:27 +0200 schrieb WM:
    On 09.10.2024 12:12, FromTheRafters wrote:
    WM presented the following explanation :

    Theorem: If every endsegment has infinitely many numbers, then
    infinitely many numbers are in all endsegments.
    Proof: If not, then there would be at least one endsegment with less
    numbers.
    A conjecture is not a proof. This one is simply another non sequitur.
    Inclusion-monotony proves that all infinite endsegments have a common infinite subset because only a loss of elements is possible. As long as
    all endsegments are infinite, the loss has spared an infinite set common
    to all.
    You really mean as long as only finitely many numbers are missing.

    If you can't understand try to find a counterexample.
    Or use a finite example.
    Notice anything? You should write it like this:
    {1, 2, 3, ...}
    {2, 3, 4, ...}
    {3, 4, 5, ...}
    ...


    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to All on Thu Oct 10 19:51:11 2024
    Am Wed, 09 Oct 2024 15:24:21 +0200 schrieb WM:
    On 09.10.2024 14:38, joes wrote:
    Am Wed, 09 Oct 2024 10:11:20 +0200 schrieb WM:

    An end segment E is infinite because each natural number has a
    successor,
    so no element of E is max.E so not all nonempty subsets are two.ended
    so E is not finite.
    Therefore every infinite endsegment has infinitely many elements with
    each predecessor in common. This is valid for all infinite
    endsegments.
    With each, but not with all at once (cf. quantifier shift).
    With all infinite endsegments at once! Inclusion monotony. If you can't understand try to find a counterexample.


    There are no other end segments, none are finite.
    They all have an infinite intersection.
    Intersection with what?
    Only the intersection of finitely many segments is infinite.

    because 'infinite' DOES NOT mean 'very large'.
    Theorem: If every endsegment has infinitely many numbers, then
    infinitely many numbers are in all endsegments.
    Invalid quantifier shift.
    Valid quantifier shift.
    You haven't proved your logical rule in general. In particular, you can't
    use it here to argue it is valid, that would be circular.
    Can you explain what a quantifier shift is?

    Proof: If not, then there would be at least one endsegment with less
    numbers.
    No. Why do you think that?
    The shrinking endsegments have all their elements in common with all
    their predecessors. As long as all are infinite, then all have an
    infinite set in common.
    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
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  • From joes@21:1/5 to All on Thu Oct 10 19:54:32 2024
    Am Thu, 10 Oct 2024 20:53:07 +0200 schrieb WM:
    On 10.10.2024 20:45, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    If all natnumbers are there and if 2n is greater than n, then the
    doubled numbers do not fit into ℕ.
    For any finite n greater than zero, 2n is greater than n. The same
    does not hold for infinite n.
    There are no infinite n = natural numbers.
    Exactly! There are furthermore no infinite doubles of naturals (2n).

    Numbers multiplied by 2 do not remain unchanged.
    Either doubling
    creates new natural numbers. Then not all have been doubled. Or all
    have been doubled, then some products fall outside of ℕ.
    No. Not even close.
    Deplorable. But note that all natural numbers are finite and follow this
    law: When doubled then 2n > n. If a set of natural numbers is doubled,
    then the results cover a larger set than before.
    Additionally: if n is finite, so is 2n. It cannot go beyond w.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
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  • From Jim Burns@21:1/5 to All on Thu Oct 10 16:47:34 2024
    On 10/9/2024 11:39 AM, WM wrote:
    On 09.10.2024 17:11, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    No.
    When we *in actual infinity*
    multiply all |ℕ|natural numbers by 2,
    then we keep |ℕ| numbers
    but only half of them are smaller than ω,
    i.e., are natural numbers.
    The other half is larger than ω.

    You (WM) are treating ω as though it is (our) finite.
    ω is the first (our) transfinite ordinal: not finite.

    Ha ha ha ha! This is garbage.
    If you think doubling some numbers gives results
    which are "larger than ω"
    you'd better be prepared to give
    an example of such a number.
    But you're surely going to tell me that
    these are "dark numbers

    {1, 2, 3, ..., ω}*2 = {2, 4, 6, ..., ω*2} .

    Each γ≠0 preceding ω is (our) finite.

    Each γ≠0 preceding ω is predecessored and
    each β≠0 preceding γ is predecessored.

    γ < ω ⇔
    ⎛ for each β: 0 < β ≤ γ ⇒
    ⎝ exists α: 0 ≤ α < β ∧ α+1 = β

    γ < ω ⇔
    ∀β ∈ ⦅0,γ⟧: ∃α ∈ ⟦0,β⦆: α+1=β

    ----
    ⎛ If
    ⎜ γ≠0 preceding ω is predecessored and
    ⎜ each β≠0 preceding γ is predecessored,
    ⎜ then
    ⎜ γ+1≠0 is predecessored and
    ⎜ each β≠0 preceding γ+1 is predecessored, and
    ⎝ γ+1 precedes ω

    Therefore,
    γ < ω ⇒ γ+1 < ω

    ----
    ⎛ 0+γ = γ
    ⎝ (β+1)+γ = (β+γ)+1

    β < ω ∧ γ < ω ⇒ β+γ < ω

    ⎛ Assume a counterexample.
    ⎜ Assume
    ⎜ β < ω ∧ γ < ω ∧ β+γ ≥ ω

    ⎜ The nonempty set
    ⎜ {β < ω: γ < ω ∧ β+γ ≥ ω)
    ⎜ holds a minimum 𝔊+1 and
    ⎜ 𝔊+1 has a predecessor 𝔊 not.in the set.

    ⎜ 𝔊 < 𝔊+1 < ω ∧ γ < ω
    ⎜ 𝔊+γ < ω ∧ (𝔊+1)+γ ≥ ω

    ⎜ However,
    ⎜ γ < ω ⇒ γ+1 < ω
    ⎜ 𝔊+γ < ω ⇒ (𝔊+γ)+1 < ω
    ⎜ (𝔊+γ)+1 = (𝔊+1)+γ
    ⎜ (𝔊+1)+γ < ω
    ⎝ Contradiction.

    Therefore,
    β < ω ∧ γ < ω ⇒ β+γ < ω

    ----
    ⎛ 0×γ = 0
    ⎝ (β+1)×γ = (β×γ)+γ

    β < ω ∧ γ < ω ⇒ β×γ < ω

    ⎛ Assume a counterexample.
    ⎜ Assume
    ⎜ β < ω ∧ γ < ω ∧ β×γ ≥ ω

    ⎜ The nonempty set
    ⎜ {β < ω: γ < ω ∧ β×γ ≥ ω)
    ⎜ holds a minimum 𝔊+1 and
    ⎜ 𝔊+1 has a predecessor 𝔊 not.in the set.

    ⎜ 𝔊 < 𝔊+1 < ω ∧ γ < ω
    ⎜ 𝔊×γ < ω ∧ (𝔊+1)×γ ≥ ω

    ⎜ However,
    ⎜ β < ω ∧ γ < ω ⇒ β+γ < ω
    ⎜ 𝔊×γ < ω ⇒ (𝔊×γ)+γ < ω
    ⎜ (𝔊×γ)+γ = (𝔊+1)×γ
    ⎜ (𝔊+1)×γ < ω
    ⎝ Contradiction.

    Therefore,
    β < ω ∧ γ < ω ⇒ β×γ < ω

    {1, 2, 3, ..., ω}*2 = {2, 4, 6, ..., ω*2} .

    γ < ω ⇒ γ+1 < ω
    There is no first successor out of ⟦0,ω⦆
    There is no successor out of ⟦0,ω⦆

    β < ω ∧ γ < ω ⇒ β+γ < ω
    There is no first sum out of ⟦0,ω⦆
    There is no sum out of ⟦0,ω⦆

    β < ω ∧ γ < ω ⇒ β×γ < ω
    There is no first product out of ⟦0,ω⦆
    There is no product out of ⟦0,ω⦆

    {1,2,3,...} ᵉᵃᶜʰ< ω

    {1,2,3,...}ᵉᵃᶜʰ×2 = {2,4,6,...} ᵉᵃᶜʰ< ω

    Should all places ω+2, ω+4, ω+6, ... remain empty?

    Should ω be (our) finite?

    Should the even numbers in spite of doubling
    remain below ω?
    Then they must occupy places not existing before.
    That means
    the original set had not contained all natural numbers.

    ω is the first (our) transfinite ordinal.
    ∀γ: γ ∈ ⟦0,ω⦆ ⇔
    ∀β ∈ ⦅0,γ⟧: ∃α ∈ ⟦0,β⦆: α+1=β

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  • From Moebius@21:1/5 to All on Thu Oct 10 23:41:29 2024
    Am 10.10.2024 um 22:42 schrieb Chris M. Thomasson:
    On 10/10/2024 12:24 PM, FromTheRafters wrote:
    After serious thinking WM wrote :
    On 09.10.2024 20:07, FromTheRafters wrote:

    SETS DON'T CHANGE.

    The set of French people has changed and will change.

    Idiot!

    Yes, he's a complete idiot.

    Hint: The set of French people _at a certain time t_, F(t), does not
    "change".

    But if t_1 =/= t_2, F(t_1) may differ from F(t_2).

    <facepalm>

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  • From Moebius@21:1/5 to All on Thu Oct 10 23:47:07 2024
    Am 10.10.2024 um 22:42 schrieb Chris M. Thomasson:
    On 10/10/2024 12:24 PM, FromTheRafters wrote:
    After serious thinking WM wrote :
    On 09.10.2024 20:07, FromTheRafters wrote:

    SETS DON'T CHANGE.

    The set of French people has changed and will change.

    Idiot!

    Yes, he's a complete idiot.

    Hint: The set of French (living) people _at a certain time t_, F(t),
    does not "change".

    But if t_1 =/= t_2, F(t_1) may differ from F(t_2).

    <facepalm>

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  • From joes@21:1/5 to All on Thu Oct 10 23:01:44 2024
    Am Thu, 10 Oct 2024 19:56:26 +0200 schrieb WM:
    On 09.10.2024 19:08, joes wrote:
    Am Wed, 09 Oct 2024 14:48:17 +0200 schrieb WM:

    How do you compare finite sets?
    By their numbers of elements.
    How is that defined?

    Nonsense. Only potential infinity is used. Never the main body is
    applied.
    What "main body"?
    The actually infinite numbers of dark elements.
    Those are of course also bijected, even though you cannot see them.

    For Cantor's enumeration of all fractions I have given a simple
    disproof.
    Your "proofs" tend to be nonsense.
    Theorem: If every endsegment has infinitely many numbers, then
    infinitely many numbers are in all endsegments.
    Proof: If not, then there would be at least one endsegment with less
    numbers.
    I struggle to follow this illogic. Why should one segment have less
    numbers?
    All have the same numbers, namely ℕ. Some of the first numbers are transformed from contents to indices and than lost. But almost all
    numbers, namely ℵo, remain (because after every definable natnumber n ℵo numbers follow). If the intersection is less than ℵo, at least one endsegment must have fewer than ℵo numbers.
    Yes, all of them have |N|=Aleph_0 numbers, which is also the amount
    of segments (duh). Remember that we are intersecting inf. many sets:
    it is only required that there be a set which does not contain that
    number, for every number - there are even infinitely many successor-
    segments that don't!

    Note: The shrinking endsegments cannot acquire new numbers.
    Not necessary, they already contain as many as needed.
    It would be nessessary if all are infinite but their intersection is
    empty. Then the infinitely many numbers cannot be the same in all endsegments.
    Right. Even though all sets are infinite, no two are the same.

    Satz: Jede Menge, die mindestens drei Elemente enthält (nennen wir diese Mengen DE), enthält drei Elemente gemeinsam mit allen DE-Mengen. Es gibt also drei Elemente, die in allen DE-Mengen enthalten sind. Das ist ein erlaubter Quantorentausch.
    A quantifier shift is never valid.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to All on Thu Oct 10 23:07:36 2024
    Am Thu, 10 Oct 2024 20:03:46 +0200 schrieb WM:
    On 09.10.2024 19:30, joes wrote:
    Am Wed, 09 Oct 2024 16:40:21 +0200 schrieb WM:
    When we *in actual infinity* multiply all |ℕ|natural numbers by 2,
    then we keep |ℕ| numbers but only half of them are smaller than ω,
    i.e., are natural numbers. The other half is larger than ω.
    So 2N = G u {w, w+2, w+4, ..., w+w-2}?
    If all numbers are there initially and multiplied by 2. And if every
    number 2n is greater than n, then this is unavoidable.
    Note the premise: If all are there. Actual infinity!
    You say w/2 were natural and comes after the darkness. What is the
    smallest such number, w/w? And what is the biggest number that comes
    before?

    But what about the limit case, the intersection of all endsegments,
    or the set which has lost an infinite number of elements?
    The endsegment which has lost an infinite number of elements is empty
    and causes an empty intersection. But infinite endsegments have not lost
    an infinite number of numbers.
    WDYM "causes"? There is no such segment.
    WDYM "inf. endsegments"? Inf. many of them or inf. sized ones?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From Moebius@21:1/5 to All on Fri Oct 11 00:34:56 2024
    Am 10.10.2024 um 22:42 schrieb Chris M. Thomasson:
    On 10/10/2024 12:24 PM, FromTheRafters wrote:
    After serious thinking WM wrote :
    On 09.10.2024 20:07, FromTheRafters wrote:

    SETS DON'T CHANGE.

    The set of French people has changed and will change.

    Idiot!

    Yes, he's a complete idiot.

    Hint: The set of (living) French people _at a certain time t_, F(t),
    does not "change".

    But if t_1 =/= t_2, F(t_1) may differ from F(t_2).

    <facepalm>

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  • From Richard Damon@21:1/5 to All on Thu Oct 10 21:38:51 2024
    On 10/10/24 2:53 PM, WM wrote:
    On 10.10.2024 20:45, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    If all natnumbers are there and if 2n is greater than n, then the
    doubled numbers do not fit into ℕ.

    For any finite n greater than zero, 2n is greater than n.  The same
    does not hold for infinite n.

    There are no infinite n = natural numbers.

    Numbers multiplied by 2 do not remain unchanged. That is not intuition >>>>> but mathematics.

    True,

    Fine, then you can follow the above discussion. Either doubling creates
    new natural numbers. Then not all have been doubled. Or all have been
    doubled, then some products fall outside of ℕ.

    No.  Not even close.

    Deplorable. But note that all natural numbers are finite and follow this
    law: When doubled then 2n > n. If a set of natural numbers is doubled,
    then the results cover a larger set than before.

    Regards, WM


    You might think so, but that ignores the laws of mathematics of infinite values.

    The SIZE of the set of natural numbers is infinite, and thus obeys the
    laws of infinite numbers. An infinite number, which has a finite number,
    added to, multiplied by, or used as a power, is still that same infinite number. It may seem impossible, but that is the nature of infinite numbers.

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  • From Jim Burns@21:1/5 to Ross Finlayson on Fri Oct 11 00:22:43 2024
    On 10/10/2024 8:54 PM, Ross Finlayson wrote:
    On 10/10/2024 01:47 PM, Jim Burns wrote:

    ω is the first (our) transfinite ordinal.
    ∀γ:  γ ∈ ⟦0,ω⦆  ⇔
    ∀β ∈ ⦅0,γ⟧: ∃α ∈ ⟦0,β⦆: α+1=β

    Halmos has for "infinite-dimensional vector spaces",

    What I _suspect_ is that
    'has' used as it is just above here
    is an idiom I'm not familiar with --
    possibly transported from some non.English language.

    Would you be able to provide some context to
    this way in which you use 'has', Ross?

    so not only is the Archimedean contrived
    either "potential" or "un-bounded",
    so is the matter of the count of dimensions
    and the schema or quantification or
    comprehension of the dimensions,
    where there's a space like R^N in effect, or R^w,
    then for a usual sort of idea that
    "the first transfinite ordinal"
    is only kind of after all those, ...,
    like a "spiral space-filling curve".

    My current best.understanding of your posts of this genre
    is that you are conducting brainstorming exercises,
    in which the most 'points' are awarded for _creativity_
    and not as many for merely connecting ideas in
    a narrative of some kind.

    So, I will no longer try to decipher
    how what you post connects to what I post.
    If my understanding is close to the mark,
    you (RF) might even prefer that they do not connect
    -- more creativity that way..


    What I mean by 'first transfinite ordinal' ω is that,
    of all ordinals which are not.finite,
    ω is the first such ordinal.

    What I mean by 'ordinal' is that
    each set of ordinals holds a minimum or is empty.

    What I mean by 'finite ordinal' γ is that
    it is first (ie, γ=0) or
    its predecessor.ordinal γ-1 exists and,
    for each non.0 prior ordinal β<γ
    its predecessor.ordinal β-1 exists.

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  • From Richard Damon@21:1/5 to Chris M. Thomasson on Fri Oct 11 07:06:53 2024
    On 10/10/24 11:19 PM, Chris M. Thomasson wrote:
    On 10/10/2024 6:38 PM, Richard Damon wrote:
    On 10/10/24 2:32 PM, WM wrote:
    On 09.10.2024 21:13, Alan Mackenzie wrote:
    WM <invalid@no.org> wrote:
    Am 09.10.2024 um 18:12 schrieb Alan Mackenzie:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    You've misunderstood the nature of N.  The set is not
    {1, 2, 3, ..., ω}, it is {1, 2, 3, ...}.

    I use ℕ U {ω} for clarity.

    You would do better not to do so.  It gives wrong results.

    It gives unfamiliar results because you have no clear picture of
    actual infinity. If all natnumbers are there and if 2n is greater
    than n, then the doubled numbers do not fit into ℕ. But note, that is
    only true if all natnumbers do exist.

    No, *YOU* don't understand what actual infinity is like as you picture
    it just like the finite, but bigger.


    If not all do exist, te doubling yields larger natnumbers, some of
    which have not existed before. But that means potential infinity.

    But there aren't any natural numbers that have not existed before.
    That is just showing that your "actual infinity" is a finite set that
    you grabbed on the way to infinity, but didn't get there yet.



    Actual infinity means you need to wait until you get there. The
    problem is finite creatures can't do that, so can't handle actual
    infinity.
    [...]

    What do you mean? I can say all the natural numbers. That was pretty
    fast for all of them. ;^)


    Which names the set, but not actually list the contents of that set.

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  • From Jim Burns@21:1/5 to Richard Damon on Fri Oct 11 14:02:04 2024
    On 10/11/2024 7:06 AM, Richard Damon wrote:
    On 10/10/24 11:19 PM, Chris M. Thomasson wrote:
    On 10/10/2024 6:38 PM, Richard Damon wrote:
    On 10/10/24 2:32 PM, WM wrote:

    If not all do exist,
    te doubling yields larger natnumbers,
    some of which have not existed before.
    But that means potential infinity.

    But there aren't any natural numbers that
    have not existed before.
    That is just showing that
    your "actual infinity" is a finite set that
    you grabbed on the way to infinity,
    but didn't get there yet.

    Actual infinity means
    you need to wait until you get there.
    The problem is
    finite creatures can't do that,
    so can't handle actual infinity.

    What do you mean?
    I can say all the natural numbers.
    That was pretty fast for all of them. ;^)

    Which names the set,
    but not actually list the contents of that set.

    Is a set
    without a finite list but
    with a finite description
    potential or actual?

    It looks to me as though the consensus is:
    we don't care what the answer is.

    We have a description of ℕ and its elements,
    free of mentions of 'potential' and 'actual'.
    From its description,
    we can reason about it and its elements.
    "Potential ℕ" vs. "actual ℕ" leaves unchanged
    which claims we reason to.

    I see them as in the same vein as
    weekday.mathematics and Sunday.mathematics.[1]
    A distinction without a difference.

    And I see that indifference as there _by design_
    It is why unwelcome mathematical results are accepted
    not because mathematicians are paragons of rectitude
    (no offense)
    but because there is no weasel.ability in mathematics.

    ⎛ Not everyone appreciates that lack of weasel.ability.
    ⎝ Those who don't self.select to be non.mathematicians.

    [1]

    ⎜ Most writers on the subject seem to agree that
    ⎜ the typical “working mathematician” is
    ⎜ a Platonist on weekdays and a formalist on Sundays.
    ⎜ That is, when he is doing mathematics,
    ⎜ he is convinced that
    ⎜ he is dealing with an objective reality
    ⎜ whose properties he is attempting to determine.
    ⎜ But then, when challenged to give
    ⎜ a philosophical account of this reality,
    ⎜ he finds it easiest to pretend that
    ⎜ he does not believe in it after all.

    https://core.ac.uk/download/pdf/82047627.pdf
    Some Proposals for Reviving the Philosophy of Mathematics
    REUBEN HERSH
    Department of Mathematics, University of New Mexico,
    Albuquerque, New Mexico 87131

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  • From Jim Burns@21:1/5 to Ross Finlayson on Fri Oct 11 14:47:20 2024
    On 10/11/2024 12:48 PM, Ross Finlayson wrote:
    On 10/10/2024 09:22 PM, Jim Burns wrote:

    What I mean by 'first transfinite ordinal' ω is that,
    of all ordinals which are not.finite,
    ω is the first such ordinal.

    What I mean by 'ordinal' is that
    each set of ordinals holds a minimum or is empty.

    What I mean by 'finite ordinal' γ is that
    it is first (ie, γ=0) or
    its predecessor.ordinal γ-1 exists and,
    for each non.0 prior ordinal β<γ
    its predecessor.ordinal β-1 exists.

    The mathematical objects of
    a strong mathematical platonist's mathematical universe
    are _discovered_, not _invented_.

    What effect does discovery.not.invention or
    invention.not.discovery have?

    I don't see any effect. What do you see?

    and for strong mathematical platonists
    these are the words we use for
    "infinite-dimensional vector spaces":
    infinite-dimensional vector spaces.

    ⎛ In mathematics and physics,
    ⎜ a vector space (also called a linear space) is
    ⎜ a set whose elements, often called vectors,
    ⎜ can be added together and multiplied ("scaled")
    ⎜ by numbers called scalars.
    ⎜ The operations of vector addition and scalar multiplication
    ⎝ must satisfy certain requirements, called vector axioms.

    ⎛ A subset of a vector space is a basis if
    ⎜ its elements are linearly independent and
    ⎜ span the vector space.
    ⎜ Every vector space has at least one basis,
    ⎜ or many in general.
    ⎜ Moreover,
    ⎜ all bases of a vector space have the same cardinality,
    ⎝ which is called the dimension of the vector space.

    https://en.wikipedia.org/wiki/Vector_space

    I am familiar with words like those for
    "infinite.dimensional vector spaces".
    They apparently aren't any different
    for Platonists or for formalists.

    and for strong mathematical platonists
    these are the words we use for
    "infinite-dimensional vector spaces":
    infinite-dimensional vector spaces.

    I don't see what point you are driving towards.

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  • From Richard Damon@21:1/5 to Jim Burns on Fri Oct 11 18:12:16 2024
    On 10/11/24 2:02 PM, Jim Burns wrote:
    On 10/11/2024 7:06 AM, Richard Damon wrote:
    On 10/10/24 11:19 PM, Chris M. Thomasson wrote:
    On 10/10/2024 6:38 PM, Richard Damon wrote:
    On 10/10/24 2:32 PM, WM wrote:

    If not all do exist,
    te doubling yields larger natnumbers,
    some of which have not existed before.
    But that means potential infinity.

    But there aren't any natural numbers that
    have not existed before. That is just showing that
    your "actual infinity" is a finite set that you grabbed on the way
    to infinity,
    but didn't get there yet.

    Actual infinity means
    you need to wait until you get there.
    The problem is
    finite creatures can't do that,
    so can't handle actual infinity.

    What do you mean?
    I can say all the natural numbers.
    That was pretty fast for all of them. ;^)

    Which names the set,
    but not actually list the contents of that set.

    Is a set
    without a finite list  but
    with a finite description
    potential or actual?

    Having not the INFINITE list, but just a finite description of the set
    is a potential infinity in the systems he is referring. Actual infinity
    has the completely enumerated list of all the infinite number of members
    of the set, which can not be changed. (and it turns out, can not be
    observed by a finite being)


    It looks to me as though the consensus is:
    we don't care what the answer is.

    It may not to you, but it does to him.

    The issue is that his concept of the complete list takes on the
    properties of a finite list, even though it IS an infinite list, and
    thus not "perceivable" to a finite being.


    We have a description of ℕ and its elements,
    free of mentions of 'potential' and 'actual'.
    From its description,
    we can reason about it and its elements.

    Which puts it in his classification as just a potential infinity.

    "Potential ℕ" vs. "actual ℕ" leaves unchanged
    which claims we reason to.

    No, the claim is that if we have at hand the complete list of all the
    elements, we don't need to "reason" about things, but can just observe
    the facts about them.

    The problem is that we can't actually "observe" the things, as actual
    infinity turns out to not be observable by finite beings, so he ends up
    looking at showdows of it and thinks he is looking at the real thing.

    Those shaddow confuse the infinite for bigger than we can imagine, and
    then we imagine we got there and see the end that wasn't really there.


    I see them as in the same vein as
    weekday.mathematics and Sunday.mathematics.[1]
    A distinction without a difference.

    At least with the casual mathematician (whch I will admit being one) is
    that they tend to pick up the tools that are normally in use, and may us
    them a bit ineptly, but will generally listen to correction. Sometimes
    they may pick up an arcane tool, and the "pros" may not remember that
    being used that way, and there might be a bit more work to figure out
    what is going on.

    Wackos (like WM) seem to pick up some of these tools (or tools discarded
    for not being useful) and not really understanding how they were
    supposed to work just wail away, and refuse to accept the corrections
    showing the errors found in history, as they think they no better.


    And I see that indifference as there _by design_
    It is why unwelcome mathematical results are accepted
    not because mathematicians are paragons of rectitude
    (no offense)
    but because there is no weasel.ability in mathematics.

    ⎛ Not everyone appreciates that lack of weasel.ability.
    ⎝ Those who don't self.select to be non.mathematicians.

    [1]

    ⎜ Most writers on the subject seem to agree that
    ⎜ the typical “working mathematician” is
    ⎜ a Platonist on weekdays and a formalist on Sundays.
    ⎜ That is, when he is doing mathematics,
    ⎜ he is convinced that
    ⎜ he is dealing with an objective reality
    ⎜ whose properties he is attempting to determine.
    ⎜ But then, when challenged to give
    ⎜ a philosophical account of this reality,
    ⎜ he finds it easiest to pretend that
    ⎜ he does not believe in it after all.

    https://core.ac.uk/download/pdf/82047627.pdf
    Some Proposals for Reviving the Philosophy of Mathematics
    REUBEN HERSH
    Department of Mathematics, University of New Mexico,
    Albuquerque, New Mexico 87131



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  • From Richard Damon@21:1/5 to Chris M. Thomasson on Fri Oct 11 18:15:52 2024
    On 10/11/24 3:29 PM, Chris M. Thomasson wrote:
    On 10/11/2024 4:06 AM, Richard Damon wrote:
    On 10/10/24 11:19 PM, Chris M. Thomasson wrote:
    On 10/10/2024 6:38 PM, Richard Damon wrote:
    On 10/10/24 2:32 PM, WM wrote:
    On 09.10.2024 21:13, Alan Mackenzie wrote:
    WM <invalid@no.org> wrote:
    Am 09.10.2024 um 18:12 schrieb Alan Mackenzie:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    You've misunderstood the nature of N.  The set is not
    {1, 2, 3, ..., ω}, it is {1, 2, 3, ...}.

    I use ℕ U {ω} for clarity.

    You would do better not to do so.  It gives wrong results.

    It gives unfamiliar results because you have no clear picture of
    actual infinity. If all natnumbers are there and if 2n is greater
    than n, then the doubled numbers do not fit into ℕ. But note, that >>>>> is only true if all natnumbers do exist.

    No, *YOU* don't understand what actual infinity is like as you
    picture it just like the finite, but bigger.


    If not all do exist, te doubling yields larger natnumbers, some of
    which have not existed before. But that means potential infinity.

    But there aren't any natural numbers that have not existed before.
    That is just showing that your "actual infinity" is a finite set
    that you grabbed on the way to infinity, but didn't get there yet.



    Actual infinity means you need to wait until you get there. The
    problem is finite creatures can't do that, so can't handle actual
    infinity.
    [...]

    What do you mean? I can say all the natural numbers. That was pretty
    fast for all of them. ;^)


    Which names the set, but not actually list the contents of that set.

    Who's counting anyway? lol. Infinite is infinite and finite is, well, finite... ;^) Just because we are finite beings does not negate the
    infinite, right?

    Right, but it means we lack some of the ability to actually PERCEIVE the reality of the infinite.

    When one tries to do that, it is too easy to presume characteristics of
    the infinite are just like the finite, when they aren't (like having
    "ends").

    When we start by studing the processes that generate the infinite, we
    can build an understand of it, which while we can not directly perceive
    the infinite, we can understand it.

    When WM decides to ignore the logic, but just try squinting real hard to directly make out the infinite, he sees things that aren't, and thhus
    comes to wrong conclusions.

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  • From WM@21:1/5 to joes on Sat Oct 12 15:35:21 2024
    On 10.10.2024 21:49, joes wrote:
    Am Wed, 09 Oct 2024 15:49:27 +0200 schrieb WM:
    As long as
    all endsegments are infinite, the loss has spared an infinite set common
    to all.
    You really mean as long as only finitely many numbers are missing.

    Yes. It is impossible that infinitely many numbers are missing and
    infinitely many are remaining.

    If you can't understand try to find a counterexample.
    Or use a finite example.
    Notice anything? You should write it like this:
    {1, 2, 3, ...}
    {2, 3, 4, ...}
    {3, 4, 5, ...}
    ...

    That does not change that it is impossible that infinitely many numbers
    are missing and infinitely many are remaining.

    Regards, WM

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  • From WM@21:1/5 to joes on Sat Oct 12 15:32:25 2024
    On 10.10.2024 21:48, joes wrote:
    Am Wed, 09 Oct 2024 18:47:39 +0200 schrieb WM:

    Numbers multiplied by 2 do not remain unchanged. That is not intuition
    but mathematics.
    They do, however, remain natural.

    They do not remain the same set as before. They cover more of the real
    line. If they all are natnumbers, then there are more than at the
    outset. That means potential infinity. If there are not more natumbers
    than at the outset, then infinite numbers have been created. There is no
    way to avoid one of these results.

    Regards, WM

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  • From Richard Damon@21:1/5 to All on Sat Oct 12 10:55:46 2024
    On 10/12/24 9:32 AM, WM wrote:
    On 10.10.2024 21:48, joes wrote:
    Am Wed, 09 Oct 2024 18:47:39 +0200 schrieb WM:

    Numbers multiplied by 2 do not remain unchanged. That is not intuition
    but mathematics.
    They do, however, remain natural.

    They do not remain the same set as before. They cover more of the real
    line. If they all are natnumbers, then there are more than at the
    outset. That means potential infinity. If there are not more natumbers
    than at the outset, then infinite numbers have been created. There is no
    way to avoid one of these results.

    Regards, WM


    No, they do not cover "more" of the line, as they still cover exactly
    Aleph_0 point within the range of the finite numbers below omega.

    The problem is you are applying properties of FINITE sets to an infinite
    set, which just doen't apply. The problem is that you think of
    "infinite" as just some really big and huge number, but it is something different.

    The infinite set, when completed, doesn't HAVE an "end" at the top, but
    goes on and on and on without end. We can thing of that going on
    incrementally in a way we can understand, giving us that "potential
    infinity" which you talk about (but that potential, when fully developed
    is infinite), or we can try to imagine the process being completed, but
    then it is something we have NEVER actually experienced, and has
    properties we don't understand, so we can't actually "perceive" what it is.

    YOU imagine an end to it, which it doesn't have, infinite, by its
    definition, has no end, so you make an error by assuming it.

    The problem is you are just stuck in your finite thinking, and can't
    understand the basics of what infinity is like. Others, because they are willing to learn by looking at the potential, understand a bit about the infinite, even if we can not fully understand it (since it is bigger
    than what we can know).

    Sorry, you are just showing the complete finite boundness of your logic.

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  • From joes@21:1/5 to All on Sat Oct 12 17:10:41 2024
    Am Sat, 12 Oct 2024 15:32:25 +0200 schrieb WM:
    On 10.10.2024 21:48, joes wrote:
    Am Wed, 09 Oct 2024 18:47:39 +0200 schrieb WM:

    Numbers multiplied by 2 do not remain unchanged. That is not intuition
    but mathematics.
    They do, however, remain natural.
    They do not remain the same set as before. They cover more of the real
    line. If they all are natnumbers, then there are more than at the
    outset. That means potential infinity. If there are not more natumbers
    than at the outset, then infinite numbers have been created. There is no
    way to avoid one of these results.
    Of course multiplying a (finite) number by 2 changes the value.
    If anything, the even numbers cover less, being a subset of the naturals.
    If doubling a natural yielded omega, there would need to be an n = w/2.
    That is not defined, nor finite.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From WM@21:1/5 to joes on Sat Oct 12 18:51:10 2024
    On 10.10.2024 21:51, joes wrote:
    Am Wed, 09 Oct 2024 15:24:21 +0200 schrieb WM:
    On 09.10.2024 14:38, joes wrote:
    Am Wed, 09 Oct 2024 10:11:20 +0200 schrieb WM:

    An end segment E is infinite because each natural number has a
    successor,
    so no element of E is max.E so not all nonempty subsets are two.ended >>>>> so E is not finite.
    Therefore every infinite endsegment has infinitely many elements with
    each predecessor in common. This is valid for all infinite
    endsegments.
    With each, but not with all at once (cf. quantifier shift).
    With all infinite endsegments at once! Inclusion monotony. If you can't
    understand try to find a counterexample.

    Fail.

    There are no other end segments, none are finite.
    They all have an infinite intersection.
    Intersection with what?
    Only the intersection of finitely many segments is infinite.

    Of course. If infinitely many numbers are indices, then infinitely many
    cannot be contents.

    because 'infinite' DOES NOT mean 'very large'.
    Theorem: If every endsegment has infinitely many numbers, then
    infinitely many numbers are in all endsegments.
    Invalid quantifier shift.
    Valid quantifier shift.
    You haven't proved your logical rule in general. In particular, you can't
    use it here to argue it is valid, that would be circular.

    The proof of the cake lies in the eating.
    I do not intend to prove quantifier shift in general. I prove: If every endsegment is infinite, then infinitely many numbers are in all
    endsegments of this subset.

    Can you explain what a quantifier shift is?

    The above arguing. If every endsegment has an infinite subset, then
    there exists one and the same infinite subset of every endsegment.
    Proof: Inclusion monotony.

    Regards, WM

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  • From WM@21:1/5 to Jim Burns on Sat Oct 12 20:06:12 2024
    On 10.10.2024 22:47, Jim Burns wrote:
    On 10/9/2024 11:39 AM, WM wrote:
    On 09.10.2024 17:11, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    No.
    When we *in actual infinity*
    multiply all |ℕ|natural numbers by 2,
    then we keep |ℕ| numbers
    but only half of them are smaller than ω,
    i.e., are natural numbers.
    The other half is larger than ω.

    You (WM) are treating ω as though it is (our) finite.

    No, I am treating the natnumbers as though all could be treated and ω as though it could be doubled.

    {1, 2, 3, ..., ω}*2 = {2, 4, 6, ..., ω*2} .

    Each γ≠0 preceding ω is (our) finite.

    There are two alternatives: Either doubling creates natnumbers, then
    they are not among those doubled, then we have not doubles all. Or we
    have doubled all but then larger numbers have been created.

    β < ω  ∧  γ < ω  ⇒  β+γ < ω

    ⎛ Assume a counterexample.
    ⎜ Assume
    ⎜ β < ω  ∧  γ < ω  ∧  β+γ ≥ ω

    Dark numbers have no discernible individuality.
    β < ω  ∧  γ < ω  ⇒  β×γ < ω

    ⎛ Assume a counterexample.
    ⎜ Assume
    ⎜ β < ω  ∧  γ < ω  ∧  β×γ ≥ ω

    Dark numbers have no discernible individuality.

    Regards, WM

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  • From WM@21:1/5 to joes on Sat Oct 12 19:49:23 2024
    On 10.10.2024 21:54, joes wrote:
    Am Thu, 10 Oct 2024 20:53:07 +0200 schrieb WM:
    On 10.10.2024 20:45, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    If all natnumbers are there and if 2n is greater than n, then the
    doubled numbers do not fit into ℕ.
    For any finite n greater than zero, 2n is greater than n. The same
    does not hold for infinite n.
    There are no infinite n = natural numbers.
    Exactly! There are furthermore no infinite doubles of naturals (2n).

    But the doubles are larger. Hence after doubling the set has a smaller
    density and therefore a larger extension on the real line. Hence not all natural numbers have been doubled.

    Numbers multiplied by 2 do not remain unchanged.
    Either doubling
    creates new natural numbers. Then not all have been doubled. Or all
    have been doubled, then some products fall outside of ℕ.
    No. Not even close.
    Deplorable. But note that all natural numbers are finite and follow this
    law: When doubled then 2n > n. If a set of natural numbers is doubled,
    then the results cover a larger set than before..
    Additionally: if n is finite, so is 2n. It cannot go beyond w.

    Then there is no complete set. The doubling can be repeated and
    repeated. Always new numbers are created. Potential infinity.

    Regards, WM


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  • From WM@21:1/5 to joes on Sat Oct 12 20:13:11 2024
    On 11.10.2024 01:01, joes wrote:
    Am Thu, 10 Oct 2024 19:56:26 +0200 schrieb WM:
    On 09.10.2024 19:08, joes wrote:
    Am Wed, 09 Oct 2024 14:48:17 +0200 schrieb WM:

    How do you compare finite sets?
    By their numbers of elements.
    How is that defined?

    How far can you count? Already until one hundred?

    Satz: Jede Menge, die mindestens drei Elemente enthält (nennen wir diese
    Mengen DE), enthält drei Elemente gemeinsam mit allen DE-Mengen. Es gibt
    also drei Elemente, die in allen DE-Mengen enthalten sind. Das ist ein
    erlaubter Quantorentausch.
    A quantifier shift is never valid.

    I am not interested in what you find valid. I am satisfied if my
    reasoning cannot be contradicted by counterexample.

    Regards, WM


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  • From WM@21:1/5 to Richard Damon on Sat Oct 12 20:25:46 2024
    On 11.10.2024 03:38, Richard Damon wrote:
    On 10/10/24 2:32 PM, WM wrote:

    If not all do exist, the doubling yields larger natnumbers, some of
    which have not existed before. But that means potential infinity.

    But there aren't any natural numbers that have not existed before.

    Then doubling has no effect on some finite numbers?

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Sat Oct 12 20:19:26 2024
    On 11.10.2024 03:38, Richard Damon wrote:

    The SIZE of the set of natural numbers is infinite, and thus obeys the
    laws of infinite numbers. An infinite number, which has a finite number, added to, multiplied by, or used as a power, is still that same infinite number. It may seem impossible, but that is the nature of infinite numbers.

    No natural number is infinite. They all obey the law of finite numbers.
    That includes the law that 2n > n.

    Regards, WM

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  • From Tom Bola@21:1/5 to All on Sat Oct 12 20:26:34 2024
    Am 12.10.2024 19:49:23 WM drivels:
    On 10.10.2024 21:54, joes wrote:
    Am Thu, 10 Oct 2024 20:53:07 +0200 schrieb WM:
    On 10.10.2024 20:45, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    If all natnumbers are there and if 2n is greater than n, then the
    doubled numbers do not fit into ℕ.
    For any finite n greater than zero, 2n is greater than n. The same
    does not hold for infinite n.
    There are no infinite n = natural numbers.
    Exactly! There are furthermore no infinite doubles of naturals (2n).

    But the doubles are larger. Hence after doubling the set has a smaller density

    Not with the (always) Dedekind-infinite sets of *our* math on planet earth because these sets (can) contain the required (proper) infinite subsets.

    You never are reasoning within the axioms and the rules of *our* math.

    What you are using is *your* total idiotic and total private bullshit.

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  • From WM@21:1/5 to Jim Burns on Sat Oct 12 20:39:11 2024
    On 11.10.2024 20:02, Jim Burns wrote:

    "Potential ℕ" vs. "actual ℕ" leaves unchanged
    which claims we reason to.

    Potential infinity: All natural numbers when double yield natural
    numbers but larger numbers are among the result.
    In actual infinity no new naturals can be created but since doubling
    doubles the value of each number, numbers of the second number class are created.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Sat Oct 12 20:50:34 2024
    On 12.10.2024 16:55, Richard Damon wrote:
    On 10/12/24 9:32 AM, WM wrote:
    On 10.10.2024 21:48, joes wrote:
    Am Wed, 09 Oct 2024 18:47:39 +0200 schrieb WM:

    Numbers multiplied by 2 do not remain unchanged. That is not intuition >>>> but mathematics.
    They do, however, remain natural.

    They do not remain the same set as before. They cover more of the real
    line. If they all are natnumbers, then there are more than at the
    outset. That means potential infinity. If there are not more natumbers
    than at the outset, then infinite numbers have been created. There is
    no way to avoid one of these results.

    No, they do not cover "more" of the line, as they still cover exactly
    Aleph_0 point within the range of the finite numbers below omega.

    Wrong.

    The problem is you are applying properties of FINITE sets

    Wrong, I use properties of finite numbers.

    Regards, WM

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  • From WM@21:1/5 to joes on Sat Oct 12 20:59:32 2024
    On 12.10.2024 19:10, joes wrote:
    Am Sat, 12 Oct 2024 15:32:25 +0200 schrieb WM:
    On 10.10.2024 21:48, joes wrote:
    Am Wed, 09 Oct 2024 18:47:39 +0200 schrieb WM:

    Numbers multiplied by 2 do not remain unchanged. That is not intuition >>>> but mathematics.
    They do, however, remain natural.
    They do not remain the same set as before. They cover more of the real
    line. If they all are natnumbers, then there are more than at the
    outset. That means potential infinity. If there are not more natumbers
    than at the outset, then infinite numbers have been created. There is no
    way to avoid one of these results.
    Of course multiplying a (finite) number by 2 changes the value.
    If anything, the even numbers cover less, being a subset of the naturals.

    2n > n. Every doubled number has twice the distance from zero.

    If doubling a natural yielded omega, there would need to be an n = w/2.
    That is not defined, nor finite.

    If doubling does not yield an infinite number, then not all natnumbers
    had been doubled.

    Regards, WM


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  • From WM@21:1/5 to Tom Bola on Sat Oct 12 20:55:44 2024
    On 12.10.2024 20:26, Tom Bola wrote:

    But the doubles are larger. Hence after doubling the set has a smaller
    density

    Not with the (always) Dedekind-infinite sets

    2n > n. That holds for all finite numbers. It halves the density.

    Regards, WM

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  • From joes@21:1/5 to All on Sat Oct 12 19:23:19 2024
    Am Sat, 12 Oct 2024 20:55:44 +0200 schrieb WM:
    On 12.10.2024 20:26, Tom Bola wrote:

    But the doubles are larger. Hence after doubling the set has a smaller
    density
    Not with the (always) Dedekind-infinite sets
    2n > n. That holds for all finite numbers. It halves the density.
    How do you define that?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to All on Sat Oct 12 19:19:30 2024
    Am Sat, 12 Oct 2024 20:13:11 +0200 schrieb WM:
    On 11.10.2024 01:01, joes wrote:
    Am Thu, 10 Oct 2024 19:56:26 +0200 schrieb WM:
    On 09.10.2024 19:08, joes wrote:
    Am Wed, 09 Oct 2024 14:48:17 +0200 schrieb WM:

    How do you compare finite sets?
    By their numbers of elements.
    How is that defined?
    How far can you count? Already until one hundred?
    What is counting? Seriously.

    Satz: Jede Menge, die mindestens drei Elemente enthält (nennen wir
    diese Mengen DE), enthält drei Elemente gemeinsam mit allen DE-Mengen.
    Es gibt also drei Elemente, die in allen DE-Mengen enthalten sind. Das
    ist ein erlaubter Quantorentausch.
    A quantifier shift is never valid.
    I am not interested in what you find valid. I am satisfied if my
    reasoning cannot be contradicted by counterexample.
    But that's too easy. I have been doing the same. Why are you posting?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From WM@21:1/5 to joes on Sat Oct 12 21:33:13 2024
    On 12.10.2024 21:23, joes wrote:
    Am Sat, 12 Oct 2024 20:55:44 +0200 schrieb WM:

    2n > n. That holds for all finite numbers. It halves the density.
    How do you define that?

    Same number of numbers occupy twice the space on the real line.
    Alternatively: Half number of numbers occupy same space.

    Regards, WM

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  • From WM@21:1/5 to joes on Sat Oct 12 21:31:23 2024
    On 12.10.2024 21:19, joes wrote:
    Am Sat, 12 Oct 2024 20:13:11 +0200 schrieb WM:

    What is counting? Seriously.

    Counting is multiplying by (n+1)/n-

    Satz: Jede Menge, die mindestens drei Elemente enthält (nennen wir
    diese Mengen DE), enthält drei Elemente gemeinsam mit allen DE-Mengen. >>>> Es gibt also drei Elemente, die in allen DE-Mengen enthalten sind. Das >>>> ist ein erlaubter Quantorentausch.
    A quantifier shift is never valid.
    I am not interested in what you find valid. I am satisfied if my
    reasoning cannot be contradicted by counterexample.
    But that's too easy.

    No, it is what counts.

    Why are you posting?

    I obtain lots of good ideas from these discussions. Example: Who has
    ever thought about doubling all natural numbers?

    Regards, WM

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  • From Tom Bola@21:1/5 to All on Sat Oct 12 22:29:21 2024
    Am 12.10.2024 20:55:44 WM drivels:

    On 12.10.2024 20:26, Tom Bola wrote:

    But the doubles are larger. Hence after doubling the set has a smaller
    density

    Not with the (always) Dedekind-infinite sets

    2n > n. That holds for all finite numbers. It halves the density.

    Nope, you're wrong, of course (as usually).

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  • From Richard Damon@21:1/5 to All on Sat Oct 12 16:47:38 2024
    On 10/12/24 1:49 PM, WM wrote:
    On 10.10.2024 21:54, joes wrote:
    Am Thu, 10 Oct 2024 20:53:07 +0200 schrieb WM:
    On 10.10.2024 20:45, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    If all natnumbers are there and if 2n is greater than n, then the
    doubled numbers do not fit into ℕ.
    For any finite n greater than zero, 2n is greater than n.  The same
    does not hold for infinite n.
    There are no infinite n = natural numbers.
    Exactly! There are furthermore no infinite doubles of naturals (2n).

    But the doubles are larger. Hence after doubling the set has a smaller density and therefore a larger extension on the real line. Hence not all natural numbers have been doubled.

    The doubles are larger than the element they replace, but that value was
    always in the set to begin with, so it never creates a "new" term.


    Numbers multiplied by 2 do not remain unchanged.
    Either doubling
    creates new natural numbers. Then not all have been doubled. Or all
    have been doubled, then some products fall outside of ℕ.
    No.  Not even close.
    Deplorable. But note that all natural numbers are finite and follow this >>> law: When doubled then 2n > n. If a set of natural numbers is doubled,
    then the results cover a larger set than before..
    Additionally: if n is finite, so is 2n. It cannot go beyond w.

    Then there is no complete set. The doubling can be repeated and
    repeated. Always new numbers are created. Potential infinity.

    You got it! The complete set of infinity is not available to finite
    beings to directly observe and handle, because it is just too big for
    use to work on.

    That was the conclusion that Aristotle came up millennia ago.




    Regards, WM



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  • From joes@21:1/5 to All on Sat Oct 12 22:46:26 2024
    Am Sat, 12 Oct 2024 18:51:10 +0200 schrieb WM:
    On 10.10.2024 21:51, joes wrote:
    Am Wed, 09 Oct 2024 15:24:21 +0200 schrieb WM:
    On 09.10.2024 14:38, joes wrote:
    Am Wed, 09 Oct 2024 10:11:20 +0200 schrieb WM:

    There are no other end segments, none are finite.
    They all have an infinite intersection.
    Intersection with what?
    Only the intersection of finitely many segments is infinite.
    Of course. If infinitely many numbers are indices, then infinitely many cannot be contents.
    What? There's a segment for every number.

    because 'infinite' DOES NOT mean 'very large'.
    Theorem: If every endsegment has infinitely many numbers, then
    infinitely many numbers are in all endsegments.
    Invalid quantifier shift.
    Valid quantifier shift.
    You haven't proved your logical rule in general. In particular, you
    can't use it here to argue it is valid, that would be circular.
    The proof of the cake lies in the eating.
    I do not intend to prove quantifier shift in general. I prove: If every endsegment is infinite, then infinitely many numbers are in all
    endsegments of this subset.
    Then you need to explain why the shifted proposition should be true.

    Can you explain what a quantifier shift is?
    The above arguing. If every endsegment has an infinite subset, then
    there exists one and the same infinite subset of every endsegment.
    Proof: Inclusion monotony.
    Not valid for infinite sets.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to All on Sat Oct 12 22:44:34 2024
    Am Thu, 10 Oct 2024 20:12:56 +0200 schrieb WM:
    On 09.10.2024 19:40, joes wrote:
    Am Wed, 09 Oct 2024 17:39:36 +0200 schrieb WM:
    But those endsegments which have lost only finitely many numbers and
    yet contain infinitely many, have an infinite intersection.
    Not what we are discussing.
    It is claimed that all endsegments are infinite, hence have lost only finitely many numbers as indices, but have an empty intersection.
    Yes, and what do you claim?

    So, for an infinite number of infinite sets infinitely many numbers
    have been "lost", leaving nothing.
    True. Therefore not all endsegments are infinity.
    If there were a largest n, all previous segments were finite.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to All on Sat Oct 12 22:50:44 2024
    Am Sat, 12 Oct 2024 21:33:13 +0200 schrieb WM:
    On 12.10.2024 21:23, joes wrote:
    Am Sat, 12 Oct 2024 20:55:44 +0200 schrieb WM:

    2n > n. That holds for all finite numbers. It halves the density.
    How do you define that?
    Same number of numbers occupy twice the space on the real line. Alternatively: Half number of numbers occupy same space.
    How do you define "space"?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From Jim Burns@21:1/5 to Ross Finlayson on Sat Oct 12 20:02:28 2024
    On 10/11/2024 4:48 PM, Ross Finlayson wrote:
    On 10/11/2024 11:02 AM, Jim Burns wrote:

    ⎜ the typical “working mathematician” is
    ⎜ a Platonist on weekdays and a formalist on Sundays.

    I'm familiar with that you tend to repost that,
    yet platonism and formalism don't necessarily
    contradict nor preclude each other, with regards
    to neither necessarily being fictionalism.

    About what mathematics *IS*
    there is disagreement between mathematicians, and
    sometimes even between the same mathematician
    on different days.

    About what mathematics *SAYS*
    there isn't _that kind_ of disagreement.

    ⎛ When I gather my Authority about me
    ⎜ in order to Proclaim a Truth,
    ⎜ it's nearly always what mathematics *SAYS*
    ⎜ The times I Proclaim what mathematics *IS*
    ⎝ I have goofed and mis.stated opinion as knowledge.

    Mathematics is not "pretend",

    On the other hand, we all know that
    you will never dig up a square root in your garden.

    Yes,
    mathematics follows rules.
    However, lots of "pretend" follows rules, too.
    Consider vampires, garlic, etc.

    Yes,
    when mathematics answers a question,
    we are well.advised to pay attention.
    However, the same is said for the best of "pretend":
    Shakespeare, Aesop, and their ilk.

    If mathematics is not "pretend",
    please tell me the difference between
    mathematics and "pretend".

    and it's in accords to
    some ultimate ontological commitment
    to the _truth_ of the mathematical _facts_,
    not "make-believe".

    "Aristotle

    "Zeno

    "Cantor

    "Russell

    Frege

    Anaximander

    Goedel

    Cohen

    I couldn't find where you or these others say
    what it is which
    you or they _mean_ by "make-believe".

    some ultimate ontological commitment
    to the _truth_ of the mathematical _facts_,

    ⎛ In professional wrestling, kayfabe (/ˈkeɪfeɪb/) is
    ⎜ the portrayal of staged events within the industry
    ⎜ as "real" or "true", specifically the portrayal of
    ⎜ competition, rivalries, and relationships between participants
    ⎜ as being genuine and not staged.
    ⎜ The term kayfabe has evolved to also become
    ⎜ a code word of sorts for maintaining this "reality"
    ⎝ within the direct or indirect presence of the general public.
    [1]

    Compare and contrast: mathematical fact, kayfabe.

    [1]
    https://en.wikipedia.org/wiki/Kayfabe

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  • From Moebius@21:1/5 to All on Sun Oct 13 10:34:26 2024
    Am 13.10.2024 um 00:44 schrieb joes:
    Am Thu, 10 Oct 2024 20:12:56 +0200 schrieb WM:

    It is claimed that all endsegments are infinite [...]
    [and that they] have an empty intersection.

    Yes, and what do you claim?

    [...] not all endsegments are infinit[e].
    Well, they are.

    Satz: ALLE Endsegmente sind unendlich.

    Beweis: Ein /Endsegment/ ist definiert als das Komplement eines
    endlichen Anfangsabschnitts (der natürlichen Zahlen) bezüglich IN.
    D. h. E ist ein Endsegment genau dann, wenn es einen endlichen
    Anfangsabschnitt A gibt mit E = IN \ A. Daraus ergibt sich sofort, dass
    ALLE Endsegmente unendlich sind, weil IN unendlich ist und jeder
    endliche (sic!) Anfangsabschnitt endlich ist.

    Moreover, Satz: Der Schnitt über ALLE Endsegmente ist leer.

    Beweis: Angenommen es ist nicht so. Dann müsste es eine natürliche Zahl geben, die in allen Endsegmenten enthalten ist. Sei WM so eine Zahl. WM
    ist aber nicht im Endsegment IN \ {n e IN : n <= WM} enthalten. Widerspruch!

    So "what is claimed" is true.

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  • From Moebius@21:1/5 to All on Sun Oct 13 10:49:18 2024
    Am 13.10.2024 um 00:46 schrieb joes:
    Am Sat, 12 Oct 2024 18:51:10 +0200 schrieb WM:
    On 10.10.2024 21:51, joes wrote:
    Am Wed, 09 Oct 2024 15:24:21 +0200 schrieb WM:
    On 09.10.2024 14:38, joes wrote:
    Am Wed, 09 Oct 2024 10:11:20 +0200 schrieb WM:

    Theorem: If every endsegment has infinitely many numbers, then
    infinitely many numbers are in all endsegments.

    Not a theorem, WM nonsense.

    Using symbols:

    (AS e ENDSEG: E^oo n e IN: n e S) ->
    (E^oo n e IN: AS e ENDSEG: n e S)

    Invalid quantifier shift.

    Yes. @Mückenmann: See: https://en.wikipedia.org/wiki/Quantifier_shift

    Valid quantifier shift.

    lol. There is no such thing, Mückendepp!

    You haven't proved your logical rule in general. In particular, you
    can't use it here to argue it is valid, that would be circular.

    Indeed.

    Actually, this case is a counterexample concerning that "rule".

    (AS e ENDSEG: E^oo n e IN: n e S) is true (easy, by definition)

    but

    (E^oo n e IN: AS e ENDSEG: n e S),

    since

    (En e IN: AS e ENDSEG: n e S)

    already is false. [...]

    I do not intend to prove quantifier shift in general. I prove: If every
    endsegment is infinite, then infinitely many numbers are in all
    endsegments [...]

    It seems that Mückenheim does not know the difference between an
    unproven claim and a proof for this claim. :-)

    Then you need to explain why the shifted proposition should be true.

    Right.

    [...] If every endsegment has an infinite subset, then
    there exists one and the same infinite subset of every endsegment.

    Oh, certainly not.

    Actually, thats just a quantifier shift AGAIN. :-)

    Proof: Inclusion monotony.

    Oh, a single word/notion is a "proof" in Mückenheims world -
    fascinating! (Not!)

    Not valid for [...]

    Actually, just NONSENSE.

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  • From Moebius@21:1/5 to All on Sun Oct 13 10:52:25 2024
    Am 13.10.2024 um 00:46 schrieb joes:
    Am Sat, 12 Oct 2024 18:51:10 +0200 schrieb WM:
    On 10.10.2024 21:51, joes wrote:
    Am Wed, 09 Oct 2024 15:24:21 +0200 schrieb WM:
    On 09.10.2024 14:38, joes wrote:
    Am Wed, 09 Oct 2024 10:11:20 +0200 schrieb WM:

    Theorem: If every endsegment has infinitely many numbers, then
    infinitely many numbers are in all endsegments.

    Not a theorem, WM nonsense.

    Using symbols:

    (AS e ENDSEG: E^oo n e IN: n e S) ->
    (E^oo n e IN: AS e ENDSEG: n e S)

    Invalid quantifier shift.

    Yes. @Mückenmann: See: https://en.wikipedia.org/wiki/Quantifier_shift

    Valid quantifier shift.

    lol. There is no such thing, Mückendepp!

    You haven't proved your logical rule in general. In particular, you
    can't use it here to argue it is valid, that would be circular.

    Indeed.

    Actually, this case is a counterexample concerning that "rule".

    (AS e ENDSEG: E^oo n e IN: n e S) is true (easy, by definition)

    but

    (E^oo n e IN: AS e ENDSEG: n e S),

    since

    (En e IN: AS e ENDSEG: n e S)

    already is false. [...]

    I do not intend to prove quantifier shift in general. I prove: If every
    endsegment is infinite, then infinitely many numbers are in all
    endsegments [...]

    It seems that Mückenheim does not know the difference between an
    unproven claim and a proof for this claim. :-)

    Then you need to explain why the shifted proposition should be true.

    Right.

    [...] If every endsegment has an infinite subset, then
    there exists one and the same infinite subset of every endsegment.

    Oh, certainly not.

    Actually, that's just a quantifier shift AGAIN. :-)

    Proof: Inclusion monotony.

    Oh, a single word/notion is a "proof" in Mückenheims world -
    fascinating! (Not!)

    Not valid for [...]

    Actually, just NONSENSE.

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  • From Moebius@21:1/5 to All on Sun Oct 13 11:39:15 2024
    Am 12.10.2024 um 05:51 schrieb Chris M. Thomasson:
    On 10/11/2024 3:15 PM, Richard Damon wrote:

    Right, but it means we lack some of the ability to actually PERCEIVE
    the reality of the infinite.

    A truism. :-)

    Peter Suber:

    "Do We Experience Anything Infinite?

    So we agree with Descartes that we do possess a positive idea of
    infinity. If Descartes is correct in his second thesis that we could not
    have obtained the idea from our finite experience and creative
    resources, then we feel the pressure he felt to posit an infinite being.
    So let us face directly the question whether we experience anything
    infinite.

    The words "infinite" and "infinity" are often used loosely in street
    English to suggest that we do experience infinites. For example, we may
    say that a film is infinitely clever, a coral reef has an infinite
    variety of wildlife, a spouse has infinite patience, or that a vinyl
    upholstery cleaner has infinitely many applications. (That's why it's
    called a miracle product.) Before cameras were automated, they had a focal-length setting called "infinity", presumably for photographing the
    arrow Lucretius shot into the edge of space. In these cases we speak
    loosely, and "infinity" means very many or very large, perhaps
    indefinitely many or large.[Note 20] On a clear day the sky may seem
    infinitely deep, but it's really just a wild blue yonder —an
    indefinitely deep 'out there'.[Note 21]

    Do we ever experience something which is literally infinite? If time,
    space, or matter are infinitely divisible, then to experience a finite
    chunk of any one of them is to experience its infinity of parts. Having
    said this, I would like to put to one side the question whether time,
    space, or matter really are infinitely divisible. Not only is it very
    thorny, it is unnecessary to answer the question on the table. For even
    if time, space, and matter are infinitely divisible, we experience their infinite parts bundled into chunks most of whose parts are indiscernible
    to us. When a movie runs at 24 frames per second, it appears continuous,
    its separate frames indiscernible to us. We certainly experience 24
    chunked frames, but not the 24-ness, or even the finitude, of the
    chunking. Once the eye is fooled into seeing continuity, the number of
    frames per second could increase to a billion, or to an infinite number,
    and we would not notice the difference.[Note 22] This is the sense in
    which we could experience something infinite without experiencing its infinitude. Similarly, if time, space, and matter were continuous and infinitely divisible, then the spectacle of life would be like a movie
    run at an (uncountably) infinite number of frames per second; but while
    we would experience expanses, durations, and objects with infinitely
    many parts, but we would not experience the infinitude of those parts.

    As the movie shows, the same is true of finite divisibility. If my car
    has (say) 5,000 parts, I experience it as an object with many parts; but
    I don't experience the 5,000-ness of the parts."

    BUTE note this thought:

    "While we do not experience the infinitude of time, space, or matter,
    even if they are infinite in extent or divisibility, neither do we
    experience large finite magnitudes. I've seen estimates of the number of sub-atomic particles in the universe ranging from 10^65 to 10^85. But to
    be conservative, let's say that nothing in the universe, including the
    universe itself, has more than 10^100 parts. The name for 10^100, or 1
    followed by 100 zeroes, is a googol. So even if there are more than
    googol of ultimate particles, it's fair to say that no collection of
    physical objects that we have ever experienced —grains of sand on a
    beach, snowflakes in a storm, stars in the sky— has more than a googol
    of members.[Note 33] If true, then we did not obtain our idea of a
    googol from experience. But it does not follow that we must posit a very
    large finite being —Googolzilla— to be the source of our idea. We know exactly what a googol is as a concept, even if we have never experienced
    it manifest in a sensation or image. We can list the million natural
    numbers which are its closest neighbors, we can do arithmetic with it,
    and we know infallibly whether an arbitrary natural number is larger or
    smaller than it. If we may export the lesson of this to the infinite,
    then we may suggest that while we have no experience of the infinitude
    of anything, we have a perfectly good concept of infinity, and that the ultimate explanation of this fact lies not so much in anything special
    about infinity as in the distinction between concepts and images."

    That's interesting to me because it kind of reminds me of 2d vs 3d vs 4d observers. Us 3d beings can look down at a 2d beings world and see all
    of it. A 4d being can look at our 3d world and see all of it. Think of a
    4d being at a location in n-ary space that has a non-zero 4d component
    to its vectors. We would not be able to see it because is off axis in a higher dimension. However, it can see us, right through us, all the way down...

    Yeah, nice ideas.

    You certaily now "Flatland. A Romance of Many Dimensions" written in
    1884 by Edwin Abbott Abbott.

    See: https://en.wikipedia.org/wiki/Flatland

    When one tries to do that, it is too easy to presume characteristics
    of the infinite are just like the finite, when they aren't (like
    having "ends").

    Right. One has to be careful here. [...]

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  • From Jim Burns@21:1/5 to All on Sun Oct 13 11:34:44 2024
    On 10/12/2024 2:39 PM, WM wrote:
    On 11.10.2024 20:02, Jim Burns wrote:

    We have a description of ℕ and its elements,
    free of mentions of 'potential' and 'actual'.
    From its description,
    we can reason about it and its elements.
    "Potential ℕ" vs. "actual ℕ" leaves unchanged
    which claims we reason to.

    Potential infinity:
    All natural numbers when double yield
    natural numbers
    but larger numbers are among the result.

    Finites have larger finites.

    ⎛ Assume k is a finite ordinal.

    ⎜ For each ordinal j: 0 < j ≤ k
    ⎜ ordinal j-1 exists

    ⎜ For each ordinal j: 0 < j ≤ 2⋅k
    ⎜ ordinal j-1 exists

    ⎝ 2⋅k is a finite ordinal.

    In actual infinity
    no new naturals can be created

    Finites have larger finites.

    but since doubling
    doubles the value of each number,
    numbers of the second number class are created.

    ω is the first transfinite ordinal.

    ⎛ Assume k < ω

    ⎜⎛ k is a finite ordinal.
    ⎜⎜
    ⎜⎜ For each ordinal j: 0 < j ≤ k
    ⎜⎜ ordinal j-1 exists
    ⎜⎜
    ⎜⎜ For each ordinal j: 0 < j ≤ 2⋅k
    ⎜⎜ ordinal j-1 exists
    ⎜⎜
    ⎜⎝ 2⋅k is a finite ordinal.

    ⎝ 2⋅k < ω


    ⎜ Big fleas have little fleas,
    ⎜ Upon their backs to bite ’em,
    ⎜ And little fleas have lesser fleas,
    ⎜ And so, ad infinitum.

    -- Ogden Nash

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  • From Jim Burns@21:1/5 to All on Sun Oct 13 12:28:15 2024
    On 10/12/2024 2:06 PM, WM wrote:
    On 10.10.2024 22:47, Jim Burns wrote:
    On 10/9/2024 11:39 AM, WM wrote:

    {1, 2, 3, ..., ω}*2 = {2, 4, 6, ..., ω*2} .

    Each γ≠0 preceding ω is (our) finite.

    There are two alternatives:
    Either doubling creates natnumbers,
    then they are not among those doubled,
    then we have not doubles all.
    Or we have doubled all
    but then larger numbers have been created.

    There are two alternatives:
    Either 𝔊 exists such that 2⋅𝔊 < ω ≤ 2⋅(𝔊+1)
    Or {2,4,6,...} ᵉᵃᶜʰ< ω

    ⎛ Assume 2⋅𝔊 < ω ≤ 2⋅(𝔊+1)

    ⎜ 2⋅𝔊 < ω
    ⎜ For each j such that 0 < j ≤ 2⋅𝔊
    ⎜ j-1 exists.
    ⎜ 2⋅𝔊 = (2⋅𝔊+1)-1 exists
    ⎜ 2⋅𝔊+1 = (2⋅𝔊+2)-1 exists
    ⎜ 2⋅𝔊+2 = 2⋅(𝔊+1)
    ⎜ For each j such that 0 < j ≤ 2⋅(𝔊+1)
    ⎜ j-1 exists.
    ⎜ 2⋅(𝔊+1) < ω

    ⎜ However,
    ⎜ ω ≤ 2⋅(𝔊+1)
    ⎝ Contradiction.

    Therefore,
    {2,4,6,...} ᵉᵃᶜʰ< ω

    β < ω  ∧  γ < ω  ⇒  β+γ < ω

    ⎛ Assume a counterexample.
    ⎜ Assume
    ⎜ β < ω  ∧  γ < ω  ∧  β+γ ≥ ω

    Dark numbers have no discernible individuality.

    Natural numbers are countable.to from 0.

    ⎛ Each non.0 natural number k
    ⎜ has predecessor k-1 and
    ⎜ each prior non.0 natural number j < k
    ⎜ has predecessor j-1

    ⎜ Each set S of natural numbers
    ⎜ holds first.in.S or is empty.

    ⎜ Each natural number k
    ⎝ has successor k+1 = k∪{k}

    β < ω  ∧  γ < ω  ⇒  β×γ < ω

    ⎛ Assume a counterexample.
    ⎜ Assume
    ⎜ β < ω  ∧  γ < ω  ∧  β×γ ≥ ω

    Dark numbers have no discernible individuality.

    Natural numbers are countable.to from 0.

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  • From Jim Burns@21:1/5 to Chris M. Thomasson on Sun Oct 13 19:31:51 2024
    On 10/13/2024 6:12 PM, Chris M. Thomasson wrote:
    On 9/18/2024 7:31 AM, Jim Burns wrote:
    On 9/18/2024 8:39 AM, WM wrote:
    On 16.09.2024 19:30, Jim Burns wrote:
    On 9/15/2024 3:47 PM, WM wrote:

    I don't believe in gaps on the real line.

    There aren't gaps and there aren't next.numbers
    in numbers.situating.splits of rationals with
    countable.to.numerators.and.denominators

    So what is next instead?

    What is between one and the next?
    A gap.

    With regard to a very _strict) line of thinking
    (no mixing and matching), say 100% natural numbers...
    There is NO "gap" between, say:
    3 and 4

    That aligns with WM's take on 'gap', IIRC, as
    being a place something _should_ be, but _isn't_

    I would be comfortable with that take,
    if it were used consistently.
    It would just mean that _there are no gaps_
    A set is what it is, and
    it _should_ not.be anything it isn't.

    However (you knew 'however' was coming),
    WM somehow manages to have gaps.
    He keeps his dark thingummies in them.

    What does WM "really" mean by 'gap'?
    I strongly suspect that that is a question
    for which an answer does not exist.

    There is no gap in the real line.

    There is no next in the real line.
    If there were, there'd be a gap.




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  • From WM@21:1/5 to FromTheRafters on Mon Oct 14 12:20:10 2024
    On 12.10.2024 22:07, FromTheRafters wrote:
    WM used his keyboard to write :

    I use properties of finite numbers.

    Wrong, you disbelieve (when it suits you) the idea of cardinality.

    Cardinality is a property of potentially infinite sets.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Mon Oct 14 12:28:58 2024
    On 12.10.2024 22:47, Richard Damon wrote:
    On 10/12/24 2:55 PM, WM wrote:

    2n > n. That holds for all finite numbers. It halves the density.

    And half of infinity is infinity.

    The density of the natural umbers is 1 number per place, the density of
    the doubled numbers is 1/2 number per place.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Mon Oct 14 12:26:31 2024
    On 12.10.2024 22:47, Richard Damon wrote:
    On 10/12/24 1:49 PM, WM wrote:
    On 10.10.2024 21:54, joes wrote:
    Am Thu, 10 Oct 2024 20:53:07 +0200 schrieb WM:
    On 10.10.2024 20:45, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    If all natnumbers are there and if 2n is greater than n, then the
    doubled numbers do not fit into ℕ.
    For any finite n greater than zero, 2n is greater than n.  The same >>>>> does not hold for infinite n.
    There are no infinite n = natural numbers.
    Exactly! There are furthermore no infinite doubles of naturals (2n).

    But the doubles are larger. Hence after doubling the set has a smaller
    density and therefore a larger extension on the real line. Hence not
    all natural numbers have been doubled.

    The doubles are larger than the element they replace, but that value was always in the set to begin with, so it never creates a "new" term.

    Doubling creates terms which were not in the doubled set.

    law: When doubled then 2n > n. If a set of natural numbers is doubled, >>>> then the results cover a larger set than before..
    Additionally: if n is finite, so is 2n. It cannot go beyond w.

    Then there is no complete set. The doubling can be repeated and
    repeated. Always new numbers are created. Potential infinity.

    You got it! The complete set of infinity is not available to finite
    beings to directly observe and handle, because it is just too big for
    use to work on.

    Then Cantor's theory is wrong.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Mon Oct 14 12:31:58 2024
    On 12.10.2024 22:47, Richard Damon wrote:
    On 10/12/24 2:19 PM, WM wrote:
    On 11.10.2024 03:38, Richard Damon wrote:

    The SIZE of the set of natural numbers is infinite, and thus obeys
    the laws of infinite numbers. An infinite number, which has a finite
    number, added to, multiplied by, or used as a power, is still that
    same infinite number. It may seem impossible, but that is the nature
    of infinite numbers.

    No natural number is infinite. They all obey the law of finite
    numbers. That includes the law that 2n > n.

    Right, but for any number n that is a natural number 2n is also a
    natural number and in the set.

    But not in the set of numbers to be doubled. Half of the doubled numbers
    are not in that set.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Mon Oct 14 12:35:56 2024
    On 12.10.2024 22:47, Richard Damon wrote:
    On 10/12/24 2:39 PM, WM wrote:
    On 11.10.2024 20:02, Jim Burns wrote:

    "Potential ℕ" vs. "actual ℕ" leaves unchanged
    which claims we reason to.

    Potential infinity: All natural numbers when double yield natural
    numbers but larger numbers are among the result.
    In actual infinity no new naturals can be created but since doubling
    doubles the value of each number, numbers of the second number class
    are created.

    No, in actual infinity no new natural can be created,

    True.

    but every natural
    number can find the one that is twice itself in the set,

    False. n*2 > n for all numbers, even for infinite numbers.

    Regards, WM

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  • From WM@21:1/5 to joes on Mon Oct 14 13:35:41 2024
    On 13.10.2024 00:50, joes wrote:
    Am Sat, 12 Oct 2024 19:49:23 +0200 schrieb WM:
    On 10.10.2024 21:54, joes wrote:
    Am Thu, 10 Oct 2024 20:53:07 +0200 schrieb WM:
    On 10.10.2024 20:45, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    If all natnumbers are there and if 2n is greater than n, then the
    doubled numbers do not fit into ℕ.
    For any finite n greater than zero, 2n is greater than n. The same
    does not hold for infinite n.
    There are no infinite n = natural numbers.
    Exactly! There are furthermore no infinite doubles of naturals (2n).
    But the doubles are larger. Hence after doubling the set has a smaller
    density and therefore a larger extension on the real line. Hence not all
    natural numbers have been doubled.
    Taking "density" here to mean cardinality

    Cardinality is nonsense. Density is numbers per places for every finite set.

    The real line reaches until, but does not
    include omega, no matter your step size.

    Then double ℕ U {ω}.

    What value do you suppose n^2
    and n^n diverge to?

    More difficult to determine than 2n.

    Numbers multiplied by 2 do not remain unchanged.
    Either doubling creates new natural numbers. Then not all have been >>>>>> doubled. Or all have been doubled, then some products fall outside >>>>>> of ℕ.
    No. Not even close.
    Deplorable. But note that all natural numbers are finite and follow
    this law: When doubled then 2n > n. If a set of natural numbers is
    doubled, then the results cover a larger set than before..
    Additionally: if n is finite, so is 2n. It cannot go beyond w.
    Then there is no complete set. The doubling can be repeated and
    repeated. Always new numbers are created. Potential infinity.
    No! Actual infinity already includes all doubles of all numbers.

    Then you are outside of basic mathematics. The double number is larger
    than the doubled - in every case, even for infinite numbers.

    Regards, WM

    Regards, WM

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  • From joes@21:1/5 to All on Mon Oct 14 12:00:42 2024
    Am Mon, 14 Oct 2024 12:35:56 +0200 schrieb WM:
    On 12.10.2024 22:47, Richard Damon wrote:
    On 10/12/24 2:39 PM, WM wrote:
    On 11.10.2024 20:02, Jim Burns wrote:

    "Potential ℕ" vs. "actual ℕ" leaves unchanged which claims we reason >>>> to.
    Potential infinity: All natural numbers when double yield natural
    numbers but larger numbers are among the result.
    In actual infinity no new naturals can be created but since doubling
    doubles the value of each number, numbers of the second number class
    are created.
    No, in actual infinity no new natural can be created,
    True.

    but every natural number can find the one that is twice itself in the
    set,
    False. n*2 > n for all numbers, even for infinite numbers.
    Of course, and if the infinity is actual, they must already be in there.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From WM@21:1/5 to joes on Mon Oct 14 13:26:18 2024
    On 13.10.2024 00:46, joes wrote:
    Am Sat, 12 Oct 2024 18:51:10 +0200 schrieb WM:
    On 10.10.2024 21:51, joes wrote:
    Am Wed, 09 Oct 2024 15:24:21 +0200 schrieb WM:
    On 09.10.2024 14:38, joes wrote:
    Am Wed, 09 Oct 2024 10:11:20 +0200 schrieb WM:

    There are no other end segments, none are finite.
    They all have an infinite intersection.
    Intersection with what?
    Only the intersection of finitely many segments is infinite.
    Of course. If infinitely many numbers are indices, then infinitely many
    cannot be contents.
    What? There's a segment for every number.

    But not an infinite endsegment.

    I do not intend to prove quantifier shift in general. I prove: If every
    endsegment is infinite, then infinitely many numbers are in all
    endsegments of this subset.
    Then you need to explain why the shifted proposition should be true.

    It is true because there is no counterexample.

    Can you explain what a quantifier shift is?
    The above arguing. If every endsegment has an infinite subset, then
    there exists one and the same infinite subset of every endsegment.
    Proof: Inclusion monotony.
    Not valid for infinite sets.

    Why not?

    Regards, WM


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  • From joes@21:1/5 to All on Mon Oct 14 11:57:56 2024
    Am Mon, 14 Oct 2024 13:35:41 +0200 schrieb WM:
    On 13.10.2024 00:50, joes wrote:
    Am Sat, 12 Oct 2024 19:49:23 +0200 schrieb WM:
    On 10.10.2024 21:54, joes wrote:
    Am Thu, 10 Oct 2024 20:53:07 +0200 schrieb WM:
    On 10.10.2024 20:45, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    If all natnumbers are there and if 2n is greater than n, then the >>>>>>> doubled numbers do not fit into ℕ.
    For any finite n greater than zero, 2n is greater than n. The same >>>>>> does not hold for infinite n.
    There are no infinite n = natural numbers.
    Exactly! There are furthermore no infinite doubles of naturals (2n).
    But the doubles are larger. Hence after doubling the set has a smaller
    density and therefore a larger extension on the real line. Hence not
    all natural numbers have been doubled.
    Taking "density" here to mean cardinality
    Cardinality is nonsense. Density is numbers per places for every finite
    set.
    Any number div. by an inf. number ought to return density zero. OTOH,
    We have an inf. number per inf. interval, so that's even more undefined.

    The real line reaches until, but does not include omega, no matter your
    step size.
    Then double ℕ U {ω}.
    That is 2N u {2w} = G u {w}. If you insist on multiplying the other way
    around, that's still G u {w*2} = 2N u {w*2}. No trace of w, since there
    was nothing between N and w to be doubled. Why do you want to include
    the non-natural omega? It has nothing to do with N.

    What value do you suppose n^2 and n^n diverge to?
    More difficult to determine than 2n.
    w^2 and w^w, which both still have cardinality Aleph_0.

    Numbers multiplied by 2 do not remain unchanged.
    Either doubling creates new natural numbers. Then not all have
    been doubled. Or all have been doubled, then some products fall
    outside of ℕ.
    No. Not even close.
    Deplorable. But note that all natural numbers are finite and follow
    this law: When doubled then 2n > n. If a set of natural numbers is
    doubled, then the results cover a larger set than before..
    Additionally: if n is finite, so is 2n. It cannot go beyond w.
    Then there is no complete set. The doubling can be repeated and
    repeated. Always new numbers are created. Potential infinity.
    No! Actual infinity already includes all doubles of all numbers.
    Then you are outside of basic mathematics. The double number is larger
    than the doubled - in every case, even for infinite numbers.
    w*2 != 2w = w
    And we are only doubling natural (->finite) numbers.
    The set 2N=G of even numbers obviously also includes multiples of 4.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to All on Mon Oct 14 12:02:52 2024
    Am Mon, 14 Oct 2024 12:28:58 +0200 schrieb WM:
    On 12.10.2024 22:47, Richard Damon wrote:
    On 10/12/24 2:55 PM, WM wrote:

    2n > n. That holds for all finite numbers. It halves the density.
    And half of infinity is infinity.
    The density of the natural umbers is 1 number per place, the density of
    the doubled numbers is 1/2 number per place.
    And there being inf. many places, that makes both amounts infinite.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to All on Mon Oct 14 12:04:12 2024
    Am Mon, 14 Oct 2024 12:21:39 +0200 schrieb WM:
    On 12.10.2024 22:07, FromTheRafters wrote:
    WM used his keyboard to write :

    I use properties of finite numbers.
    Wrong, you disbelieve (when it suits you) the idea of cardinality.
    Cardinality is a property of potentially infinite sets.
    It is a property of all sets, be they finite or actually infinite.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to All on Mon Oct 14 12:17:25 2024
    Am Mon, 14 Oct 2024 12:31:58 +0200 schrieb WM:
    On 12.10.2024 22:47, Richard Damon wrote:
    On 10/12/24 2:19 PM, WM wrote:
    On 11.10.2024 03:38, Richard Damon wrote:

    The SIZE of the set of natural numbers is infinite, and thus obeys
    the laws of infinite numbers. An infinite number, which has a finite
    number, added to, multiplied by, or used as a power, is still that
    same infinite number. It may seem impossible, but that is the nature
    of infinite numbers.
    No natural number is infinite. They all obey the law of finite
    numbers. That includes the law that 2n > n.
    Right, but for any number n that is a natural number 2n is also a
    natural number and in the set.
    But not in the set of numbers to be doubled. Half of the doubled numbers
    are not in that set.
    The set N does not have an upper bound on even numbers, or at all.
    Every even number 2n has a natural half n, and is itself natural.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to All on Mon Oct 14 12:15:25 2024
    Am Mon, 14 Oct 2024 12:26:31 +0200 schrieb WM:
    On 12.10.2024 22:47, Richard Damon wrote:
    On 10/12/24 1:49 PM, WM wrote:
    On 10.10.2024 21:54, joes wrote:
    Am Thu, 10 Oct 2024 20:53:07 +0200 schrieb WM:
    On 10.10.2024 20:45, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    If all natnumbers are there and if 2n is greater than n, then the >>>>>>> doubled numbers do not fit into ℕ.
    For any finite n greater than zero, 2n is greater than n.  The same >>>>>> does not hold for infinite n.
    There are no infinite n = natural numbers.
    Exactly! There are furthermore no infinite doubles of naturals (2n).
    But the doubles are larger. Hence after doubling the set has a smaller
    density and therefore a larger extension on the real line. Hence not
    all natural numbers have been doubled.
    Doubling does not create a second infinity.
    The doubles are larger than the element they replace, but that value
    was always in the set to begin with, so it never creates a "new" term.
    Doubling creates terms which were not in the doubled set.
    Not with even numbers.

    When doubled then 2n > n. If a set of natural numbers is doubled,
    then the results cover a larger set than before..
    Additionally: if n is finite, so is 2n. It cannot go beyond w.
    Then there is no complete set. The doubling can be repeated and
    repeated. Always new numbers are created. Potential infinity.
    No, we are taking the complete, actually infinite set which reaches
    to "before" w.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From WM@21:1/5 to Moebius on Mon Oct 14 15:13:18 2024
    On 13.10.2024 10:34, Moebius wrote:
    Am 13.10.2024 um 00:44 schrieb joes:
    Am Thu, 10 Oct 2024 20:12:56 +0200 schrieb WM:

    It is claimed that all endsegments are infinite [...]
    [and that they] have an empty intersection.

    Yes, and what do you claim?

    [...] not all endsegments are infinit[e].
    Well, they are.

    Satz: ALLE Endsegmente sind unendlich.

    Beweis: Ein /Endsegment/ ist definiert als das Komplement eines
    endlichen Anfangsabschnitts (der natürlichen Zahlen) bezüglich IN.
    D. h. E ist ein Endsegment genau dann, wenn es einen endlichen Anfangsabschnitt A gibt mit E = IN \ A. Daraus ergibt sich sofort, dass
    ALLE Endsegmente unendlich sind, weil IN unendlich ist und jeder
    endliche (sic!) Anfangsabschnitt endlich ist.

    Die Anfangsabschitte können als die Zahlen dienen. Daraus ergibt sich
    sofort, dass zu allen Zahlen unendlich viele größere Zahlen existiere.

    Moreover, Satz: Der Schnitt über ALLE Endsegmente ist leer.

    Beweis: Angenommen es ist nicht so. Dann müsste es eine natürliche Zahl geben, die in allen Endsegmenten enthalten ist. Sei WM so eine Zahl. WM
    ist aber nicht im Endsegment IN \ {n e IN : n <= WM} enthalten.

    Aber unendlich viele Zahlen, die größer sind, sind in allen unendlichen Endsegmenten ethalten.

    Gruß, WM

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  • From WM@21:1/5 to joes on Mon Oct 14 15:34:59 2024
    On 14.10.2024 14:00, joes wrote:
    Am Mon, 14 Oct 2024 12:35:56 +0200 schrieb WM:

    False. n*2 > n for all numbers, even for infinite numbers.
    Of course, and if the infinity is actual, they must already be in there.

    They cannot be there because doubling all elements of a set of naturals
    doubles the space covered on the number line.

    Regards, WM

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  • From Moebius@21:1/5 to All on Mon Oct 14 15:24:17 2024
    Am Mon, 14 Oct 2024 12:21:39 +0200 schrieb WM:

    Cardinality is a property of potentially infinite sets.

    Holy shit! Did I already mention the fact that WM is insane?

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  • From WM@21:1/5 to joes on Mon Oct 14 15:37:13 2024
    On 14.10.2024 14:02, joes wrote:
    Am Mon, 14 Oct 2024 12:28:58 +0200 schrieb WM:
    On 12.10.2024 22:47, Richard Damon wrote:
    On 10/12/24 2:55 PM, WM wrote:

    2n > n. That holds for all finite numbers. It halves the density.
    And half of infinity is infinity.
    The density of the natural umbers is 1 number per place, the density of
    the doubled numbers is 1/2 number per place.
    And there being inf. many places, that makes both amounts infinite.

    Neither 1 nor 1/2 are infinite. These values are calculated by all
    finite subsets of the set and in the limit.

    Regards, WM

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  • From WM@21:1/5 to joes on Mon Oct 14 15:40:01 2024
    On 14.10.2024 14:15, joes wrote:

    No, we are taking the complete, actually infinite set which reaches
    to "before" w.

    and fills the space between 0 and ω evenly. Same happens with the
    doubled set between 0 and ω2.

    Regards, WM

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  • From Moebius@21:1/5 to All on Mon Oct 14 17:05:04 2024
    Am 13.10.2024 um 10:52 schrieb Moebius:

    WM faselt wieder einmal etwas daher:

    [...] If every endsegment has an infinite subset, then
    there exists one and the same infinite subset of every endsegment.

    Eine falsche Behauptung.

    1. Jedes Endsegment E besitzt eine unendliche Teilmenge, nämlich E selbst.

    Dass _jedes_ Endsegment unendlich ist, hat man Dir hier schon ein paar
    hundert Mal erklärt, Mückenheim.

    2. Es gibt keine unendliche Menge, die als Teilmenge in allen
    Endsegmenten enthalten ist. Ja es gibt nicht mal eine NICHTLEERE Menge,
    die als Teilmenge in allen Endsegmenten enthalten ist.

    Beweis: Sei WM eine Menge, die als Teilmenge in allen Endsegmenten
    enthalten ist. (Dass es solche Mengen gibt, ist klar, die leere Menge
    ist z. B. so eine Menge.) Wir nehmen an, dass WM nicht leer ist, also
    mind. ein Element enthält. Sei wm so ein Element, also wm e WM. Da WM Teilmenge aller Endsegmente ist und die Endsegmente nur natürliche
    Zahlen enthalten, ist wm eine natürliche Zahl. wm ist aber nicht im
    Endsegment {wm+1, wm+2, wm+3, ...} enthalten. Widerspruch! WM ist also leer.

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  • From Moebius@21:1/5 to All on Mon Oct 14 17:04:29 2024
    Am 13.10.2024 um 10:52 schrieb Moebius:

    WM faselt wieder einmal etwas daher:

    [...] If every endsegment has an infinite subset, then
    there exists one and the same infinite subset of every endsegment.

    Eine falsche Behauptung.

    1. Jedes Endsegment E besitzt eine endliche Teilmenge, nämlich E selbst.

    Dass _jedes_ Endsegment unendlich ist, hat man Dir hier schon ein paar
    hundert Mal erklärt, Mückenheim.

    2. Es gibt keine unendliche Menge, die als Teilmenge in allen
    Endsegmenten enthalten ist. Ja es gibt nicht mal eine NICHTLEERE Menge,
    die als Teilmenge in allen Endsegmenten enthalten ist.

    Beweis: Sei WM eine Menge, die als Teilmenge in allen Endsegmenten
    enthalten ist. (Dass es solche Mengen gibt, ist klar, die leere Menge
    ist z. B. so eine Menge.) Wir nehmen an, dass WM nicht leer ist, also
    mind. ein Element enthält. Sei wm so ein Element, also wm e WM. Da WM Teilmenge aller Endsegmente ist und die Endsegmente nur natürliche
    Zahlen enthalten, ist wm eine natürliche Zahl. wm ist aber nicht im
    Endsegment {wm+1, wm+2, wm+3, ...} enthalten. Widerspruch! WM ist also leer.

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  • From WM@21:1/5 to Jim Burns on Mon Oct 14 16:43:46 2024
    On 13.10.2024 18:28, Jim Burns wrote:
    On 10/12/2024 2:06 PM, WM wrote:
    On 10.10.2024 22:47, Jim Burns wrote:
    On 10/9/2024 11:39 AM, WM wrote:

    {1, 2, 3, ..., ω}*2 = {2, 4, 6, ..., ω*2} .

    Each γ≠0 preceding ω is (our) finite.

    There are two alternatives:
    Either doubling creates natnumbers,
    then they are not among those doubled,
    then we have not doubled all.
    Or we have doubled all
    but then larger numbers have been created.

    There are two alternatives:
    Either 𝔊 exists such that 2⋅𝔊 < ω ≤ 2⋅(𝔊+1)
    Or {2,4,6,...} ᵉᵃᶜʰ< ω

    ⎛ Assume 2⋅𝔊 < ω ≤ 2⋅(𝔊+1)

    ⎜ 2⋅𝔊 < ω
    ⎜ For each j such that 0 < j ≤ 2⋅𝔊
    ⎜ j-1 exists.
    ⎜ 2⋅𝔊 = (2⋅𝔊+1)-1 exists
    ⎜ 2⋅𝔊+1 = (2⋅𝔊+2)-1 exists
    ⎜ 2⋅𝔊+2 = 2⋅(𝔊+1)
    Correct.
    ⎜ 2⋅(𝔊+1) < ω
    Mistake.
    ⎜ However,
    ⎜ ω ≤ 2⋅(𝔊+1)
    ⎝ Contradiction.
    No, your mistake.

    Regards, WM

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  • From joes@21:1/5 to All on Mon Oct 14 15:53:53 2024
    Am Mon, 14 Oct 2024 15:34:59 +0200 schrieb WM:
    On 14.10.2024 14:00, joes wrote:
    Am Mon, 14 Oct 2024 12:35:56 +0200 schrieb WM:

    False. n*2 > n for all numbers, even for infinite numbers.
    Of course, and if the infinity is actual, they must already be in
    there.
    They cannot be there because doubling all elements of a set of naturals doubles the space covered on the number line.
    It does not. Changing the elements does not change their number.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
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  • From joes@21:1/5 to All on Mon Oct 14 16:01:16 2024
    Am Mon, 14 Oct 2024 15:37:13 +0200 schrieb WM:
    On 14.10.2024 14:02, joes wrote:
    Am Mon, 14 Oct 2024 12:28:58 +0200 schrieb WM:
    On 12.10.2024 22:47, Richard Damon wrote:
    On 10/12/24 2:55 PM, WM wrote:

    2n > n. That holds for all finite numbers. It halves the density.
    And half of infinity is infinity.
    The density of the natural umbers is 1 number per place, the density
    of the doubled numbers is 1/2 number per place.
    And there being inf. many places, that makes both amounts infinite.
    Neither 1 nor 1/2 are infinite. These values are calculated by all
    finite subsets of the set and in the limit.
    The amount of numbers in G and N. You cannot make an infinite set
    finite by only taking every second number. A subset cannot have
    more elements than the parent.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Mon Oct 14 16:04:15 2024
    Am Mon, 14 Oct 2024 15:40:01 +0200 schrieb WM:
    On 14.10.2024 14:15, joes wrote:

    No, we are taking the complete, actually infinite set which reaches to
    "before" w.
    and fills the space between 0 and ω evenly. Same happens with the
    doubled set between 0 and ω2.
    No, there is no consequent infinity. The even numbers do not go
    0, 2, 4, ..., w, w+2, w+4, ..., w*2

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Mon Oct 14 18:15:49 2024
    Am 14.10.2024 um 18:04 schrieb joes:
    Am Mon, 14 Oct 2024 15:40:01 +0200 schrieb WM:
    On 14.10.2024 14:15, joes wrote:

    No, we are taking the complete, actually infinite set
    [of ordinal numbers which lie] "before" ω.

    and fills the space between 0 and ω evenly. Same happens with the
    doubled set between 0 and ω2.

    No, there is no consequent infinity. The even numbers do not go
    0, 2, 4, ..., ω, ω+2, ω+4, ..., ω*2

    Just let Mückenhirn know:

    An e IN: n*2 < ω .

    Proof: An e IN: n*2 e IN (easy) and An e IN: n < ω. qed

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Mon Oct 14 18:20:00 2024
    Am 14.10.2024 um 18:15 schrieb Moebius:
    Am 14.10.2024 um 18:04 schrieb joes:
    Am Mon, 14 Oct 2024 15:40:01 +0200 schrieb WM:
    On 14.10.2024 14:15, joes wrote:

    No, we are taking the complete, actually infinite set [of ordinal
    numbers which lie] "before" ω.

    and fills the space between 0 and ω evenly. Same happens with the
    doubled set between 0 and ω2.

    No, there is no consequent infinity. The even numbers do not go
    0, 2, 4, ..., ω, ω+2, ω+4, ..., ω*2

    Just let Mückenhirn know:

        An e IN: n*2 < ω .

    Proof: An e IN: n*2 e IN (easy) and An e IN: n < ω. qed

    Hint@Mückenhirn:

    0 < 1 < 2 < 3 < 4 < 5 < 6 < ... < ω ,

    "hence":

    0 < 2 < 4 < 6 < ... < ω .

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to joes on Mon Oct 14 18:29:22 2024
    On 14.10.2024 17:53, joes wrote:
    Am Mon, 14 Oct 2024 15:34:59 +0200 schrieb WM:
    On 14.10.2024 14:00, joes wrote:
    Am Mon, 14 Oct 2024 12:35:56 +0200 schrieb WM:

    False. n*2 > n for all numbers, even for infinite numbers.
    Of course, and if the infinity is actual, they must already be in
    there.
    They cannot be there because doubling all elements of a set of naturals
    doubles the space covered on the number line.
    It does not. Changing the elements does not change their number.

    Their number remains the same, namely |ℕ|, but they have only half the original density.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Moebius on Mon Oct 14 18:25:50 2024
    On 14.10.2024 17:05, Moebius wrote:
    Am 13.10.2024 um 10:52 schrieb Moebius:

    WM faselt wieder einmal etwas daher:

    [...] If every endsegment has an infinite subset, then
    there exists one and the same infinite subset of every endsegment.

    Eine falsche Behauptung.

    1. Jedes Endsegment E besitzt eine unendliche Teilmenge, nämlich E selbst. 2. Es gibt keine unendliche Menge, die als Teilmenge in allen
    Endsegmenten enthalten ist.

    Durch Wiederholung wird Deine extrem dumme Behauptung nicht besser.
    Endsegmente bilden eine abnehmende Mengenfolge, wobei jedes Endsegment
    außer dem ersten, nämlich ℕ, ein Element weniger als sein Vorgänger besitzt. Man spricht auch von einer inklusionsmonoton abnehmenden
    Mengefolge. Jedes Endsegment besitzt also seinen gesamten Inhalt
    gemeinsam mit allen Vorgängern. Das ist für alle Endsegmente richtig und zeigt insbesondere, dass unendliche Endsegmente eine unendliche Menge
    gemeinsam mit allen Vorgängern besitzen. Da diese unendliche Menge nicht
    als Indizes für die unendlichen Endsegmente verfügbar ist, ist die Menge
    der unendlichen Endsegmente endlich, genauer: potentiell unendlich.

    Beweis: Sei WM eine Menge, die als Teilmenge in allen Endsegmenten
    enthalten ist. (Dass es solche Mengen gibt, ist klar, die leere Menge
    ist z. B. so eine Menge.) Wir nehmen an, dass WM nicht leer ist, also
    mind. ein Element enthält. Sei wm so ein Element, also wm e WM.

    Wenn alle Endsegmente unendlich sind, kann man ihre Inhalte nicht näher angeben oder auffinden. Deswegen ist auch wm ein nicht auffindbares Element.

    Gruß, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to joes on Mon Oct 14 18:37:31 2024
    On 14.10.2024 18:04, joes wrote:
    Am Mon, 14 Oct 2024 15:40:01 +0200 schrieb WM:
    On 14.10.2024 14:15, joes wrote:

    No, we are taking the complete, actually infinite set which reaches to
    "before" w.
    and fills the space between 0 and ω evenly. Same happens with the
    doubled set between 0 and ω2.
    No, there is no consequent infinity. The even numbers do not go
    0, 2, 4, ..., w, w+2, w+4, ..., w*2

    Either the doubled numbers are natural, then half of them have not been
    among the original set, or all natural numbers have been doubled, then
    the result contains infinite numbers.

    That doubling _all_ natural numbers only yields _all_ natural numbers is impossible.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Mon Oct 14 13:13:28 2024
    On 10/14/2024 10:43 AM, WM wrote:
    On 13.10.2024 18:28, Jim Burns wrote:
    On 10/12/2024 2:06 PM, WM wrote:
    On 10.10.2024 22:47, Jim Burns wrote:
    On 10/9/2024 11:39 AM, WM wrote:

    {1, 2, 3, ..., ω}*2 = {2, 4, 6, ..., ω*2} .

    Each γ≠0 preceding ω is (our) finite.

    There are two alternatives:
    Either doubling creates natnumbers,
      then they are not among those doubled,
      then we have not doubled all.
    Or we have doubled all
      but then larger numbers have been created.

    There are two alternatives:
    Either 𝔊 exists such that 2⋅𝔊 < ω ≤ 2⋅(𝔊+1)
    Or {2,4,6,...} ᵉᵃᶜʰ< ω

    ⎛ Assume 2⋅𝔊 < ω ≤ 2⋅(𝔊+1)

    ⎜ 2⋅𝔊 < ω
    ⎜ For each j such that 0 < j ≤ 2⋅𝔊
    ⎜  j-1 exists.
    ⎜ 2⋅𝔊 = (2⋅𝔊+1)-1 exists
    ⎜ 2⋅𝔊+1 = (2⋅𝔊+2)-1 exists
    ⎜ 2⋅𝔊+2 = 2⋅(𝔊+1)

    Correct.

    ⎜ For each j such that 0 < j ≤ 2⋅(𝔊+1)
    ⎜ j-1 exists.
    ⎜ 2⋅(𝔊+1) < ω

    Mistake.

    ω is the first not.finite ordinal.
    Each finite ordinal is before ω

    If 2⋅𝔊 is countable.to from 0
    then 2⋅(𝔊+1) is countable.to from 0

    If 2⋅𝔊 is finite
    then 2⋅(𝔊+1) is finite

    If 2⋅𝔊 < ω
    then 2⋅(𝔊+1) < ω

    ⎜ However,
    ⎜ ω ≤ 2⋅(𝔊+1)
    ⎝ Contradiction.

    No, your mistake.

    You (WM) think that
    infinite is just like finite,
    but more.

    However,
    finite is countable.to from nothing, and
    infinite is otherwise, is not countable.to

    Whatever is countable.to
    is countable.past, to more countable.to
    No last finite successor.
    𝔊 < ω ⇒ 𝔊+1 < ω

    Sums are defined from successors.
    k+(𝔊+1) = (k+𝔊)+1
    No last finite sum.
    k+𝔊 < ω ⇒ (k+𝔊)+1 < ω ⇒ k+(𝔊+1) < ω

    Products are defined from sums.
    k×(𝔊+1) = k+(k×𝔊)
    No last finite product.
    k×𝔊 < ω ⇒ k+(k×𝔊) < ω ⇒ k×(𝔊+1) < ω

    And so on, staying within the finites.

    k^(𝔊+1) = k×(k^𝔊)
    k^𝔊 < ω ⇒ k×(k^𝔊) < ω ⇒ k^(𝔊+1) < ω

    k⇈(𝔊+1) = k^(k⇈𝔊)
    k⇈𝔊 < ω ⇒ k^(k⇈𝔊) < ω ⇒ k⇈(𝔊+1) < ω

    ...

    ω is the first not.finite ordinal.
    Finite does NOT mean less.than.unreasonably.large.
    Finite means countable.to.from.0
    ω is the first not.countable.to.from.0 ordinal.
    Everything before ω is countable.to.from.0
    ω and everything after ω is otherwise.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Mon Oct 14 20:07:18 2024
    On 14.10.2024 19:13, Jim Burns wrote:
    On 10/14/2024 10:43 AM, WM wrote:
    On 13.10.2024 18:28, Jim Burns wrote:
    On 10/12/2024 2:06 PM, WM wrote:
    On 10.10.2024 22:47, Jim Burns wrote:
    On 10/9/2024 11:39 AM, WM wrote:

    {1, 2, 3, ..., ω}*2 = {2, 4, 6, ..., ω*2} .

    Each γ≠0 preceding ω is (our) finite.

    There are two alternatives:
    Either doubling creates natnumbers,
      then they are not among those doubled,
      then we have not doubled all.
    Or we have doubled all
      but then larger numbers have been created.

    There are two alternatives:
    Either 𝔊 exists such that 2⋅𝔊 < ω ≤ 2⋅(𝔊+1)
    Or {2,4,6,...} ᵉᵃᶜʰ< ω

    ⎛ Assume 2⋅𝔊 < ω ≤ 2⋅(𝔊+1)

    ⎜ 2⋅𝔊 < ω
    ⎜ For each j such that 0 < j ≤ 2⋅𝔊
    ⎜  j-1 exists.
    ⎜ 2⋅𝔊 = (2⋅𝔊+1)-1 exists
    ⎜ 2⋅𝔊+1 = (2⋅𝔊+2)-1 exists
    ⎜ 2⋅𝔊+2 = 2⋅(𝔊+1)

    Correct.

    ⎜ For each j such that 0 < j ≤ 2⋅(𝔊+1)
    ⎜  j-1 exists. ⎜ 2⋅(𝔊+1) < ω

    Mistake.

    ω is the first not.finite ordinal.
    Each finite ordinal is before ω

    Yes.

    If 2⋅𝔊 is countable.to from 0
    then 2⋅(𝔊+1) is countable.to from 0

    Mistake.

    If 2⋅𝔊 is finite
    then 2⋅(𝔊+1) is finite

    Mistake.

    If 2⋅𝔊 < ω
    then 2⋅(𝔊+1) < ω

    Mistake.

    Try again considering the darkness of most numbers.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Mon Oct 14 22:03:21 2024
    On 14.10.2024 21:47, Jim Burns wrote:
    On 10/14/2024 2:07 PM, WM wrote:

    Try again
    considering the darkness of most numbers.

    ⎛ A set S of ordinals holds first.S or is empty.

    That is true for visible ordinals only.

    Whether k or ξ or any ordinal is dark
    is irrelevant to that description.

    That description is irrelevant to the mathematics of actual infinity
    which is what I pursue.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Mon Oct 14 15:47:15 2024
    On 10/14/2024 2:07 PM, WM wrote:
    On 14.10.2024 19:13, Jim Burns wrote:
    On 10/14/2024 10:43 AM, WM wrote:
    On 13.10.2024 18:28, Jim Burns wrote:
    On 10/12/2024 2:06 PM, WM wrote:
    On 10.10.2024 22:47, Jim Burns wrote:
    On 10/9/2024 11:39 AM, WM wrote:

    {1, 2, 3, ..., ω}*2 = {2, 4, 6, ..., ω*2} .

    Each γ≠0 preceding ω is (our) finite.

    There are two alternatives:
    Either doubling creates natnumbers,
      then they are not among those doubled,
      then we have not doubled all.
    Or we have doubled all
      but then larger numbers have been created.

    There are two alternatives:
    Either 𝔊 exists such that 2⋅𝔊 < ω ≤ 2⋅(𝔊+1)
    Or {2,4,6,...} ᵉᵃᶜʰ< ω

    ⎛ Assume 2⋅𝔊 < ω ≤ 2⋅(𝔊+1)

    ⎜ 2⋅𝔊 < ω
    ⎜ For each j such that 0 < j ≤ 2⋅𝔊
    ⎜  j-1 exists.
    ⎜ 2⋅𝔊 = (2⋅𝔊+1)-1 exists
    ⎜ 2⋅𝔊+1 = (2⋅𝔊+2)-1 exists
    ⎜ 2⋅𝔊+2 = 2⋅(𝔊+1)

    Correct.

    ⎜ For each j such that 0 < j ≤ 2⋅(𝔊+1)
    ⎜  j-1 exists.
    ⎜ 2⋅(𝔊+1) < ω

    Mistake.

    ω is the first not.finite ordinal.
    Each finite ordinal is before ω

    Yes.

    Your 'yes' is really disagreement with us
    because you have your private idea of
    what 'finite' means.

    If 2⋅𝔊 is countable.to from 0
    then 2⋅(𝔊+1) is countable.to from 0

    Mistake.

    lemma.
    2⋅(𝔊+1) is countable.to from 2⋅𝔊
    Proof: ⟨ 2⋅𝔊 2⋅𝔊+1 2⋅(𝔊+1) ⟩

    ----
    If 2⋅𝔊 is countable.to from 0
    and 2⋅(𝔊+1) is countable.to from 2⋅𝔊 [lemma]
    then 2⋅(𝔊+1) is countable.to from 0

    If 2⋅𝔊 is finite
    then 2⋅(𝔊+1) is finite

    Mistake.

    If 2⋅𝔊 < ω
    then 2⋅(𝔊+1) < ω

    Mistake.

    Try again
    considering the darkness of most numbers.

    ⎛ A set S of ordinals holds first.S or is empty.

    ⎜ Ordinal ξ has successor ξ+1 = ξ∪{ξ}

    ⎜ _Finite_ non.0 ordinal k
    ⎜ has predecessor k-1: (k-1)+1 = k and
    ⎜ each prior non.0 ordinal j < k
    ⎝ has predecessor j-1: (j-1)+1 = j

    Whether k or ξ or any ordinal is dark
    is irrelevant to that description.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Mon Oct 14 20:00:01 2024
    On 10/14/2024 4:03 PM, WM wrote:
    On 14.10.2024 21:47, Jim Burns wrote:
    On 10/14/2024 2:07 PM, WM wrote:

    Try again
    considering the darkness of most numbers.

    ⎛ A set S of ordinals holds first.S or is empty.

    That is true for visible ordinals only.

    That is true for all ordinals.
    That is what we mean by 'ordinals'.

    Non.well.ordered ordinals belong with
    non.three.cornered triangles,
    among the self.contradictorily named.

    It would look suspiciously as though
    you (WM) _didn't know_ what an ordinal was,
    if you hadn't been _told_ what it was,
    by latest count, eleventy bazillion times.

    Whether k or ξ or any ordinal is dark
    is irrelevant to that description.

    That description is irrelevant to
    the mathematics of actual infinity
    which is what I pursue.

    Perhaps there is a perfectly reasonable explanation
    why you (WM) can only pursue that
    while sounding as though you don't know
    what an ordinal is.

    So, what is that perfectly reasonable explanation?

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Tue Oct 15 15:51:43 2024
    Am Mon, 14 Oct 2024 18:37:31 +0200 schrieb WM:
    On 14.10.2024 18:04, joes wrote:
    Am Mon, 14 Oct 2024 15:40:01 +0200 schrieb WM:
    On 14.10.2024 14:15, joes wrote:

    No, we are taking the complete, actually infinite set which reaches
    to "before" w.
    and fills the space between 0 and ω evenly. Same happens with the
    doubled set between 0 and ω2.
    No, there is no consequent infinity. The even numbers do not go 0, 2,
    4, ..., w, w+2, w+4, ..., w*2
    Either the doubled numbers are natural, then half of them have not been
    among the original set, or all natural numbers have been doubled, then
    the result contains infinite numbers.
    Which "half"?

    That doubling _all_ natural numbers only yields _all_ natural numbers is impossible.
    Of course. But all doubled naturals are themselves natural.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Tue Oct 15 15:48:17 2024
    Am Mon, 14 Oct 2024 18:25:50 +0200 schrieb WM:
    On 14.10.2024 17:05, Moebius wrote:
    Am 13.10.2024 um 10:52 schrieb Moebius:
    WM faselt wieder einmal etwas daher:

    [...] If every endsegment has an infinite subset, then there exists
    one and the same infinite subset of every endsegment.
    Eine falsche Behauptung.
    1. Jedes Endsegment E besitzt eine unendliche Teilmenge, nämlich E
    selbst.
    2. Es gibt keine unendliche Menge, die als Teilmenge in allen
    Endsegmenten enthalten ist.
    Durch Wiederholung wird Deine extrem dumme Behauptung nicht besser.
    Endsegmente bilden eine abnehmende Mengenfolge, wobei jedes Endsegment
    außer dem ersten, nämlich ℕ, ein Element weniger als sein Vorgänger besitzt. Man spricht auch von einer inklusionsmonoton abnehmenden
    Mengefolge. Jedes Endsegment besitzt also seinen gesamten Inhalt
    gemeinsam mit allen Vorgängern. Das ist für alle Endsegmente richtig und zeigt insbesondere, dass unendliche Endsegmente eine unendliche Menge gemeinsam mit allen Vorgängern besitzen.
    Jedes Endsegment besitzt sogar seinen ganzen Inhalt mit seinem Vorgänger
    und damit auch mit dem ersten gemeinsam. Und weil das erste unendlich ist,
    gibt es auch unendlich viele Segmente.

    Da diese unendliche Menge nicht
    als Indizes für die unendlichen Endsegmente verfügbar ist, ist die Menge der unendlichen Endsegmente endlich, genauer: potentiell unendlich.
    Warum ist die nicht verfügbar?
    E(n) = {n, n+1, n+2, ...}
    E(n+1 = {n+1, n+2, ...}
    Und endlich ist auf gar keinen Fall das Gleiche wie unendlich.

    Beweis: Sei WM eine Menge, die als Teilmenge in allen Endsegmenten
    enthalten ist. (Dass es solche Mengen gibt, ist klar, die leere Menge
    ist z. B. so eine Menge.) Wir nehmen an, dass WM nicht leer ist, also
    mind. ein Element enthält. Sei wm so ein Element, also wm e WM.
    Wenn alle Endsegmente unendlich sind, kann man ihre Inhalte nicht näher angeben oder auffinden. Deswegen ist auch wm ein nicht auffindbares
    Element.
    Doch, kann man, indem man die unendliche Menge aller Endsegmente aktual betrachtet. Oder einfach N\{0}=E(1). Oder E(n)->E(n+1).

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Tue Oct 15 18:45:46 2024
    Am 15.10.2024 um 17:48 schrieb joes:
    Am Mon, 14 Oct 2024 18:25:50 +0200 schrieb WM:
    On 14.10.2024 17:05, Moebius wrote:
    Am 13.10.2024 um 10:52 schrieb Moebius:
    WM faselt wieder einmal etwas daher:

    [...] If every endsegment has an infinite subset, then there exists >>>>>> one and the same infinite subset of every endsegment.

    Eine falsche Behauptung. Denn:
    1. Jedes Endsegment E besitzt eine unendliche Teilmenge, nämlich E
    selbst.
    2. Es gibt keine unendliche Menge, die als Teilmenge in allen
    Endsegmenten enthalten ist.

    Endsegmente bilden eine abnehmende Mengenfolge, wobei jedes Endsegment
    außer dem ersten, nämlich ℕ, ein Element weniger als sein Vorgänger
    besitzt. Man spricht auch von einer inklusionsmonoton abnehmenden
    Mengefolge. Jedes Endsegment besitzt also seinen gesamten Inhalt
    gemeinsam mit allen Vorgängern. Das ist für alle Endsegmente richtig und >> zeigt insbesondere, dass [jedes] Endsegment eine unendliche Menge
    gemeinsam mit allen [seinen] Vorgängern besitz[t].

    Richtig.

    Was es aber NICHT zeigt, ist, dass jedes Endsegment eine unendliche
    Menge gemeinsam mit allen seinen Nachfolgern besitzt.

    Wenn es zu jedem Endsegment so eine Menge gäbe, dann müsste insbesondere
    das erste Endsegment so eine Menge gemeinsam mit allen seinen
    Nachfolgern besitzen. Es müsste also eine unendliche Menge geben, die in
    allen Endsegmenten (als Teilmenge) enthalten ist.

    Tatsächlich gilt: Es gibt keine nicht-leere Menge, die als Teilmenge in
    allen Endsegmenten enthalten ist.

    Beweis: Sei WM eine Menge, die als Teilmenge in allen Endsegmenten
    enthalten ist. (Dass es solche Mengen gibt, ist klar, die leere Menge
    ist z. B. so eine Menge.) Wir nehmen an, dass WM nicht leer ist, also
    mind. ein Element enthält. Sei wm so ein Element, also wm e WM.

    Wenn alle Endsegmente unendlich sind, kann man ihre Inhalte nicht näher
    angeben oder auffinden. Deswegen ist auch wm ein nicht auffindbares
    Element.

    Mückenheim, Deinen psychotischen Scheiß kannst Du Deinem Psychiater erzählen.

    In der Mathematik kann man jederzeit auf ein beliebig benanntes
    beliebiges Element einer nichtleeren Menge (oder "Gesamtheit") Bezug
    nehmen. Dazu muss man es nicht "finden". <Heilige Scheiße!>

    Im übrigen lässt sich dieses Element in dem oben beschrieben Beweis
    sogar sehr leicht "finden", wenn man es etwas genauer spezifiziert.

    Nicht, dass das nötig wäre, Du bist ohnehin zu blöde, das zu verstehen.

    Aber viell. kannst Du Dich noch an die Zeit vor dem Ausbruch deiner
    Psychose erinnern - insbesondere daran, dass jede nichtleere Menge
    natürlicher Zahlen ein kleinstes Element besitzt. Daher kann man ganz
    konkret auf dieses Element Bezug nehmen (wenn man es mit einer
    nichtleeren Menge natürlicher Zahlen zu tun hat). "Finden" lässt es sich
    auch ganz leicht: es ist das kleinste Element der betrachten Menge.

    Also kann man den Beweis auch so formulieren:

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    Beweis: Sei WM eine Menge, die als Teilmenge in allen Endsegmenten
    enthalten ist. (Dass es solche Mengen gibt, ist klar, die leere Menge
    ist z. B. so eine Menge.) Wir nehmen nun an, dass WM nicht leer ist. Da
    WM Teilmenge aller Endsegmente ist und die Endsegmente nur natürliche
    Zahlen enthalten, sind alle Zahlen in WM natürliche Zahlen. WM ist also
    eine nichtleere Menge natürlicher Zahlen (und besitzt daher ein
    kleinstes Element). Sei wm das kleinste Element in WM. Es gilt dann also
    wm e WM und wm e IN. wm ist aber nicht im Endsegment {wm+1, wm+2, wm+3,
    ...} enthalten. Widerspruch! WM ist also leer.

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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  • From Richard Damon@21:1/5 to All on Tue Oct 15 22:40:49 2024
    On 10/14/24 6:20 AM, WM wrote:
    On 12.10.2024 22:07, FromTheRafters wrote:
    WM used his keyboard to write :

    I use properties of finite numbers.

    Wrong, you disbelieve (when it suits you) the idea of cardinality.

    Cardinality is a property of potentially infinite sets.

    Regards, WM


    Why do you say that? Cardinality is the count of the members of that
    set. An actually infinite set still has a count of its membership. In
    fact, that count is now fixed.

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  • From Richard Damon@21:1/5 to All on Tue Oct 15 22:41:08 2024
    On 10/14/24 6:35 AM, WM wrote:
    On 12.10.2024 22:47, Richard Damon wrote:
    On 10/12/24 2:39 PM, WM wrote:
    On 11.10.2024 20:02, Jim Burns wrote:

    "Potential ℕ" vs. "actual ℕ" leaves unchanged
    which claims we reason to.

    Potential infinity: All natural numbers when double yield natural
    numbers but larger numbers are among the result.
    In actual infinity no new naturals can be created but since doubling
    doubles the value of each number, numbers of the second number class
    are created.

    No, in actual infinity no new natural can be created,

    True.

    but every natural number can find the one that is twice itself in the
    set,

    False. n*2 > n for all numbers, even for infinite numbers.

    Regards, WM

    Nope, that is a property of finite numbers, and infinite ordinals only.
    It doesn't apply for infinite cardinal numbers. (Omega * 2 is bigger
    than Omega, but Aleph_0 * 2 is just Aleph_0)

    For finite numbers n*2 is also finite, and thus less than Omega, and in
    the actually infinite set, that doesn't require the creation of new
    numbers, as the full infinite set was there to begin with, even if you
    didn't notice them when you looked. (And that doesn't make them "dark")

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  • From Richard Damon@21:1/5 to All on Tue Oct 15 22:45:11 2024
    On 10/14/24 12:37 PM, WM wrote:
    On 14.10.2024 18:04, joes wrote:
    Am Mon, 14 Oct 2024 15:40:01 +0200 schrieb WM:
    On 14.10.2024 14:15, joes wrote:

    No, we are taking the complete, actually infinite set which reaches to >>>> "before" w.
    and fills the space between 0 and ω evenly. Same happens with the
    doubled set between 0 and ω2.
    No, there is no consequent infinity. The even numbers do not go
    0, 2, 4, ..., w, w+2, w+4, ..., w*2

    Either the doubled numbers are natural, then half of them have not been
    among the original set, or all natural numbers have been doubled, then
    the result contains infinite numbers.

    That doubling _all_ natural numbers only yields _all_ natural numbers is impossible.

    Regards, WM



    OF course it is impossible, it only yield half of the numbers, as no odd numbers are in the set.

    Of course, both sets have exactly the same number of members, as we
    didn't lose any in the operation.

    Your problem is you just don't understand that infinite sets, even when actually created, don't have an "end" to go past.

    It seems strange by finite standards, but that is the nature of the
    infinite, it DOES break many of the rules that we clearly see in finite
    sets.

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  • From WM@21:1/5 to Richard Damon on Wed Oct 16 09:23:43 2024
    On 16.10.2024 04:45, Richard Damon wrote:
    On 10/14/24 6:31 AM, WM wrote:
    On 12.10.2024 22:47, Richard Damon wrote:
    On 10/12/24 2:19 PM, WM wrote:
    On 11.10.2024 03:38, Richard Damon wrote:

    The SIZE of the set of natural numbers is infinite, and thus obeys
    the laws of infinite numbers. An infinite number, which has a
    finite number, added to, multiplied by, or used as a power, is
    still that same infinite number. It may seem impossible, but that
    is the nature of infinite numbers.

    No natural number is infinite. They all obey the law of finite
    numbers. That includes the law that 2n > n.

    Right, but for any number n that is a natural number 2n is also a
    natural number and in the set.

    But not in the set of numbers to be doubled. Half of the doubled
    numbers are not in that set.

    Why not?

    Remember, the set is infinite, so doesn't have an end to go past.

    But it is complete, and all numbers are doubled such that none remains
    which is greater than all doubled numbers.

    Regards, WM

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  • From WM@21:1/5 to Ross Finlayson on Wed Oct 16 10:19:55 2024
    On 15.10.2024 22:22, Ross Finlayson wrote:

    "countable cardinality" is so dirt-obvious
    that it should go without saying,

    And it is disproved by aa general truth: When doubling natural numbers
    we obtain natural numbers which have not been doubled.
    In potential infinity we obtain more even natural numbers than have been doubled.
    In actual infinity we double ℕ and obtain neither ℕ or a subset of ℕ.

    Regards, WM

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  • From WM@21:1/5 to Moebius on Wed Oct 16 10:24:38 2024
    On 15.10.2024 18:45, Moebius wrote:
    Am 15.10.2024 um 17:48 schrieb joes:

    Endsegmente bilden eine abnehmende Mengenfolge, wobei jedes Endsegment
    außer dem ersten, nämlich ℕ, ein Element weniger als sein Vorgänger >>> besitzt. Man spricht auch von einer inklusionsmonoton abnehmenden
    Mengefolge. Jedes Endsegment besitzt also seinen gesamten Inhalt
    gemeinsam mit allen Vorgängern. Das ist für alle Endsegmente richtig und >>> zeigt insbesondere, dass [jedes] Endsegment eine unendliche Menge
    gemeinsam mit allen [seinen] Vorgängern besitz[t].

    Richtig.

    Was es aber NICHT zeigt, ist, dass jedes Endsegment eine unendliche
    Menge gemeinsam mit allen seinen Nachfolgern besitzt.

    Richtig. Aber es zeigt, dass jedes unendliche Endsegment eine unendliche
    Menge gemeinsam mit jedem unendlichen Endsegment hat. Denn jedes
    unendliche Endsegment hat nur unendliche Vorgänger.

    Wenn es zu jedem Endsegment so eine Menge gäbe, dann müsste insbesondere das erste Endsegment so eine Menge gemeinsam mit allen seinen
    Nachfolgern besitzen. Es müsste also eine unendliche Menge geben, die in allen Endsegmenten (als Teilmenge) enthalten ist.

    Tatsächlich gilt: Es gibt keine nicht-leere Menge, die als Teilmenge in allen Endsegmenten enthalten ist.

    Also gibt es ein leeres Endsegment. Oder sollten Endsegmente nur im
    Schnitt alle Zahlen verloren haben können?

    Gruß, WM

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  • From WM@21:1/5 to Richard Damon on Wed Oct 16 10:17:33 2024
    On 16.10.2024 04:45, Richard Damon wrote:
    On 10/14/24 12:37 PM, WM wrote:

    That doubling _all_ natural numbers only yields _all_ natural numbers
    is impossible.

    OF course it is impossible, it only yield half of the numbers, as no odd numbers are in the set.

    There is a general truth: When doubling natural numbers we obtain
    natural numbers which have not been doubled.
    In potential infinity we obtain more even natural numbers than have been doubled.
    In actual infinity we double ℕ and obtain neither ℕ or a subset of ℕ.

    Regards, WM

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  • From WM@21:1/5 to joes on Wed Oct 16 10:26:06 2024
    On 15.10.2024 17:51, joes wrote:
    Am Mon, 14 Oct 2024 18:37:31 +0200 schrieb WM:
    On 14.10.2024 18:04, joes wrote:
    Am Mon, 14 Oct 2024 15:40:01 +0200 schrieb WM:
    On 14.10.2024 14:15, joes wrote:

    No, we are taking the complete, actually infinite set which reaches
    to "before" w.
    and fills the space between 0 and ω evenly. Same happens with the
    doubled set between 0 and ω2.
    No, there is no consequent infinity. The even numbers do not go 0, 2,
    4, ..., w, w+2, w+4, ..., w*2
    Either the doubled numbers are natural, then half of them have not been
    among the original set, or all natural numbers have been doubled, then
    the result contains infinite numbers.
    Which "half"?

    There is a genaral rule not ope to further discussion:
    When doubling natural numbers we obtain natural numbers which have not
    been doubled.
    In potential infinity we obtain more even natural numbers than have been doubled.
    In actual infinity we double ℕ and obtain neither ℕ or a subset of ℕ.

    Regards, WM

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  • From WM@21:1/5 to Jim Burns on Wed Oct 16 10:27:57 2024
    On 15.10.2024 02:00, Jim Burns wrote:

    So, what is that perfectly reasonable explanation?

    There is a general rule not open to further discussion:
    When doubling natural numbers we obtain natural numbers which have not
    been doubled.
    In potential infinity we obtain more even natural numbers than have been doubled.
    In actual infinity we double ℕ and obtain neither ℕ or a subset of ℕ.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to joes on Wed Oct 16 10:32:46 2024
    On 15.10.2024 17:48, joes wrote:

    Jedes Endsegment besitzt sogar seinen ganzen Inhalt mit seinem Vorgänger
    und damit auch mit dem ersten gemeinsam. Und weil das erste unendlich ist, gibt es auch unendlich viele Segmente.

    Und trotzdem bleiben noch unendlich viele Zahlen nicht verindext?

    Gruß, WM

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  • From WM@21:1/5 to Chris M. Thomasson on Wed Oct 16 10:30:42 2024
    On 15.10.2024 00:27, Chris M. Thomasson wrote:

    Take the index, using natural numbers

    1: { 1 }
    2: { 1, 2 }
    3: { 1, 2, 3 }
    4: { 1, 2, 3, 4 }
    ...

    vs:

    1: { 2 }
    2: { 2, 4 }
    3: { 2, 4, 6 }
    4: { 2, 4, 6, 8 }
    ...

    There is a general rule not open to further discussion:
    When doubling natural numbers we obtain natural numbers which have not
    been doubled.
    In potential infinity we obtain more even natural numbers than have been doubled.
    In actual infinity we double ℕ and obtain neither ℕ or a subset of ℕ.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to joes on Wed Oct 16 10:33:52 2024
    On 14.10.2024 17:53, joes wrote:
    Am Mon, 14 Oct 2024 15:34:59 +0200 schrieb WM:
    On 14.10.2024 14:00, joes wrote:
    Am Mon, 14 Oct 2024 12:35:56 +0200 schrieb WM:

    False. n*2 > n for all numbers, even for infinite numbers.
    Of course, and if the infinity is actual, they must already be in
    there.
    They cannot be there because doubling all elements of a set of naturals
    doubles the space covered on the number line.
    It does not. Changing the elements does not change their number.

    There is a general rule not open to further discussion:
    When doubling natural numbers we obtain natural numbers which have not
    been doubled.
    In potential infinity we obtain more even natural numbers than have been doubled.
    In actual infinity we double ℕ and obtain neither ℕ or a subset of ℕ.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to All on Wed Oct 16 10:50:04 2024
    On 16.10.2024 10:27, WM wrote:
    On 15.10.2024 02:00, Jim Burns wrote:

    So, what is that perfectly reasonable explanation?

    There is a general rule not open to further discussion:
    When doubling natural numbers we obtain natural numbers which have not
    been doubled.

    CORRECTION: When doubling natural numbers we obtain even numbers which
    have not been doubled.

    In potential infinity we obtain more even natural numbers than have been doubled.
    In actual infinity we double ℕ and obtain neither ℕ or a subset of ℕ.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From joes@21:1/5 to All on Wed Oct 16 09:20:19 2024
    Am Wed, 16 Oct 2024 10:32:46 +0200 schrieb WM:
    On 15.10.2024 17:48, joes wrote:

    Jedes Endsegment besitzt sogar seinen ganzen Inhalt mit seinem
    Vorgänger und damit auch mit dem ersten gemeinsam. Und weil das erste
    unendlich ist, gibt es auch unendlich viele Segmente.
    Und trotzdem bleiben noch unendlich viele Zahlen nicht verindext?
    Was? Ein Segment hat einen Index und einen unendlichen Inhalt. Es gibt unendliche viele Segmente, einen für jede Zahl (die als Index dient).
    Jede Zahl ist Index eines unendlichen Segments, das alle Nachfolger
    enthält. Die Menge aller Indizes bis zu einem n ist N\E(n). Wo hakt's?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From Moebius@21:1/5 to All on Wed Oct 16 12:11:53 2024
    Am 16.10.2024 um 11:20 schrieb joes:
    Am Wed, 16 Oct 2024 10:32:46 +0200 schrieb WM:
    On 15.10.2024 17:48, joes wrote:

    Jedes Endsegment besitzt sogar seinen ganzen Inhalt mit seinem
    Vorgänger und damit auch mit dem ersten gemeinsam. Und weil das erste
    unendlich ist, gibt es auch unendlich viele Segmente.

    Und trotzdem bleiben noch unendlich viele Zahlen nicht verindext?

    Was? Ein Segment hat einen Index und einen unendlichen Inhalt. Es gibt unendliche viele Segmente, einen für jede Zahl (die als Index dient).
    Jede Zahl ist Index eines unendlichen Segments, das alle Nachfolger
    enthält. Die Menge aller Indizes bis zu einem n ist N\E(n). Wo hakt's?

    In seinem Oberstübchen.

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Wed Oct 16 07:54:42 2024
    On 10/16/24 4:30 AM, WM wrote:
    On 15.10.2024 00:27, Chris M. Thomasson wrote:

    Take the index, using natural numbers

    1: { 1 }
    2: { 1, 2 }
    3: { 1, 2, 3 }
    4: { 1, 2, 3, 4 }
    ...

    vs:

    1: { 2 }
    2: { 2, 4 }
    3: { 2, 4, 6 }
    4: { 2, 4, 6, 8 }
    ...

    There is a general rule not open to further discussion:
    When doubling natural numbers we obtain natural numbers which have not
    been doubled.
    In potential infinity we obtain more even natural numbers than have been doubled.
    In actual infinity we double ℕ and obtain neither ℕ or a subset of ℕ.

    Regards, WM


    But that isn't actually a general rule, so you are just admitting that
    you aren't talking about the same Natural Numbers that everyone else is
    talking about, but some bastardization that is just finite.

    NO natural number when doubled results in a value that wasn't a natural
    number all the time.

    Your problem is that your "Acutal Infinity" isn't actually Infinity, and
    like isn't actually "actually".

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  • From WM@21:1/5 to Richard Damon on Wed Oct 16 17:20:49 2024
    On 16.10.2024 13:54, Richard Damon wrote:
    On 10/16/24 4:30 AM, WM wrote:

    There is a general rule not open to further discussion:
    When doubling natural numbers we obtain even numbers which have not
    been doubled.
    In potential infinity we obtain more even natural numbers than have
    been doubled.
    In actual infinity we double ℕ and obtain neither ℕ or a subset of ℕ. >>
    But that isn't actually a general rule,

    It is a general rule that doubling creates larger numbers.

    NO natural number when doubled results in a value that wasn't a natural number all the time.

    That may be, but then not all natural numbers have been doubled. There
    are larger natnumbers available.

    Regards, WM

    Regards, WM

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  • From WM@21:1/5 to joes on Wed Oct 16 17:16:47 2024
    On 16.10.2024 11:20, joes wrote:
    Am Wed, 16 Oct 2024 10:32:46 +0200 schrieb WM:
    On 15.10.2024 17:48, joes wrote:

    Jedes Endsegment besitzt sogar seinen ganzen Inhalt mit seinem
    Vorgänger und damit auch mit dem ersten gemeinsam. Und weil das erste
    unendlich ist, gibt es auch unendlich viele Segmente.
    Und trotzdem bleiben noch unendlich viele Zahlen nicht verindext?
    Was? Ein Segment hat einen Index und einen unendlichen Inhalt. Es gibt unendliche viele Segmente, einen für jede Zahl (die als Index dient).
    Jede Zahl ist Index eines unendlichen Segments, das alle Nachfolger
    enthält. Die Menge aller Indizes bis zu einem n ist N\E(n). Wo hakt's?

    Bei den unendlich vielen Endsegmenten, die unendlich viele Zahlen als
    Indizes vrbraucht haben, von denen also unendlich viele keinen
    unendlichen Inhalt mehr haben können.

    Gruß, WM


    --- SoupGate-Win32 v1.05
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  • From joes@21:1/5 to All on Wed Oct 16 15:33:47 2024
    Am Wed, 16 Oct 2024 17:16:47 +0200 schrieb WM:
    On 16.10.2024 11:20, joes wrote:
    Am Wed, 16 Oct 2024 10:32:46 +0200 schrieb WM:
    On 15.10.2024 17:48, joes wrote:

    Jedes Endsegment besitzt sogar seinen ganzen Inhalt mit seinem
    Vorgänger und damit auch mit dem ersten gemeinsam. Und weil das erste >>>> unendlich ist, gibt es auch unendlich viele Segmente.
    Und trotzdem bleiben noch unendlich viele Zahlen nicht verindext?
    Was? Ein Segment hat einen Index und einen unendlichen Inhalt. Es gibt
    unendliche viele Segmente, einen für jede Zahl (die als Index dient).
    Jede Zahl ist Index eines unendlichen Segments, das alle Nachfolger
    enthält. Die Menge aller Indizes bis zu einem n ist N\E(n). Wo hakt's?
    Bei den unendlich vielen Endsegmenten, die unendlich viele Zahlen als
    Indizes vrbraucht haben, von denen also unendlich viele keinen
    unendlichen Inhalt mehr haben können.
    So eins gibt's nicht. Jedes hat einen endlichen Index.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From Moebius@21:1/5 to All on Wed Oct 16 17:49:18 2024
    Am 16.10.2024 um 17:33 schrieb joes:
    Am Wed, 16 Oct 2024 17:16:47 +0200 schrieb WM:
    On 16.10.2024 11:20, joes wrote:

    Wo hakt's?

    Bei den unendlich vielen Endsegmenten, die unendlich viele Zahlen als
    Indizes verbraucht haben, von denen also unendlich viele keinen
    unendlichen Inhalt mehr haben können.

    So eins gibt's nicht. Jedes hat einen endlichen Index [und einen unendlichen Inhalt --Moebius]

    z. B. den Index n und dann den unendlichen Inhalt n+1, n+2, n+3, ...

    Außer in Mückenheims Wahnwelt, denn:

    "It is not guaranteed that n+1 exists for every n." (WM, sci.math)

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  • From Jim Burns@21:1/5 to All on Wed Oct 16 11:34:59 2024
    On 10/16/2024 4:50 AM, WM wrote:
    On 16.10.2024 10:27, WM wrote:
    On 15.10.2024 02:00, Jim Burns wrote:
    On 10/14/2024 4:03 PM, WM wrote:
    On 14.10.2024 21:47, Jim Burns wrote:
    On 10/14/2024 2:07 PM, WM wrote:

    Try again
    considering the darkness of most numbers.

    ⎛ A set S of ordinals holds first.S or is empty.

    That is true for visible ordinals only.

    That description is irrelevant to
    the mathematics of actual infinity
    which is what I pursue.

    Perhaps
    there is a perfectly reasonable explanation
    why you (WM) can only pursue that
    while sounding as though you don't know
    what an ordinal is.

    So, what is that perfectly reasonable explanation?

    There is a general rule not open to further discussion:

    Triangles have three corners.

    ⎛ A set S of ordinals holds first.S or is empty.

    ⎜ Ordinal ξ has successor ξ+1 = ξ∪{ξ}

    ⎜ _Finite_ non.0 ordinal k
    ⎜ has predecessor k-1: (k-1)+1 = k and
    ⎜ each prior non.0 ordinal j < k
    ⎝ has predecessor j-1: (j-1)+1 = j

    There is a general rule not open to further discussion:
    When doubling natural numbers
    we obtain natural numbers which
    have not been doubled.

    CORRECTION:
    When doubling natural numbers
    we obtain even numbers which
    have not been doubled.

    The set S of ordinals which
    are finite and for which
    their double is not finite
    doesn't hold first.S = 𝔊

    ⎛ Proof:
    ⎝ not( countable.to 2⋅(𝔊-1) ∧ not.countable.to 2⋅𝔊 )

    The set S of ordinals which
    are finite and for which
    their double is not finite
    is empty.

    When doubling natural numbers (finite ordinals)
    we obtain natural numbers.

    When doubling all natural numbers
    we obtain only natural numbers.

    In potential infinity
    we obtain more even natural numbers
    than have been doubled.
    In actual infinity
    we double ℕ and obtain
    neither ℕ or a subset of ℕ.

    There is a general rule not open to further discussion:
    The natural numbers ℕ equal the finite ordinals 𝕆ᶠⁱⁿ

    Perhaps
    there is a perfectly reasonable explanation
    why you (WM) can only pursue your actual infinity
    while sounding as though you don't know
    what a natural number is.

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Jim Burns on Wed Oct 16 18:55:58 2024
    On 16.10.2024 17:34, Jim Burns wrote:
    On 10/16/2024 4:50 AM, WM wrote:

    There is a general rule not open to further discussion:
    When doubling natural numbers
    we obtain natural numbers which
    have not been doubled.

    CORRECTION:
    When doubling natural numbers
    we obtain even numbers which have not been doubled.

    The set S of ordinals which
    are finite  and for which
    their double is not finite
    is empty.

    Maybe. Then not all natural numbers have been doubled.

    When doubling natural numbers (finite ordinals)
    we obtain natural numbers.

    Maybe.

    When doubling all natural numbers
    we obtain only natural numbers.

    That is impossible.

    In potential infinity
    we obtain more even natural numbers
    than have been doubled.
    In actual infinity
    we double ℕ and obtain
    neither ℕ or a subset of ℕ.

    There is a general rule not open to further discussion:
    The natural numbers ℕ equal the finite ordinals 𝕆ᶠⁱⁿ

    That is only possible in potential infinity. But there the result is
    worthless.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to joes on Wed Oct 16 18:49:52 2024
    On 16.10.2024 17:33, joes wrote:
    Am Wed, 16 Oct 2024 17:16:47 +0200 schrieb WM:

    Bei den unendlich vielen Endsegmenten, die unendlich viele Zahlen als
    Indizes verbraucht haben, von denen also unendlich viele keinen
    unendlichen Inhalt mehr haben können.
    So eins gibt's nicht. Jedes hat einen endlichen Index.

    Dann ist auch ein endlicher Index und die darauf folgenden unendlich
    vielen Zahlen im Schnitt aller.

    Gruß, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to FromTheRafters on Wed Oct 16 18:58:19 2024
    On 16.10.2024 18:09, FromTheRafters wrote:
    WM formulated on Wednesday :
    On 16.10.2024 13:54, Richard Damon wrote:
    On 10/16/24 4:30 AM, WM wrote:

    There is a general rule not open to further discussion:
    When doubling natural numbers we obtain even numbers which have not
    been doubled.
    In potential infinity we obtain more even numbers than have
    been doubled.
    In actual infinity we double ℕ and obtain neither ℕ or a subset of ℕ.

    But that isn't actually a general rule,

    It is a general rule that doubling creates larger numbers.

    It is a general rule that doubling finite cardinal numbers creates
    larger finite cardinal numbers.

    Yes.

    In transfinite cardinalities Aleph_Zero
    times two is still Aleph_zero though.

    Here we talk only about natural numbers to be doubled.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Wed Oct 16 19:18:44 2024
    On 16.10.2024 13:54, Richard Damon wrote:
    On 10/16/24 4:50 AM, WM wrote:
    On 16.10.2024 10:27, WM wrote:
    On 15.10.2024 02:00, Jim Burns wrote:

    So, what is that perfectly reasonable explanation?

    There is a general rule not open to further discussion:
    When doubling natural numbers we obtain natural numbers which have
    not been doubled.

    CORRECTION: When doubling natural numbers we obtain even numbers which
    have not been doubled.

    But that isn't actually a general rule,

    Of course it is a general rule. Doubling creates larger numbers.

    Regards, WM

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  • From joes@21:1/5 to All on Wed Oct 16 17:17:18 2024
    Am Wed, 16 Oct 2024 18:49:52 +0200 schrieb WM:
    On 16.10.2024 17:33, joes wrote:
    Am Wed, 16 Oct 2024 17:16:47 +0200 schrieb WM:

    Bei den unendlich vielen Endsegmenten, die unendlich viele Zahlen als
    Indizes verbraucht haben, von denen also unendlich viele keinen
    unendlichen Inhalt mehr haben können.
    So eins gibt's nicht. Jedes hat einen endlichen Index.
    Dann ist auch ein endlicher Index und die darauf folgenden unendlich
    vielen Zahlen im Schnitt aller.
    Nein? Das Nachfolgersegment "verliert" genau diesen Index.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to All on Wed Oct 16 17:26:26 2024
    Am Wed, 16 Oct 2024 18:55:58 +0200 schrieb WM:
    On 16.10.2024 17:34, Jim Burns wrote:
    On 10/16/2024 4:50 AM, WM wrote:

    There is a general rule not open to further discussion:
    When doubling natural numbers we obtain natural numbers which have
    not been doubled.
    CORRECTION:
    When doubling natural numbers we obtain even numbers which have not
    been doubled.
    The set S of ordinals which are finite  and for which their double is
    not finite is empty.
    Maybe. Then not all natural numbers have been doubled.
    How do you mean?

    When doubling natural numbers (finite ordinals)
    we obtain natural numbers.
    Maybe.
    Maybe?!

    When doubling all natural numbers we obtain only natural numbers.
    That is impossible.
    This is the same statement as above.

    In potential infinity we obtain more even natural numbers than have
    been doubled.
    In actual infinity we double ℕ and obtain neither ℕ or a subset of ℕ.
    There is a general rule not open to further discussion:
    The natural numbers ℕ equal the finite ordinals 𝕆ᶠⁱⁿ
    That is only possible in potential infinity. But there the result is worthless.
    wtf "possible" "worthless" it is actually the case.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From Moebius@21:1/5 to All on Wed Oct 16 19:53:56 2024
    Am 16.10.2024 um 19:50 schrieb Chris M. Thomasson:
    On 10/16/2024 8:49 AM, Moebius wrote:

    "It is not guaranteed that n+1 exists for every n." (WM, sci.math)
    ^^^^^^^^^^^^^^

    One of WM's hyper moron quotes...

    One of many.

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  • From WM@21:1/5 to joes on Wed Oct 16 19:23:35 2024
    On 16.10.2024 19:17, joes wrote:
    Am Wed, 16 Oct 2024 18:49:52 +0200 schrieb WM:
    On 16.10.2024 17:33, joes wrote:
    Am Wed, 16 Oct 2024 17:16:47 +0200 schrieb WM:

    Bei den unendlich vielen Endsegmenten, die unendlich viele Zahlen als
    Indizes verbraucht haben, von denen also unendlich viele keinen
    unendlichen Inhalt mehr haben können.
    So eins gibt's nicht. Jedes hat einen endlichen Index.
    Dann ist auch ein endlicher Index und die darauf folgenden unendlich
    vielen Zahlen im Schnitt aller.
    Nein? Das Nachfolgersegment "verliert" genau diesen Index.

    Werden auf diese Weise alle Indizes in Endsegmenten verloren? Oder nicht?

    Gruß, WM

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  • From joes@21:1/5 to All on Wed Oct 16 18:05:44 2024
    Am Wed, 16 Oct 2024 19:23:35 +0200 schrieb WM:
    On 16.10.2024 19:17, joes wrote:
    Am Wed, 16 Oct 2024 18:49:52 +0200 schrieb WM:
    On 16.10.2024 17:33, joes wrote:
    Am Wed, 16 Oct 2024 17:16:47 +0200 schrieb WM:

    Bei den unendlich vielen Endsegmenten, die unendlich viele Zahlen
    als Indizes verbraucht haben, von denen also unendlich viele keinen
    unendlichen Inhalt mehr haben können.
    So eins gibt's nicht. Jedes hat einen endlichen Index.
    Dann ist auch ein endlicher Index und die darauf folgenden unendlich
    vielen Zahlen im Schnitt aller.
    Nein? Das Nachfolgersegment "verliert" genau diesen Index.
    Werden auf diese Weise alle Indizes in Endsegmenten verloren? Oder
    nicht?
    Na klar, es sind ja unendlich viele.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From Moebius@21:1/5 to All on Wed Oct 16 22:58:42 2024
    Am 16.10.2024 um 20:05 schrieb joes:
    Am Wed, 16 Oct 2024 19:23:35 +0200 schrieb WM:

    [Gehen] auf diese Weise alle Indizes [...] verloren? Oder nicht?

    Mückenheim, get lost!

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  • From Jim Burns@21:1/5 to All on Wed Oct 16 18:39:53 2024
    On 10/16/2024 12:55 PM, WM wrote:
    On 16.10.2024 17:34, Jim Burns wrote:
    On 10/16/2024 4:50 AM, WM wrote:
    On 16.10.2024 10:27, WM wrote:

    There is a general rule
    not open to further discussion:
    When doubling natural numbers
    we obtain natural numbers which
    have not been doubled.

    CORRECTION:
    When doubling natural numbers we obtain
    even numbers which have not been doubled.

    The set S of ordinals which
    are finite and for which
    their double is not finite
    doesn't hold first.S = 𝔊

    ⎛ Proof:
    ⎝ not( countable.to 2⋅(𝔊-1) ∧ not.countable.to 2⋅𝔊 )

    The set S of ordinals which
    are finite  and for which
    their double is not finite
    is empty.

    Maybe.

    Proofs don't need 'maybe's.

    Then not all natural numbers have been doubled.

    No natural number is
    the first to not.have a natural.number.double.

    When doubling natural numbers (finite ordinals)
    we obtain natural numbers.

    Maybe.

    When doubling all natural numbers
    we obtain only natural numbers.

    That is impossible.

    There is no first natural number from which we obtain
    (by doubling) anything not.a.natural.number.

    The only set of natural numbers with no first
    is the empty set.

    There is no ▒▒▒▒▒ natural number from which we obtain
    (by doubling) anything not.a.natural.number.

    In potential infinity
    we obtain more even natural numbers
    than have been doubled.
    In actual infinity
    we double ℕ and obtain
    neither ℕ or a subset of ℕ.

    There is a general rule not open to further discussion:
    The natural numbers ℕ equal the finite ordinals 𝕆ᶠⁱⁿ

    That is only possible in potential infinity.

    𝕆ᶠⁱⁿ is what we mean by ℕ

    They are "maybe" equal to precisely the extent
    that 1+1 is "maybe" 2

    But there the result is worthless.

    Unlike, for example, non.well.ordered ordinals,
    which you (WM) don't consider worthless.

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  • From Richard Damon@21:1/5 to All on Wed Oct 16 20:18:07 2024
    On 10/16/24 12:58 PM, WM wrote:
    On 16.10.2024 18:09, FromTheRafters wrote:
    WM formulated on Wednesday :
    On 16.10.2024 13:54, Richard Damon wrote:
    On 10/16/24 4:30 AM, WM wrote:

    There is a general rule not open to further discussion:
    When doubling natural numbers we obtain even numbers which have not
    been doubled.
    In potential infinity we obtain more even numbers than have been
    doubled.
    In actual infinity we double ℕ and obtain neither ℕ or a subset of ℕ.

    But that isn't actually a general rule,

    It is a general rule that doubling creates larger numbers.

    It is a general rule that doubling finite cardinal numbers creates
    larger finite cardinal numbers.

    Yes.

    In transfinite cardinalities Aleph_Zero times two is still Aleph_zero
    though.

    Here we talk only about natural numbers to be doubled.

    Regards, WM


    And thus you accepted that doubling ANY Natural Number gets you another
    Natural Number which would have been in that Actual set of the Actual
    Infinite set of Natural Numbers that has them all.

    The fact that it doesn't have a highest value just seems to blow your
    finite logic to smithereens.

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  • From Richard Damon@21:1/5 to Chris M. Thomasson on Wed Oct 16 20:18:11 2024
    On 10/16/24 1:53 PM, Chris M. Thomasson wrote:
    On 10/16/2024 4:54 AM, Richard Damon wrote:
    On 10/16/24 4:27 AM, WM wrote:
    On 15.10.2024 02:00, Jim Burns wrote:

    So, what is that perfectly reasonable explanation?

    There is a general rule not open to further discussion:
    When doubling natural numbers we obtain natural numbers which have
    not been doubled.
    In potential infinity we obtain more even natural numbers than have
    been doubled.
    In actual infinity we double ℕ and obtain neither ℕ or a subset of ℕ. >>>
    Regards, WM

    But that isn't actually a general rule, so you are just admitting that
    you aren't talking about the same Natural Numbers that everyone else
    is talking about, but some bastadization that is just fininte.

    NO natural number when doubled results in a value that wasn't a
    natural number all the time.

    Humm. Don't tell me WM thinks that 2 is not a natural because 1*2=2

    He seems to think there exists Natural Numbers, in the Actually Infinite
    set where they are exist for all time and never change, that when double
    get you to a number that wasn't in that set.

    But since the result IS a Natural Numbers, it must have been, or is
    "actual infinity" didn't actually contain *ALL* the Natural Numbers.


    ;^D



    Your problem is that your "Acutal Infinity" isn't actually Infinity,
    and like isn't actually "actually".


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  • From Jim Burns@21:1/5 to Ross Finlayson on Thu Oct 17 07:25:05 2024
    On 10/16/2024 9:05 PM, Ross Finlayson wrote:
    On 10/16/2024 11:06 AM, Chris M. Thomasson wrote:

    [...]

    and people who follow only one,
    ignorant the other,
    need to look up from their nose
    because it's leading them.

    To describe an indefinite one of
    an infinite domain is
    an infinite force.multiplier.

    But it needs to be
    only those in that domain,
    of that description.

    Loosen the restriction on the discussion,
    lose the force.multiplier.
    There isn't much useful to be said
    about things which _might or might not_
    be well.ordered. Etc.

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  • From WM@21:1/5 to FromTheRafters on Thu Oct 17 20:14:07 2024
    On 16.10.2024 21:48, FromTheRafters wrote:

    there is closure in the set of naturals for addition.

    There is a general rule not open to further discussion:
    When doubling natural numbers we obtain even numbers which have not been doubled.
    In potential infinity we obtain more even natural numbers than have been doubled. (Closure)
    In actual infinity we double ℕ and obtain neither ℕ or a subset of ℕ.

    Regards, WM

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  • From WM@21:1/5 to joes on Thu Oct 17 20:11:01 2024
    On 16.10.2024 20:05, joes wrote:
    Am Wed, 16 Oct 2024 19:23:35 +0200 schrieb WM:
    On 16.10.2024 19:17, joes wrote:
    Am Wed, 16 Oct 2024 18:49:52 +0200 schrieb WM:
    On 16.10.2024 17:33, joes wrote:
    Am Wed, 16 Oct 2024 17:16:47 +0200 schrieb WM:

    Bei den unendlich vielen Endsegmenten, die unendlich viele Zahlen
    als Indizes verbraucht haben, von denen also unendlich viele keinen >>>>>> unendlichen Inhalt mehr haben können.
    So eins gibt's nicht. Jedes hat einen endlichen Index.
    Dann ist auch ein endlicher Index und die darauf folgenden unendlich
    vielen Zahlen im Schnitt aller.
    Nein? Das Nachfolgersegment "verliert" genau diesen Index.
    Werden auf diese Weise alle Indizes in Endsegmenten verloren? Oder
    nicht?
    Na klar, es sind ja unendlich viele.

    Und die sind dann alle weg.

    Gruß, WM


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  • From WM@21:1/5 to Jim Burns on Thu Oct 17 20:22:12 2024
    On 17.10.2024 00:39, Jim Burns wrote:

    No natural number is
    the first to not.have a natural.number.double.

    True.


    When doubling all natural numbers
    we obtain only natural numbers.

    That is impossible.

    There is no first natural number from which we obtain
    (by doubling) anything not.a.natural.number.

    True.

    The only set of natural numbers with no first
    is the empty set..

    No, the set of dark numbers is another set without smallest element.

    There is no ▒▒▒▒▒ natural number from which we obtain
    (by doubling) anything not.a.natural.number.

    Correct is: There is no such _definable_ natnumber.

    There is a general rule not open to further discussion:
    When doubling natural numbers we obtain even numbers which have not been doubled.
    In potential infinity we obtain more even natural numbers than have been doubled.
    In actual infinity we double ℕ and obtain neither ℕ or a subset of ℕ.

    Regards WM

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  • From Alan Mackenzie@21:1/5 to wolfgang.mueckenheim@tha.de on Thu Oct 17 18:39:02 2024
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 17.10.2024 00:39, Jim Burns wrote:

    No natural number is
    the first to not.have a natural.number.double.

    True.

    When doubling all natural numbers
    we obtain only natural numbers.

    That is impossible.

    There is no first natural number from which we obtain
    (by doubling) anything not.a.natural.number.

    True.

    The only set of natural numbers with no first
    is the empty set..

    No, the set of dark numbers is another set without smallest element.

    No. It is the empty set (which I proved many posts ago). All empty sets
    are the same - there is only one of them.

    There is no ▒▒▒▒▒ natural number from which we obtain
    (by doubling) anything not.a.natural.number.

    Correct is: There is no such _definable_ natnumber.

    That is the only sort of natural number there is.

    There is a general rule not open to further discussion:
    When doubling natural numbers we obtain even numbers which have not been doubled.
    In potential infinity we obtain more even natural numbers than have been doubled.
    In actual infinity we double ℕ and obtain neither ℕ or a subset of ℕ.

    All of these "rules" are so loosely and ambiguously formulated, that they
    don't actually say anything at all - they are meaningless.

    Regards WM

    --
    Alan Mackenzie (Nuremberg, Germany).

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  • From Moebius@21:1/5 to All on Thu Oct 17 20:44:51 2024
    Am 17.10.2024 um 20:39 schrieb Alan Mackenzie:

    In actual infinity we double ℕ and obtain neither ℕ or a subset of ℕ.

    All of these "rules" are so loosely and ambiguously formulated, that they don't actually say anything at all - they are meaningless.

    Not so. He claims that (in the context of o u r math/set theory)

    {2n : n e IN} c IN

    does NOT hold! :-)

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  • From WM@21:1/5 to Richard Damon on Thu Oct 17 20:46:03 2024
    On 17.10.2024 02:18, Richard Damon wrote:
    On 10/16/24 11:20 AM, WM wrote:
    On 16.10.2024 13:54, Richard Damon wrote:
    On 10/16/24 4:30 AM, WM wrote:

    There is a general rule not open to further discussion:
    When doubling natural numbers we obtain even numbers which have not
    been doubled.
    In potential infinity we obtain more even natural numbers than have
    been doubled.
    In actual infinity we double ℕ and obtain neither ℕ or a subset of ℕ.

    But that isn't actually a general rule,

    It is a general rule that doubling creates larger numbers.

    Yes, but none get larger than the domain of the Natural Numbers, the set
    we started from.

    When doubling natural numbers we obtain even numbers which have not been doubled.

    This just shows the unusual behavior of infinite sets.

    2n > n is always true, in finite and in infinite sets.

    you assume that the actual
    infinity is finite

    No, it is simply complete. Therefore not for all n 2n can be a natnumber.

    Regards, WM

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  • From WM@21:1/5 to Alan Mackenzie on Thu Oct 17 20:52:47 2024
    On 17.10.2024 20:39, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    There is a general rule not open to further discussion:
    When doubling natural numbers we obtain even numbers which have not been
    doubled.
    In potential infinity we obtain more even natural numbers than have been
    doubled.
    In actual infinity we double ℕ and obtain neither ℕ or a subset of ℕ.

    All of these "rules" are so loosely and ambiguously formulated, that they don't actually say anything at all - they are meaningless.

    These rules are basic. You don't understand them. Perhaps too much at
    once. Start with 2n > n for every natural number. (0 is not a
    natnumber.) If you can't understand or don't believe, then there is no
    common basis for discussion.


    Regards WM


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  • From Moebius@21:1/5 to All on Thu Oct 17 22:29:36 2024
    Am 17.10.2024 um 22:21 schrieb Chris M. Thomasson:

    [...] there is definitely _both_ the
    "asymptotic density" AND the "countable cardinality".

    Ross is right here.

    if you double any natural number, you get another natural number.

    Of course. WM is deluded.

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  • From Alan Mackenzie@21:1/5 to wolfgang.mueckenheim@tha.de on Thu Oct 17 21:22:23 2024
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 17.10.2024 20:39, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    There is a general rule not open to further discussion:
    When doubling natural numbers we obtain even numbers which have not been >>> doubled.
    In potential infinity we obtain more even natural numbers than have been >>> doubled.
    In actual infinity we double ℕ and obtain neither ℕ or a subset of ℕ.

    All of these "rules" are so loosely and ambiguously formulated, that they
    don't actually say anything at all - they are meaningless.

    These rules are basic.

    They are not. They're loosely worded and ambiguous. They do not form
    the basis of any further mathematics.

    You don't understand them. Perhaps too much at once.

    Now we have an ad hominem. I understand full well how meaningless they
    are.

    Start with 2n > n for every natural number. (0 is not a natnumber.)

    Depends on the exact formulation. 0 is frequently regarded as a natural number. It makes it easier to build, for example, rings on top of it.

    But other than zero, 2n > n for every natural number, yes. In
    particular, for every natural number n, 2n is also a natural number.

    If you can't understand or don't believe, then there is no common basis
    for discussion.

    It's not a matter of belief. It's a matter of correct and rigorous mathematics.

    Regards WM


    --
    Alan Mackenzie (Nuremberg, Germany).

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  • From Moebius@21:1/5 to All on Thu Oct 17 23:30:31 2024
    Am 17.10.2024 um 23:22 schrieb Alan Mackenzie:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    If you can't understand or don't believe, then there is no common basis
    for discussion.

    It's not a matter of belief. It's a matter of correct and rigorous mathematics.

    Sure.

    Hint: "there is no common basis for discussion".

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  • From Jim Burns@21:1/5 to All on Thu Oct 17 18:34:45 2024
    On 10/17/2024 2:22 PM, WM wrote:
    On 17.10.2024 00:39, Jim Burns wrote:

    No natural number is
    the first to not.have a natural.number.double.

    True.

    What we mean by 'natural number' is
    'finite ordinal'.

    ⎛ Each ordinal ξ, finite or not,
    ⎜ has successor ξ+1 = ξ∪{ξ}

    ⎜ Each set S of ordinals, finite or not,
    ⎜ holds first.S or is {}

    ⎜ Each _finite_ ordinal k
    ⎜ has predecessor k-1: (k-1)+1 = k or is 0
    ⎜ and each prior ordinal j < k
    ⎝ has predecessor j-1: (j-1)+1 = j or is 0

    When doubling all natural numbers
    we obtain only natural numbers.

    That is impossible.

    There is no first natural number from which we obtain
    (by doubling) anything not.a.natural.number.

    True.

    The only set of natural numbers with no first
    is the empty set..

    No, the set of dark numbers is
    another set without smallest element.

    A nonempty set without a first element
    is not a set of only finite ordinals.

    What we mean by 'natural number' is
    'finite ordinal'.

    There is no ▒▒▒▒▒ natural number from which we obtain
    (by doubling) anything not.a.natural.number.

    Correct is:
    There is no such _definable_ natnumber.

    There are sets of natural numbers with first elements
    and there is the empty set.

    The first.element.free set of
    natural numbers from which we obtain
    (by doubling) anything not.a.natural.number
    is not the first option.

    That set is the second option: the empty set.

    It is empty.
    There is no ▒▒▒▒▒ natural number from which we obtain
    (by doubling) anything not.a.natural.number.

    There is a general rule not open to further discussion:

    ⎛ Things which aren't natural numbers
    ⎝ aren't called natural numbers.

    What you (WM) are doing is like
    'proving' that transcendental integers exist
    by declaring a rule "not open to further discussion"
    that π is an integer.

    When doubling natural numbers we obtain
    even numbers which have not been doubled.
    In potential infinity we obtain
    more even natural numbers than have been doubled.
    In actual infinity we double ℕ and obtain
    neither ℕ or a subset of ℕ.

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  • From Richard Damon@21:1/5 to All on Thu Oct 17 21:26:14 2024
    On 10/17/24 2:46 PM, WM wrote:
    On 17.10.2024 02:18, Richard Damon wrote:
    On 10/16/24 11:20 AM, WM wrote:
    On 16.10.2024 13:54, Richard Damon wrote:
    On 10/16/24 4:30 AM, WM wrote:

    There is a general rule not open to further discussion:
    When doubling natural numbers we obtain even numbers which have not
    been doubled.
    In potential infinity we obtain more even natural numbers than have
    been doubled.
    In actual infinity we double ℕ and obtain neither ℕ or a subset of ℕ.

    But that isn't actually a general rule,

    It is a general rule that doubling creates larger numbers.

    Yes, but none get larger than the domain of the Natural Numbers, the
    set we started from.

    When doubling natural numbers we obtain even numbers which have not been doubled.

    Then your "Actual Infinity" wasn't actually infinte.

    As it must contain *ALL* the Natural Numbers to be that set.

    Sorry, you are just proving that your logic is just a lie as your
    "infinite" is just finite, because you don't know what you are talking
    about.


    This just shows the unusual behavior of infinite sets.

    2n > n is always true, in finite and in infinite sets.

    In FINITE or ORDINAL systems, and there 2n will be in the same actually infinite set as n.

    In Infinte Cardinal spaces (like Aleph_0 is in) 2n == n


    you assume that the actual infinity is finite

    No, it is simply complete. Therefore not for all n 2n can be a natnumber.

    And if it *IS* complete, it contains every Natural Number, and thus
    since 2*n IS a Natural Number it is in the complere set of Natural
    Numbers which we started from.

    Trying to cal them "natnumbers" is just a ruse to hid your lies.

    Your concept of "Actual Infinity" is actually infinite, and you are just showing that you are just a stupid liar that doesn't understand what he
    talks about,


    Regards, WM


    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Fri Oct 18 08:08:00 2024
    Am Thu, 17 Oct 2024 20:22:12 +0200 schrieb WM:
    On 17.10.2024 00:39, Jim Burns wrote:

    No natural number is the first to not.have a natural.number.double.
    True.
    Aha!

    When doubling all natural numbers we obtain only natural numbers.
    That is impossible.
    Contradiction to your agreement below.
    There is no first natural number from which we obtain (by doubling)
    anything not.a.natural.number.
    True.
    Thus, your "dark" numbers can't be natural.

    The only set of natural numbers with no first is the empty set..
    No, the set of dark numbers is another set without smallest element.
    You mean, like the unit fractions?

    There is no ▒▒▒▒▒ natural number from which we obtain (by doubling)
    anything not.a.natural.number.
    [spam snipped]

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Fri Oct 18 08:05:47 2024
    Am Thu, 17 Oct 2024 20:14:07 +0200 schrieb WM:
    On 16.10.2024 21:48, FromTheRafters wrote:

    there is closure in the set of naturals for addition.
    In potential infinity we obtain more even natural numbers than have been doubled. (Closure)
    That is not what closure means: that you always stay in the same set
    no matter what you do. You especially don't obtain more numbers
    (larger, sure).

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to Ross Finlayson on Fri Oct 18 08:26:54 2024
    On 10/17/2024 2:20 PM, Ross Finlayson wrote:
    On 10/17/2024 04:25 AM, Jim Burns wrote:

    Loosen the restriction on the discussion,
    lose the force.multiplier.
    There isn't much useful to be said
    about things which _might or might not_
    be well.ordered. Etc.

    It is a fact:
    that in number theory,
    according to number theorists,
    that there's a descriptive aspect of numbers,
    and it's "asymptotic density",
    and according to "asymptotic density",
    half of the integers are even.

    Whether it's SETS of numbers
    or the sets of NUMBERS, in
    number theory, the set of integers,
    has associated with the set of even integers,
    a relative size relation, of: one half.

    So, if you don't recognize that as a fact,
    then, you're not talking about numbers.

    It is a fact
    that
    ω is the first ordinal after all finites,
    that
    ordinals are well.ordered and successored,
    that
    finite ordinals k are predecessored or 0
    with each prior j < k predecessored or 0

    There is no ω
    such that the numbers are
    evenly.spaced between 0 and ω
    because
    that describes a finite ordinal, not ω

    So, if you don't recognize that as a fact,
    then, you're not talking about ω

    Numbers the arithmetization, ...,
    which is a most usual first thing in
    all manners of descriptive set theory
    as would-be relevant.

    From an arithmetization:
    all the properties
    of integers so follow,
    and one of them is "asymptotic density".

    Half of the integers are even.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Fri Oct 18 20:52:15 2024
    Am 18.10.2024 um 20:36 schrieb Chris M. Thomasson:

    It seems as if his brain melts when he thinks of multiple any natural
    number by two... Dark thought cross his mind... ;^D

    Well, WM "comprehends" the infinitely many natural numbers (and the
    numbers beyond) the following way (I'd say):

    1, 2, 3, ..., n (note: if n is very large ... dusk sets in), ... (the
    dark realm)

    So if you multiply a very larg n e IN with 2 the result may belong to
    the dark realm, and who can say if those darkies are natural numbers or
    not?!

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Fri Oct 18 20:58:48 2024
    Am 18.10.2024 um 20:36 schrieb Chris M. Thomasson:

    It seems as if his brain melts when he thinks of multiple any natural
    number by two... Dark thought cross his mind... ;^D

    Well, WM "comprehends" the infinitely many natural numbers (and the
    numbers beyond) the following way (I'd say):

    1, 2, 3, ..., n (note: if n is very large ... dusk sets in), ... (the
    dark realm)

    So if you multiply a very large n e IN by 2 the result may belong to the
    dark realm, and who can say if those darkies are natural numbers or not?!

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to Chris M. Thomasson on Fri Oct 18 16:11:27 2024
    On 10/18/2024 2:13 PM, Chris M. Thomasson wrote:
    On 9/16/2024 2:38 PM, Jim Burns wrote:
    On 9/16/2024 4:15 PM, Chris M. Thomasson wrote:

    WM is a strange one.
    If no point is between them,
    then they are the same.

    If no point is between different points,
    then the points aren't in the complete line.

    If p0 and p1 are the same point then p1 - p0 is zero.

    Say:

    p0 = (1, 2, 3)
    p1 = (1, 2, 3)

    pdif = p1 - p0

    pdif would be (0, 0, 0)

    See?

    I wouldn't choose to say that 0 is between 0 and 0
    If necessary,
    I would correct what I'd said so that
    it could not be taken to mean that.

    But that isn't something that should stop us from
    saying what we want to say about 0 and other points.

    ----
    On 9/15/2024 3:47 PM, WM wrote:
    On 14.09.2024 20:35, joes wrote:
    Am Sat, 14 Sep 2024 16:01:02 +0200 schrieb WM:

    Two points are next to each other
    means that
    no point is between them.

    Which is the case for no two (different) reals.

    For no two different visible numbers,
    to be precise.

    I would have thought that being.between
    had nothing to do with being.dark or being.visible.

    WM corrects me: It matters in some way.

    How does it matter?
    My need to ask is all the proof WM needs
    that I should not be told how it matters,
    proof that I am not one of the Fair Folk,
    able to spin WM's straw into gold;

    _not at all_ because WM has no idea
    what WM is talking about, and
    accomplishing more than making math.like noises
    is beyond his reach.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Sat Oct 19 00:16:11 2024
    Am 18.10.2024 um 22:48 schrieb Chris M. Thomasson:
    On 10/18/2024 11:58 AM, Moebius wrote:
    Am 18.10.2024 um 20:36 schrieb Chris M. Thomasson:

    It seems as if his brain melts when he thinks of multiple any natural
    number by two... Dark thought cross his mind... ;^D

    Well, WM "comprehends" the infinitely many natural numbers (and the
    numbers beyond) the following way (I'd say):

    1, 2, 3, ..., n (note: if n is very large ... dusk sets in), ... (the
    dark realm)

    So if you multiply a very large n e IN by 2 the result may belong to
    the dark realm, and who can say if those darkies are natural numbers
    or not?!

    Hummm... I wonder if ((42424242^69696969) * 2) makes the following song
    cross WM's mind:

    (You Don't Know the Power of the Dark Side Music Video) https://youtu.be/HEYrRNMr2kg

    Horrible.

    Gorgio Moroder did that 45 jears ago. And better.

    https://www.youtube.com/watch?v=2tMnde9fjBg

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Sat Oct 19 00:25:29 2024
    Am 19.10.2024 um 00:16 schrieb Moebius:
    Am 18.10.2024 um 22:48 schrieb Chris M. Thomasson:

    42424242^69696969) * 2

    Btw. I'm quite sure that this number belongs to the dark side!

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Sat Oct 19 00:26:51 2024
    Am 19.10.2024 um 00:16 schrieb Moebius:
    Am 18.10.2024 um 22:48 schrieb Chris M. Thomasson:

    (42424242^69696969) * 2

    Btw. I'm quite sure that this number belongs to the dark side!

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to Ross Finlayson on Fri Oct 18 18:53:23 2024
    On 10/18/2024 4:50 PM, Ross Finlayson wrote:
    On 10/18/2024 02:05 AM, FromTheRafters wrote:

    [...]

    I know that
    Burns is a platonist at least one day each week,
    so, hope and a bottle of ketchup isn't a hamburger,
    yet at least there's hope.

    Please recall that I am not a working mathematician.
    I am a dabbler in mathematics.

    If I recall correctly,
    there is a quote approximately to the effect that
    Platonism is what a working mathematician contracts
    when they concentrate too deeply on doing mathematics
    to consider the nature of mathematics itself.

    On their day off (Sunday) they find
    some temporary relief from their Platonism,
    relief which takes the appearance of formalism.


    When I try to justify mathematics which
    I have been taking for granted for decades
    to fellow dabblers who have NOT
    taken all that for granted,
    my offered justification often
    takes the appearance of formalism.

    Perhaps you wonder why I don't just bring
    my fellow dabblers on a quick trip
    to Plato's Realm of Forms, and _show_ them.
    I confess that I haven't learned how to do that.

    Claims, though.
    Painted with pixels or minerals on a cave wall.
    And finite sequences of claims.
    And demonstrably not.first.false claims.
    And finite sequences of
    demonstrably not.first.false claims.
    THESE I CAN show.

    That is what makes me a formalist,
    to that vague degree to which I am a formalist.

    If, for some reason,
    you would like me to be a Platonist,
    even while I pay attention to the question,
    teaching me to travel to Plato's Realm of Forms
    would go a long way toward that.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Sat Oct 19 01:56:35 2024
    Am 19.10.2024 um 01:48 schrieb Chris M. Thomasson:
    On 10/18/2024 3:26 PM, Moebius wrote:
    Am 19.10.2024 um 00:16 schrieb Moebius:
    Am 18.10.2024 um 22:48 schrieb Chris M. Thomasson:

    (42424242^69696969) * 2

    Btw. I'm quite sure that this number belongs to the dark side!

    Or, numbers just for men... 69?

    :-)

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Sat Oct 19 01:58:37 2024
    Am 19.10.2024 um 01:50 schrieb Chris M. Thomasson:
    On 10/18/2024 3:16 PM, Moebius wrote:
    Am 18.10.2024 um 22:48 schrieb Chris M. Thomasson:

    Hummm... I wonder if ((42424242^69696969) * 2) makes the following
    song cross WM's mind:

    (You Don't Know the Power of the Dark Side Music Video)
    https://youtu.be/HEYrRNMr2kg

    Horrible.

    Gorgio Moroder did that 45 jears ago. And better.

    https://www.youtube.com/watch?v=2tMnde9fjBg

    Iirc, he did this one as well:

    https://youtu.be/x1afn71-0sI

    https://en.wikipedia.org/wiki/The_NeverEnding_Story_(song)

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Sat Oct 19 02:12:29 2024
    Am 19.10.2024 um 02:09 schrieb Chris M. Thomasson:
    On 10/18/2024 3:16 PM, Moebius wrote:
    Am 18.10.2024 um 22:48 schrieb Chris M. Thomasson:
    On 10/18/2024 11:58 AM, Moebius wrote:
    Am 18.10.2024 um 20:36 schrieb Chris M. Thomasson:

    It seems as if his brain melts when he thinks of multiple any
    natural number by two... Dark thought cross his mind... ;^D

    Well, WM "comprehends" the infinitely many natural numbers (and the
    numbers beyond) the following way (I'd say):

    1, 2, 3, ..., n (note: if n is very large ... dusk sets in), ...
    (the dark realm)

    So if you multiply a very large n e IN by 2 the result may belong to
    the dark realm, and who can say if those darkies are natural numbers
    or not?!

    Hummm... I wonder if ((42424242^69696969) * 2) makes the following
    song cross WM's mind:

    (You Don't Know the Power of the Dark Side Music Video)
    https://youtu.be/HEYrRNMr2kg

    Horrible.

    Gorgio Moroder did that 45 jears ago. And better.

    https://www.youtube.com/watch?v=2tMnde9fjBg

    WM needs to break free from the TrollShell 2000.0402 bot anomaly very pre-alpha .012 ago...

    https://youtu.be/zuo0YOiPPlk?list=RDMM

    I guess, I'm to old for that shit. Sorry.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Sat Oct 19 02:33:35 2024
    Am 19.10.2024 um 02:30 schrieb Chris M. Thomasson:
    On 10/18/2024 5:29 PM, Chris M. Thomasson wrote:
    On 10/18/2024 5:12 PM, Moebius wrote:
    Am 19.10.2024 um 02:09 schrieb Chris M. Thomasson:
    On 10/18/2024 3:16 PM, Moebius wrote:
    Am 18.10.2024 um 22:48 schrieb Chris M. Thomasson:
    On 10/18/2024 11:58 AM, Moebius wrote:
    Am 18.10.2024 um 20:36 schrieb Chris M. Thomasson:

    It seems as if his brain melts when he thinks of multiple any
    natural number by two... Dark thought cross his mind... ;^D

    Well, WM "comprehends" the infinitely many natural numbers (and
    the numbers beyond) the following way (I'd say):

    1, 2, 3, ..., n (note: if n is very large ... dusk sets in), ... >>>>>>> (the dark realm)

    So if you multiply a very large n e IN by 2 the result may belong >>>>>>> to the dark realm, and who can say if those darkies are natural
    numbers or not?!

    Hummm... I wonder if ((42424242^69696969) * 2) makes the following >>>>>> song cross WM's mind:

    (You Don't Know the Power of the Dark Side Music Video)
    https://youtu.be/HEYrRNMr2kg

    Horrible.

    Gorgio Moroder did that 45 jears ago. And better.

    https://www.youtube.com/watch?v=2tMnde9fjBg

    WM needs to break free from the TrollShell 2000.0402 bot anomaly
    very pre-alpha .012 ago...

    https://youtu.be/zuo0YOiPPlk?list=RDMM

    I guess, I'm to old for that shit. Sorry.

    :^D Shit happens Man.

    I met the one woman at a casino who was around 54 years old. That's what
    she told me for some reason. She was young at heart drinking and
    partying and shit! Fun.

    Ha ha ha! You made my day, man! :-)

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Sat Oct 19 02:32:33 2024
    Am 19.10.2024 um 02:30 schrieb Chris M. Thomasson:
    On 10/18/2024 5:29 PM, Chris M. Thomasson wrote:
    On 10/18/2024 5:12 PM, Moebius wrote:
    Am 19.10.2024 um 02:09 schrieb Chris M. Thomasson:
    On 10/18/2024 3:16 PM, Moebius wrote:
    Am 18.10.2024 um 22:48 schrieb Chris M. Thomasson:
    On 10/18/2024 11:58 AM, Moebius wrote:
    Am 18.10.2024 um 20:36 schrieb Chris M. Thomasson:

    It seems as if his brain melts when he thinks of multiple any
    natural number by two... Dark thought cross his mind... ;^D

    Well, WM "comprehends" the infinitely many natural numbers (and
    the numbers beyond) the following way (I'd say):

    1, 2, 3, ..., n (note: if n is very large ... dusk sets in), ... >>>>>>> (the dark realm)

    So if you multiply a very large n e IN by 2 the result may belong >>>>>>> to the dark realm, and who can say if those darkies are natural
    numbers or not?!

    Hummm... I wonder if ((42424242^69696969) * 2) makes the following >>>>>> song cross WM's mind:

    (You Don't Know the Power of the Dark Side Music Video)
    https://youtu.be/HEYrRNMr2kg

    Horrible.

    Gorgio Moroder did that 45 jears ago. And better.

    https://www.youtube.com/watch?v=2tMnde9fjBg

    WM needs to break free from the TrollShell 2000.0402 bot anomaly
    very pre-alpha .012 ago...

    https://youtu.be/zuo0YOiPPlk?list=RDMM

    I guess, I'm to old for that shit. Sorry.

    :^D Shit happens Man.

    I met the one woman at a casino who was around 54 years old. That's what
    she told me for some reason. She was young at heart drinking and
    partying and shit! Fun.

    Ha ha ha. You made my day, man! :-)

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Sat Oct 19 02:39:00 2024
    Am 19.10.2024 um 02:37 schrieb Chris M. Thomasson:
    On 10/18/2024 5:33 PM, Moebius wrote:
    Am 19.10.2024 um 02:30 schrieb Chris M. Thomasson:
    On 10/18/2024 5:29 PM, Chris M. Thomasson wrote:
    On 10/18/2024 5:12 PM, Moebius wrote:
    Am 19.10.2024 um 02:09 schrieb Chris M. Thomasson:
    On 10/18/2024 3:16 PM, Moebius wrote:
    Am 18.10.2024 um 22:48 schrieb Chris M. Thomasson:
    On 10/18/2024 11:58 AM, Moebius wrote:
    Am 18.10.2024 um 20:36 schrieb Chris M. Thomasson:

    It seems as if his brain melts when he thinks of multiple any >>>>>>>>>> natural number by two... Dark thought cross his mind... ;^D >>>>>>>>>
    Well, WM "comprehends" the infinitely many natural numbers (and >>>>>>>>> the numbers beyond) the following way (I'd say):

    1, 2, 3, ..., n (note: if n is very large ... dusk sets
    in), ... (the dark realm)

    So if you multiply a very large n e IN by 2 the result may
    belong to the dark realm, and who can say if those darkies are >>>>>>>>> natural numbers or not?!

    Hummm... I wonder if ((42424242^69696969) * 2) makes the
    following song cross WM's mind:

    (You Don't Know the Power of the Dark Side Music Video)
    https://youtu.be/HEYrRNMr2kg

    Horrible.

    Gorgio Moroder did that 45 jears ago. And better.

    https://www.youtube.com/watch?v=2tMnde9fjBg

    WM needs to break free from the TrollShell 2000.0402 bot anomaly
    very pre-alpha .012 ago...

    https://youtu.be/zuo0YOiPPlk?list=RDMM

    I guess, I'm to old for that shit. Sorry.

    :^D Shit happens Man.

    I met the one woman at a casino who was around 54 years old. That's
    what she told me for some reason. She was young at heart drinking and
    partying and shit! Fun.

    Ha ha ha! You made my day, man! :-)

    I will be 47 this year! December. Well, 54 and 47 are not that far off,
    so to speak! wow. Wow, how time goes by... I wonder how old WM is?

    See: https://de.wikipedia.org/wiki/Wolfgang_M%C3%BCckenheim

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Sat Oct 19 02:48:13 2024
    Am 19.10.2024 um 02:40 schrieb Chris M. Thomasson:
    On 10/18/2024 5:39 PM, Moebius wrote:
    Am 19.10.2024 um 02:37 schrieb Chris M. Thomasson:
    On 10/18/2024 5:33 PM, Moebius wrote:
    Am 19.10.2024 um 02:30 schrieb Chris M. Thomasson:
    On 10/18/2024 5:29 PM, Chris M. Thomasson wrote:
    On 10/18/2024 5:12 PM, Moebius wrote:
    Am 19.10.2024 um 02:09 schrieb Chris M. Thomasson:
    On 10/18/2024 3:16 PM, Moebius wrote:
    Am 18.10.2024 um 22:48 schrieb Chris M. Thomasson:
    On 10/18/2024 11:58 AM, Moebius wrote:
    Am 18.10.2024 um 20:36 schrieb Chris M. Thomasson:

    It seems as if his brain melts when he thinks of multiple >>>>>>>>>>>> any natural number by two... Dark thought cross his mind... ;^D >>>>>>>>>>>
    Well, WM "comprehends" the infinitely many natural numbers >>>>>>>>>>> (and the numbers beyond) the following way (I'd say):

    1, 2, 3, ..., n (note: if n is very large ... dusk sets
    in), ... (the dark realm)

    So if you multiply a very large n e IN by 2 the result may >>>>>>>>>>> belong to the dark realm, and who can say if those darkies >>>>>>>>>>> are natural numbers or not?!

    Hummm... I wonder if ((42424242^69696969) * 2) makes the
    following song cross WM's mind:

    (You Don't Know the Power of the Dark Side Music Video)
    https://youtu.be/HEYrRNMr2kg

    Horrible.

    Gorgio Moroder did that 45 jears ago. And better.

    https://www.youtube.com/watch?v=2tMnde9fjBg

    WM needs to break free from the TrollShell 2000.0402 bot anomaly >>>>>>>> very pre-alpha .012 ago...

    https://youtu.be/zuo0YOiPPlk?list=RDMM

    I guess, I'm to old for that shit. Sorry.

    :^D Shit happens Man.

    I met the one woman at a casino who was around 54 years old. That's
    what she told me for some reason. She was young at heart drinking
    and partying and shit! Fun.

    Ha ha ha! You made my day, man! :-)

    I will be 47 this year! December. Well, 54 and 47 are not that far
    off, so to speak! wow. Wow, how time goes by... I wonder how old WM is?

    See: https://de.wikipedia.org/wiki/Wolfgang_M%C3%BCckenheim

    Wow! I was born in 1977.

    See? WM and I are old men, man.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Sat Oct 19 02:51:58 2024
    Am 19.10.2024 um 02:42 schrieb Chris M. Thomasson:

    " Mückenheim writes in the foreword to his book "Mathematics for the
    First Semesters": "With the finiteness of every set, the set of all
    digits of a number is also finite."

    Sounds like a troll a hyper-ultra finite mindfuck would think for sure!

    Thanks for the info, Moebius.

    N/p. WM is one of the rather rare "academic cranks".

    Of course (!), NOT a mathematician by profession.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Sat Oct 19 02:54:14 2024
    Am 19.10.2024 um 02:49 schrieb Chris M. Thomasson:

    I am right there, as time ticks by... Does WM will get darker as time
    ticks? oh shit. UltraHyperFinite... ;^)

    I guess, it's called /dementia/. :-/

    (Poor man.)

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Sat Oct 19 02:57:03 2024
    Am 19.10.2024 um 02:52 schrieb Chris M. Thomasson:
    On 10/18/2024 5:51 PM, Moebius wrote:

    WM is one of the rather rare [case of] "academic cranks".

    Of course (!), NOT a mathematician by profession.

    Strange to me, for I thought WM was a most certifiable a troll, indeed.

    No, he's a physicist "gone cracy".

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Sat Oct 19 03:03:00 2024
    Am 19.10.2024 um 02:58 schrieb Chris M. Thomasson:
    On 10/18/2024 5:57 PM, Moebius wrote:
    Am 19.10.2024 um 02:52 schrieb Chris M. Thomasson:
    On 10/18/2024 5:51 PM, Moebius wrote:

    WM is one of the rather rare [case of] "academic cranks".

    Of course (!), NOT a mathematician by profession.

    Strange to me, for I thought WM was a most certifiable a troll, indeed.

    No, he's a physicist "gone cracy".

    Damn. At least he is way smarter than AP, for sure. Imvho...

    Not sure about that. Do you know AP's BIO? (I guess not.)

    A very sad ... case. [...]

    Please hear: https://www.youtube.com/watch?v=Jox5GBUAMUY

    (Please do it.)

    --- SoupGate-Win32 v1.05
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  • From Moebius@21:1/5 to All on Sat Oct 19 03:09:26 2024
    Am 19.10.2024 um 02:58 schrieb Chris M. Thomasson:
    On 10/18/2024 5:57 PM, Moebius wrote:
    Am 19.10.2024 um 02:55 schrieb Chris M. Thomasson:
    On 10/18/2024 5:54 PM, Moebius wrote:
    Am 19.10.2024 um 02:49 schrieb Chris M. Thomasson:

    I am right there, as time ticks by... Does WM will get darker as
    time ticks? oh shit. UltraHyperFinite... ;^)

    I guess, it's called /dementia/. :-/

    (Poor man.)

    DAMN!!!!!!!! That sucks. So far, I feel fine.

    Same, same. But who knwow? : :-P


    Well, my typos are grand. Treating usenet like a quick message medium
    from time to time. That is a sign! ;^o

    I hope not! :-P

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  • From Moebius@21:1/5 to All on Sat Oct 19 03:15:19 2024
    Am 19.10.2024 um 03:00 schrieb Chris M. Thomasson:
    On 10/18/2024 5:58 PM, Chris M. Thomasson wrote:
    On 10/18/2024 5:57 PM, Moebius wrote:
    Am 19.10.2024 um 02:52 schrieb Chris M. Thomasson:
    On 10/18/2024 5:51 PM, Moebius wrote:

    WM is one of the rather rare [case of] "academic cranks".

    Of course (!), NOT a mathematician by profession.

    Strange to me, for I thought WM was a most certifiable a troll, indeed. >>>
    No, he's a physicist "gone cracy".

    Can a HyperUltra Finite <etc>

    Actually, there is a "line of thought" which is called "Ultrafinitism".
    But (as far as I know) no "real" math is grounded on that approach.

    See: https://en.wikipedia.org/wiki/Ultrafinitism

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  • From Moebius@21:1/5 to All on Sat Oct 19 03:18:11 2024
    Am 19.10.2024 um 03:10 schrieb Chris M. Thomasson:

    Iirc, AP was a dishwasher or something?

    Yes, but (long) after hie mental breakdown. :-(

    Again: I guess, you don't know his bio. :-/

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  • From Moebius@21:1/5 to All on Sat Oct 19 03:21:03 2024
    Am 19.10.2024 um 03:13 schrieb Chris M. Thomasson:

    Still AP inspired me to create this: [...]

    See?!

    Please don't compare AP with WM.

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  • From Moebius@21:1/5 to All on Sat Oct 19 03:28:53 2024
    Am 19.10.2024 um 03:20 schrieb Chris M. Thomasson:

    though I have conversed with AP quite a bit on this group. Damn.

    You have conversed with the remnants of his mind. :-(

    --- SoupGate-Win32 v1.05
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  • From Moebius@21:1/5 to All on Sat Oct 19 03:25:01 2024
    Am 19.10.2024 um 03:22 schrieb Chris M. Thomasson:
    On 10/18/2024 6:21 PM, Moebius wrote:
    Am 19.10.2024 um 03:13 schrieb Chris M. Thomasson:

    Still AP inspired me to create this: [...]

    See?!

    Please don't compare AP with WM.

    Yeah. Sorry about that. Sorry to AP! Please try to forgive me.

    N/p. Thinking about AP makes me very sad (in contrast to WM).

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  • From Moebius@21:1/5 to All on Sat Oct 19 03:35:33 2024
    ...

    I thought WM was a most certifiable a troll, indeed

    No, he's a physicist "gone cracy".

    Such people are (rightly) called /cranks/.

    See: https://en.wikipedia.org/wiki/Mathematical_Cranks

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  • From WM@21:1/5 to Alan Mackenzie on Sat Oct 19 10:10:52 2024
    On 17.10.2024 23:22, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    If you can't understand or don't believe, then there is no common basis
    for discussion.

    It's not a matter of belief. It's a matter of correct and rigorous mathematics.

    When doubling natural numbers we obtain even numbers which have not been doubled.

    This is a sentence that every mathematician can understand. It is true
    because the interval covered by the doubled numbers is twice as large as
    the interval covered by the numbers t be doubled.

    Regards, WM

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  • From WM@21:1/5 to FromTheRafters on Sat Oct 19 09:59:07 2024
    On 17.10.2024 21:39, FromTheRafters wrote:
    Anyway, the size of these infinite sets
    are equal despite outpacing and asymtotic density considerations.

    The even numbers and the natural numbers have the relative sizes

    |{2, 4, 6, ..., 2n}|/|{1, 2, 3, 4, 5, 6, ..., 2n} = 1/2

    for every n. Only real fools can believe that the relative size changes
    to 1 for all numbers |E|/|ℕ| = 1. Cantor knew this. Therefore
    cardinality is not true for the complete sets but only for potentially
    infinite initial segments.

    Regards, WM

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  • From WM@21:1/5 to Jim Burns on Sat Oct 19 10:28:39 2024
    On 18.10.2024 14:26, Jim Burns wrote:

    There is no ω
    such that the numbers are
    evenly.spaced between 0 and ω
    because
    that describes a finite ordinal, not ω

    What is immediately before ω if not finite numbers?

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Jim Burns on Sat Oct 19 10:16:21 2024
    On 18.10.2024 00:34, Jim Burns wrote:
    On 10/17/2024 2:22 PM, WM wrote:

    A nonempty set without a first element
    is not a set of only finite ordinals.

    The set of dark numbers contains only natural numbers.
    What you call a "set of finite ordinals" is not a set but a potentially infinite collection.

    Proof: If you double all your finite ordinals you obtain only finite
    ordinals again, although the covered interval is twice as large as the
    original interval covered by "all" your finite ordinals.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Sat Oct 19 10:23:05 2024
    On 18.10.2024 03:26, Richard Damon wrote:
    On 10/17/24 2:46 PM, WM wrote:

    When doubling natural numbers we obtain even numbers which have not
    been doubled.

    Then your "Actual Infinity" wasn't actually infinte.

    As it must contain *ALL* the Natural Numbers to be that set.

    Therefore the double numbers are not natural but infinite.

    2n > n is always true, in finite and in infinite sets.

    In FINITE or ORDINAL systems, and there 2n will be in the same actually infinite set as n.

    That is not possible if all natural numbers are doubled. The result
    covers the interval (0, ω*2) twice as large as the original one (0, ω).

    In Infinte Cardinal spaces (like Aleph_0 is in) 2n == n

    No.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Sat Oct 19 11:24:54 2024
    On 18.10.2024 03:26, Richard Damon wrote:
    On 10/17/24 2:46 PM, WM wrote:
    On 17.10.2024 02:18, Richard Damon wrote:
    On 10/16/24 1:18 PM, WM wrote:

    Of course it is a general rule. Doubling creates larger numbers.

    But those numbers are still in the set, and all the members of the
    set were doubled, so none of the doubled values got us to a value
    that wasn't doubled.

    Therefore not all doubles are natural.

    So, what ones aren't?

    They all are dark and cannot be named individually.

    It is proven that the set of Natural Numbers are closed under
    multiplication.

    That is not the set but the potentially infinite collection of Peano
    numbers.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to FromTheRafters on Sat Oct 19 13:00:19 2024
    On 19.10.2024 12:04, FromTheRafters wrote:
    WM submitted this idea :
    On 18.10.2024 14:26, Jim Burns wrote:

    There is no ω
    such that the numbers are
    evenly.spaced between 0 and ω
    because
    that describes a finite ordinal, not ω

    What is immediately before ω if not finite numbers?

    What is immediately before zero in the
    naturals?

    Zero is not the "limit" of smaller numbers but ω is.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Jim Burns on Sat Oct 19 13:10:20 2024
    On 19.10.2024 12:56, Jim Burns wrote:

    A number immediately before an infinite ordinal
    is an infinite ordinal.

    That is the traditional opinion. It has lead to internal contradictions (vanishing Bob). Therefore we have to use a new system, free of
    contradictions: Dark numbers.

    What is immediately before ω
    No number exists immediately before ω

    Immediately or not: The number before ω is finite.

    ω-1 can't be infinite and must be infinite.

    ω-1 is a natural number, but the dark numbers occupying almost all space between 0 and ω act like an infinity. We cannot look or count through
    them although all are finite, alas too large.

    Regards, WM

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  • From Jim Burns@21:1/5 to All on Sat Oct 19 06:56:26 2024
    On 10/19/2024 4:28 AM, WM wrote:
    On 18.10.2024 14:26, Jim Burns wrote:

    There is no ω
    such that the numbers are
    evenly.spaced between 0 and ω
    because
    that describes a finite ordinal, not ω

    What is immediately before ω
    if not finite numbers?

    🛇⎛ And what about equilateral right triangles?
    🛇⎝ Explain them, too!

    A number immediately before an infinite ordinal
    is an infinite ordinal.


    For finite ordinal k,
    k and each prior j < k
    has an immediate predecessor
    or is 0

    There is a general rule not open to further discussion:
    An infinite ordinal is not finite.

    For infinite ordinal ξ,
    ξ or one of prior β < ξ
    doesn't have an immediate predecessor
    and isn't 0

    For infinite ordinal ξ having ξ-1,
    ξ or ξ-1 or one of prior β < ξ-1
    doesn't have an immediate predecessor
    and isn't 0

    But ξ has an immediate predecessor.
    The predecessor.free isn't ξ

    For infinite ordinal ξ having ξ-1,
    ξ-1 or one of prior y < ξ-1
    doesn't have an immediate predecessor
    and isn't 0

    For infinite ordinal ξ having ξ-1,
    ξ-1 is infinite.

    What is immediately before ω
    if not finite numbers?

    No number exists immediately before ω

    ω-1 can't be infinite and must be infinite.
    ω-1 can't exist.

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Sat Oct 19 07:26:20 2024
    On 10/19/24 4:23 AM, WM wrote:
    On 18.10.2024 03:26, Richard Damon wrote:
    On 10/17/24 2:46 PM, WM wrote:

    When doubling natural numbers we obtain even numbers which have not
    been doubled.

    Then your "Actual Infinity" wasn't actually infinte.

    As it must contain *ALL* the Natural Numbers to be that set.

    Therefore the double numbers are not natural but infinite.

    How can doubling a finite number result in an infinite number?

    or do you mean are a part of an infinite set, in which case, YES, they
    must be just like the undoubled numbers were.


    2n > n is always true, in finite and in infinite sets.

    In FINITE or ORDINAL systems, and there 2n will be in the same
    actually infinite set as n.

    That is not possible if all natural numbers are doubled. The result
    covers the interval (0, ω*2) twice as large as the original one (0, ω).

    No, since (0, ω) doesn't include ω (and thus just the finite Natural numbers), and twice any Natural Number is another finite Natural number,
    the range of the results is the same as input range (0, ω)


    In Infinte Cardinal spaces (like Aleph_0 is in) 2n == n

    No.

    But it is, and saying No doesn't change it.

    At best, you can say that you logic doesn't include the Infinte
    Cardinals, but then it has been shown that it doesn't acually have ANY
    of the infinites, as your "Actual Infinity" isn't actually infinite.


    Regards, WM


    --- SoupGate-Win32 v1.05
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  • From joes@21:1/5 to All on Sat Oct 19 11:21:38 2024
    Am Sat, 19 Oct 2024 11:24:54 +0200 schrieb WM:
    On 18.10.2024 03:26, Richard Damon wrote:
    On 10/17/24 2:46 PM, WM wrote:
    On 17.10.2024 02:18, Richard Damon wrote:
    On 10/16/24 1:18 PM, WM wrote:

    It is proven that the set of Natural Numbers are closed under
    multiplication.
    That is not the set but the potentially infinite collection of Peano
    numbers.
    Same thing. The set of natural numbers is infinite, whether actual or potential. What is a "collection"?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to FromTheRafters on Sat Oct 19 13:53:44 2024
    On 19.10.2024 13:15, FromTheRafters wrote:
    WM was thinking very hard :
    On 19.10.2024 12:56, Jim Burns wrote:

    What is immediately before ω
    No number exists immediately before ω

    Immediately or not: The number before ω is finite.

    No number is before omega,

    In analysis we have to deal only with the infinitely small and the
    infinitely large as a limit-notion, as something becoming, emerging,
    produced, i.e., as we put it, with the potential infinite. [Hilbert].

    All these becoming, emerging, produced numbers are numbers before ω. Are
    they produced from nothing or are they produced from hitherto dark
    numbers? If from nothing, then these numbers are the numbers before ω.

    omega is the naturally ordered set of natural
    numbers.

    That is another meaning of the word but not relevant, in particular not
    if there is no set of natural numbers because new numbers can be
    produced and added.

    ω-1 can't be infinite and must be infinite.

    ω-1 is a natural number

    No it is not.

    ω-1 is a natural number if ℕ is a set, i.e., if no new numbers are
    produced from nothing.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From Moebius@21:1/5 to All on Sat Oct 19 14:06:33 2024
    Am 19.10.2024 um 13:21 schrieb joes:
    Am Sat, 19 Oct 2024 11:24:54 +0200 schrieb WM:
    On 18.10.2024 03:26, Richard Damon wrote:

    It is proven that the set of Natural Numbers [is] closed under
    multiplication.

    That is not the set but [bla bla bla]

    Yes, Mückenheim, we are talking about THE SET OF NATURAL NUMBERS, IN,
    and its elements -called NATURAL NUMBERS- here.

    This set is infinite.

    Hint: Damit dieses "Reden" sinnvoll ist, bedarf es natürlich eines entsprechenden mengentheoretischen Kontexts (->SET THEORY). (Das mag
    viell. nicht jedem Gesprächsteilnehmer hier klar sein, ist aber so.)

    [...] The set of natural numbers is infinite

    Indeed.

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  • From Moebius@21:1/5 to All on Sat Oct 19 14:19:12 2024
    Am 19.10.2024 um 10:20 schrieb Chris M. Thomasson:
    On 10/19/2024 1:10 AM, WM wrote:

    When doubling natural numbers we obtain even numbers which have not
    been doubled.

    Wtf?!

    This is a sentence that every mathematician can understand.

    Ja, und sofort als unfassbar blöde Äußerung erkennt.

    Wir erhalten also durch "verdoppeln" etwas, was n i c h t "verdoppelt"
    wurde? TICKST DU NOCH RICHTIG, MANN?

    --- SoupGate-Win32 v1.05
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  • From Alan Mackenzie@21:1/5 to wolfgang.mueckenheim@tha.de on Sat Oct 19 12:20:06 2024
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 17.10.2024 23:22, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    If you can't understand or don't believe, then there is no common basis
    for discussion.

    It's not a matter of belief. It's a matter of correct and rigorous
    mathematics.

    When doubling natural numbers we obtain even numbers which have not been doubled.

    This is a sentence that every mathematician can understand.

    It is not - it is ill formed and ambiguous. It doesn't say which
    natural numbers are being doubled. It is unmathematical in that it
    seems to posit a doubling being done one element at a time, rather than
    the standard mathematical concept of a mapping from N -> N where n is
    mapped to 2n. In this standard notion, all numbers are doubled, and we encounter no undoubled even natural numbers.

    It is true because the interval covered by the doubled numbers is
    twice as large as the interval covered by the numbers to be doubled.

    The interval is infinite. "Doubling" an infinite set yields a set of
    the same size as the original - there is a 1-1 correspondence between
    them.

    Regards, WM

    --
    Alan Mackenzie (Nuremberg, Germany).

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Alan Mackenzie on Sat Oct 19 15:38:53 2024
    On 19.10.2024 14:20, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 17.10.2024 23:22, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    If you can't understand or don't believe, then there is no common basis >>>> for discussion.

    It's not a matter of belief. It's a matter of correct and rigorous
    mathematics.

    When doubling natural numbers we obtain even numbers which have not been
    doubled.

    This is a sentence that every mathematician can understand.

    It is not - it is ill formed and ambiguous. It doesn't say which
    natural numbers are being doubled.

    That is not said because it is true for all sets of natural numbers.
    Your critique is therefore not justified but due to your lack of
    comprehension.

    It is unmathematical in that it
    seems to posit a doubling being done one element at a time

    Wrong again. Even all natural numbers can be multiplied by 2.

    rather than
    the standard mathematical concept of a mapping from N -> N where n is
    mapped to 2n. In this standard notion, all numbers are doubled, and we encounter no undoubled even natural numbers.

    Therefore the standard notion is wrong, if the natural numbers are a set.

    The interval occupied by the numbers is doubled when all numbers are
    multiplied by 2. If even the second half, which has not been multiplied, contains natural numbers numbers, then there are more after the
    procedure than before. Hence the "set" has changed and therefore is not
    a set. Note that sets do not change.

    It is true because the interval covered by the doubled numbers is
    twice as large as the interval covered by the numbers to be doubled.

    The interval is infinite. "Doubling" an infinite set yields a set of
    the same size as the original - there is a 1-1 correspondence between
    them.

    Multiplying n by 2 does not yield the same number.
    Multiplying all n by 2 does not yield the same numbers.
    Mathematics!

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Moebius on Sat Oct 19 15:18:56 2024
    On 19.10.2024 14:06, Moebius wrote:
    Am 19.10.2024 um 13:21 schrieb joes:
    Am Sat, 19 Oct 2024 11:24:54 +0200 schrieb WM:
    On 18.10.2024 03:26, Richard Damon wrote:

    It is proven that the set of Natural Numbers [is] closed under
    multiplication.

    That is not the set but the potentially infinite collection of Peano numbers.

    we are talking about THE SET OF NATURAL NUMBERS, IN,
    and its elements -called NATURAL NUMBERS- here.

    This set is infinite.

    If we process all natural numbers and get more than we have processed,
    then this is not a set but a collection, because sets do not change.

    Hint: Damit dieses "Reden" sinnvoll ist, bedarf es natürlich eines entsprechenden mengentheoretischen Kontexts (->SET THEORY). (Das mag
    viell. nicht jedem Gesprächsteilnehmer hier klar sein, ist aber so.)

    [...] The set of natural numbers is infinite

    Indeed.

    and does not change --- neither shrink nor grow.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From Alan Mackenzie@21:1/5 to wolfgang.mueckenheim@tha.de on Sat Oct 19 14:24:24 2024
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 19.10.2024 14:20, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 17.10.2024 23:22, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    If you can't understand or don't believe, then there is no common basis >>>>> for discussion.

    It's not a matter of belief. It's a matter of correct and rigorous
    mathematics.

    When doubling natural numbers we obtain even numbers which have not been >>> doubled.

    This is a sentence that every mathematician can understand.

    It is not - it is ill formed and ambiguous. It doesn't say which
    natural numbers are being doubled.

    That is not said because it is true for all sets of natural numbers.
    Your critique is therefore not justified but due to your lack of comprehension.

    It is not true for all sets of natural numbers.

    It is unmathematical in that it seems to posit a doubling being done
    one element at a time

    Wrong again. Even all natural numbers can be multiplied by 2.

    Which doesn't address the point I made.

    rather than the standard mathematical concept of a mapping from N -> N
    where n is mapped to 2n. In this standard notion, all numbers are
    doubled, and we encounter no undoubled even natural numbers.

    Therefore the standard notion is wrong, if the natural numbers are a set.

    You mean it's wrong because it doesn't gel with your intuition? Here it
    is your intuition which is wrong. If you think you can obtain an
    "undoubled" number in that mapping, please feel free to give an example.
    You can't, of course, you'll just say that all such are "dark numbers",
    your usual get out strategem, which is thoroughly predictable,
    uninteresting, and false.

    The interval occupied by the numbers is doubled when all numbers are multiplied by 2. If even the second half, which has not been multiplied, contains natural numbers numbers, then there are more after the
    procedure than before. Hence the "set" has changed and therefore is not
    a set. Note that sets do not change.

    You've got to be trolling here. Please tell me you're trolling - nobody
    can be that ignorant.

    Note that I haven't talked about "sets which change" - that's entirely
    your idea. I talked about a map from N -> N, where n maps to 2n.

    It is true because the interval covered by the doubled numbers is
    twice as large as the interval covered by the numbers to be doubled.

    The interval is infinite. "Doubling" an infinite set yields a set of
    the same size as the original - there is a 1-1 correspondence between
    them.

    Multiplying n by 2 does not yield the same number.
    Multiplying all n by 2 does not yield the same numbers.

    Nobody but you says it does. It might be helpful if you actually
    addressed the points I make, rather than using straw men.

    Mathematics!

    Mathematics is well worthy of study.

    Regards, WM

    --
    Alan Mackenzie (Nuremberg, Germany).

    --- SoupGate-Win32 v1.05
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  • From joes@21:1/5 to All on Sat Oct 19 15:27:35 2024
    Am Sat, 19 Oct 2024 15:18:56 +0200 schrieb WM:
    On 19.10.2024 14:06, Moebius wrote:
    Am 19.10.2024 um 13:21 schrieb joes:
    Am Sat, 19 Oct 2024 11:24:54 +0200 schrieb WM:
    On 18.10.2024 03:26, Richard Damon wrote:

    It is proven that the set of Natural Numbers [is] closed under
    multiplication.
    That is not the set but the potentially infinite collection of Peano
    numbers.
    It is usually called N. Now the Mückenhirn unnaturals may not be closed
    or infinite.

    we are talking about THE SET OF NATURAL NUMBERS, IN,
    and its elements -called NATURAL NUMBERS- here.
    This set is infinite.
    If we process all natural numbers and get more than we have processed,
    then this is not a set but a collection, because sets do not change.
    We don't get more. "Doubling" is a total function: every natural is
    mapped to exactly one other.

    Hint: Damit dieses "Reden" sinnvoll ist, bedarf es natürlich eines
    entsprechenden mengentheoretischen Kontexts (->SET THEORY). (Das mag
    viell. nicht jedem Gesprächsteilnehmer hier klar sein, ist aber so.)

    [...] The set of natural numbers is infinite
    and does not change --- neither shrink nor grow.
    Why should it.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to You just on Sat Oct 19 15:21:19 2024
    Am Sat, 19 Oct 2024 15:38:53 +0200 schrieb WM:
    On 19.10.2024 14:20, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 17.10.2024 23:22, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    When doubling natural numbers we obtain even numbers which have not
    been doubled.
    This is a sentence that every mathematician can understand.
    It is not - it is ill formed and ambiguous. It doesn't say which
    natural numbers are being doubled.
    That is not said because it is true for all sets of natural numbers.
    Your critique is therefore not justified but due to your lack of comprehension.
    It is not true for infinite sets.

    It is unmathematical in that it
    seems to posit a doubling being done one element at a time
    Wrong again. Even all natural numbers can be multiplied by 2.
    You seem unable to imagine that.

    rather than the standard mathematical concept of a mapping from N -> N
    where n is mapped to 2n. In this standard notion, all numbers are
    doubled, and we encounter no undoubled even natural numbers.
    Therefore the standard notion is wrong, if the natural numbers are a
    set.
    "if"

    The interval occupied by the numbers is doubled when all numbers are multiplied by 2. If even the second half, which has not been multiplied,
    You just said all numbers are multiplied. What is the "second half"?

    contains natural numbers, then there are more after the
    procedure than before. Hence the "set" has changed and therefore is not
    a set. Note that sets do not change.
    Tell that the potential infinity.

    It is true because the interval covered by the doubled numbers is
    twice as large as the interval covered by the numbers to be doubled.
    The interval is infinite. "Doubling" an infinite set yields a set of
    the same size as the original - there is a 1-1 correspondence between
    them.
    Multiplying n by 2 does not yield the same number.
    Multiplying all n by 2 does not yield the same numbers.
    In part it does. All even numbers are also naturals.
    {1, 2, 3, 4} n 2*{1, 2, 3, 4}
    = {1, 2, 3, 4} n {2, 4, 6, 8}
    = {2, 4}


    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From Jim Burns@21:1/5 to All on Sat Oct 19 12:04:54 2024
    On 10/19/2024 4:16 AM, WM wrote:
    On 18.10.2024 00:34, Jim Burns wrote:
    On 10/1v7/2024 2:22 PM, WM wrote:
    On 17.10.2024 00:39, Jim Burns wrote:

    The only set of natural numbers with no first
    is the empty set..

    No, the set of dark numbers is
    another set without smallest element.

    A nonempty set without a first element
    is not a set of only finite ordinals.

    The set of dark numbers contains
    only natural numbers.

    There is a general rule not open to further discussion:
    Things which aren't natural numbers
    shouldn't be called natural numbers.

    What you call a "set of finite ordinals" is
    not a set
    but a potentially infinite collection.

    There is a general rule not open to further discussion:
    Finite sets aren't potentially infinite collections.

    ----
    Consider nonempty S of only finite ordinals:
    only ordinals with only finitely.many priors.

    k ∈ S is a finite ordinal
    Its set ⦃j∈𝕆:j<k⦄ of priors is finite.

    ⦃j∈𝕆:j<k⦄∩S ⊆ ⦃j∈𝕆:j<k⦄
    ⦃j∈𝕆:j<k⦄∩S is a finite set
    ⦃j∈𝕆:j<k⦄∩S holds its first or is empty.

    ⎛ If Priors.in.S ⦃j∈𝕆:j<k⦄∩S is empty
    ⎝then k is first.in.S

    ⎛ If Priors.in.S ⦃j∈𝕆:j<k⦄∩S is not empty
    ⎜ then i is first.in.⦃j∈𝕆:j<k⦄∩S

    ⎜⎛ For i and m ∈ S, i≠m,
    ⎜⎜ consider set {i,m} of finite ordinals
    ⎜⎜ {i,m} holds first.in.{i,m}
    ⎜⎜ i<m ∨ m<i
    ⎜⎜
    ⎜⎜ i<m
    ⎜⎜⎛ Otherwise, m<i and
    ⎜⎜⎜ m ∈ ⦃j∈𝕆:j<k⦄∩S and
    ⎜⎝⎝ i isn't first.in.⦃j∈𝕆:j<k⦄∩S

    ⎜ for i and m ∈ S, i≤m
    ⎝ i is first.in.S

    Nonempty S of only finite ordinals
    holds first.in.S

    No, the set of dark numbers is
    another set without smallest element.

    A nonempty set without a first element
    is not a set of only finite ordinals.

    The set of dark numbers contains
    only natural numbers.

    If dark numbers 𝔻 doesn't hold first.in.𝔻
    then
    either 𝔻 is empty
    or 𝔻 isn't only finite ordinals.

    Proof:
    If you double all your finite ordinals
    you obtain only finite ordinals again,

    Yes.

    although the covered interval is
    twice as large as the original interval
    covered by "all" your finite ordinals.

    No.
    The least.upper.bound of finites is ω
    The least.upper.bound of doubled finites is ω

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  • From WM@21:1/5 to Alan Mackenzie on Sat Oct 19 19:06:52 2024
    On 19.10.2024 16:24, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    rather than the standard mathematical concept of a mapping from N -> N
    where n is mapped to 2n. In this standard notion, all numbers are
    doubled, and we encounter no undoubled even natural numbers.

    Therefore the standard notion is wrong, if the natural numbers are a set.

    You mean it's wrong because it doesn't gel with your intuition?

    No, it does not comply with mathematics. When multiplying all natural
    numbers by 2, then the number of numbers remains the same but the
    density is reduced and therefore the interval is doubled. 2 > n. Hence
    either natural numbers are created which have not been multiplied, then
    ℕ is not a set, or other numbers are created, then ℕ is a set.

    If you think you can obtain an
    "undoubled" number in that mapping, please feel free to give an example.

    I can prove it by 2n > n.

    You can't, of course, you'll just say that all such are "dark numbers",

    Either dark numbers or natnumbers which have not been processed. There
    is no other way because 2n > n.

    Note that I haven't talked about "sets which change" - that's entirely
    your idea. I talked about a map from N -> N, where n maps to 2n.

    This Bourbaki-notion can be applied to potentially infinite sets only.
    Try to understand the correct mathematics.

    Regards, WM

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  • From WM@21:1/5 to FromTheRafters on Sat Oct 19 18:50:06 2024
    On 19.10.2024 16:08, FromTheRafters wrote:
    WM expressed precisely :
    On 19.10.2024 13:15, FromTheRafters wrote:
    WM was thinking very hard :
    On 19.10.2024 12:56, Jim Burns wrote:

    What is immediately before ω
    No number exists immediately before ω

    Immediately or not: The number before ω is finite.

    No number is before omega,

    In analysis we have to deal only with the infinitely small and the
    infinitely large as a limit-notion, as something becoming, emerging,
    produced, i.e., as we put it, with the potential infinite. [Hilbert].

    Is this from a 1925 lecture?#

    Yes. [D. Hilbert: "Über das Unendliche", Mathematische Annalen 95 (1925)
    p. 167]

    All these becoming, emerging, produced numbers

    What does that even mean?

    It means that you cannot use, name, identify all natural numbers. There
    is always a greatest one for you. This is either the last one existing
    or the last one before the dark realm.

    omega is the naturally ordered set of natural numbers.

    That is another meaning of the word but not relevant, in particular
    not if there is no set of natural numbers because new numbers  can be
    produced and added.

    ???

    If we multiply all natural numbers by 2, then the number of numbers does
    not change but the interval is doubled. That means the result contains
    larger numbers than we have multiplied. If these are natural numbers
    too, then we have not multiplied all.

    If we process all natural numbers and get more than we have processed,
    then this is not a set but a potentially infinite collection, because
    sets do not change.

    Regards, WM

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  • From WM@21:1/5 to Alan Mackenzie on Sat Oct 19 19:57:55 2024
    On 19.10.2024 19:32, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    When multiplying all natural numbers by 2, then the number of numbers
    remains the same but the density is reduced and therefore the interval
    is doubled.

    That's not mathematics.

    It is mathematics.

    It's merely your intuition, derived from finite
    sets and misapplied to infinite sets.

    It is the basic mathematics of natural numbers: 2n > n.
    If you believe in a different version of mathematics, try to find people
    who are interested in that version. I am not.

    In mathematics, there is no meaningful distinction between what you think
    of as two different forms of infinity.

    You have not the faintest idea of infinity.

    Regards, WM

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  • From Alan Mackenzie@21:1/5 to wolfgang.mueckenheim@tha.de on Sat Oct 19 17:32:15 2024
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 19.10.2024 16:24, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    rather than the standard mathematical concept of a mapping from N -> N >>>> where n is mapped to 2n. In this standard notion, all numbers are
    doubled, and we encounter no undoubled even natural numbers.

    Therefore the standard notion is wrong, if the natural numbers are a set.

    You mean it's wrong because it doesn't gel with your intuition?

    No, it does not comply with mathematics.

    How would you know? You don't have a degree in maths, and aren't willing
    to take lessons from those who do.

    When multiplying all natural numbers by 2, then the number of numbers
    remains the same but the density is reduced and therefore the interval
    is doubled.

    That's not mathematics. It's merely your intuition, derived from finite
    sets and misapplied to infinite sets.

    2 > n. Hence either natural numbers are created which have not been multiplied, then ℕ is not a set, or other numbers are created, then ℕ
    is a set.

    Again, not mathematics, but merely your intuition. We're talking about infinite sets here and maps between them. There is no notion of
    "created" involved at all.

    If you think you can obtain an "undoubled" number in that mapping,
    please feel free to give an example.

    I can prove it by 2n > n.

    You can't. You don't even understand the meaning of the word prove as it pertains to mathematics. As I say, if you maintain there is such a
    doubled number which wasn't in N to begin with, you should produce it or
    shut up.

    You can't, of course, you'll just say that all such are "dark
    numbers",

    Either dark numbers or natnumbers which have not been processed. There
    is no other way because 2n > n.

    Again, not mathematics. There is no notion of "processed" any more than there's one of "created". There's a map between two infinite sets.

    Note that I haven't talked about "sets which change" - that's entirely
    your idea. I talked about a map from N -> N, where n maps to 2n.

    This Bourbaki-notion can be applied to potentially infinite sets only.
    Try to understand the correct mathematics.

    In mathematics, there is no meaningful distinction between what you think
    of as two different forms of infinity. That's why such a distinction has fallen out of use in serious mathematical discourse.

    Regards, WM

    --
    Alan Mackenzie (Nuremberg, Germany).

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  • From WM@21:1/5 to joes on Sat Oct 19 20:04:36 2024
    On 19.10.2024 17:21, joes wrote:
    Am Sat, 19 Oct 2024 15:38:53 +0200 schrieb WM:
    On 19.10.2024 14:20, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 17.10.2024 23:22, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    When doubling natural numbers we obtain even numbers which have not
    been doubled.
    This is a sentence that every mathematician can understand.
    It is not - it is ill formed and ambiguous. It doesn't say which
    natural numbers are being doubled.
    That is not said because it is true for all sets of natural numbers.
    Your critique is therefore not justified but due to your lack of
    comprehension.
    It is not true for infinite sets.

    The density of numbers is halved when multiplying them by 2. That is
    true for all sets.

    It is unmathematical in that it
    seems to posit a doubling being done one element at a time
    Wrong again. Even all natural numbers can be multiplied by 2.
    You seem unable to imagine that.

    That's why I propose it?

    rather than the standard mathematical concept of a mapping from N -> N
    where n is mapped to 2n. In this standard notion, all numbers are
    doubled, and we encounter no undoubled even natural numbers.
    Therefore the standard notion is wrong, if the natural numbers are a
    set.
    "if"

    Yes.

    The interval occupied by the numbers is doubled when all numbers are
    multiplied by 2. If even the second half, which has not been multiplied,
    You just said all numbers are multiplied. What is the "second half"?

    When the density is halved and the number remains, then the interval is doubled.

    Multiplying all n by 2 does not yield the same numbers.
    In part it does. All even numbers are also naturals.

    All even numbers which have been multiplied are natural numbers by
    definition. And by the same definition there were not more even natural numbers. But as the result there are more.

    Regards, WM

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  • From WM@21:1/5 to joes on Sat Oct 19 20:09:47 2024
    On 19.10.2024 17:27, joes wrote:
    Am Sat, 19 Oct 2024 15:18:56 +0200 schrieb WM:

    If we process all natural numbers and get more than we have processed,
    then this is not a set but a collection, because sets do not change.
    We don't get more.

    No. But the density of the numbers is halved.

    "Doubling" is a total function: every natural is
    mapped to exactly one other.

    But not to one of the original set.

    Hint: Damit dieses "Reden" sinnvoll ist, bedarf es natürlich eines
    entsprechenden mengentheoretischen Kontexts (->SET THEORY). (Das mag
    viell. nicht jedem Gesprächsteilnehmer hier klar sein, ist aber so.)

    [...] The set of natural numbers is infinite
    and does not change --- neither shrink nor grow.
    Why should it.

    If every natural is mapped to exactly one other, then half of them are
    not elements of the mapped set. The set ha grown.

    Regards, WM

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  • From Jim Burns@21:1/5 to All on Sat Oct 19 14:12:03 2024
    On 10/19/2024 7:10 AM, WM wrote:
    On 19.10.2024 12:56, Jim Burns wrote:

    A number immediately before an infinite ordinal
    is an infinite ordinal.

    That is the traditional opinion.

    You do not understand what "A number..." says
    because
    you think 'infinite' means
    'even a little beyond usable numbers',
    something which it does not mean.

    https://www.youtube.com/watch?v=aE9oOHrRMJI
    ⎛ You keep using that word.
    ⎝ I do not think it means what you think it means.

    For finite ordinal k
    each ordinal j in ⦅0,k⟧ is predecessored,
    that is, j-1 exists

    For infinite ordinal ξ, not that:
    some ordinal β in ⦅0,ξ⟧ is un.predecessored,
    that is, β-1 doesn't exist

    If infinite ξ is predecessored
    and some β in ⦅0,ξ⟧ is un.predecessored,
    then
    some ordinal in ⦅0,ξ⟧\{ξ} is un.predecessored.

    But ⦅0,ξ⟧\{ξ} = ⦅0,ξ-1⟧
    and
    some ordinal in ⦅0,ξ-1⟧ being un.predecessored
    means
    ξ-1 is infinite.

    It has lead to internal contradictions
    (vanishing Bob).

    The contradictions are with
    _what you think_ 'infinite' means.
    (op. cit. Inigo Montoya)

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  • From Alan Mackenzie@21:1/5 to wolfgang.mueckenheim@tha.de on Sat Oct 19 18:22:54 2024
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 19.10.2024 19:32, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    When multiplying all natural numbers by 2, then the number of numbers
    remains the same but the density is reduced and therefore the interval
    is doubled.

    That's not mathematics.

    It is mathematics.

    It's merely your intuition, derived from finite sets and misapplied to
    infinite sets.

    It is the basic mathematics of natural numbers: 2n > n.

    Of course 2n > n for all n > 0. That has no connection with the other
    crazy things you've been asserting.

    If you believe in a different version of mathematics, try to find
    people who are interested in that version. I am not.

    The other posters on this newsgroups, they are not hard to find. We all understand standard mathematics. You do not.

    In mathematics, there is no meaningful distinction between what you think
    of as two different forms of infinity.

    You have not the faintest idea of infinity.

    But I do. An infinite set is one which has a proper subset which can be
    put into 1-1 correspondence with the original set. That is the
    definition. You clearly don't understand that definition, and you go to
    great lengths to preserve that lack of understanding.

    Regards, WM

    --
    Alan Mackenzie (Nuremberg, Germany).

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  • From WM@21:1/5 to FromTheRafters on Sat Oct 19 20:22:57 2024
    On 19.10.2024 20:04, FromTheRafters wrote:
    WM has brought this to us :

    Either dark numbers or natnumbers which have not been processed. There
    is no other way because 2n > n.

    Processed? Created? As I told you before, these are objects not projects.

    Tell what you like. Doubling a number is a process.

    Regards, WM

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  • From WM@21:1/5 to Jim Burns on Sat Oct 19 20:28:07 2024
    On 19.10.2024 20:12, Jim Burns wrote:
    On 10/19/2024 7:10 AM, WM wrote:


    It has lead to internal contradictions (vanishing Bob).

    The contradictions are with
    _what you think_ 'infinite' means.

    The contradiction is independent of infinity. It is your claim that
    exchanging two objects can result in the loss of one of them.

    Regards, WM

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  • From WM@21:1/5 to Jim Burns on Sat Oct 19 20:19:30 2024
    On 19.10.2024 18:04, Jim Burns wrote:
    On 10/19/2024 4:16 AM, WM wrote:

    What you call a "set of finite ordinals" is
    not a set
    but a potentially infinite collection.

    There is a general rule not open to further discussion:
    Finite sets aren't potentially infinite collections.

    Potentially infinite collections are finite sets open to change.
    Proof:
    If you double all your finite ordinals
    you obtain only finite ordinals again,

    Yes.

    although the covered interval is
    twice as large as the original interval
    covered by "all" your finite ordinals.

    No.
    The least.upper.bound of finites is ω
    The least.upper.bound of doubled finites is ω

    Doubling halves the density and doubles the interval, creating numbers
    which had not been doubled. 2n > n does not fail for any natural number.

    Regards, WM











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  • From WM@21:1/5 to Alan Mackenzie on Sat Oct 19 21:02:33 2024
    On 19.10.2024 20:22, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    An infinite set is one which has a proper subset which can be
    put into 1-1 correspondence with the original set. That is the
    definition.

    According to Dedekind every set {1, 2, 3, ..., n} is in correspondence
    with the set {2, 4, 6, ..., 2n} which covers twice the interval,
    containing numbers not in the original set. This does not change when
    the whole set ℕ is multiplied by 2. The result covers twice the
    interval, containing numbers not in the original set ℕ.

    Regards, WM

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  • From Alan Mackenzie@21:1/5 to wolfgang.mueckenheim@tha.de on Sat Oct 19 20:19:34 2024
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 19.10.2024 20:22, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    An infinite set is one which has a proper subset which can be
    put into 1-1 correspondence with the original set. That is the
    definition.

    According to Dedekind every set {1, 2, 3, ..., n} is in correspondence
    with the set {2, 4, 6, ..., 2n} which covers twice the interval,
    containing numbers not in the original set.

    This is true, though has nothing to do with my point about the
    definition of an infinite set.

    This does not change when the whole set ℕ is multiplied by 2.

    It does. It changes dramatically.

    The result covers twice the interval, ....

    It does not, except in the sense that twice infinite = infinite.

    .... containing numbers not in the original set ℕ.

    No. If you think that, then give an example of a 2n which "isn't in the original set N". You won't and you can't. But you'll likely come back
    to your standard get-out clause about (non existent) "dark numbers".

    Regards, WM

    --
    Alan Mackenzie (Nuremberg, Germany).

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  • From Moebius@21:1/5 to All on Sat Oct 19 22:48:28 2024
    Am 19.10.2024 um 20:22 schrieb Alan Mackenzie:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    If you believe in a different version of mathematics, try to find
    people who are interested in that version. I am not.

    The other posters on this newsgroups, they are not hard to find. We all understand standard mathematics. You do not.

    Right.

    @Mückenheim: Du hast es gelesen, Mückenheim. Ich stimme dem zu.

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  • From Moebius@21:1/5 to All on Sat Oct 19 23:41:30 2024
    Am 19.10.2024 um 07:21 schrieb Chris M. Thomasson:

    Gloria? [...]

    https://youtu.be/nNEb2k_EmMg?list=RDy3hf0T4qpYg

    Not that bad. She has a voice. (So better without video.)

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  • From Moebius@21:1/5 to All on Sat Oct 19 23:46:50 2024
    Am 19.10.2024 um 07:40 schrieb Chris M. Thomasson:

    [...] Creatures of the night type lyrics:

    https://youtu.be/RP0_8J7uxhs

    Oh, the 80s. :-)

    Shiiiit:

    "Branigan died in her sleep at her lodge in East Quogue, New York, on
    August 26, 2004, aged 52. The cause was attributed to a previously
    undiagnosed cerebral aneurysm."

    Fuck! :-(

    Source: https://en.wikipedia.org/wiki/Laura_Branigan"

    RIP, Laura.

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  • From Jim Burns@21:1/5 to All on Sat Oct 19 18:08:23 2024
    On 10/19/2024 2:28 PM, WM wrote:
    On 19.10.2024 20:12, Jim Burns wrote:
    On 10/19/2024 7:10 AM, WM wrote:

    It has lead to internal contradictions
    (vanishing Bob).

    The contradictions are with
    _what you think_ 'infinite' means.

    The contradiction is independent of infinity.
    It is your claim that

    infinitely.many exchanges in an infinite set
    (vanishing Bob)

    exchanging two objects
    can result in the loss of one of them.

    I fixed that for you.

    I don't mind defending the claims which
    I actually make.
    It appears as though you don't know what I claim.

    Thank you for providing more evidence that
    you (WM) don't know what 'infinite' means, or,
    at best(?), you are lying about not.knowing.

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  • From Jim Burns@21:1/5 to All on Sat Oct 19 18:54:14 2024
    On 10/19/2024 2:19 PM, WM wrote:
    On 19.10.2024 18:04, Jim Burns wrote:
    On 10/19/2024 4:16 AM, WM wrote:

    What you call a "set of finite ordinals" is
    not a set
    but a potentially infinite collection.

    There is a general rule not open to further discussion:
    Finite sets aren't potentially infinite collections.

    Potentially infinite collections are
    finite sets open to change.

    That makes it easy.

    No sets are open to change.
    No sets are (your) potentially infinite,
    No finite sets are potentially infinite.

    The rule stands.

    Proof:
    If you double all your finite ordinals
    you obtain only finite ordinals again,

    Yes.

    although the covered interval is
    twice as large as the original interval
    covered by "all" your finite ordinals.

    No.
    The least.upper.bound of finites is ω
    The least.upper.bound of doubled finites is ω

    Doubling halves the density and doubles the interval,
    creating numbers which had not been doubled.
    2n > n does not fail for any natural number.

    The least.upper.bound of finites is ω

    What ω is
    is such that
    k < ω ⇔ k is a finite ordinal.

    No k exists such that
    k is a finite and k+1 > k is not a finite.

    No k exists such that
    k is an upper.bound of the finites.

    ω is but anything prior to ω isn't
    an upper.bound of the finites.

    ω is the least.upper.bound of the finites.

    The least.upper.bound of doubled finites is ω

    A doubled finite is finite.

    No k exists such that
    2⋅k is a finite and 2⋅k+2 > 2⋅k is not a finite.

    No k exists such that
    2⋅k is an upper.bound of the doubled finites.

    ω is but anything prior to ω isn't
    an upper.bound of the doubled finites.

    ω is the least.upper.bound of the doubled finites.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Sat Oct 19 22:48:49 2024
    On 10/19/24 4:28 AM, WM wrote:
    On 18.10.2024 14:26, Jim Burns wrote:

    There is no ω
    such that the numbers are
    evenly.spaced between 0 and ω
    because
    that describes a finite ordinal, not ω

    What is immediately before ω if not finite numbers?

    Regards, WM


    The SET of Natural Numbers, not any one in particular.

    That is a break from a change of scale.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Sun Oct 20 09:40:21 2024
    On 20.10.2024 00:08, Jim Burns wrote:
    On 10/19/2024 2:28 PM, WM wrote:


    The contradiction is independent of infinity.
    It is your claim that

    infinitely.many exchanges in an infinite set
    (vanishing Bob)

    Every exchange is _one_ lossless exchange.

    exchanging two objects
    can result in the loss of one of them.

    I fixed that for you.

    It is nonsense like:
    ∀n ∈ ℕ: |{2, 4, 6, ..., 2n}|/|{1, 2, 3, 4, 5, 6, ..., 2n} = 1/2
    but |{2, 4, 6, ...}|/|{1, 2, 3, 4, 5, 6, ...} = 1.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Alan Mackenzie on Sun Oct 20 09:30:43 2024
    On 19.10.2024 22:19, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    The result covers twice the interval, ....

    It does not, except in the sense that twice infinite = infinite.

    Twice the infinite contains numbers not in the first infinite. What else
    could twice mean?

    .... containing numbers not in the original set ℕ.

    No. If you think that, then give an example of a 2n which "isn't in the original set N".

    These numbers are dark. Their existence is proven by the fact that
    ∀n ∈ ℕ, n < 2n.

    You won't and you can't. But you'll likely come back
    to your standard get-out clause about (non existent) "dark numbers".

    The only alternative is that doubling numbers creates only doubled
    numbers. It is not acceptable. It cannot be apologized by the
    possibility to map all numbers on even numbers.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Sun Oct 20 09:48:26 2024
    On 20.10.2024 00:54, Jim Burns wrote:
    On 10/19/2024 2:19 PM, WM wrote:

    A doubled finite is finite.

    If all finites are doubled, then not all results can be in that set.
    Either more finites appear, or the results are infinite.

    No k exists such that
    2⋅k is a finite and 2⋅k+2 > 2⋅k is not a finite.

    All doubled numbers result in larger numbers. That cannot be avoided.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Sun Oct 20 09:51:37 2024
    On 20.10.2024 04:48, Richard Damon wrote:
    On 10/19/24 4:28 AM, WM wrote:
    On 18.10.2024 14:26, Jim Burns wrote:

    There is no ω
    such that the numbers are
    evenly.spaced between 0 and ω
    because
    that describes a finite ordinal, not ω

    What is immediately before ω if not finite numbers?

    The SET of Natural Numbers, not any one in particular.

    In this linearly ordered set there can only be one number before ω.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Sun Oct 20 09:54:41 2024
    On 20.10.2024 04:48, Richard Damon wrote:

    Which is what builds the actual infinite set. "Actual Infinity" is what
    you get when you conplete that construction process.

    If it is completed and then all numbers are doubled, what do you get then?

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Alan Mackenzie@21:1/5 to wolfgang.mueckenheim@tha.de on Sun Oct 20 09:21:46 2024
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 20.10.2024 00:54, Jim Burns wrote:
    On 10/19/2024 2:19 PM, WM wrote:

    A doubled finite is finite.

    If all finites are doubled, then not all results can be in that set.
    Either more finites appear, or the results are infinite.

    That's your intuition getting the better of you again. When "all
    finites" (by which I assume you mean natural numbers) are doubled, all
    the doubled numbers are finite, too. We're talking about a mapping
    between infinite sets, not a process. Nothing "appears".

    If you think some of the doubled numbers are infinite, please give an
    example of a natural number which when doubled becomes infinite.

    No k exists such that
    2⋅k is a finite and 2⋅k+2 > 2⋅k is not a finite.

    All doubled numbers result in larger numbers. That cannot be avoided.

    Of course, for n > 0, 2n > n. That need not be avoided.

    Regards, WM

    --
    Alan Mackenzie (Nuremberg, Germany).

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Alan Mackenzie on Sun Oct 20 11:49:46 2024
    On 20.10.2024 11:21, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 20.10.2024 00:54, Jim Burns wrote:
    On 10/19/2024 2:19 PM, WM wrote:

    A doubled finite is finite.

    If all finites are doubled, then not all results can be in that set.
    Either more finites appear, or the results are infinite.

    That's your intuition getting the better of you again.

    It is not intuition but fact that 2n > n.

    When "all
    finites" (by which I assume you mean natural numbers) are doubled, all
    the doubled numbers are finite, too.

    Maybe, but they are not all in the original set. Hence more natural
    numbers are necessary than have been doubled or mapped.

    We're talking about a mapping
    between infinite sets, not a process. Nothing "appears".

    Say mapping or multiplying, it is a process. But that is not important. Important is only that in the image there are numbers which have not
    been mapped because 2n > n.

    If you think some of the doubled numbers are infinite, please give an
    example of a natural number which when doubled becomes infinite.

    In the image there are numbers which are not in the original set. If all natural numbers have been mapped, then there are larger numbers in the
    image. That is an unavoidable consequence. These numbers cannot be seen,
    but that does not negate the consequence.

    If this is not accepted, then not all natural numbers of the image have
    been in the original set.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Alan Mackenzie@21:1/5 to wolfgang.mueckenheim@tha.de on Sun Oct 20 09:39:27 2024
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 19.10.2024 22:19, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    The result covers twice the interval, ....

    It does not, except in the sense that twice infinite = infinite.

    Twice the infinite contains numbers not in the first infinite.

    It does not.

    What else could twice mean?

    It doesn't really mean much at all. I was trying to correct your
    intuition.

    .... containing numbers not in the original set ℕ.

    No. If you think that, then give an example of a 2n which "isn't in the
    original set N".

    These numbers are dark. Their existence is proven by the fact that
    ∀n ∈ ℕ, n < 2n.

    Their non-existence I proved in this thread, many posts ago.

    You won't and you can't. But you'll likely come back
    to your standard get-out clause about (non existent) "dark numbers".

    The only alternative is that doubling numbers creates only doubled
    numbers.

    That's more or less what happens, except that numbers aren't "created".
    They just are.

    It is not acceptable.

    It is accepted by mathematicians.

    It cannot be apologized by the possibility to map all numbers on even numbers.

    There exists a 1-1 correspondence between all natural numbers and all
    even natural numbers, a proper subset of all natural numbers. The set of
    all natural numbers is thus infinite.

    Not all properties of finite sets hold for infinite sets.

    Regards, WM

    --
    Alan Mackenzie (Nuremberg, Germany).

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Alan Mackenzie on Sun Oct 20 11:59:31 2024
    On 20.10.2024 11:39, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 19.10.2024 22:19, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    The result covers twice the interval, ....

    It does not, except in the sense that twice infinite = infinite.

    Twice the infinite contains numbers not in the first infinite.

    It does not.

    2n > n holds for all natural numbers.

    What else could twice mean?

    It doesn't really mean much at all.

    It means that after doubling more numbers are there than have been doubled.

    These numbers are dark. Their existence is proven by the fact that
    ∀n ∈ ℕ, n < 2n.

    Their non-existence I proved in this thread, many posts ago.

    Based on wrong assumptions.

    The only alternative is that doubling numbers creates only doubled
    numbers.

    That's more or less what happens, except that numbers aren't "created".
    They just are.

    That's not what happens i mathematics.

    It is not acceptable.

    It is accepted by mathematicians.

    Only by those who never thought about that topic.

    It cannot be apologized by the possibility to map all numbers on even
    numbers.

    There exists a 1-1 correspondence between all natural numbers and all
    even natural numbers, a proper subset of all natural numbers. The set of
    all natural numbers is thus infinite.

    The mapping needs larger numbers than have been mapped. That is not a
    matter of infinite sets but basic mathematics of all natural numbers.
    The correspondence between all natural numbers and all even natural
    numbers requires a variable "all". Potential infinity.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Sun Oct 20 07:50:56 2024
    On 10/20/24 3:40 AM, WM wrote:
    On 20.10.2024 00:08, Jim Burns wrote:
    On 10/19/2024 2:28 PM, WM wrote:


    The contradiction is independent of infinity.
    It is your claim that

    infinitely.many exchanges in an infinite set
    (vanishing Bob)

    Every exchange is _one_ lossless exchange.

    exchanging two objects
    can result in the loss of one of them.

    I fixed that for you.

    It is nonsense like:
    ∀n ∈ ℕ: |{2, 4, 6, ..., 2n}|/|{1, 2, 3, 4, 5, 6, ..., 2n} = 1/2
    but |{2, 4, 6, ...}|/|{1, 2, 3, 4, 5, 6, ...} = 1.

    Regards, WM


    Right, but

    |{2, 4, 6, ...}| is Aleph_0, as is |{1, 2, 3, 4, 5, 6, ...}|

    Which is a value you have admitted your mathematics doesn't have.

    You have admitted that your "actual infinity" isn't actually infinite,
    and just a term used to lie.

    I(nfinity isn't just "really big numbers" like you want to treat it, but
    a set of numbers with DIFFERENT properties from the finite.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Sun Oct 20 07:53:20 2024
    On 10/20/24 3:51 AM, WM wrote:
    On 20.10.2024 04:48, Richard Damon wrote:
    On 10/19/24 4:28 AM, WM wrote:
    On 18.10.2024 14:26, Jim Burns wrote:

    There is no ω
    such that the numbers are
    evenly.spaced between 0 and ω
    because
    that describes a finite ordinal, not ω

    What is immediately before ω if not finite numbers?

    The SET of Natural Numbers, not any one in particular.

    In this linearly ordered set there can only be one number before ω.

    Regards, WM



    No, in the linearly ordered set there isn't a "number" before ω, just as
    there isn't a Natural Number before 0.

    ω is ordered with respect to the SET of Natual Numbers, and comes after ALL.

    Since that set doesn't HAVE a "last element" there isn't "one number"
    before ω.

    That just comes out of your finite and ignorant logic.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Sun Oct 20 07:55:01 2024
    On 10/20/24 3:54 AM, WM wrote:
    On 20.10.2024 04:48, Richard Damon wrote:

    Which is what builds the actual infinite set. "Actual Infinity" is
    what you get when you conplete that construction process.

    If it is completed and then all numbers are doubled, what do you get then?

    Regards, WM


    A set of exactly the same size using only some of the numbers of the
    original set.

    That is part of the property of the infinite.

    Something that seems to explode your mind because it can't handle the
    concept of something actually being infinite.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Sun Oct 20 07:56:05 2024
    On 10/20/24 3:48 AM, WM wrote:
    On 20.10.2024 00:54, Jim Burns wrote:
    On 10/19/2024 2:19 PM, WM wrote:

    A doubled finite is finite.

    If all finites are doubled, then not all results can be in that set.
    Either more finites appear, or the results are infinite.

    No k exists such that
    2⋅k is a finite and 2⋅k+2 > 2⋅k is not a finite.

    All doubled numbers result in larger numbers. That cannot be avoided.

    Regards, WM

    But since there isn't a "largest" number, we can find that in the set.

    It doesn't work for finite sets, but does for infinite sets, something
    that seems to blow your mind to smithereens.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Alan Mackenzie@21:1/5 to wolfgang.mueckenheim@tha.de on Sun Oct 20 12:56:07 2024
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 20.10.2024 11:39, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 19.10.2024 22:19, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    The result covers twice the interval, ....

    It does not, except in the sense that twice infinite = infinite.

    Twice the infinite contains numbers not in the first infinite.

    It does not.

    2n > n holds for all natural numbers.

    Yes, it holds for all finite numbers greater than zero. It does not hold
    for infinite numbers.

    What else could twice mean?

    It doesn't really mean much at all.

    It means that after doubling more numbers are there than have been doubled.

    You could do with a better dictionary.

    These numbers are dark. Their existence is proven by the fact that
    ∀n ∈ ℕ, n < 2n.

    Their non-existence I proved in this thread, many posts ago.

    Based on wrong assumptions.

    No, based on standard mathematical knowledge. You failed to challenge my
    proof when I posted it, so to disparage it now is dishonest.

    The only alternative is that doubling numbers creates only doubled
    numbers.

    That's more or less what happens, except that numbers aren't "created".
    They just are.

    That's not what happens in mathematics.

    How would you know? You're not a mathematician.

    It is not acceptable.

    It is accepted by mathematicians.

    Only by those who never thought about that topic.

    It is accepted by ALL mathematicians, the ones who accept that 2 + 2 = 4.
    It's pretty basic stuff, not at all advanced.

    It cannot be apologized by the possibility to map all numbers on even
    numbers.

    There exists a 1-1 correspondence between all natural numbers and all
    even natural numbers, a proper subset of all natural numbers. The set of
    all natural numbers is thus infinite.

    The mapping needs larger numbers than have been mapped.

    It does not. Each number in the image is in the range.

    That is not a matter of infinite sets but basic mathematics of all
    natural numbers. The correspondence between all natural numbers and
    all even natural numbers requires a variable "all". Potential infinity.

    It does not. "All" means what it means. "Potential" infinity is purely
    a historical artifact with no currency in modern mathematical discourse.

    Regards, WM

    --
    Alan Mackenzie (Nuremberg, Germany).

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Alan Mackenzie@21:1/5 to wolfgang.mueckenheim@tha.de on Sun Oct 20 12:20:12 2024
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 20.10.2024 11:21, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 20.10.2024 00:54, Jim Burns wrote:
    On 10/19/2024 2:19 PM, WM wrote:

    A doubled finite is finite.

    If all finites are doubled, then not all results can be in that set.
    Either more finites appear, or the results are infinite.

    That's your intuition getting the better of you again.

    It is not intuition but fact that 2n > n.

    That's not where you're going wrong. You're confusing the doubling of a
    single number n, with the mapping of an infinite set N into the same set
    N.

    When "all finites" (by which I assume you mean natural numbers) are
    doubled, all the doubled numbers are finite, too.

    Maybe, but they are not all in the original set. Hence more natural
    numbers are necessary than have been doubled or mapped.

    You're confusing yourself by using intuition from finite sets and
    misapplying it to infinite sets. You're simply wrong, there.

    We're talking about a mapping between infinite sets, not a process.
    Nothing "appears".

    Say mapping or multiplying, it is a process. But that is not important. Important is only that in the image there are numbers which have not
    been mapped because 2n > n.

    That "because" attempts to connect two unrelated statements there are no "numbers which have not been mapped". If you think there are, give an
    example.

    If you think some of the doubled numbers are infinite, please give an
    example of a natural number which when doubled becomes infinite.

    In the image there are numbers which are not in the original set.

    There are not. If you think there are, give an example.

    If all natural numbers have been mapped, then there are larger numbers
    in the image. That is an unavoidable consequence.

    Larger than what? There are larger numbers in the image than any number
    in the image. There are larger numbers in the image than any number in
    the range. So what?

    These numbers cannot be seen, but that does not negate the consequence.

    These (dark) numbers don't exist, and there are no consequences to
    negate.

    If this is not accepted, then not all natural numbers of the image have
    been in the original set.

    <Sigh>. The sets are infinite. Your intuition is not.

    Regards, WM

    --
    Alan Mackenzie (Nuremberg, Germany).

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to Ross Finlayson on Sun Oct 20 09:36:06 2024
    On 10/19/2024 9:56 PM, Ross Finlayson wrote:
    On 10/19/2024 03:54 PM, Jim Burns wrote:
    On 10/19/2024 2:19 PM, WM wrote:
    On 19.10.2024 18:04, Jim Burns wrote:

    The least.upper.bound of finites is ω

    What ω is
    is such that
    k < ω  ⇔  k is a finite ordinal.

    No k exists such that
    k is a finite and k+1 > k is not a finite.

    No k exists such that
    k is an upper.bound of the finites.

    ω is but anything prior to ω isn't
    an upper.bound of the finites.

    ω is the least.upper.bound of the finites.

    The least.upper.bound of doubled finites is ω

    A doubled finite is finite.

    No k exists such that
    2⋅k is a finite and 2⋅k+2 > 2⋅k is not a finite.

    No k exists such that
    2⋅k is an upper.bound of the doubled finites.

    ω is but anything prior to ω isn't
    an upper.bound of the doubled finites.

    ω is the least.upper.bound of the doubled finites.

    Isn't mathematics true?

    It's impossible for there to be
    false mathematics.conclusions with
    true mathematics.hypotheses.

    How do we know they're impossible?

    Starting from [insert hypotheses],
    what must.be.true conclusions are known of?

    Why (exo.mathematically) choose
    [insert hypotheses] to be hypotheses?

    The omega is usually called
    a fixed-point besides being
    a limit ordinal, also it's called
    a compactification
    or one-point compactification of the integers
    for the most usual sort of idea of
    a non-standard countable model of integers
    with exactly one infinite member.

    Is there some sort of protocol
    which you (RF) recognize
    in order to talk about a thing
    and not.talk about things not.that?

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Sun Oct 20 16:26:16 2024
    On 20.10.2024 13:56, Richard Damon wrote:
    On 10/20/24 3:48 AM, WM wrote:

    All doubled numbers result in larger numbers. That cannot be avoided.
    ´
    But since there isn't a "largest" number,

    There is completeness.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Alan Mackenzie on Sun Oct 20 16:27:16 2024
    On 20.10.2024 14:20, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    Say mapping or multiplying, it is a process. But that is not important.
    Important is only that in the image there are numbers which have not
    been mapped because 2n > n.

    That "because" attempts to connect two unrelated statements there are no "numbers which have not been mapped". If you think there are, give an example.

    They can be proven by mathematics: Density reduced, fixed number,
    interval enlarged.
    If this is not accepted, then not all natural numbers of the image have
    been in the original set.

    <Sigh>. The sets are infinite.

    Infinite does not mean inaccessible to logic.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to All on Sun Oct 20 16:28:06 2024
    On 20.10.2024 16:18, WM wrote:
    On 20.10.2024 14:56, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    The only alternative is that doubling numbers creates only doubled
    numbers.

    That's more or less what happens, except that numbers aren't
    "created".
    They just are.

    That's not what happens in mathematics.

    How would you know?

    I know that 2n > n.

    The mapping needs larger numbers than have been mapped.

    It does not. Each number in the image is in the range.

    Impossible. The density is halved in the image, the number of elements
    is the same, therefore the image is twice as large and half of its
    numbers are not in the original set.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to Ross Finlayson on Sun Oct 20 14:33:17 2024
    On 10/20/2024 12:30 PM, Ross Finlayson wrote:
    On 10/20/2024 06:36 AM, Jim Burns wrote:

    Is there some sort of protocol
    which you (RF) recognize
    in order to talk about a thing
    and not.talk about things not.that?

    Here there's freedom of speech it one of
    what we call constitutional liberties,

    I take your answer to mean
    "no, there is no such protocol".

    Surely,
    with your degree in mathematics,
    you understand that
    you are depriving yourself of
    the use of a powerful tool.

    To describe an indefinite one of
    an infinite domain is
    an infinite force.multiplier.

    But it needs to be
    only those in that domain,
    of that description.

    Loosen the restriction on the discussion,
    lose the force.multiplier.
    There isn't much useful to be said
    about things which _might or might not_
    be well.ordered. Etc.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Sun Oct 20 14:20:31 2024
    On 10/20/2024 3:48 AM, WM wrote:
    On 20.10.2024 00:54, Jim Burns wrote:
    On 10/19/2024 2:19 PM, WM wrote:

    A doubled finite is finite.

    If all finites are doubled,
    then not all results can be in that set.

    If all finites are doubled,
    then all results are in the set of finites.

    We know this by
    making claims true of a finite,
    making claims true of doubling a finite,
    appending only not.first.false claims which
    conclude with the claim that
    the doubled finite is finite.

    We know that the concluding claim is true
    because
    we see before us a finite sequence of claims which
    we see is without any first false claim.
    and
    a finite sequence of claims
    without any first false claim is
    a finite sequence of claims
    without any ▒▒▒▒▒ false claim,
    including the concluding.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Sun Oct 20 14:50:18 2024
    On 10/20/2024 3:40 AM, WM wrote:
    On 20.10.2024 00:08, Jim Burns wrote:
    On 10/19/2024 2:28 PM, WM wrote:

    The contradiction is independent of infinity.
    It is your claim that

    infinitely.many exchanges in an infinite set
    (vanishing Bob)

    Every exchange is _one_ lossless exchange.

    It is my claim that
    infinitely.many exchanges in an infinite set
    can result in the loss of one of them.

    1 is not infinite.

    exchanging two objects
    can result in the loss of one of them.

    I fixed that for you.

    It is nonsense like:
    ∀n ∈ ℕ:
    |{2, 4, 6, ..., 2n}|/|{1, 2, 3, 4, 5, 6, ..., 2n} = 1/2
    but
    |{2, 4, 6, ...}|/|{1, 2, 3, 4, 5, 6, ...} = 1.

    A finite set can be ordered such that
    each subset holds its top and bottom or is empty.

    An infinite set is not finite.

    ∀n ∈ ℕ:
    finite {2,4,6,...,2n}
    finite {1,2,3,4,5,6,...,2n}

    infinite {2,4,6,...}
    infinite {1,2,3,4,5,6,...}

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Jim Burns on Sun Oct 20 21:24:27 2024
    On 20.10.2024 20:20, Jim Burns wrote:
    On 10/20/2024 3:48 AM, WM wrote:
    On 20.10.2024 00:54, Jim Burns wrote:
    On 10/19/2024 2:19 PM, WM wrote:

    A doubled finite is finite.

    If all finites are doubled,
    then not all results can be in that set.

    If all finites are doubled,
    then all results are in the set of finites.

    But not in the mapped or multiplied range.

    We know this by

    reduced density, constant number, enlarged image.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Richard Damon on Sun Oct 20 21:15:52 2024
    On 20.10.2024 13:55, Richard Damon wrote:
    On 10/20/24 3:54 AM, WM wrote:
    On 20.10.2024 04:48, Richard Damon wrote:

    Which is what builds the actual infinite set. "Actual Infinity" is
    what you get when you conplete that construction process.

    If it is completed and then all numbers are doubled, what do you get
    then?

    A set of exactly the same size using only some of the numbers of the
    original set.

    That is part of the property of the infinite.

    When a set of numbers is mapped then the number of numbers remains fixed.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Sun Oct 20 15:30:57 2024
    On 10/20/24 10:27 AM, WM wrote:
    On 20.10.2024 14:20, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    Say mapping or multiplying, it is a process. But that is not important.
    Important is only that in the image there are numbers which have not
    been mapped because 2n > n.

    That "because" attempts to connect two unrelated statements there are no "numbers which have not been mapped".  If you think there are, give an example.

    They can be proven by mathematics: Density reduced, fixed number,
    interval enlarged.
    If this is not accepted, then not all natural numbers of the image have
    been in the original set.

    <Sigh>.  The sets are infinite.

    Infinite does not mean inaccessible to logic.

    Regards, WM

    No, but it might mean inaccessable to logic that assumes finiteness.

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  • From Richard Damon@21:1/5 to All on Sun Oct 20 15:31:00 2024
    On 10/20/24 10:26 AM, WM wrote:
    On 20.10.2024 13:56, Richard Damon wrote:
    On 10/20/24 3:48 AM, WM wrote:

    All doubled numbers result in larger numbers. That cannot be avoided.
    ´
    But since there isn't a "largest" number,

    There is completeness.

    Regards, WM

    Which meaning of "Completeness" do you mean?

    You do understand that it has been proven that mathematics can't be
    "complete" in the sense that it can prove all true statements?

    For set theory, the "Completeness" of the Natural Numbers says there is
    a suprema of the set, and that is the value omega, it just isn't IN the
    set, and completeness doesn't require it to be in it.

    Not all infinite sets have a suprema or infima within them, so your talk
    of "completeness" doesn't actualy DO anything without explanation.

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  • From WM@21:1/5 to Jim Burns on Sun Oct 20 21:34:38 2024
    On 20.10.2024 20:50, Jim Burns wrote:
    On 10/20/2024 3:40 AM, WM wrote:
    On 20.10.2024 00:08, Jim Burns wrote:
    On 10/19/2024 2:28 PM, WM wrote:

    The contradiction is independent of infinity.
    It is your claim that

    infinitely.many exchanges in an infinite set
    (vanishing Bob)

    Every exchange is _one_ lossless exchange.

    It is my claim that
    infinitely.many exchanges in an infinite set
    can result in the loss of one of them.
    1 is not infinite.

    Every exchange is one and has to obey logic.

    If your claim was acceptable, then every enumeration of an infinite set
    could lose elements. Therefore it is rejected as detrimental to set theory.

    It is nonsense like:
    ∀n ∈ ℕ:
    |{2, 4, 6, ..., 2n}|/|{1, 2, 3, 4, 5, 6, ..., 2n} = 1/2
    but
    |{2, 4, 6, ...}|/|{1, 2, 3, 4, 5, 6, ...} = 1.

    A finite set can be ordered such that
    each subset holds its top and bottom or is empty.

    If it did not contain dark elements and in spite of that was complete,
    the same could be done there.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Sun Oct 20 21:39:45 2024
    On 20.10.2024 21:30, Richard Damon wrote:

    No, the alternative is that infinite sets work like infinite sets
    without an end, and that this means that some of the properties of
    finite sets don't hold for infinite sets.

    When the density is reduced and the number remains the same, then the
    size is increased. Not accepting this means violating mathematics.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From Jim Burns@21:1/5 to All on Sun Oct 20 15:42:26 2024
    On 10/20/2024 3:24 PM, WM wrote:
    On 20.10.2024 20:20, Jim Burns wrote:
    On 10/20/2024 3:48 AM, WM wrote:
    On 20.10.2024 00:54, Jim Burns wrote:
    On 10/19/2024 2:19 PM, WM wrote:

    A doubled finite is finite.

    If all finites are doubled,
    then not all results can be in that set.

    If all finites are doubled,
    then all results are in the set of finites.

    But not in the mapped or multiplied range.

    If n is countable.to from 0
    then ⟨0,1,...,n-1,n⟩ exists

    If ⟨0,1,...,n-1,n⟩ exists
    then ⟨n,n+1,...,2⋅n-1,2⋅n⟩ exists

    If ⟨0,1,...,n-1,n⟩ and ⟨n,n+1,...,2⋅n-1,2⋅n⟩ exist
    then ⟨0,1,...,n-1,n,n+1,...,2⋅n-1,2⋅n⟩ exists

    If ⟨0,1,...,n-1,n,n+1,...,2⋅n-1,2⋅n⟩ exists
    then 2⋅n is countable.to from 0

    ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯
    If n is countable.to from 0
    then 2⋅n is countable.to from 0

    If all finites are doubled,
    then all results are in the set of finites.

    But not in the mapped or multiplied range.

    If n is countable.to from 0
    then 2⋅n is countable.to from 0

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Richard Damon on Sun Oct 20 21:44:38 2024
    On 20.10.2024 21:31, Richard Damon wrote:
    On 10/20/24 3:15 PM, WM wrote:

    When a set of numbers is mapped then the number of numbers remains fixed.

    Right, so the "ALeph_0" Natural Numbers were mapped to the Even Natural Numbers, a set with exactly that same size, which is also a proper
    subset of it.

    I did not talk about cardinality which is nonsense but about the real
    number of elements, Cantor called it reality.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Richard Damon on Sun Oct 20 21:50:20 2024
    On 20.10.2024 21:31, Richard Damon wrote:
    On 10/20/24 10:26 AM, WM wrote:
    On 20.10.2024 13:56, Richard Damon wrote:
    On 10/20/24 3:48 AM, WM wrote:

    All doubled numbers result in larger numbers. That cannot be avoided.
    ´
    But since there isn't a "largest" number,

    There is completeness.

    Which meaning of "Completeness" do you mean?

    For set theory, the "Completeness" of the Natural Numbers says there is
    a suprema of the set

    Completes means that all elements of a set are existing. The natural
    numbers for instance are invariable. The subset of even numbers and the
    subset of odd numbers are two halves having only half of the reality of
    the natural numbers.

    Regards, WM

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  • From WM@21:1/5 to Jim Burns on Sun Oct 20 21:54:39 2024
    On 20.10.2024 21:42, Jim Burns wrote:
    On 10/20/2024 3:24 PM, WM wrote:
    On 20.10.2024 20:20, Jim Burns wrote:
    On 10/20/2024 3:48 AM, WM wrote:
    On 20.10.2024 00:54, Jim Burns wrote:
    On 10/19/2024 2:19 PM, WM wrote:

    A doubled finite is finite.

    If all finites are doubled,
    then not all results can be in that set.

    If all finites are doubled,
    then all results are in the set of finites.

    But not in the mapped or multiplied range.

    If n is countable.to from 0
    then ⟨0,1,...,n-1,n⟩ exists

    If ⟨0,1,...,n-1,n⟩ exists
    then ⟨n,n+1,...,2⋅n-1,2⋅n⟩ exists

    If ⟨0,1,...,n-1,n⟩ and ⟨n,n+1,...,2⋅n-1,2⋅n⟩ exist
    then ⟨0,1,...,n-1,n,n+1,...,2⋅n-1,2⋅n⟩ exists

    If ⟨0,1,...,n-1,n,n+1,...,2⋅n-1,2⋅n⟩ exists
    then 2⋅n is countable.to from 0

    ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯
    If n is countable.to from 0
    then 2⋅n is countable.to from 0

    If all finites are doubled,
    then all results are in the set of finites.

    But not in the mapped or multiplied range.

    If n is countable.to from 0
    then 2⋅n is countable.to from 0

    Nevertheless 2n is not in the set {1, ..., n}.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From Jim Burns@21:1/5 to All on Sun Oct 20 16:23:31 2024
    On 10/20/2024 3:54 PM, WM wrote:
    On 20.10.2024 21:42, Jim Burns wrote:
    On 10/20/2024 3:24 PM, WM wrote:
    On 20.10.2024 20:20, Jim Burns wrote:
    On 10/20/2024 3:48 AM, WM wrote:
    On 20.10.2024 00:54, Jim Burns wrote:

    A doubled finite is finite.

    If all finites are doubled,
    then not all results can be in that set.

    If all finites are doubled,
    then all results are in the set of finites.

    But not in the mapped or multiplied range.

    If n is countable.to from 0
    then ⟨0,1,...,n-1,n⟩ exists

    If ⟨0,1,...,n-1,n⟩ exists
    then ⟨n,n+1,...,2⋅n-1,2⋅n⟩ exists

    If ⟨0,1,...,n-1,n⟩ and ⟨n,n+1,...,2⋅n-1,2⋅n⟩ exist
    then ⟨0,1,...,n-1,n,n+1,...,2⋅n-1,2⋅n⟩ exists

    If ⟨0,1,...,n-1,n,n+1,...,2⋅n-1,2⋅n⟩ exists
    then 2⋅n is countable.to from 0

    ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯
    If n is countable.to from 0
    then 2⋅n is countable.to from 0

    If all finites are doubled,
    then all results are in the set of finites.

    But not in the mapped or multiplied range.

    If n is countable.to from 0
    then 2⋅n is countable.to from 0

    Nevertheless
    2n is not in the set {1, ..., n}.

    2⋅n is in the set of finites.
    {1,...,n} isn't the set of finites.

    A doubled finite is finite.

    If n is in the set ℕ≠{1,...,n} of finites,
    then 2⋅n is in the set ℕ≠{1,...,n} of finites.

    --- SoupGate-Win32 v1.05
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  • From Moebius@21:1/5 to All on Sun Oct 20 22:19:54 2024
    Am 20.10.2024 um 21:59 schrieb Chris M. Thomasson:
    On 10/20/2024 12:54 PM, WM wrote:

    2n is not in the set {1, ..., n}.

    Incredible!

    I guess the reason is that for all n e IN: n < 2n and that all elements
    in {1, ..., n} are <= n.

    On the other hand, for all n in {1, 2, 3, ...} 2n is in the set {1, 2,
    3, ...}.

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  • From WM@21:1/5 to Moebius on Sun Oct 20 22:37:52 2024
    On 20.10.2024 22:19, Moebius wrote:

    On the other hand, for all n in {1, 2, 3, ...} 2n is in the set {1, 2,
    3, ...}.

    When the elements of the set are multiplied by 2, their density is
    halved, their reality remains the same, their extension is doubled.
    Therefore the image contains numbers which are not in the range.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Jim Burns on Sun Oct 20 22:42:45 2024
    On 20.10.2024 22:23, Jim Burns wrote:

    If n is in the set ℕ≠{1,...,n} of finites,
    then 2⋅n is in the set ℕ≠{1,...,n} of finites.

    When the elements of any set of naturals are multiplied by 2, their
    density is halved, their reality remains the same, their extension is
    doubled. Therefore the image contains numbers which are not in the range.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Sun Oct 20 17:54:54 2024
    On 10/20/24 3:44 PM, WM wrote:
    On 20.10.2024 21:31, Richard Damon wrote:
    On 10/20/24 3:15 PM, WM wrote:

    When a set of numbers is mapped then the number of numbers remains
    fixed.

    Right, so the "ALeph_0" Natural Numbers were mapped to the Even
    Natural Numbers, a set with exactly that same size, which is also a
    proper subset of it.

    I did not talk about cardinality which is nonsense but about the real
    number of elements, Cantor called it reality.

    Regards, WM


    And the number of elements is Aleph_0. The "number of elements" is what Cardinality measures.

    The problem comes when your set has more elelemnts than you have a
    number to rerpesent it, so "Number of ELements" becomes in incorrect
    term, until you extend the number system to include the infinite
    cardinal numbers to allow you to HAVE a "number" to use to express the
    "number of elements" in such a set.

    --- SoupGate-Win32 v1.05
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  • From Jim Burns@21:1/5 to All on Sun Oct 20 17:41:24 2024
    On 10/20/2024 4:42 PM, WM wrote:
    On 20.10.2024 22:23, Jim Burns wrote:

    If n is in the set ℕ≠{1,...,n} of finites,
    then 2⋅n is in the set ℕ≠{1,...,n} of finites.

    When the elements of any set of naturals are multiplied by 2,

    ∃{1,2,...,n-1,n} ⇔
    ∃{1,2,...,n-1,n,n+1,...,n+n-1,n+n}

    their density is halved,
    their reality remains the same,
    their extension is doubled.
    Therefore
    the image contains numbers which are not in the range.

    n ∈ ℕ ⇔ ∃{1,2,...,n-1,n}

    ∃{1,2,...,n-1,n} ⇔ ∃{1,2,...,n-1,n,n+1,...,n+n-1,n+1}

    ∃{1,2,...,n-1,n,n+1,...,n+n-1,n+1} ⇔ n+n ∈ ℕ

    n ∈ ℕ ⇔ n+n ∈ ℕ

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  • From joes@21:1/5 to All on Sun Oct 20 22:37:20 2024
    Am Sun, 20 Oct 2024 21:54:39 +0200 schrieb WM:
    On 20.10.2024 21:42, Jim Burns wrote:
    On 10/20/2024 3:24 PM, WM wrote:
    On 20.10.2024 20:20, Jim Burns wrote:
    On 10/20/2024 3:48 AM, WM wrote:
    On 20.10.2024 00:54, Jim Burns wrote:
    On 10/19/2024 2:19 PM, WM wrote:

    If all finites are doubled,
    then all results are in the set of finites.
    But not in the mapped or multiplied range.
    If n is countable.to from 0 then 2⋅n is countable.to from 0
    Nevertheless 2n is not in the set {1, ..., n}.
    We are not doubling a finite set. And 2n is in N for every n e N.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
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  • From joes@21:1/5 to All on Sun Oct 20 22:43:12 2024
    Am Sun, 20 Oct 2024 09:51:37 +0200 schrieb WM:
    On 20.10.2024 04:48, Richard Damon wrote:
    On 10/19/24 4:28 AM, WM wrote:
    On 18.10.2024 14:26, Jim Burns wrote:

    There is no ω such that the numbers are evenly.spaced between 0 and ω >>>> because that describes a finite ordinal, not ω
    What is immediately before ω if not finite numbers?
    The SET of Natural Numbers, not any one in particular.
    In this linearly ordered set there can only be one number before ω.
    The set N u {w} is not "linearly ordered".

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
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  • From joes@21:1/5 to All on Sun Oct 20 23:02:07 2024
    Am Sat, 19 Oct 2024 20:04:36 +0200 schrieb WM:
    On 19.10.2024 17:21, joes wrote:
    Am Sat, 19 Oct 2024 15:38:53 +0200 schrieb WM:
    On 19.10.2024 14:20, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 17.10.2024 23:22, Alan Mackenzie wrote:
    WM <wolfgang.mueckenheim@tha.de> wrote:

    rather than the standard mathematical concept of a mapping from N ->
    N where n is mapped to 2n. In this standard notion, all numbers are
    doubled, and we encounter no undoubled even natural numbers.
    Therefore the standard notion is wrong, if the natural numbers are a
    set.
    What else would it be.

    The interval occupied by the numbers is doubled when all numbers are
    multiplied by 2. If even the second half, which has not been
    multiplied,
    You just said all numbers are multiplied. What is the "second half"?
    What is the second half of N? What do we get when we double that.

    Multiplying all n by 2 does not yield the same numbers.
    In part it does. All even numbers are also naturals.
    All even numbers which have been multiplied are natural numbers by definition. And by the same definition there were not more even natural numbers. But as the result there are more.
    Look, if we construct the set of powers of 2, by starting with 1 and multiplying (a finite number of times) by 2, this set is infinite
    (and also bijective to N by "decorating" with 2^). Any number from that
    set, when doubled, is also in that set.
    Same with the even numbers: they can be divided into the disjunct sets
    of the odd multiples of 2 and the multiples of 4. Every double of an
    even number is a multiple of 4.
    I'm sure you can generalise this.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
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  • From joes@21:1/5 to All on Sun Oct 20 23:04:50 2024
    Am Sat, 19 Oct 2024 10:23:05 +0200 schrieb WM:
    On 18.10.2024 03:26, Richard Damon wrote:
    On 10/17/24 2:46 PM, WM wrote:

    When doubling natural numbers we obtain even numbers which have not
    been doubled.
    Then your "Actual Infinity" wasn't actually infinte.
    As it must contain *ALL* the Natural Numbers to be that set.
    Therefore the double numbers are not natural but infinite.
    Then half of an infinite number is finite?

    2n > n is always true, in finite and in infinite sets.
    In FINITE or ORDINAL systems, and there 2n will be in the same actually
    infinite set as n.
    That is not possible if all natural numbers are doubled. The result
    covers the interval (0, ω*2) twice as large as the original one (0, ω).
    This destroys the ordering. If m>n, then 2m>2n.

    In Infinte Cardinal spaces (like Aleph_0 is in) 2n == n
    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
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  • From joes@21:1/5 to All on Sun Oct 20 23:06:16 2024
    Am Sat, 19 Oct 2024 13:10:20 +0200 schrieb WM:
    On 19.10.2024 12:56, Jim Burns wrote:

    What is immediately before ω
    No number exists immediately before ω
    Immediately or not: The number before ω is finite.
    There is no single number before w. Exactly all naturals are smaller
    than it.

    ω-1 can't be infinite and must be infinite.
    ω-1 is a natural number, but the dark numbers occupying almost all space between 0 and ω act like an infinity. We cannot look or count through
    them although all are finite, alas too large.
    Almost like w itself!

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From Moebius@21:1/5 to All on Mon Oct 21 01:22:51 2024
    Am 21.10.2024 um 01:06 schrieb joes:
    Am Sat, 19 Oct 2024 13:10:20 +0200 schrieb WM:

    ω-1 is a natural number

    Oh really, which one? :-)

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  • From Moebius@21:1/5 to All on Mon Oct 21 01:20:59 2024
    Am 21.10.2024 um 00:43 schrieb joes:
    Am Sun, 20 Oct 2024 09:51:37 +0200 schrieb WM:
    On 20.10.2024 04:48, Richard Damon wrote:
    On 10/19/24 4:28 AM, WM wrote:

    What is [...] before ω [...]?

    The [elements of the] SET of Natural Numbers, not any one in particular.

    Right.

    In this linearly ordered set there can only be one number before ω.

    There is NO ordinal number [immediately] before ω.

    The set N u {w} is not "linearly ordered".

    Well, actually, it is.

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  • From Moebius@21:1/5 to All on Mon Oct 21 01:34:10 2024
    Am 20.10.2024 um 21:59 schrieb Chris M. Thomasson:

    2 * any_natural_number = a_natural_number

    Good argument.

    Using math notation:

    An e IN: 2*n e IN.

    "For all n in IN (i.e. for all natural numbers n):
    2*n is in IN (is a natural number).

    Got it?

    Don't think so. WM is mad as a hatter.

    --- SoupGate-Win32 v1.05
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  • From Moebius@21:1/5 to All on Mon Oct 21 01:28:37 2024
    Am 21.10.2024 um 01:22 schrieb Moebius:
    Am 21.10.2024 um 01:06 schrieb joes:
    Am Sat, 19 Oct 2024 13:10:20 +0200 schrieb WM:

    ω-1 is a natural number

    Oh really, which one? :-)

    Hint: If ω-1 is a natural number, then (ω-1) + 1 is a natural number too.

    Hence (ω-1) + 1 can't be ω (since ω ISN'T a natural number).

    Mückenheim, Du bist für Mathematik zu doof und zu blöde.

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  • From Moebius@21:1/5 to All on Mon Oct 21 01:37:40 2024
    Am 20.10.2024 um 21:57 schrieb Chris M. Thomasson:

    Too much brain coolants? Wine perhaps?

    Psychosis perhaps?

    "Psychosis is a condition of the mind or psyche that results in
    difficulties determining what is real and what is not real. Symptoms may include delusions [...] among other features." (Wikipedia)

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  • From WM@21:1/5 to joes on Mon Oct 21 09:14:20 2024
    On 21.10.2024 01:04, joes wrote:
    Am Sat, 19 Oct 2024 10:23:05 +0200 schrieb WM:

    That is not possible if all natural numbers are doubled. The result
    covers the interval (0, ω*2) twice as large as the original one (0, ω).
    This destroys the ordering. If m>n, then 2m>2n.

    No, also the transfinite numbers are ordered. But for dark numbers the
    ordering is inaccessible anyhow.

    Regards, WM

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  • From WM@21:1/5 to joes on Mon Oct 21 09:17:27 2024
    On 21.10.2024 00:43, joes wrote:
    Am Sun, 20 Oct 2024 09:51:37 +0200 schrieb WM:
    On 20.10.2024 04:48, Richard Damon wrote:
    On 10/19/24 4:28 AM, WM wrote:
    On 18.10.2024 14:26, Jim Burns wrote:

    There is no ω such that the numbers are evenly.spaced between 0 and ω >>>>> because that describes a finite ordinal, not ω
    What is immediately before ω if not finite numbers?
    The SET of Natural Numbers, not any one in particular.
    In this linearly ordered set there can only be one number before ω.
    The set N u {w} is not "linearly ordered".

    It is. The dark numbers however have no accessible order.

    Regards, WM

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  • From WM@21:1/5 to Chris M. Thomasson on Mon Oct 21 10:02:22 2024
    On 21.10.2024 09:37, Chris M. Thomasson wrote:
    On 10/21/2024 12:14 AM, WM wrote:

    also the transfinite numbers are ordered. But for dark numbers the
    ordering is inaccessible anyhow.

    Why are the dark numbers unordered?

    They are certainly ordered, if they exist at all. But ee cannot discern
    their order.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Mon Oct 21 10:09:03 2024
    On 20.10.2024 23:54, Richard Damon wrote:
    half of an infinite set
    can be the same size as the whole,

    That is nonsense but it is not the point.
    The point is this: When doubling numbers, their distance increases in
    positive direction, hence larger numbers are in the image than in the range.

    If the range was complete, the image shows that the range was not complete.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Jim Burns on Mon Oct 21 10:12:55 2024
    On 20.10.2024 23:41, Jim Burns wrote:
    On 10/20/2024 4:42 PM, WM wrote:
    On 20.10.2024 22:23, Jim Burns wrote:

    If n is in the set ℕ≠{1,...,n} of finites,
    then 2⋅n is in the set ℕ≠{1,...,n} of finites.

    When the elements of any set of naturals are multiplied by 2,

    ∃{1,2,...,n-1,n}  ⇔
    ∃{1,2,...,n-1,n,n+1,...,n+n-1,n+n}

    their density is halved,
    their reality remains the same,
    their extension is doubled.
    Therefore
    the image contains numbers which are not in the range.

    n ∈ ℕ  ⇔  ∃{1,2,...,n-1,n}

    n is not among the dark numbers.

    ∃{1,2,...,n-1,n}  ⇔  ∃{1,2,...,n-1,n,n+1,...,n+n-1,n+1}

    ∃{1,2,...,n-1,n,n+1,...,n+n-1,n+1}  ⇔  n+n ∈ ℕ

    n ∈ ℕ  ⇔  n+n ∈ ℕ

    That and more holds for all definable numbers. But: When doubling
    numbers, their distance increases in positive direction, hence larger
    numbers are in the image than in the range. If the range was complete,
    the image shows that the range was not complete.

    Regards, WM

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  • From WM@21:1/5 to FromTheRafters on Mon Oct 21 10:14:07 2024
    On 20.10.2024 23:00, FromTheRafters wrote:
    WM formulated the question :


    Nevertheless 2n is not in the set {1, ..., n}.

    Neither is n+1, what's your point?

    When doubling numbers, their distance increases in positive direction,
    hence larger numbers are in the image than in the range.

    If the range was complete, the image shows that the range was not complete.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From joes@21:1/5 to All on Mon Oct 21 08:17:20 2024
    Am Mon, 21 Oct 2024 09:14:20 +0200 schrieb WM:
    On 21.10.2024 01:04, joes wrote:
    Am Sat, 19 Oct 2024 10:23:05 +0200 schrieb WM:

    That is not possible if all natural numbers are doubled. The result
    covers the interval (0, ω*2) twice as large as the original one (0,
    ω).
    This destroys the ordering. If m>n, then 2m>2n.
    No, also the transfinite numbers are ordered. But for dark numbers the ordering is inaccessible anyhow.
    Yes, but the ordinals up to w*2 are two consecutive infinities.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
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  • From joes@21:1/5 to All on Mon Oct 21 08:21:31 2024
    Am Mon, 21 Oct 2024 10:14:07 +0200 schrieb WM:
    On 20.10.2024 23:00, FromTheRafters wrote:
    WM formulated the question :


    Nevertheless 2n is not in the set {1, ..., n}.
    Neither is n+1, what's your point?
    When doubling numbers, their distance increases in positive direction,
    hence larger numbers are in the image than in the range.
    If the range was complete, the image shows that the range was not
    complete.
    If the range really is complete, it needs to be infinite, so it can
    include the larger numbers. The image is never bigger than omega.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From WM@21:1/5 to joes on Mon Oct 21 11:59:00 2024
    On 21.10.2024 10:21, joes wrote:
    Am Mon, 21 Oct 2024 10:14:07 +0200 schrieb WM:

    If the range was complete, the image shows that the range was not
    complete.
    If the range really is complete, it needs to be infinite, so it can
    include the larger numbers.

    No. No set of numbers can include larger numbers.

    Regards, WM

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  • From WM@21:1/5 to FromTheRafters on Mon Oct 21 12:01:35 2024
    On 21.10.2024 11:21, FromTheRafters wrote:
    WM brought next idea :

    If the range was complete, the image shows that the range was not
    complete.

    What's the preimage?

    The range. It is a complete set by assumption. All its numbers can be
    mapped, some of them not to the preimage.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From Jim Burns@21:1/5 to All on Mon Oct 21 08:30:59 2024
    On 10/21/2024 6:01 AM, WM wrote:
    On 21.10.2024 11:21, FromTheRafters wrote:
    WM brought next idea :

    If the range was complete,
    the image shows that
    the range was not complete.

    What's the preimage?

    The range.
    It is a complete set by assumption.
    All its numbers can be mapped,
    some of them not to the preimage.

    How can you (WM) not.know what 'preimage' means?
    Do you not.have an internet connection?
    (You post by carrier pigeon?)

    The Mückenheim Revolution in one post:

    When you (WM) can't be bothered to find out
    what you are talking about (nearly always),
    you (WM) just blather away, full speed,
    and blame any blather.reality discrepancies
    on 'dark numbers'.

    --- SoupGate-Win32 v1.05
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  • From joes@21:1/5 to All on Mon Oct 21 12:41:51 2024
    Am Mon, 21 Oct 2024 11:59:00 +0200 schrieb WM:
    On 21.10.2024 10:21, joes wrote:
    Am Mon, 21 Oct 2024 10:14:07 +0200 schrieb WM:

    If the range was complete, the image shows that the range was not
    complete.
    If the range really is complete, it needs to be infinite, so it can
    include the larger numbers.
    No. No set of numbers can include larger numbers.
    Dude. An infinite set can contain an m>n for every n in it.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
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  • From Jim Burns@21:1/5 to All on Mon Oct 21 10:57:51 2024
    On 10/21/2024 4:12 AM, WM wrote:
    On 20.10.2024 23:41, Jim Burns wrote:
    On 10/20/2024 4:42 PM, WM wrote:
    On 20.10.2024 22:23, Jim Burns wrote:

    If n is in the set ℕ≠{1,...,n} of finites,
    then 2⋅n is in the set ℕ≠{1,...,n} of finites.

    When the elements of any set of naturals are multiplied by 2,

    ∃{1,2,...,n-1,n}  ⇔
    ∃{1,2,...,n-1,n,n+1,...,n+n-1,n+n}

    their density is halved,
    their reality remains the same,
    their extension is doubled.
    Therefore the image contains
    numbers which are not in the range.

    n ∈ ℕ  ⇔  ∃{1,2,...,n-1,n}

    n is not among the dark numbers.

    For each n ∈ ℕ, exists n+1 ∈ ℕ
    For each n ∈ ℕ, exists n-1 ∈ ℕ or n = 0
    For each S ⊆ ℕ, exists first.S ∈ S or S = {}

    There is a general rule not open to further discussion:
    Things which aren't natural numbers
    shouldn't be called natural numbers.

    ∃{1,2,...,n-1,n}  ⇔  ∃{1,2,...,n-1,n,n+1,...,n+n-1,n+1}

    ∃{1,2,...,n-1,n,n+1,...,n+n-1,n+1}  ⇔  n+n ∈ ℕ

    n ∈ ℕ  ⇔  n+n ∈ ℕ

    That and more holds for all definable numbers.

    Then your objection isn't to
    what we mean by 'natural numbers'.

    You propose dark numbers in order to object.

    Compare your activity to
    someone claiming to be an auto technician, who,
    seeing what they consider bad auto.behavior,
    disconnects the battery, in order that
    they can say "Your problem is the battery".

    ⎛ More importantly,
    ⎜ how you apparently think of axioms is reversed.
    ⎜ Axioms do not pop things into existence.
    ⎜ Axioms narrow what.it.is which
    ⎜ we are currently discussing.

    ⎜ Are they ordinals which we're discussing?
    ⎜⎛ Sets of these things are minimummed or empty.
    ⎜⎝ Each thing has a successor.

    ⎜ Are they finite ordinals which we're discussing?
    ⎜⎛ Sets of these things are minimummed or empty.
    ⎜⎜ Each thing has a successor.
    ⎜⎜ Each thing and each thing before it
    ⎝⎝ has a predecessor or is 0

    But:
    When doubling numbers,
    their distance increases in positive direction,
    hence larger numbers are in the image
    than in the range.

    n ∈ ℕ ⇔ n+n ∈ ℕ ∧ n+n > n

    If the range was complete,
    the image shows that the range was not complete.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to Ross Finlayson on Mon Oct 21 12:21:28 2024
    On 10/20/2024 8:20 PM, Ross Finlayson wrote:
    On 10/20/2024 11:33 AM, Jim Burns wrote:
    On 10/20/2024 12:30 PM, Ross Finlayson wrote:
    On 10/20/2024 06:36 AM, Jim Burns wrote:

    Is there some sort of protocol
    which you (RF) recognize
    in order to talk about a thing
    and not.talk about things not.that?

    Here there's freedom of speech it one of
    what we call constitutional liberties,

    I take your answer to mean
    "no, there is no such protocol".

    Surely,
    with your degree in mathematics,
    you understand that
    you are depriving yourself of
    the use of a powerful tool.

    Au contraire, to the contrary,
    I proffer that
    extending the relevant domain while keeping it
    a completely connected relevant domain
    _is_ a most proper and surmounting
    improvement of the discourse,
    to include the wider considerations of
    a topic in the _foundations_ of the theory,
    not merely a single theorem
    under a microscope.

    Microscopes and
    finite sequences of only not.first.false claims
    are powerful tools.

    Do you refuse to use microscopes or
    knowledge from microscopes?

    Anyways you still haven't picked "anti and only".

    I vaguely recall that
    you (RF) made some incorrect claims about
    Cantor's argument from anti.diagonals,
    and you asked for my participation in some way.
    Could you refresh my memory? TIA.

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  • From WM@21:1/5 to Jim Burns on Mon Oct 21 20:25:46 2024
    On 21.10.2024 14:30, Jim Burns wrote:
    On 10/21/2024 6:01 AM, WM wrote:

    How can you (WM) not.know what 'preimage' means?

    I have lectured analysis in German only. I assumed that preimage is the
    set mapped to the image.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to joes on Mon Oct 21 20:35:59 2024
    On 21.10.2024 14:41, joes wrote:
    Am Mon, 21 Oct 2024 11:59:00 +0200 schrieb WM:
    On 21.10.2024 10:21, joes wrote:
    Am Mon, 21 Oct 2024 10:14:07 +0200 schrieb WM:

    If the range was complete, the image shows that the range was not
    complete.
    If the range really is complete, it needs to be infinite, so it can
    include the larger numbers.
    No. No set of numbers can include larger numbers.
    An infinite set can contain an m>n for every n in it.

    Yes, but all the numbers which the set contains are either complete and
    fixed, or they are variable such that with each request larger numbers
    can be creazed.

    The latter case is called potential infinity. In case they are complete
    and fixed we can multiply them by 2 and find larger numbers.

    Regards, WM

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  • From Moebius@21:1/5 to All on Mon Oct 21 22:09:23 2024
    Am 21.10.2024 um 14:41 schrieb joes:

    Dude. An infinite set can contain an m > n for every n in it.

    Except in Mückenhausen that is.

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  • From Moebius@21:1/5 to All on Mon Oct 21 22:15:04 2024
    Am 21.10.2024 um 09:46 schrieb Chris M. Thomasson:

    .(0)1 says its the closest to zero.

    .(0)01 says that little shit is all hype!

    Definitely!

    (Hint: Don't ask .(0)001 !)

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  • From Moebius@21:1/5 to All on Mon Oct 21 22:17:00 2024
    Am 21.10.2024 um 09:37 schrieb Chris M. Thomasson:
    On 10/21/2024 12:14 AM, WM wrote:

    for dark numbers the ordering is inaccessible

    Why are the dark numbers unordered?

    Because they represent the dark side of the power!

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  • From Moebius@21:1/5 to All on Mon Oct 21 22:18:21 2024
    Am 21.10.2024 um 04:08 schrieb Chris M. Thomasson:
    On 10/20/2024 4:37 PM, Moebius wrote:
    Am 20.10.2024 um 21:57 schrieb Chris M. Thomasson:

    Too much brain coolants? Wine perhaps?

    Psychosis perhaps?

    "Psychosis is a condition of the mind or psyche that results in
    difficulties determining what is real and what is not real. Symptoms
    may include delusions [...] among other features." (Wikipedia)

    I hope not! I hope WM is just a troll, sharp as a fiddle.

    Nope. Dementia and/or psychosis (or some other form of a personality
    disorder). Sorry about that.

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  • From Moebius@21:1/5 to All on Mon Oct 21 22:19:53 2024
    Am 21.10.2024 um 04:04 schrieb Chris M. Thomasson:

    With a view to a kill:

    https://youtu.be/gkuUnnlAPZk

    Did you mean this one? :-o

    https://www.youtube.com/watch?v=dQw4w9WgXcQ

    --- SoupGate-Win32 v1.05
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  • From Moebius@21:1/5 to All on Mon Oct 21 22:22:17 2024
    Am 21.10.2024 um 03:58 schrieb Chris M. Thomasson:

    Makes me think of another song [...]

    https://youtu.be/y3hf0T4qpYg?list=RDy3hf0T4qpYg

    Christine Anne McVie (12 July 1943 – 30 November 2022)

    We are getting old, man.

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  • From Moebius@21:1/5 to All on Mon Oct 21 22:23:05 2024
    Am 21.10.2024 um 03:55 schrieb Chris M. Thomasson:
    On 10/19/2024 2:46 PM, Moebius wrote:

    "Branigan died in her sleep at her lodge in East Quogue, New York, on
    August 26, 2004, aged 52. The cause was attributed to a previously
    undiagnosed cerebral aneurysm."

    Ahhhh shit! God damn it. I know she passed away, but not the details!
    Grrrr! Damn it.

    Agree.

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  • From Jim Burns@21:1/5 to All on Mon Oct 21 16:34:03 2024
    On 10/21/2024 2:25 PM, WM wrote:
    On 21.10.2024 14:30, Jim Burns wrote:
    On 10/21/2024 6:01 AM, WM wrote:

    How can you (WM) not.know what 'preimage' means?

    I have lectured analysis in German only.
    I assumed that preimage is the set mapped to the image.

    It's not an improvement that you allegedly think that
    odd numbers are the result of doubling.

    On 10/21/2024 6:01 AM, WM wrote:
    On 21.10.2024 11:21, FromTheRafters wrote:

    What's the preimage?

    The range.
    It is a complete set by assumption.
    All its numbers can be mapped,
    some of them not to the preimage.

    That supports my theory that
    you (WM) just blather, almost unconsciously, and
    you expect to smooth over any of your blather
    which has embarrassed even you
    with more blather, but about dark numbers,
    because dark numbers are strategically obscure.

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Mon Oct 21 18:38:16 2024
    On 10/21/24 4:09 AM, WM wrote:
    On 20.10.2024 23:54, Richard Damon wrote:
    half of an infinite set can be the same size as the whole,

    That is nonsense but it is not the point.

    Nope, it is only "nonsense" to people stuck with finite thinking.

    The point is this: When doubling numbers, their distance increases in positive direction, hence larger numbers are in the image than in the
    range.

    Nope, because the input range is infinite.


    If the range was complete, the image shows that the range was not complete.

    Nope, just shows that you don't understand what "complete" means for an infinite set.


    Regards, WM


    Your logic has just been explosed to smithereens by a torpedo that came
    from the infinite domain and just annihilated your broken finite logic
    system.

    Sorry, you are just showing that you mind is unable to understand what "infinite" actually means.

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Jim Burns on Tue Oct 22 10:13:07 2024
    On 21.10.2024 22:34, Jim Burns wrote:
    On 10/21/2024 2:25 PM, WM wrote:
    On 21.10.2024 14:30, Jim Burns wrote:
    On 10/21/2024 6:01 AM, WM wrote:

    How can you (WM) not.know what 'preimage' means?

    I have lectured analysis in German only.
    I assumed that preimage is the set mapped to the image.

    It's not an improvement that you allegedly think that
    odd numbers are the result of doubling.

    I never did. Are your comprehension problems new?

    The range.

    A complete set of natural numbers.

    It is a complete set by assumption.
    All its numbers can be mapped,
    some of them not to the preimage.

    Not to the mapped set.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Chris M. Thomasson on Tue Oct 22 10:05:38 2024
    On 21.10.2024 21:38, Chris M. Thomasson wrote:
    On 10/21/2024 2:59 AM, WM wrote:
    No set of numbers can include larger numbers.

    What do you mean? Define a "large" number, say a natural one?

    No set of natural numbers can include *larger* numbers than it consists
    of. If the set is actually infinite, then all its numbers are there and
    can be doubled. Because of 2n > n larger numbers are created. If they
    are natural numbers they prove that the set originally was not complete
    because it did not contain the larger numbers.

    (In potential infinity this is not a problem because there is no
    completeness demanded).

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Richard Damon on Tue Oct 22 10:19:01 2024
    On 22.10.2024 00:38, Richard Damon wrote:
    On 10/21/24 4:09 AM, WM wrote:

    The point is this: When doubling numbers, their distance increases in
    positive direction, hence larger numbers are in the image than in the
    range.

    Nope, because the input range is infinite.

    But it is complete. That means it contains all numbers which can be mapped.

    If the range was complete, the image shows that the range was not
    complete.

    Nope, just shows that you don't understand what "complete" means for an infinite set.

    It means that all numbers are there and can be mapped.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From joes@21:1/5 to All on Tue Oct 22 09:39:01 2024
    Am Tue, 22 Oct 2024 10:05:38 +0200 schrieb WM:
    On 21.10.2024 21:38, Chris M. Thomasson wrote:
    On 10/21/2024 2:59 AM, WM wrote:

    No set of numbers can include larger numbers.
    What do you mean? Define a "large" number, say a natural one?
    No set of natural numbers can include *larger* numbers than it consists
    of.
    Namely, infinite numbers.

    If the set is actually infinite, then all its numbers are there and
    can be doubled. Because of 2n > n larger numbers are created.
    Contradiction to above.

    If they
    are natural numbers they prove that the set originally was not complete because it did not contain the larger numbers.
    It did.

    (In potential infinity this is not a problem because there is no
    completeness demanded).
    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
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  • From Moebius@21:1/5 to All on Tue Oct 22 15:19:11 2024
    Am 22.10.2024 um 11:39 schrieb joes:
    Am Tue, 22 Oct 2024 10:05:38 +0200 schrieb WM:

    Because of 2n > n larger numbers [bla bla bla]

    Mückenheim, die Menge IN enthält ALLE natürlichen Zahlen.

    Insbesondere enthält IN also zu jeder Zahl n auch die Zahl 2n = n + n.
    Diese Zahl ist genau n Schritte von n "entfernt", Du Depp.

    Hier ein Beispiel (für Merkbefreite):

    n = 3

    1 2 3
    ... 3 => 4 => 5 => 6 ...

    Das alles spielt sich für jede natürliche Zahl n "im Endlichen" ab.
    Daher ist es umso befremdlicher, dass Du inzwischen nicht einmal mehr
    DAS kapierst. (Ich denke daher, dass Du wirklich mal dringend einen
    Facharzt aufsuchen solltest!)

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Tue Oct 22 10:37:38 2024
    On 10/22/2024 4:13 AM, WM wrote:
    On 21.10.2024 22:34, Jim Burns wrote:
    On 10/21/2024 2:25 PM, WM wrote:
    On 21.10.2024 14:30, Jim Burns wrote:

    How can you (WM)
    not.know what 'preimage' means?

    I have lectured analysis in German only.
    I assumed that
    preimage is the set mapped to the image.

    It's not an improvement that
    you allegedly think that
    odd numbers are the result of doubling.

    I never did.
    Are your comprehension problems new?

    Perhaps I misunderstood you.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Moebius on Tue Oct 22 16:15:52 2024
    On 22.10.2024 15:19, Moebius wrote:
    Am 22.10.2024 um 11:39 schrieb joes:

    die Menge IN enthält ALLE natürlichen Zahlen.

    Dann kann ma ja alle verdoppeln.

    Insbesondere enthält IN also zu jeder Zahl n auch die Zahl 2n = n + n.
    Diese Zahl ist genau n Schritte von n "entfernt",

    Ja, die kann man aber auch verdoppeln.

    Das alles spielt sich für jede natürliche Zahl n "im Endlichen" ab.

    Das Endliche ist ja auch vollständig gefüllt. Aber alle diese Zahlen
    kann man verdoppeln.

    FF: Niemand bezweifelt, dass für jede natürliche Zahl n die Zahl 2n
    größer ist als n

    Wenn alle natürlichen Zahlen multipliziert werden, dann ist keine
    größere natürliche Zahl mehr vorhanden. Es gibt nämlich keine größere
    als alle. Aber 2n > n.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Tue Oct 22 12:03:22 2024
    On 10/22/2024 4:13 AM, WM wrote:
    On 21.10.2024 22:34, Jim Burns wrote:
    On 10/21/2024 2:25 PM, WM wrote:
    On 21.10.2024 14:30, Jim Burns wrote:
    On 10/21/2024 6:01 AM, WM wrote:

    The range.

    A complete set of natural numbers.

    ℕ is defined such that
    n ∈ ℕ ⇔ ∃{0,1,...,n-1,n}

    It is a complete set by assumption.
    All its numbers can be mapped,
    some of them not to the preimage.

    Not to the mapped set.

    The map we refer to is doubling.
    max.{0,1,...,n-1,n} ↦
    max.{0,1,...,n-1,n,n+1,...,n+n-1,n+n}

    Name the map 2×
    2×n = n+n

    ∀n ∈ ℕ:
    ∃{0,1,...,n-1,n}
    ∃{0,1,...,n-1,n,n+1,...,n+n-1,n+n}
    n+n = 2×n
    2×n ∈ ℕ

    ∀n ∈ ℕ: 2×n ∈ ℕ

    All its numbers can be mapped,

    Yes.
    ∃{0,1,...,n-1,n,n+1,...,n+n-1,n+n}

    some of them not to the preimage.

    No.
    2×n ∈ ℕ

    ----
    image 2×ℕ = {2×n: n∈ℕ}

    n′ ∈ ℕ\2×ℕ ⇔
    ∃{0,1,...,n-1,n,n+1,...,n+n-1,n+n,n+n+1}
    ∧ n′ = n+n+1
    'Bye, Bob.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Tue Oct 22 18:12:44 2024
    On 22.10.2024 18:03, Jim Burns wrote:
    On 10/22/2024 4:13 AM, WM wrote:

    ℕ is defined such that
    n ∈ ℕ  ⇔  ∃{0,1,...,n-1,n}

    Most of all it is an invariable set with all its elements existing and
    subject to doubling.

    ∀n ∈ ℕ:  2×n ∈ ℕ

    Not if all elements are existing before multiplication already.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Tue Oct 22 13:38:36 2024
    On 10/22/2024 12:12 PM, WM wrote:
    On 22.10.2024 18:03, Jim Burns wrote:

    ℕ is defined such that
    n ∈ ℕ  ⇔  ∃{0,1,...,n-1,n}

    Most of all
    it is an invariable set
    with all its elements existing
    and subject to doubling.

    ...and its double is in ℕ
    n ∈ ℕ ⇔
    ∃{0,1,...,n-1,n} ⇔
    ∃{0,1,...,n-1,n,n+1,...,n+n-1,n+n} ⇔
    n+n ∈ ℕ

    ∀n ∈ ℕ:  2×n ∈ ℕ

    Not if all elements are existing
    before multiplication already.

    The description of each element in ℕ
    requires its double to also be in ℕ

    ...not so different from the way in which
    the description of a right triangle
    requires
    the square of its longest side to equal
    the sum of the squares of the two other sides.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Tue Oct 22 20:34:28 2024
    On 22.10.2024 19:38, Jim Burns wrote:

    The description of each element in ℕ
    requires its double to also be in ℕ

    All that is in ℕ, according to your opinion, is accepted. If you find
    that the set ic complete, then it is doubled.

    ...not so different from the way in which
    the description of a right triangle
    requires
    the square of its longest side to equal
    the sum of the squares of the two other sides.

    Your above expression is in fact a very closely related one.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Tue Oct 22 20:56:54 2024
    Am Sun, 20 Oct 2024 21:34:38 +0200 schrieb WM:
    On 20.10.2024 20:50, Jim Burns wrote:
    On 10/20/2024 3:40 AM, WM wrote:
    On 20.10.2024 00:08, Jim Burns wrote:
    On 10/19/2024 2:28 PM, WM wrote:

    The contradiction is independent of infinity.
    It is your claim that
    infinitely.many exchanges in an infinite set (vanishing Bob)
    Every exchange is _one_ lossless exchange.
    It is my claim that infinitely.many exchanges in an infinite set can
    result in the loss of one of them.
    1 is not infinite.
    Every exchange is one and has to obey logic.
    Uncontroversial.
    If your claim was acceptable, then every enumeration of an infinite set
    could lose elements. Therefore it is rejected as detrimental to set
    theory.
    An enumeration is not an exchange.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Wed Oct 23 07:37:16 2024
    On 10/22/24 12:12 PM, WM wrote:
    On 22.10.2024 18:03, Jim Burns wrote:
    On 10/22/2024 4:13 AM, WM wrote:

    ℕ is defined such that
    n ∈ ℕ  ⇔  ∃{0,1,...,n-1,n}

    Most of all it is an invariable set with all its elements existing and subject to doubling.

    ∀n ∈ ℕ:  2×n ∈ ℕ

    Not if all elements are existing before multiplication already.

    Regards, WM

    IF not, then your actual infinity wasn't actually infinite, and you are admitting that you logic is just broken.

    Your "actual infinity" seems to be just an unimaginably large value, not infinite, as your actual infinity has an end, it has an element without
    a successor, so it isn't the set it claims to be.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Wed Oct 23 16:46:23 2024
    On 23.10.2024 13:37, Richard Damon wrote:
    On 10/22/24 12:12 PM, WM wrote:
    On 22.10.2024 18:03, Jim Burns wrote:

    ∀n ∈ ℕ:  2×n ∈ ℕ

    Not if all elements are existing before multiplication already.

    IF not, then your actual infinity wasn't actually infinite

    It is infinite like the fractions between 0 and 1. When doubling we get even-numerator fractions, some of which greater the 1.

    Your "actual infinity" seems to be just an unimaginably large value, not infinite, as your actual infinity has an end, it has an element without
    a successor, so it isn't the set it claims to be.

    The completed infinite cannot avoid to be complete. But it is infinite
    because the end cannot be determined because of the dark domain.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to Ross Finlayson on Wed Oct 23 11:05:09 2024
    On 10/22/2024 8:49 PM, Ross Finlayson wrote:
    On 10/21/2024 11:09 AM, Ross Finlayson wrote:
    On 10/21/2024 09:21 AM, Jim Burns wrote:
    On 10/20/2024 8:20 PM, Ross Finlayson wrote:

    Anyways you still haven't picked "anti and only".

    I vaguely recall that
    you (RF) made some incorrect claims about
    Cantor's  argument from anti.diagonals,
    and you asked for my participation in some way.
    Could you refresh my memory? TIA.

    Then I suggested that I would put anti-diagonal
    in one fist, only-diagonal in the other, then
    hide them behind my back and perhaps exchange
    them, then that you get to pick.

    You get to pick, was the idea, then I laughed
    and said that I had put them together, so,
    you get both or none.

    "You" here meaning anybody, ...,
    because it's a mathematical statement
    so is the same for anyone.

    Below or something like below
    is what I mean by
    Cantor's argument from anti.diagonals.

    Put d and anything else behind your back.
    Swap swap swap, pull them out.
    I pick both.
    One of those picked is in [0,1]ᴿ\f(ℕ)
    f(ℕ) ≠ [0,1]ᴿ
    If you think I'm wrong, say why.

    You're welcome.

    What was the point of that, Ross?

    ⎛ ℕ and [0,1]ᴿ have different cardinalities.

    ⎜⎛ Assume f: ℕ → ℝ is onto [0,1]ᴿ
    ⎜⎜ Assume ∀ᴿx ∈ [0,1]: ∃ᴺn: f(n) = x
    ⎜⎜
    ⎜⎜⎛ x@n means 'decimal digit n of positive real x'
    ⎜⎜⎜ x@n = ⌊(x⋅10ⁿ⁻¹-⌊x⋅10ⁿ⁻¹⌋)⋅10⌋
    ⎜⎜⎜
    ⎜⎜⎜ For real numbers x, y
    ⎜⎜⎜ if y@n = (x@n+5) mod 10
    ⎜⎜⎝ then |y-x| > 10⁻ⁿ and y ≠ x
    ⎜⎜
    ⎜⎜ Consider d ∈ [0,1]ᴿ such that
    ⎜⎜ ∀ᴺn: d@n = (f(n)@n+5) mod 10
    ⎜⎜
    ⎜⎜ ∀ᴺn: f(n) ≠ d
    ⎜⎜
    ⎜⎜ ∃ᴿx ∈ [0,1]: ∀ᴺn: f(n) ≠ x
    ⎜⎜ Proof: Let x = d
    ⎜⎜
    ⎜⎝ ¬∀ᴿx ∈ [0,1]: ∃ᴺn: f(n) = x

    ⎜ Therefore,
    ⎜ f: ℕ → ℝ is not onto [0,1]ᴿ
    ⎜ f: ℕ → ℝ does not biject ℕ and [0,1]ᴿ
    ⎜ No f: ℕ → ℝ bijects ℕ and [0,1]ᴿ

    ⎝ ℕ and [0,1]ᴿ do not have the same cardinality.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Wed Oct 23 14:39:04 2024
    On 10/22/2024 2:34 PM, WM wrote:
    On 22.10.2024 19:38, Jim Burns wrote:

    The description of each element in ℕ
    requires its double to also be in ℕ

    All that is in ℕ, according to your opinion,
    is accepted.

    In the ℕ which is our ℕ,
    n ∈ ℕ ⇔ ∃⟨0,1,...,n-1,n⟩

    In the ℕ which is our ℕ,
    for each j ∈ ℕ, ∃k ∈ ℕ: k = j+1
    for each j ∈ ℕ, j=0 ∨ ∃i ∈ ℕ: i+1=j
    for each S s ℕ, S = {} ∨ ∃m ∈ S: m=min.S

    Bob is in room 0 of our ℕ.Hotel
    Swap guests in 0⇄1, 1⇄2, 2⇄3, 3⇄4, ...
    After all swaps,
    there is no first room Bob is in.
    There is no ▒▒▒▒▒ room Bob is in.
    'Bye, Bob.

    If you find that the set ic complete,
    then it is doubled.

    In a WM.complete ℕ.Hotel,
    dark rooms are added for Bob to disappear to
    when he isn't in the visible rooms,
    repairing 'bye.Bob,
    leaving can't.see.Bob.

    However,
    none of these swaps 0⇄1, 1⇄2, 2⇄3, 3⇄4, ...
    move Bob to a dark room.
    Bob disappeared
    without going to a dark room.

    Adding dark rooms without Bob in them
    does not repair 'bye.Bob.

    There is no
    'bye.Bob.repairing WM.complete Hotel.

    ...not so different from the way in which
    the description of a right triangle
    requires
    the square of its longest side to equal
    the sum of the squares of the two other sides.

    Your above expression is in fact
    a very closely related one.

    The most mathematical action one can perform is
    to accept a result one sees is correct but
    does not want to be correct.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Wed Oct 23 23:04:48 2024
    On 10/23/24 10:46 AM, WM wrote:
    On 23.10.2024 13:37, Richard Damon wrote:
    On 10/22/24 12:12 PM, WM wrote:
    On 22.10.2024 18:03, Jim Burns wrote:

    ∀n ∈ ℕ:  2×n ∈ ℕ

    Not if all elements are existing before multiplication already.

    IF not, then your actual infinity wasn't actually infinite

    It is infinite like the fractions between 0 and 1. When doubling we get even-numerator fractions, some of which greater the 1.

    But from 0 to 1 isn't an infinite distance, thus doubling can put you
    out of that bound, and we can find a specific definaable number where
    that happens. It has a finite value for the upper limit.

    At 1/2, we double to hit the boundry.

    But, with the Natual Numbers, there isn't a value that is 1/2 of the
    "highest value" since there isn't a highest number that is a Natural
    Number, since every Natural Number has a successor that is higher.


    Your "actual infinity" seems to be just an unimaginably large value,
    not infinite, as your actual infinity has an end, it has an element
    without a successor, so it isn't the set it claims to be.

    The completed infinite cannot avoid to be complete. But it is infinite because the end cannot be determined because of the dark domain.

    No, the end cannot be determined, because it isn't there.

    There is nothing about being complete that means it needs to have an
    "end", that is just your broken finite thinking that has blown your
    logic to smithereens.

    Your "darkness" is just a method you use to hide your errors, but it
    can't actually be defined in a way to be used.

    Sorry, you are just proving how stupid you are.


    Regards, WM


    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Thu Oct 24 13:07:06 2024
    On 24.10.2024 05:04, Richard Damon wrote:
    On 10/23/24 10:46 AM, WM wrote:
    On 23.10.2024 13:37, Richard Damon wrote:
    On 10/22/24 12:12 PM, WM wrote:
    On 22.10.2024 18:03, Jim Burns wrote:

    ∀n ∈ ℕ:  2×n ∈ ℕ

    Not if all elements are existing before multiplication already.

    IF not, then your actual infinity wasn't actually infinite

    It is infinite like the fractions between 0 and 1. When doubling we
    get even-numerator fractions, some of which greater the 1.

    But from 0 to 1 isn't an infinite distance

    Measured in rational points it is infinite.

    At 1/2, we double to hit the boundry.

    There we have crossed many dark fractions already.
    Same at ω/2.

    But, with the Natual Numbers, there isn't a value that is 1/2 of the
    "highest value" since there isn't a highest number that is a Natural
    Number, since every Natural Number has a successor that is higher.

    It is claimed that there are all numbers. "That we have for instance
    when we consider the entirety of the numbers 1, 2, 3, 4, ... itself as a completed unit, or the points of a line as an entirety of things which
    is completely available. That sort of infinity is named actual
    infinite." [D. Hilbert: "Über das Unendliche", Mathematische Annalen 95
    (1925) p. 167]

    Your "actual infinity" seems to be just an unimaginably large value,
    not infinite, as your actual infinity has an end, it has an element
    without a successor, so it isn't the set it claims to be.

    The completed infinite cannot avoid to be complete. But it is infinite
    because the end cannot be determined because of the dark domain.

    No, the end cannot be determined, because it isn't there.

    There is nothing about being complete that means it needs to have an
    "end"

    Whatever, it is complete and all its numbers can be doubled. Some are
    resulting in larger numbers tha have been doubled.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Thu Oct 24 12:58:05 2024
    On 23.10.2024 20:39, Jim Burns wrote:
    On 10/22/2024 2:34 PM, WM wrote:
    On 22.10.2024 19:38, Jim Burns wrote:

    The description of each element in ℕ
    requires its double to also be in ℕ

    All that is in ℕ, according to your opinion,
    is accepted.

    In the ℕ which is our ℕ,
    n ∈ ℕ  ⇔  ∃⟨0,1,...,n-1,n⟩

    In the ℕ which is our ℕ,
    for each j ∈ ℕ, ∃k ∈ ℕ: k = j+1
    for each j ∈ ℕ, j=0  ∨  ∃i ∈ ℕ: i+1=j
    for each S s ℕ, S = {}  ∨  ∃m ∈ S: m=min.S

    All that is accepted and doubled.

    Bob is in room 0 of our ℕ.Hotel
    Swap guests in 0⇄1, 1⇄2, 2⇄3, 3⇄4, ...
    After all swaps,
    there is no first room Bob is in.
    There is no ▒▒▒▒▒ room Bob is in.
    'Bye, Bob.

    Obviously he has occupied a dark room.

    If you find that the set is complete,
    then it is doubled.

    In a WM.complete ℕ.Hotel,
    dark rooms are added for Bob to disappear to
    when he isn't in the visible rooms,
    repairing 'bye.Bob,
     leaving can't.see.Bob.

    However,
    none of these swaps 0⇄1, 1⇄2, 2⇄3, 3⇄4, ...
    move Bob to a dark room.

    No definable swap. But in case of completeness of definable rooms, Bob
    could pass all rooms (because in case of completeness all rooms exist)
    and occupy the last room (because in case of all rooms there is a last
    room necessary to establish completeness). This can only be prevented by
    dark rooms.

    Bob disappeared
    without going to a dark room.

    Impossible with an indestructible Bob.

    Adding dark rooms without Bob in them
    does not repair 'bye.Bob.

    There is no
    'bye.Bob.repairing WM.complete Hotel.

    There is no chance to repair mathematics when Bob disappears.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Thu Oct 24 13:58:38 2024
    On 24.10.2024 13:40, Richard Damon wrote:
    On 10/24/24 7:07 AM, WM wrote:
    On 24.10.2024 05:04, Richard Damon wrote:
    On 10/23/24 10:46 AM, WM wrote:
    On 23.10.2024 13:37, Richard Damon wrote:
    On 10/22/24 12:12 PM, WM wrote:
    On 22.10.2024 18:03, Jim Burns wrote:

    ∀n ∈ ℕ:  2×n ∈ ℕ

    Not if all elements are existing before multiplication already.

    IF not, then your actual infinity wasn't actually infinite

    It is infinite like the fractions between 0 and 1. When doubling we
    get even-numerator fractions, some of which greater the 1.

    But from 0 to 1 isn't an infinite distance

    Measured in rational points it is infinite.

    But values are not measured in "rational points".

    We can measure in rational points. Between two such points there are
    many dark ones, but that is the same between 0 and omega.

    It is claimed that there are all numbers. "That we have for instance
    when we consider the entirety of the numbers 1, 2, 3, 4, ... itself as
    a completed unit, or the points of a line as an entirety of things
    which is completely available. That sort of infinity is named actual
    infinite." [D. Hilbert: "Über das Unendliche", Mathematische Annalen
    95 (1925) p. 167]

    So?

    If you HAVE all the numberes, 1, 2, 3, 4, ... that set goes on FOREVER
    and doesn't have a upper end.

    But it has all. All can be doubled.

    If you have the COMPLETE unit, it doesn't have a highest number.

    But it has all. All can be doubled.

    Your operation of doubling the values on the line from 0 to 1 isn't
    operating the property that that set is infinite on, so doesn't follow
    the law of the infinite.

    Infinite sets can be mapped completely, according to set theory.

    There is nothing about being complete that means it needs to have an
    "end"

    Whatever, it is complete and all its numbers can be doubled. Some are
    resulting in larger numbers than have been doubled.

    Nope, as every number (A Natural Number) doubles to another number in
    that set (The Natural Numbers) so you never left the set.

    I take all of it.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Thu Oct 24 07:40:32 2024
    On 10/24/24 7:07 AM, WM wrote:
    On 24.10.2024 05:04, Richard Damon wrote:
    On 10/23/24 10:46 AM, WM wrote:
    On 23.10.2024 13:37, Richard Damon wrote:
    On 10/22/24 12:12 PM, WM wrote:
    On 22.10.2024 18:03, Jim Burns wrote:

    ∀n ∈ ℕ:  2×n ∈ ℕ

    Not if all elements are existing before multiplication already.

    IF not, then your actual infinity wasn't actually infinite

    It is infinite like the fractions between 0 and 1. When doubling we
    get even-numerator fractions, some of which greater the 1.

    But from 0 to 1 isn't an infinite distance

    Measured in rational points it is infinite.

    But values are not measured in "rational points".

    So, your arguement doesn't make sense.


    At 1/2, we double to hit the boundry.

    There we have crossed many dark fractions already.
    Same at ω/2.

    But, with the Natual Numbers, there isn't a value that is 1/2 of the
    "highest value" since there isn't a highest number that is a Natural
    Number, since every Natural Number has a successor that is higher.

    It is claimed that there are all numbers. "That we have for instance
    when we consider the entirety of the numbers 1, 2, 3, 4, ... itself as a completed unit, or the points of a line as an entirety of things which
    is completely available. That sort of infinity is named actual
    infinite." [D. Hilbert: "Über das Unendliche", Mathematische Annalen 95 (1925) p. 167]

    So?

    If you HAVE all the numberes, 1, 2, 3, 4, ... that set goes on FOREVER
    and doesn't have a upper end.

    If you have the COMPLETE unit, it doesn't have a highest number.

    Your operation of doubling the values on the line from 0 to 1 isn't
    operating the property that that set is infinite on, so doesn't follow
    the law of the infinite.


    Your "actual infinity" seems to be just an unimaginably large value,
    not infinite, as your actual infinity has an end, it has an element
    without a successor, so it isn't the set it claims to be.

    The completed infinite cannot avoid to be complete. But it is
    infinite because the end cannot be determined because of the dark
    domain.

    No, the end cannot be determined, because it isn't there.

    There is nothing about being complete that means it needs to have an
    "end"

    Whatever, it is complete and all its numbers can be doubled. Some are resulting in larger numbers tha have been doubled.

    Nope, as every number (A Natural Number) doubles to another number in
    that set (The Natural Numbers) so you never left the set.

    It may seem agaist your intuition, but that is because you are only
    thinking in terms of finite sets.

    Regards, WM



    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Thu Oct 24 13:34:48 2024
    On 10/24/2024 6:58 AM, WM wrote:
    On 23.10.2024 20:39, Jim Burns wrote:
    On 10/22/2024 2:34 PM, WM wrote:
    On 22.10.2024 19:38, Jim Burns wrote:

    The description of each element in ℕ
    requires its double to also be in ℕ

    All that is in ℕ, according to your opinion,
    is accepted.

    In the ℕ which is our ℕ,
    n ∈ ℕ  ⇔  ∃⟨0,1,...,n-1,n⟩

    In the ℕ which is our ℕ,
    for each j ∈ ℕ, ∃k ∈ ℕ: k = j+1
    for each j ∈ ℕ, j=0  ∨  ∃i ∈ ℕ: i+1=j
    for each S s ℕ, S = {}  ∨  ∃m ∈ S: m=min.S

    All that is accepted and doubled.

    The subset of those with a double not.in ℕ
    holds no minimum.

    We see above that
    the only subset which holds no minimum is {}

    The subset of those with a double not.in ℕ
    is {}

    The subset of those with a double in ℕ
    is ℕ

    Bob is in room 0 of our ℕ.Hotel
    Swap guests in 0⇄1, 1⇄2, 2⇄3, 3⇄4, ...
    After all swaps,
    there is no first room Bob is in.
    There is no ▒▒▒▒▒ room Bob is in.
    'Bye, Bob.

    Obviously he has occupied a dark room.

    ℕ\{0} holds the rooms Bob is swapped into.
    For each j ∈ ℕ\{0},
    there is a swap j-1⇄j into room j

    Are any dark? It doesn't matter.

    ℕ holds the rooms Bob is swapped out of.
    For each j ∈ ℕ,
    there is a swap j⇄j+1 out of room j

    There is no room which Bob is swapped into
    and which, after all swaps, he isn't swapped out of.
    If any of those rooms are dark,
    he isn't in those, either.

    If you find that the set is complete,
    then it is doubled.

    In a WM.complete ℕ.Hotel,
    dark rooms are added for Bob to disappear to
    when he isn't in the visible rooms,
    repairing 'bye.Bob,
      leaving can't.see.Bob.

    However,
    none of these swaps
    move Bob to a dark room.

    No definable swap.

    Definable or not.definable,
    I refer to Swaps: 0⇄1, 1⇄2, 2⇄3, 3⇄4, ...

    ⎜ for each j⇄j+1 ∈ Swaps, ∃k⇄k+1 ∈ Swaps: k = j+1
    ⎜ for each j⇄j+1 ∈ Swaps, j=0 ∨ ∃i⇄i+1 ∈ Swaps: i+1=j
    ⎜ for each S ⊆ Swaps, S = {} ∨ ∃m⇄m+1 ∈ S: m⇄m+1=min.S


    None of them moves Bob into a room which
    no other swap moves Bob out of.

    After all swaps,
    Bob is not in any room he was ever in.
    'Bye, Bob.

    Note well:
    After all _infinitely many_ swaps,
    Bob is not in any of _infinitely many_ rooms he was ever in.

    Infinite is different from finite.

    But in case of completeness of definable rooms,
    Bob could pass all rooms
    (because in case of completeness all rooms exist)
    and occupy the last room
    (because in case of all rooms
    there is a last room necessary to establish completeness).
    This can only be prevented by dark rooms.

    You are using 'complete' to say 'finite'.
    So be it: completeᵂᴹ == finiteⁿᵒᵗᐧᵂᴹ

    If any set B is incompleteᵂᴹ (Bob can disappear from B)
    then any superset A ⊇ B is incompleteᵂᴹ
    Bob disappearing from B disappears Bob from A

    Adding dark rooms to an incompleteᵂᴹ ℕ.Hotel
    produces a superset of ℕ.Hotel rooms
    which are still incompleteᵂᴹ
    from which Bob can still disappear.

    Bob disappeared
    without going to a dark room.

    Impossible with an indestructible Bob.

    ...in finiteⁿᵒᵗᐧᵂᴹ completeᵂᴹ sets.

    {j,j+1} is finiteⁿᵒᵗᐧᵂᴹ
    ℕ is infiniteⁿᵒᵗᐧᵂᴹ

    Adding dark rooms without Bob in them
    does not repair 'bye.Bob.

    There is no
    'bye.Bob.repairing WM.complete Hotel.

    There is no chance to repair mathematics
    when Bob disappears.

    The problem with Bob disappearing is that
    Bob disappearing is not a problem.
    It's not repairable because it's not broken.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Thu Oct 24 20:58:45 2024
    On 24.10.2024 19:34, Jim Burns wrote:
    On 10/24/2024 6:58 AM, WM wrote:

    All that is accepted and doubled.

    The subset of those with a double not.in ℕ
    holds no minimum.

    The whole set with all its numbers exists and can be mapped to the
    double numbers. That halves the density and doubles the covered interval.
    After all swaps,
    Bob is not in any room he was ever in.
    'Bye, Bob.

    After all swaps Bob is in a room, because there is nowhere an outlet.

    Note well:
    After all _infinitely many_ swaps,
    Bob is not in any of _infinitely many_ rooms he was ever in.

    Infinite is different from finite.

    Bobs cannot dissolve into nothing. If you despise logic, why do you
    maintain it with Cantor's procedures? If Bobs can disappear also other
    numbers can disappear.

    The problem with Bob disappearing is that
    Bob disappearing is not a problem.
    It's not repairable because it's not broken.

    Lossless exchanges remain lossless forever. But I can understand that
    you have to apply Freudian repression. Eyes wide shut.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Thu Oct 24 21:51:59 2024
    Am 24.10.2024 um 21:46 schrieb Chris M. Thomasson:
    On 10/24/2024 11:58 AM, WM wrote:

    [...] I can understand that
    you have to apply Freudian repression. Eyes wide shut.

    Yeah, a psychotic asshole full of shit can "understand" that, right.

    The ony thing he can't "understand" is that he's a(n) psychotic asshole
    full of shit.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Fri Oct 25 00:33:00 2024
    On 10/24/2024 2:58 PM, WM wrote:
    On 24.10.2024 19:34, Jim Burns wrote:
    On 10/24/2024 6:58 AM, WM wrote:

    All that is accepted and doubled.

    The subset of those with a double not.in ℕ
    holds no minimum.

    The whole set with all its numbers exists
    and can be mapped to the double numbers.

    Yes.
    ∃⟨0,1,...,n-1,n⟩ ⇒
    ∃⟨0,1,...,n-1,n,n+1,...,n+n-1,n+n⟩

    That halves the density
    and doubles the covered interval.

    No.
    ⟨0,1,...,n-1,n,n+1,...,n+n-1,n+n⟩ is finite.

    After all swaps,
    Bob is not in any room he was ever in.
    'Bye, Bob.

    After all swaps Bob is in a room,
    because there is nowhere an outlet.

    That Bob is not in any room he was ever in
    and there is nowhere an outlet
    proves the set is infinite.

    Note well:
    After all _infinitely many_ swaps,
    Bob is not in any of _infinitely many_ rooms
    he was ever in.

    Infinite is different from finite.

    Bobs cannot dissolve into nothing.

    Bob can be in an infinite set.

    The problem with Bob disappearing is that
    Bob disappearing is not a problem.
    It's not repairable because it's not broken.

    Lossless exchanges remain lossless forever.

    After all swaps,
    Bob is not in any room he was ever in.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to All on Fri Oct 25 13:42:45 2024
    Am 25.10.2024 um 06:33 schrieb Jim Burns:
    On 10/24/2024 2:58 PM, WM wrote:

    The whole set with all its numbers exists
    and can be mapped to the double numbers.

    Yes.
    ∃⟨0,1,...,n-1,n⟩  ⇒
    ∃⟨0,1,...,n-1,n,n+1,...,n+n-1,n+n⟩

    That halves the density
    and doubles the covered interval.

    No.
    ⟨0,1,...,n-1,n,n+1,...,n+n-1,n+n⟩ is finite.

    The whole interval (0, ω) is not finite, let alone the doubled interval.

    After all swaps,
    Bob is not in any room he was ever in.
    'Bye, Bob.

    After all swaps Bob is in a room,
    because there is nowhere an outlet.

    That Bob is not in any room he was ever in
    and there is nowhere an outlet
    proves the set is infinite.

    Bob of the matrices
    XOOO... XXOO... XXOO... XXXO... ... XXXX...
    XOOO... OOOO... XOOO... XOOO... ... XXXX...
    XOOO... XOOO... OOOO... OOOO... ... XXXX...
    XOOO... XOOO... XOOO... OOOO... ... XXXX... ...........................................
    has come to rest if all natural numbers have been applied.


    Bobs cannot dissolve into nothing.

    Bob can be in an infinite set.

    If the infinite set has been used completely for counting then Bob stays
    in a dark cell.

    The problem with Bob disappearing is that
    Bob disappearing is not a problem.
    It's not repairable because it's not broken.

    Lossless exchanges remain lossless forever.

    After all swaps,
    Bob is not in any room he was ever in.

    If all natnumbers can be issued, Bob is in a dark cell because further
    nothing happens.

    If you dislike this result, then you oppose to complete infinity.

    Regards, WM

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Fri Oct 25 10:53:44 2024
    On 10/25/2024 7:42 AM, WM wrote:
    Am 25.10.2024 um 06:33 schrieb Jim Burns:
    On 10/24/2024 2:58 PM, WM wrote:

    The whole set with all its numbers exists
    and can be mapped to the double numbers.

    Yes.
    ∃⟨0,1,...,n-1,n⟩  ⇒
    ∃⟨0,1,...,n-1,n,n+1,...,n+n-1,n+n⟩

    That halves the density
    and doubles the covered interval.

    No.
    ⟨0,1,...,n-1,n,n+1,...,n+n-1,n+n⟩ is finite.

    The whole interval (0, ω) is not finite,
    let alone the doubled interval.

    ⟦0,ω⦆ is the set of finite ordinals.
    That is the definition of finite ordinal.
    That is the definition of ω,
    the first ordinal after all finite ordinals.

    γ before ω: γ is finite.
    γ ∈ ⟦0,ω⦆ ⇒
    ∀β ∈ ⦅0,γ⟧: ∃α: α+1=β

    ω before ξ: ξ is not finite.
    ω ∈ ⦅0,ξ⟧ ⇒
    ¬∀β ∈ ⦅0,ξ⟧: ∃α: α+1=β

    (Keep in mind that ¬∃α: α+1=ω )

    Any third option, and {ω,ξ} isn't well.ordered.

    The "proof" of that is like
    the "proof" that 3 is between 2 and 4.
    It's what we mean by 'ω'.

    If you dislike this result,
    then you oppose to complete infinity.

    Why would I oppose your (WM's) complete infinity,
    merely because it waffles between
    pathologically.vagueness and incoherency?

    A better question is:
    why do you (WM) support it?

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Fri Oct 25 18:57:07 2024
    On 25.10.2024 16:53, Jim Burns wrote:
    On 10/25/2024 7:42 AM, WM wrote:

    The whole interval (0, ω) is not finite,
    let alone the doubled interval.

    ⟦0,ω⦆ is the set of finite ordinals.
    That is the definition of finite ordinal.
    That is the definition of ω,
    the first ordinal after all finite ordinals.

    Correct so far.

    γ before ω: γ is finite.
    γ ∈ ⟦0,ω⦆ ⇒
    ∀β ∈ ⦅0,γ⟧: ∃α: α+1=β

    ω before ξ: ξ is not finite.
    ω ∈ ⦅0,ξ⟧ ⇒
    ¬∀β ∈ ⦅0,ξ⟧: ∃α: α+1=β

    (Keep in mind that ¬∃α: α+1=ω )

    That is wrong in complete infinity.

    A better question is:
    why do you (WM) support it?

    I support it in order to show that your infinity is inconsistent.
    Example: Almost all unit fractions cannot be discerned by definable real numbers. If they are existing, they are indiscernible, i.e. dark.

    Regards, WM



    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Fri Oct 25 15:05:33 2024
    On 10/25/2024 12:57 PM, WM wrote:
    On 25.10.2024 16:53, Jim Burns wrote:
    On 10/25/2024 7:42 AM, WM wrote:

    The whole interval (0, ω) is not finite,
    let alone the doubled interval.

    ⟦0,ω⦆ is the set of finite ordinals.
    That is the definition of finite ordinal.
    That is the definition of ω,
    the first ordinal after all finite ordinals.

    Correct so far.

    γ before ω: γ is finite.
    γ ∈ ⟦0,ω⦆ ⇒
    ∀β ∈ ⦅0,γ⟧: ∃α: α+1=β

    ω before ξ: ξ is not finite.
    ω ∈ ⦅0,ξ⟧ ⇒
    ¬∀β ∈ ⦅0,ξ⟧: ∃α: α+1=β

    (Keep in mind that ¬∃α: α+1=ω )

    That is wrong in complete infinity.

    For ordinals,

    γ ∈ ⟦0,ω⦆ ⇒
    ∀β ∈ ⦅0,γ⟧: ∃α: α+1=β

    ∀β ∈ ⦅0,γ⟧: ∃α: α+1=β ⇒
    γ ∈ ⟦0,ω⦆

    If you want to discuss a "different" ω
    give it a different name.

    A better question is:
    why do you (WM) support it?

    I support it in order to show that
    your infinity is inconsistent.

    My infinity? You mean
    γ ∈ ⟦0,ω⦆ ⇔ ∀β ∈ ⦅0,γ⟧: ∃α: α+1=β
    ?
    How did you manage to show that
    _what I'm saying_ is inconsistent
    without even accepting that
    that is _what I'm saying_ ?

    Example:
    Almost all unit fractions
    cannot be discerned by definable real numbers.

    All unit fractions are reciprocals of
    positive countable.to.from.0 numbers.

    If they are existing,
    they are indiscernible, i.e. dark.

    If it is existing,
    it is a reciprocal of
    a positive countable.to.from.0 number.

    I haven't found a reason to discern.
    I am talking about each thing I am talking about.
    I am not.talking about each thing I am not.talking about.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Fri Oct 25 21:15:23 2024
    On 25.10.2024 21:05, Jim Burns wrote:
    On 10/25/2024 12:57 PM, WM wrote:

    A better question is:
    why do you (WM) support it?

    I support it in order to show that
    your infinity is inconsistent.

    My infinity? You mean
    γ ∈ ⟦0,ω⦆  ⇔  ∀β ∈ ⦅0,γ⟧: ∃α: α+1=β
    ?

    Mainly, among other points, the claim that all unit fractions can be
    defined and he claim that a Bob ca disappear in lossless exchanges.

    Almost all unit fractions
    cannot be discerned by definable real numbers.

    All unit fractions are reciprocals of
    positive countable.to.from.0 numbers.

    That does not change the facts.

    If they are existing,
    they are indiscernible, i.e. dark.

    If it is existing,
    it is a reciprocal of
    a positive countable.to.from.0 number.

    Most of them are indiscernible too.

    I haven't found a reason to discern.

    Don't you claim that every unit fraction can be discerned, i.e.
    separated from the smaller ones by a real number?

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to Ross Finlayson on Fri Oct 25 15:44:27 2024
    On 10/23/2024 1:38 PM, Ross Finlayson wrote:
    On 10/23/2024 08:05 AM, Jim Burns wrote:

    Put d and anything else behind your back.
    Swap swap swap, pull them out.
    I pick both.
    One of those picked is in [0,1]ᴿ\f(ℕ)
    f(ℕ) ≠ [0,1]ᴿ
    If you think I'm wrong, say why.

    Ah, the main thing I want you to notice,
    is, that the usual definition of "function",
    in the usual descriptive milieu of functions
    according to ZF set theory, is: a sub-set
    of the Cartesian product of left-hand-side
    and right-hand-side, or "Cartesian functions".

    Please consider me to be noticing that.

    So, then this "only diagonal", has that
    this function EF the n/d n->d d-> oo
    is NOT a Cartesian function:
    it simply does NOT have
    the same definition of function as
    being a Cartesian function, so
    all that results from Cantor-Schroeder-Bernstein
    about the transitivity of functions,
    that's built upon Cartesian functions:
    does not hold.

    Your non.Cartesian functions are NOT
    Cartesian functions. Okay.

    Other than that,
    what ARE your non.Cartesian functions?

    I hope that we can at least say that
    non.Cartesian functions
    are terms in a first.order language.
    But maybe they aren't.

    ⎛ <formula> ::=
    ⎜ <connective-formula> |
    ⎜ <quantifier-formula> |
    ⎜ <predicate-formula>

    ⎜ <predicate-formula> ::=
    ⎜ <1.ary-predicate> "(" <1.ary-argument> ")" |
    ⎜ <2.ary-predicate> "(" <2.ary-argument> ")" |
    ⎜ <3.ary-predicate> "(" <3.ary-argument> ")" |
    ⎜ ...

    ⎜ <1.ary-argument> ::= <term>

    ⎜ <k+1.ary-argument> ::= <k.ary-argument> "," <term>

    ⎜ <term> ::=
    ⎜ <variable> |
    ⎜ <constant> |
    ⎜ <function-term>

    ⎜ <function-term> ::=
    ⎜ <1.ary-function> "(" <1.ary-argument> ")" |
    ⎜ <2.ary-function> "(" <2.ary-argument> ")" |
    ⎜ <3.ary-function> "(" <3.ary-argument> ")" |
    ⎝ ...

    The semantics of first.order language L
    can be expressed by augmenting L with
    a constant.name for each object in the domain of discourse,
    perhaps with uncountably.many names.
    L⁺⁺ is augmented.L

    For k.ary function f
    for each k.ary sequence d₁,…,dₖ of domain.constants,
    there exists a unique range.constant r
    such that r = f(d₁,…,dₖ)

    I'm calling that a Fregean function.

    What you call a Cartesian function looks to me to be
    a Fregean function represented by a set.

    My best guess at what you mean by EF
    does not describe a Fregean function.

    If, by 'non.Cartesian function',
    you mean 'non.Fregean function', then
    I have no idea at all what you mean.

    [...] that the most direct mapping between
    discrete domain and continuous range is
    this totally simple continuum limit of n/d
    for natural integers as only d is not finite
    and furthermore
    is constant monotone strictly increasing
    with a bounded range in [a,b], an infinite domain.

    The continuum limit is not the continuum.
    I know:
    it sounds like it should be, but it isn't.

    The continuum limit is
    the spacing of a lattice approaching 0.

    If we are _already_ working in the continuum,
    the lattice points _in the limit_
    are sufficient to
    uniquely determine a _continuous_ function.
    For many purposes,
    uniquely determining a continuous function
    is sufficient for that purpose.

    But that isn't the continuum.
    In a continuum,
    each split has a point at the split,
    either one which ends the foresplit
    or one which begins the hindsplit
    _which is different_

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Fri Oct 25 23:21:01 2024
    On 10/25/2024 3:15 PM, WM wrote:
    On 25.10.2024 21:05, Jim Burns wrote:
    On 10/25/2024 12:57 PM, WM wrote:

    A better question is:
    why do you (WM) support it?

    I support it in order to show that
    your infinity is inconsistent.

    My infinity? You mean
    γ ∈ ⟦0,ω⦆  ⇔  ∀β ∈ ⦅0,γ⟧: ∃α: α+1=β
    ?

    Mainly, among other points, the claim that
    all unit fractions can be defined and he claim that
    a Bob ca disappear in lossless exchanges.

    The proof that all unit fractions can be defined
    is to define them
    as reciprocals of positive countable.to.from.0 numbers.

    That describes all of them and only them.
    More can be learned about all of them
    by augmenting that description with
    finitely.many only not.first.false claims,
    which must be true.

    Almost all unit fractions
    cannot be discerned by definable real numbers.

    All unit fractions are reciprocals of
    positive countable.to.from.0 numbers.

    That does not change the facts.

    Clearly, the disagreement of proofs
    does not change which claims you call facts.

    If they are existing,
    they are indiscernible, i.e. dark.

    If it is existing,
    it is a reciprocal of
    a positive countable.to.from.0 number.

    Most of them are indiscernible too.

    𝗖𝗹𝗮𝗶𝗺𝘀 about the discernible.or.indiscernible
    which are in a finite sequence of 𝗰𝗹𝗮𝗶𝗺𝘀 such that
    each 𝗰𝗹𝗮𝗶𝗺 is not.first.false
    must be true.

    I haven't found a reason to discern.

    Don't you claim that
    every unit fraction can be discerned, i.e.
    separated from the smaller ones by a real number?

    ½⋅(⅟n+⅟(n+1)) existing is discerning?
    I did not know that.

    Here is some of what I 𝗰𝗹𝗮𝗶𝗺:
    A finite sequence of only not.first.false 𝗰𝗹𝗮𝗶𝗺𝘀
    holds only true 𝗰𝗹𝗮𝗶𝗺𝘀.
    A true 𝗰𝗹𝗮𝗶𝗺 is not.first.false.
    𝗾 is not.first.false in ⟨𝗽 𝗽⇒𝗾 𝗾⟩
    Ordinals 𝕆 are well.ordered and successored
    Naturals ℕ are ordinals predecessored or 0
    such that all priors are predecessored or 0
    Integers ℤ are differences of naturals
    Rationals ℚ are quotients of integers (w/ non.0 denom)
    Reals ℝ are points between splits of the rationals.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Sat Oct 26 18:04:48 2024
    On 26.10.2024 05:21, Jim Burns wrote:
    On 10/25/2024 3:15 PM, WM wrote:

    Mainly, among other points, the claim that
    all unit fractions can be defined and the claim that
    a Bob can disappear in lossless exchanges.

    The proof that all unit fractions can be defined
    is to define them
    as reciprocals of positive countable.to.from.0 numbers.

    That describes all of them and only them.

    No, you falsely assume that all natnumbers can be defined.

    Almost all unit fractions
    cannot be discerned by definable real numbers.

    All unit fractions are reciprocals of
    positive countable.to.from.0 numbers.

    That does not change the facts.

    Clearly, the disagreement of proofs
    does not change which claims you call facts.

    Try to define more unit fractions than remain undefined.
    Try to understand the function NUF(x) which starts with 0 at 0 and after
    1 cannot change to 2 without pausing for an interval consisting of
    uncountably many real points.

    Don't you claim that
    every unit fraction can be discerned, i.e. separated from the smaller
    ones by a real number?

    ½⋅(⅟n+⅟(n+1)) existing is discerning?
    I did not know that.

    Giving a real number _by its digits or as a fraction_ which is between
    two unit fractions discerns the larger one and its larger predecessors.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to All on Sun Oct 27 08:38:35 2024
    Am 26.10.2024 um 21:35 schrieb Chris M. Thomasson:
    On 10/26/2024 9:04 AM, WM wrote:
    On 26.10.2024 05:21, Jim Burns wrote:
    On 10/25/2024 3:15 PM, WM wrote:

    Mainly, among other points, the claim that
    all unit fractions can be defined and the claim that
    a Bob can disappear in lossless exchanges.

    The proof that all unit fractions can be defined
    is to define them
    as reciprocals of positive countable.to.from.0 numbers.

    That describes all of them and only them.

    No, you falsely assume that all natnumbers can be defined.

    Huh? Confusing to me. Humm... Are you trying to suggest that a natural
    number can _not_ be a natural number?

    No. But most natnumbers cannot be defined. This can best be understood
    by the unit fractions.

    Try to understand the function NUF(x) = Number of Unit Fractions between
    0 and x, which starts with 0 at 0 or less and after NUF(x') = 1 cannot
    change to 2 without pausing for an interval consisting of uncountably
    many real points. The reason is this: ∀n ∈ ℕ: 1/n - 1/(n+1) > 0.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Sun Oct 27 07:38:47 2024
    On 10/27/24 3:38 AM, WM wrote:
    Am 26.10.2024 um 21:35 schrieb Chris M. Thomasson:
    On 10/26/2024 9:04 AM, WM wrote:
    On 26.10.2024 05:21, Jim Burns wrote:
    On 10/25/2024 3:15 PM, WM wrote:

    Mainly, among other points, the claim that
    all unit fractions can be defined and the claim that
    a Bob can disappear in lossless exchanges.

    The proof that all unit fractions can be defined
    is to define them
    as reciprocals of positive countable.to.from.0 numbers.

    That describes all of them and only them.

    No, you falsely assume that all natnumbers can be defined.

    Huh? Confusing to me. Humm... Are you trying to suggest that a natural
    number can _not_ be a natural number?

    No. But most natnumbers cannot be defined. This can best be understood
    by the unit fractions.

    So, what is the line between the DEFINED natural numbers and the "not
    defined"?


    Try to understand the function NUF(x) = Number of Unit Fractions between
    0 and x, which starts with 0 at 0 or less and after NUF(x') = 1 cannot
    change to 2 without pausing for an interval consisting of uncountably
    many real points. The reason is this: ∀n ∈ ℕ: 1/n - 1/(n+1) > 0.

    And isn't defined, since there is no finite number x, such that NUF(x)
    has the value of 1.

    Your logic just assumes the existance of something that doesn't exist,
    and thus is unsound, just like your own mind,


    Regards, WM

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  • From Moebius@21:1/5 to All on Sun Oct 27 14:54:51 2024
    Am 27.10.2024 um 08:38 schrieb WM:

    and after NUF(x') = 1

    There is no x' e IR such that NUF(x') = 1.

    Hint: For each and every x e IR, x <= 0: NUF(x) = 0
    and for each and every x e IR, x > 0: NUF(x) = aleph_0.

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  • From WM@21:1/5 to All on Sun Oct 27 17:07:11 2024
    Am 27.10.2024 um 16:55 schrieb Alan Mackenzie:
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 26.10.2024 05:21, Jim Burns wrote:

    The proof that all unit fractions can be defined
    is to define them
    as reciprocals of positive countable.to.from.0 numbers.

    That describes all of them and only them.

    No, you falsely assume that all natnumbers can be defined.

    Wrong. Natural numbers are defined as those defined by the Peano
    axioms. That is what we mean by "natural number". Anything which
    "can't be defined" this way isn't a natural number.

    Then there is no actual infinity.
    Proof: If infinity is actual, then all elements of the set of unit
    fractions exist. The function NUF(x) = Number of Unit Fractions between
    0 and x starts with 0 at 0. After NUF(x') = 1 it cannot change to
    NUF(x'') = 2 without pausing for an interval consisting of uncountably
    many real points. The reason is this: ∀n ∈ ℕ: 1/n - 1/(n+1) > 0. Of course x' and x'' are dark rational numbers, the smallest unit fractions.

    Regards, WM

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  • From Alan Mackenzie@21:1/5 to wolfgang.mueckenheim@tha.de on Sun Oct 27 15:55:06 2024
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 26.10.2024 05:21, Jim Burns wrote:

    The proof that all unit fractions can be defined
    is to define them
    as reciprocals of positive countable.to.from.0 numbers.

    That describes all of them and only them.

    No, you falsely assume that all natnumbers can be defined.

    Wrong. Natural numbers are defined as those defined by the Peano
    axioms. That is what we mean by "natural number". Anything which
    "can't be defined" this way isn't a natural number.

    [ .... ]

    Regards, WM

    --
    Alan Mackenzie (Nuremberg, Germany).

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  • From WM@21:1/5 to All on Sun Oct 27 17:12:23 2024
    Am 27.10.2024 um 14:54 schrieb Moebius:
    Am 27.10.2024 um 08:38 schrieb WM:

    and after NUF(x') = 1

    There is no x' e IR such that NUF(x') = 1.

    If all unit fractions are existing, then there is each one. Never two or
    more are at the same point. Hence there is a single one first.

    Hint: For each and every x e IR, x <= 0: NUF(x) = 0
    and for each and every x e IR, x > 0: NUF(x) = aleph_0.

    That is blatantly wrong because it would require that ℵo unit fractions
    exist between 0 and each and every x > 0, i.e., the open interval (0, 1].

    Regards, WM

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  • From WM@21:1/5 to All on Sun Oct 27 17:15:48 2024
    Am 27.10.2024 um 14:39 schrieb FromTheRafters:

    If 'not defined' could be a proper subset of the naturals, then there
    would be a first such 'not defined' in that subset. Of course WM can't substantiate any of his wild claims.

    Proof: If infinity is actual, then all elements of the set of unit
    fractions exist. The function NUF(x) = Number of Unit Fractions between
    0 and x starts with 0 at 0. After NUF(x') = 1 it cannot change to
    NUF(x'') = 2 without pausing for an interval consisting of uncountably
    many real points. The reason is this: ∀n ∈ ℕ: 1/n - 1/(n+1) > 0. Of course x' and x'' are dark rational numbers, the smallest unit fractions.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to All on Sun Oct 27 17:18:32 2024
    Am 27.10.2024 um 12:38 schrieb Richard Damon:
    On 10/26/24 12:04 PM, WM wrote:
    On 26.10.2024 05:21, Jim Burns wrote:
    On 10/25/2024 3:15 PM, WM wrote:

    Mainly, among other points, the claim that
    all unit fractions can be defined and the claim that
    a Bob can disappear in lossless exchanges.

    The proof that all unit fractions can be defined
    is to define them
    as reciprocals of positive countable.to.from.0 numbers.

    That describes all of them and only them.

    No, you falsely assume that all natnumbers can be defined.

    But they have been.

    Impossible. Proof: If infinity is actual, then all elements of the set
    of unit fractions exist. The function NUF(x) = Number of Unit Fractions
    between 0 and x starts with 0 at 0. After NUF(x') = 1 it cannot change
    to NUF(x'') = 2 without pausing for an interval consisting of
    uncountably many real points. The reason is this: ∀n ∈ ℕ: 1/n - 1/(n+1)
    0. Of course x' and x'' are dark rational numbers, the smallest unit
    fractions.

    Try to define more unit fractions than remain undefined.

    But none are.

    x' and X'' are two of many.

    Try to understand the function NUF(x) which starts with 0 at 0 and
    after 1 cannot change to 2 without pausing for an interval consisting
    of uncountably many real points.

    Bucause NUF(x) has an illogical definition, it assumes something that
    doesn't exist.

    It assumes that all unit fractions exist. If there are no dark numbers
    like x' and x'', then this is clearly wrong.

    Regards, WM

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  • From Moebius@21:1/5 to All on Sun Oct 27 18:05:43 2024
    Am 27.10.2024 um 17:07 schrieb WM:

    After NUF(x') = 1

    There is no x' e IR such that NUF(x') = 1.

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to All on Sun Oct 27 17:20:17 2024
    Am 27.10.2024 um 12:38 schrieb Richard Damon:
    On 10/27/24 3:38 AM, WM wrote:
    Am 26.10.2024 um 21:35 schrieb Chris M. Thomasson:
    On 10/26/2024 9:04 AM, WM wrote:
    On 26.10.2024 05:21, Jim Burns wrote:
    On 10/25/2024 3:15 PM, WM wrote:

    Mainly, among other points, the claim that
    all unit fractions can be defined and the claim that
    a Bob can disappear in lossless exchanges.

    The proof that all unit fractions can be defined
    is to define them
    as reciprocals of positive countable.to.from.0 numbers.

    That describes all of them and only them.

    No, you falsely assume that all natnumbers can be defined.

    Huh? Confusing to me. Humm... Are you trying to suggest that a
    natural number can _not_ be a natural number?

    No. But most natnumbers cannot be defined. This can best be understood
    by the unit fractions.

    So, what is the line between the DEFINED natural numbers and the "not defined"?

    There is no line. The defined natural numbers are a potentially infinite
    set, i.e. it can grow without end.

    Regards, WM

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  • From Moebius@21:1/5 to All on Sun Oct 27 18:08:32 2024
    Am 27.10.2024 um 17:12 schrieb WM:
    Am 27.10.2024 um 14:54 schrieb Moebius:

    Hint: For each and every x e IR, x <= 0: NUF(x) = 0
    and for each and every x e IR, x > 0: NUF(x) = aleph_0.

    That [...] would require that [for each and every x > 0]
    [there] exist [ℵo unit fractions] between 0 and x

    Exactly!

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  • From Moebius@21:1/5 to All on Sun Oct 27 18:09:26 2024
    Am 27.10.2024 um 17:15 schrieb WM:

    After NUF(x') = 1

    There is no x' e IR such that NUF(x') = 1.

    --- SoupGate-Win32 v1.05
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  • From Moebius@21:1/5 to All on Sun Oct 27 18:15:28 2024
    Am 27.10.2024 um 17:07 schrieb WM:

    course x' and x'' are [...] rational numbers, the smallest unit fractions.

    Really?

    Hint: If x' is a unit fraction then 1/(1/x' + 1) is a unit fraction
    which is smaller than x' and If x'' is a unit fraction then 1/(1/x'' +
    1) is a unit fraction which is smaller than x''. So neither x' nor x''
    can be "the smallest unit fraction".

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Sun Oct 27 14:00:30 2024
    On 10/27/24 12:12 PM, WM wrote:
    Am 27.10.2024 um 14:54 schrieb Moebius:
    Am 27.10.2024 um 08:38 schrieb WM:

    and after NUF(x') = 1

    There is no x' e IR such that NUF(x') = 1.

    If all unit fractions are existing, then there is each one. Never two or
    more are at the same point. Hence there is a single one first.

    No two together, but no need for one to be first at the large 'n' end of
    them.

    That is the nature of being infinite.


    Hint: For each and every x e IR, x <= 0: NUF(x) = 0
    and for each and every x e IR, x > 0: NUF(x) = aleph_0.

    That is blatantly wrong because it would require that ℵo unit fractions exist between 0 and each and every x > 0, i.e., the open interval (0, 1].

    Regards, WM


    Right, like is what happens.

    It may seem strange to a person stuck in finite logic, but is true when
    you understand how infinity works.

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  • From joes@21:1/5 to All on Sun Oct 27 18:04:38 2024
    Am Sun, 27 Oct 2024 17:12:23 +0100 schrieb WM:
    Am 27.10.2024 um 14:54 schrieb Moebius:
    Am 27.10.2024 um 08:38 schrieb WM:

    and after NUF(x') = 1
    There is no x' e IR such that NUF(x') = 1.

    Hint: For each and every x e IR, x <= 0: NUF(x) = 0 and for each and
    every x e IR, x > 0: NUF(x) = aleph_0.
    That is blatantly wrong because it would require that ℵo unit fractions exist between 0 and each and every x > 0,
    Which is obviously the case. If there were a real x with finitely many
    UFs less than it, the finitely many larger UFs... couldn't have
    infinitely many lesser UFs. Unless you claim finitely many UFs.

    i.e., the open interval (0, 1].
    No, you shifted the quantifiers again.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to All on Sun Oct 27 18:01:15 2024
    Am Sun, 27 Oct 2024 17:18:32 +0100 schrieb WM:
    Am 27.10.2024 um 12:38 schrieb Richard Damon:
    On 10/26/24 12:04 PM, WM wrote:
    On 26.10.2024 05:21, Jim Burns wrote:
    On 10/25/2024 3:15 PM, WM wrote:

    Mainly, among other points, the claim that all unit fractions can be >>>>> defined and the claim that a Bob can disappear in lossless
    exchanges.
    The proof that all unit fractions can be defined is to define them as
    reciprocals of positive countable.to.from.0 numbers.
    That describes all of them and only them.

    No, you falsely assume that all natnumbers can be defined.
    But they have been.
    Impossible.
    By the Peano axioms.

    Proof: If infinity is actual, then all elements of the set
    of unit fractions exist.
    What does it mean for an element of a set to not exist?
    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From WM@21:1/5 to FromTheRafters on Mon Oct 28 10:49:54 2024
    On 27.10.2024 20:01, FromTheRafters wrote:
    WM pretended :
    Am 27.10.2024 um 14:39 schrieb FromTheRafters:

    If 'not defined' could be a proper subset of the naturals, then there
    would be a first such 'not defined' in that subset. Of course WM
    can't substantiate any of his wild claims.

    Proof:

    Blah blah blah.

    Very substantial.

    Proof: If infinity is actual, then all elements of the set of unit
    fractions exist. The function NUF(x) = Number of Unit Fractions between
    0 and x starts with 0 at 0. After NUF(x') = 1 it cannot change to
    NUF(x'') = 2 without pausing for an interval consisting of uncountably
    many real points. The reason is this: ∀n ∈ ℕ: 1/n - 1/(n+1) > 0. Of course x' and x'' are dark rational numbers, the smallest unit fractions.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to joes on Mon Oct 28 11:03:22 2024
    On 27.10.2024 19:04, joes wrote:
    Am Sun, 27 Oct 2024 17:12:23 +0100 schrieb WM:
    Am 27.10.2024 um 14:54 schrieb Moebius:
    Am 27.10.2024 um 08:38 schrieb WM:

    and after NUF(x') = 1
    There is no x' e IR such that NUF(x') = 1.

    Hint: For each and every x e IR, x <= 0: NUF(x) = 0 and for each and
    every x e IR, x > 0: NUF(x) = aleph_0.
    That is blatantly wrong because it would require that ℵo unit fractions
    exist between 0 and each and every x > 0,
    Which is obviously the case.

    Between two unit fractions there are uncountably many x > 0. Therefore
    your claim is wrong.

    If there were a real x with finitely many
    UFs less than it, the finitely many larger UFs... couldn't have
    infinitely many lesser UFs. Unless you claim finitely many UFs.

    There is a smallest UF. This is obviously the case if mathematics is
    correct: ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 .

    i.e., the open interval (0, 1].
    No, you shifted the quantifiers again.

    This is the definition of NUF(x): There are NUF(x) UFs between 0 and x.
    Not: For given x, there are infinitely many UFs.

    If you answer my question with clear mind, then you find: There is no UF smaller than all x > 0 because every UF is an x > 0 itself.

    Regards, WM

    Regards, WM

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  • From WM@21:1/5 to joes on Mon Oct 28 11:27:33 2024
    On 27.10.2024 19:01, joes wrote:
    Am Sun, 27 Oct 2024 17:18:32 +0100 schrieb WM:

    Proof: If infinity is actual, then all elements of the set
    of unit fractions exist.
    What does it mean for an element of a set to not exist?

    The set can be extended this element - like Hilbert's Hotel, when every
    guest multiplies his room number with 10^10^10000.

    Regards, WM

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  • From WM@21:1/5 to Moebius on Mon Oct 28 11:30:37 2024
    On 27.10.2024 18:05, Moebius wrote:
    Am 27.10.2024 um 17:07 schrieb WM:

    After NUF(x') = 1

    There is no x' e IR such that NUF(x') = 1.

    There is NUF(0) = 0. NUF(1) > 0. Hence NUF increases. This cannot happen
    by more than single unitfractions with interruptions, according to
    mathematics:
    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 .

    Regards, WM

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  • From WM@21:1/5 to Moebius on Mon Oct 28 11:32:53 2024
    On 27.10.2024 18:08, Moebius wrote:
    Am 27.10.2024 um 17:12 schrieb WM:
    Am 27.10.2024 um 14:54 schrieb Moebius:

    Hint: For each and every x e IR, x <= 0: NUF(x) = 0
    and for each and every x e IR, x > 0: NUF(x) = aleph_0.

    That [...] would require that [for each and every x > 0] [there] exist
    [ℵo unit fractions] between 0 and x

    Exactly!

    This requirement is impossible to satisfy because every unit fraction is
    an x > 0.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Mon Oct 28 11:36:18 2024
    On 27.10.2024 19:00, Richard Damon wrote:
    On 10/27/24 12:12 PM, WM wrote:
    Am 27.10.2024 um 14:54 schrieb Moebius:
    Am 27.10.2024 um 08:38 schrieb WM:

    and after NUF(x') = 1

    There is no x' e IR such that NUF(x') = 1.

    If all unit fractions are existing, then there is each one. Never two
    or more are at the same point. Hence there is a single one first.

    No two together, but no need for one to be first at the large 'n' end of them.

    NUF increases by 1 or more, but more would violate mathematics.

    Hint: For each and every x e IR, x <= 0: NUF(x) = 0
    and for each and every x e IR, x > 0: NUF(x) = aleph_0.

    That is blatantly wrong because it would require that ℵo unit
    fractions exist between 0 and each and every x > 0, i.e., the open
    interval (0, 1].

    Right, like is what happens.

    It may seem strange to a person stuck in finite logic, but is true when
    you understand how infinity works.

    This infinity between 0 and (0, 1] is not what I can accept.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Mon Oct 28 11:42:38 2024
    On 27.10.2024 19:00, Richard Damon wrote:

    So, you agree that there are no undefined Natural Numbers to be dark, as
    the set of that defined Natural Numbers grow without end.

    Nevertheless it remains finite and far less than the actual infinity.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Richard Damon on Mon Oct 28 11:40:46 2024
    On 27.10.2024 19:00, Richard Damon wrote:
    On 10/27/24 12:07 PM, WM wrote:
    Am 27.10.2024 um 16:55 schrieb Alan Mackenzie:
    WM <wolfgang.mueckenheim@tha.de> wrote:
    On 26.10.2024 05:21, Jim Burns wrote:

    The proof that all unit fractions can be defined
    is to define them
    as reciprocals of positive countable.to.from.0 numbers.

    That describes all of them and only them.

    No, you falsely assume that all natnumbers can be defined.

    Wrong.  Natural numbers are defined as those defined by the Peano
    axioms.  That is what we mean by "natural number".  Anything which
    "can't be defined" this way isn't a natural number.

    Then there is no actual infinity.

    Then why are all your arguements based on it?

    I investigate this basis of Cantor's theory showing that, if it was
    true, it would nevertheless fail to agree with his theory.

    Proof: If infinity is actual, then all elements of the set of unit
    fractions exist. The function NUF(x) = Number of Unit Fractions
    between 0 and x starts with 0 at 0. After NUF(x') = 1 it cannot change
    to NUF(x'') =  2 without pausing for an interval consisting of
    uncountably many real points. The reason is this: ∀n ∈ ℕ: 1/n -
    1/(n+1) > 0. Of course x' and x'' are dark rational numbers, the
    smallest unit fractions.

    So, all you have done is shown that YOUR CONCEPT of Acutual Infinity
    can't be correct.

    I am not yet convinced, but it may be.

    Regards, WM

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  • From Richard Damon@21:1/5 to All on Mon Oct 28 07:17:47 2024
    On 10/28/24 6:42 AM, WM wrote:
    On 27.10.2024 19:00, Richard Damon wrote:

    So, you agree that there are no undefined Natural Numbers to be dark,
    as the set of that defined Natural Numbers grow without end.

    Nevertheless it remains finite and far less than the actual infinity.

    Regards, WM


    So, you admit that your "infinity" isn't infinite, but finite, and thus everything you have said has just been the rantings of a liar.

    You seem to have missed that "Actual Infinity" as you want to describe
    it has long been shown to be unavailable for us finite beings to
    actually handle.

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  • From Richard Damon@21:1/5 to All on Mon Oct 28 07:21:21 2024
    On 10/28/24 6:32 AM, WM wrote:
    On 27.10.2024 18:08, Moebius wrote:
    Am 27.10.2024 um 17:12 schrieb WM:
    Am 27.10.2024 um 14:54 schrieb Moebius:

    Hint: For each and every x e IR, x <= 0: NUF(x) = 0
    and for each and every x e IR, x > 0: NUF(x) = aleph_0.

    That [...] would require that [for each and every x > 0] [there]
    exist [ℵo unit fractions] between 0 and x

    Exactly!

    This requirement is impossible to satisfy because every unit fraction is
    an x > 0.

    Regards, WM

    Of course it isn't.

    You just don't understand how infinity works. Things without ends just
    behave differently then things with finite ends,

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  • From joes@21:1/5 to All on Mon Oct 28 12:35:04 2024
    Am Mon, 28 Oct 2024 11:42:38 +0100 schrieb WM:
    On 27.10.2024 19:00, Richard Damon wrote:

    So, you agree that there are no undefined Natural Numbers to be dark,
    as the set of that defined Natural Numbers grow without end.
    Nevertheless it remains finite and far less than the actual infinity.
    lolno. N is infinite.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to All on Mon Oct 28 12:39:02 2024
    Am Mon, 28 Oct 2024 11:32:53 +0100 schrieb WM:
    On 27.10.2024 18:08, Moebius wrote:
    Am 27.10.2024 um 17:12 schrieb WM:
    Am 27.10.2024 um 14:54 schrieb Moebius:

    Hint: For each and every x e IR, x <= 0: NUF(x) = 0 and for each and
    every x e IR, x > 0: NUF(x) = aleph_0.
    That [...] would require that [for each and every x > 0] [there] exist
    [ℵo unit fractions] between 0 and x
    Exactly!
    This requirement is impossible to satisfy because every unit fraction is
    an x > 0.
    Huh? This produces an infinity of UFs.


    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
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  • From joes@21:1/5 to All on Mon Oct 28 12:37:11 2024
    Am Mon, 28 Oct 2024 11:36:18 +0100 schrieb WM:
    On 27.10.2024 19:00, Richard Damon wrote:
    On 10/27/24 12:12 PM, WM wrote:
    Am 27.10.2024 um 14:54 schrieb Moebius:
    Am 27.10.2024 um 08:38 schrieb WM:

    and after NUF(x') = 1
    There is no x' e IR such that NUF(x') = 1.
    If all unit fractions are existing, then there is each one. Never two
    or more are at the same point. Hence there is a single one first.
    No two together, but no need for one to be first at the large 'n' end
    of them.
    NUF increases by 1 or more, but more would violate mathematics.

    Hint: For each and every x e IR, x <= 0: NUF(x) = 0 and for each and
    every x e IR, x > 0: NUF(x) = aleph_0.
    That is blatantly wrong because it would require that ℵo unit
    fractions exist between 0 and each and every x > 0,
    Right, like is what happens.
    It may seem strange to a person stuck in finite logic, but is true when
    you understand how infinity works.

    i.e., the open interval (0, 1].
    This infinity between 0 and (0, 1] is not what I can accept.
    No, there is nothing.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
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  • From joes@21:1/5 to All on Mon Oct 28 12:47:40 2024
    Am Mon, 28 Oct 2024 11:03:22 +0100 schrieb WM:
    On 27.10.2024 19:04, joes wrote:
    Am Sun, 27 Oct 2024 17:12:23 +0100 schrieb WM:
    Am 27.10.2024 um 14:54 schrieb Moebius:
    Am 27.10.2024 um 08:38 schrieb WM:

    and after NUF(x') = 1
    There is no x' e IR such that NUF(x') = 1.
    Hint: For each and every x e IR, x <= 0: NUF(x) = 0 and for each and
    every x e IR, x > 0: NUF(x) = aleph_0.
    That is blatantly wrong because it would require that ℵo unit
    fractions exist between 0 and each and every x > 0,
    Which is obviously the case.
    Between two unit fractions there are uncountably many x > 0. Therefore
    your claim is wrong.
    I can't see how that follows?

    If there were a real x with finitely many UFs less than it, the
    finitely many larger UFs... couldn't have infinitely many lesser UFs.
    Unless you claim finitely many UFs.
    There is a smallest UF.
    No, there are inf. many.

    i.e., the open interval (0, 1].
    No, you shifted the quantifiers again.
    This is the definition of NUF(x): There are NUF(x) UFs between 0 and x.
    Not: For given x, there are infinitely many UFs.
    That IS the case.

    There is no UF
    smaller than all x > 0 because every UF is an x > 0 itself.
    Correct, there is no smallest UF >0. But the quantifier-shifted claim
    was: there is a different UF y smaller than any single other UF x.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

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  • From joes@21:1/5 to All on Mon Oct 28 15:45:24 2024
    Am Mon, 28 Oct 2024 11:27:33 +0100 schrieb WM:
    On 27.10.2024 19:01, joes wrote:
    Am Sun, 27 Oct 2024 17:18:32 +0100 schrieb WM:

    Proof: If infinity is actual, then all elements of the set of unit
    fractions exist.
    What does it mean for an element of a set to not exist?
    The set can be extended this element - like Hilbert's Hotel, when every
    guest multiplies his room number with 10^10^10000.
    Ah, but then the element does exist after all, but also somehow wasn't
    an element of the set.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Mon Oct 28 16:33:47 2024
    Am Sun, 27 Oct 2024 17:20:17 +0100 schrieb WM:
    Am 27.10.2024 um 12:38 schrieb Richard Damon:
    On 10/27/24 3:38 AM, WM wrote:
    Am 26.10.2024 um 21:35 schrieb Chris M. Thomasson:
    On 10/26/2024 9:04 AM, WM wrote:
    On 26.10.2024 05:21, Jim Burns wrote:
    On 10/25/2024 3:15 PM, WM wrote:

    Mainly, among other points, the claim that all unit fractions can >>>>>>> be defined and the claim that a Bob can disappear in lossless
    exchanges.
    The proof that all unit fractions can be defined is to define them >>>>>> as reciprocals of positive countable.to.from.0 numbers.
    That describes all of them and only them.
    No, you falsely assume that all natnumbers can be defined.
    Huh? Confusing to me. Humm... Are you trying to suggest that a
    natural number can _not_ be a natural number?
    No. But most natnumbers cannot be defined. This can best be understood
    by the unit fractions.
    So, what is the line between the DEFINED natural numbers and the "not
    defined"?
    There is no line. The defined natural numbers are a potentially infinite
    set, i.e. it can grow without end.
    Thus the set of undefined numbers shrinks to size zero like the
    endsegments.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
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  • From Jim Burns@21:1/5 to All on Mon Oct 28 14:31:37 2024
    On 10/26/2024 12:04 PM, WM wrote:
    On 26.10.2024 05:21, Jim Burns wrote:
    On 10/25/2024 3:15 PM, WM wrote:

    Mainly, among other points, the claim that
    all unit fractions can be defined and the claim that
    a Bob can disappear in lossless exchanges.

    The proof that all unit fractions can be defined
    is to define them
    as reciprocals of positive countable.to.from.0 numbers.

    That describes all of them and only them.

    No, you falsely assume that
    all natnumbers can be defined.

    I assume that
    natural numbers are finite ordinals, and

    that a finite ordinal is predecessored or is 0 and
    each of its priors is predecessored or is 0, and

    that an ordinal is successored and
    a set of ordinals is minimummed or is {}

    Almost all unit fractions
    cannot be discerned by definable real numbers.

    All unit fractions are reciprocals of
    positive countable.to.from.0 numbers.

    That does not change the facts.

    Clearly, the disagreement of proofs
    does not change which claims you call facts.

    Try to define more unit fractions
    than remain undefined.

    𝗖𝗹𝗮𝗶𝗺𝘀 exist which follow
    a 𝗰𝗹𝗮𝗶𝗺 of being countable.to.from.0
    which are unaddressed by
    a 𝗰𝗹𝗮𝗶𝗺 of being discernable.or.visible.or...
    and,
    because they _literally_ follow
    true.or.not.first.false.ly,
    its followers must be true 𝗰𝗹𝗮𝗶𝗺𝘀 about
    the truly countable.to.from.0

    Try to understand the function NUF(x)
    which starts with 0 at 0 and
    after 1 cannot change to 2 without
    pausing for an interval consisting of
    uncountably many real points.

    ⎛ ℕ consists of points countable.to.from.0
    ⎜ ℤ consists of differences of ℕ
    ⎜ Q consists of quotients (w/o 0.denom) of ℤ
    ⎝ ℝ consists of points between splits of ℚ

    ⅟ℕ consists of reciprocals of non.0 ℕ
    NUF(x) = |⅟ℕ∩(∞,x]|

    ∀ᴿx > 0: ∀n ∈ ℕ: ⅟⌈n+⅟x⌉ ∈ ⅟ℕ∩(∞,x]

    NUF(0) = 0 ∧ ∀ᴿx > 0: NUF(x) = |ℕ|

    Don't you claim that
    every unit fraction can be discerned,
    i.e. separated from the smaller ones
    by a real number?

    ½⋅(⅟n+⅟(n+1)) existing is discerning?
    I did not know that.

    Giving a real number
    _by its digits or as a fraction_
    which is between two unit fractions discerns
    the larger one and its larger predecessors.

    ⎛ ℕ consists of points countable.to.from.0
    ⎜ ℤ consists of differences of ℕ
    ⎜ Q consists of quotients (w/o 0.denom) of ℤ
    ⎝ ℝ consists of points between splits of ℚ

    Consider two points x,x′ in ℝ
    Either x = x′
    or there is a rational between x and x′

    Each rational can be given as a fraction.

    Each two points x and x′ are discernable.

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  • From WM@21:1/5 to Richard Damon on Mon Oct 28 20:42:20 2024
    On 28.10.2024 12:17, Richard Damon wrote:
    On 10/28/24 5:49 AM, WM wrote:

    Your proof fails because it assumes properties that are not actually required.

    If you really mean that there must be a lowest unit fraction,

    I mean that there are unit fractions.
    None is below zero.
    Mathematics proves that never more than one is at any point.

    Regards, WM

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  • From WM@21:1/5 to Jim Burns on Mon Oct 28 20:27:46 2024
    On 28.10.2024 19:31, Jim Burns wrote:
    On 10/26/2024 12:04 PM, WM wrote:

    No, you falsely assume that
    all natnumbers can be defined.

    I assume that
    natural numbers are finite ordinals, and

    that a finite ordinal is predecessored or is 0  and
     each of its priors is predecessored or is 0, and

    that an ordinal is successored and
      a set of ordinals is minimummed or is {}

    That is irrelevant with respect to the fact that between every chosen
    unit fraction and zero there are ℵo unit fractions which cannot be
    chosen. After every definable Endsegment with
    |∩{E(1), E(2), ..., E(k)}| = ℵo
    there remain ℵo endsegments which cannot be defined.

    Try to define more unit fractions
    than remain undefined.

    𝗖𝗹𝗮𝗶𝗺𝘀 exist which
    do not answer the question.

    Each rational can be given as a fraction.

    There remain ℵo endsegments which cannot be defined.
    Otherwise the definition of accumulation point was wrong.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Mon Oct 28 20:52:22 2024
    On 28.10.2024 12:21, Richard Damon wrote:
    On 10/28/24 6:36 AM, WM wrote:

    NUF increases by 1 or more, but more would violate mathematics.

    No, NUF(x) jumps from 0 to Aleph_0 in the domain of finite numbers,
    because there is no finite x where it has the value of 0.

    It has the value 0 for all x =< 0. And it cannot jump by more than 1 at
    any point.

    It is just a "undefined" function.

    No, but the first steps happen at undefinable x.


    Hint: For each and every x e IR, x <= 0: NUF(x) = 0
    and for each and every x e IR, x > 0: NUF(x) = aleph_0.

    That is blatantly wrong because it would require that ℵo unit
    fractions exist between 0 and each and every x > 0, i.e., the open
    interval (0, 1].

    Right, like is what happens.

    It may seem strange to a person stuck in finite logic, but is true
    when you understand how infinity works.

    This infinity between 0 and (0, 1] is not what I can accept.

    Note, it isn't an "infinity between" it is that the "bottom" of (0, 1] doesn't exist as a definable point.

    That is true. The bottom is dark.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Mon Oct 28 20:47:13 2024
    On 28.10.2024 12:21, Richard Damon wrote:
    On 10/28/24 6:32 AM, WM wrote:
    On 27.10.2024 18:08, Moebius wrote:
    Am 27.10.2024 um 17:12 schrieb WM:
    Am 27.10.2024 um 14:54 schrieb Moebius:

    Hint: For each and every x e IR, x <= 0: NUF(x) = 0
    and for each and every x e IR, x > 0: NUF(x) = aleph_0.

    That [...] would require that [for each and every x > 0] [there]
    exist [ℵo unit fractions] between 0 and x

    Exactly!

    This requirement is impossible to satisfy because every unit fraction
    is an x > 0.

    Of course it isn't.

    In order to maintain your nonsense, you have even to deny that all unit fractions are positive or to believe that many sit between 0 and (0, oo).

    You just don't understand how infinity works. Things without ends just
    behave differently then things with finite ends,

    But never so.

    Regards WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Richard Damon on Mon Oct 28 20:55:19 2024
    On 28.10.2024 12:21, Richard Damon wrote:
    On 10/28/24 6:30 AM, WM wrote:
    On 27.10.2024 18:05, Moebius wrote:
    Am 27.10.2024 um 17:07 schrieb WM:

    After NUF(x') = 1

    There is no x' e IR such that NUF(x') = 1.

    There is NUF(0) = 0. NUF(1) > 0. Hence NUF increases. This cannot
    happen by more than single unitfractions with interruptions, according
    to mathematics:
    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 .

    It can not happen AT FINITE VALUES, but can "between" them,

    Yes, at undefinable values.

    like just
    above 0, where it jumps from 0 to Aleph_0

    Not at one point, definable or not.

    Regards, W;

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  • From WM@21:1/5 to FromTheRafters on Mon Oct 28 21:05:47 2024
    On 28.10.2024 15:07, FromTheRafters wrote:
    WM was thinking very hard :

    The function NUF(x) = Number of Unit Fractions between 0 and x starts
    with 0 at 0.

    Followed by a discontinuity.

    No. ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 holds everywhere.

    After NUF(x') = 1 it cannot change to NUF(x'') =  2 without pausing
    for an interval consisting of uncountably many real points.

    Your "Axiom of because I say so" is overworked.

    It is mathematics:>> The reason is this: ∀n ∈ ℕ: 1/n - 1/(n+1) > 0.

    Non sequitur. This is just the second part of your stepwise function.

    It holds everywhere if mathematics holds everywhere.

    It
    doesn't have to happen step by step as you envision it.

    As mathematics dictates it.

    You have confessed: In order to maintain actual infinity without dark
    numbers, you have to violate mathematics.

    Regards, WM

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  • From WM@21:1/5 to joes on Mon Oct 28 21:07:48 2024
    On 28.10.2024 17:33, joes wrote:
    Am Sun, 27 Oct 2024 17:20:17 +0100 schrieb WM:

    There is no line. The defined natural numbers are a potentially infinite
    set, i.e. it can grow without end.
    Thus the set of undefined numbers shrinks to size zero

    Impossible. Look at the accumulation point.

    like the
    endsegments.

    All definable endsegments are infinite.

    Regards, WM

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  • From Moebius@21:1/5 to All on Mon Oct 28 23:25:55 2024
    Am 28.10.2024 um 22:03 schrieb Chris M. Thomasson:
    On 10/28/2024 12:47 PM, WM wrote:
    On 28.10.2024 12:21, Richard Damon wrote:
    On 10/28/24 6:32 AM, WM wrote:
    On 27.10.2024 18:08, Moebius wrote:
    Am 27.10.2024 um 17:12 schrieb WM:
    Am 27.10.2024 um 14:54 schrieb Moebius:

    Hint: For each and every x e IR, x <= 0: NUF(x) = 0
    and for each and every x e IR, x > 0: NUF(x) = aleph_0. [Moebius] >>>>>>
    That [...] would require that [for each and every x > 0] [there]
    exist [ℵo unit fractions] between 0 and x [WM, corrected by me]

    Exactly! [Moebius]

    This requirement is impossible to satisfy because every unit
    fraction is an x > 0. [WM]

    Of course it isn't. [Richard Damon]

    In order to maintain your nonsense, you have even to deny that all
    unit fractions are positive or to believe that many sit between 0 and
    (0, oo).

    Huh? WTF?

    I told ye. Didn't I? Mad, gaga, loco loco.

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  • From Moebius@21:1/5 to All on Mon Oct 28 23:28:08 2024
    Am 28.10.2024 um 22:06 schrieb Chris M. Thomasson:
    On 10/28/2024 12:42 PM, WM wrote:
    On 28.10.2024 12:17, Richard Damon wrote:

    Your proof fails because it assumes properties that are not actually
    required.

    If you really mean that there must be a lowest unit fraction, [Richard Damon]

    I mean that there are unit fractions
    None is below zero. [WM]

    An incredible insight!!!

    Mathematics proves that never more than one is at any point.

    ANOTHER incredible insight!!!

    You sure are trying to prove that you are an, idiot...?

    .........................

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  • From Moebius@21:1/5 to All on Mon Oct 28 23:55:51 2024
    Am 28.10.2024 um 23:39 schrieb Chris M. Thomasson:
    On 10/28/2024 3:25 PM, Moebius wrote:

    I told ye. Didn't I? Mad, gaga, [insane,] loco loco.

    No shit! Wow. Pretty fucked up man. ;^o

    WM's mind is the brain insane? Well, perhaps not this bad:

    https://youtu.be/5lvQx7dYY94

    Shit happens... ;^o

    Indeed. But this fucking asshole full of shit should fucking shut up
    when it comes to /mathematics/.

    Btw. try this as an antidote: https://www.youtube.com/watch?v=2EdLasOrG6c

    --- SoupGate-Win32 v1.05
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  • From Moebius@21:1/5 to All on Mon Oct 28 23:49:25 2024
    Am 28.10.2024 um 23:39 schrieb Chris M. Thomasson:
    On 10/28/2024 3:25 PM, Moebius wrote:

    I told ye. Didn't I? Mad, gaga, [insane,] loco loco.

    No shit! Wow. Pretty fucked up man. ;^o

    WM's mind is the brain insane? Well, perhaps not this bad:

    https://youtu.be/5lvQx7dYY94

    Shit happens... ;^o

    Indeed. But this fucking asshole should fucking shut up when it comes to /mathematics/.

    Btw. try this as an antidote: https://www.youtube.com/watch?v=2EdLasOrG6c

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Tue Oct 29 00:52:02 2024
    Am 29.10.2024 um 00:45 schrieb Moebius:
    Am 29.10.2024 um 00:02 schrieb Chris M. Thomasson:
    On 10/28/2024 3:55 PM, Moebius wrote:

    Btw. try this as an antidote: https://www.youtube.com/watch?
    v=2EdLasOrG6c

    :^D Heck, WM might even need a new religion. Not sure what one. Humm:

    https://youtu.be/usADINi17cI

    Na, perhaps another one? Humm... ;^D

    Nice, but also good (maybe even better):

    https://www.youtube.com/watch?v=4B7mKCsGSUc

    ( Actually, clearly much better... :-P )

    Hint: I generally prefer women voices (don't ask!), but in this case ...
    (you see).

    --- SoupGate-Win32 v1.05
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  • From Moebius@21:1/5 to All on Tue Oct 29 00:45:21 2024
    Am 29.10.2024 um 00:02 schrieb Chris M. Thomasson:
    On 10/28/2024 3:55 PM, Moebius wrote:

    Btw. try this as an antidote: https://www.youtube.com/watch?v=2EdLasOrG6c

    :^D Heck, WM might even need a new religion. Not sure what one. Humm:

    https://youtu.be/usADINi17cI

    Na, perhaps another one? Humm... ;^D

    Nice, but also good (maybe even better):

    https://www.youtube.com/watch?v=4B7mKCsGSUc

    ( Actually, clearly much better... :-P )

    --- SoupGate-Win32 v1.05
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  • From Moebius@21:1/5 to All on Tue Oct 29 00:55:17 2024
    Am 29.10.2024 um 00:52 schrieb Moebius:
    Am 29.10.2024 um 00:45 schrieb Moebius:
    Am 29.10.2024 um 00:02 schrieb Chris M. Thomasson:
    On 10/28/2024 3:55 PM, Moebius wrote:

    Btw. try this as an antidote: https://www.youtube.com/watch?
    v=2EdLasOrG6c

    :^D Heck, WM might even need a new religion. Not sure what one. Humm:

    https://youtu.be/usADINi17cI

    Na, perhaps another one? Humm... ;^D

    Nice, but also good (maybe even better):

    https://www.youtube.com/watch?v=4B7mKCsGSUc

    ( Actually, clearly much better... :-P )

    Hint: I generally prefer women voices (don't ask!), but in this case ...
    (you see).

    ***NO ONE*** can perform this in a better way!

    https://www.youtube.com/watch?v=VdQY7BusJNU

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Mon Oct 28 19:58:55 2024
    On 10/28/24 3:42 PM, WM wrote:
    On 28.10.2024 12:17, Richard Damon wrote:
    On 10/28/24 5:49 AM, WM wrote:

    Your proof fails because it assumes properties that are not actually
    required.

    If you really mean that there must be a lowest unit fraction,

    I mean that there are unit fractions.
    None is below zero.
    Mathematics proves that never more than one is at any point.

    Regards, WM

    Which doesn't mean there must be a first, as they aproach an
    accumulation point where the density becomes infinite.

    Something which can't happen your world of finite logic, but does when
    the logic can handle infinities.

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Mon Oct 28 20:21:17 2024
    On 10/28/24 4:05 PM, WM wrote:
    On 28.10.2024 15:07, FromTheRafters wrote:
    WM was thinking very hard :

    The function NUF(x) = Number of Unit Fractions between 0 and x starts
    with 0 at 0.

    Followed by a discontinuity.

    No. ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 holds everywhere.

    But since 1/n approaches zero, the spacing also approaches 0, and in
    fact faster then the numbers do, so the number of point you could put
    between 1/n and 0 and the spacing of 1/n and 1/(n+1) increases and the
    density goes to infinity.


    After NUF(x') = 1 it cannot change to NUF(x'') =  2 without pausing
    for an interval consisting of uncountably many real points.

    Your "Axiom of because I say so" is overworked.

    It is mathematics:>> The reason is this: ∀n ∈ ℕ: 1/n - 1/(n+1) > 0.

    Which means that for even 1/n, there is a 1/(n+1) smaller than it, so no smallest 1/n.


    Non sequitur. This is just the second part of your stepwise function.

    It holds everywhere if mathematics holds everywhere.

    So? The slope of NUF(x) over a range is proportial to the density of
    Unit Fractions in that area, since the density goes to infinity


    It doesn't have to happen step by step as you envision it.

    As mathematics dictates it.

    As FINITE mathematics dictates it, which isn't applicable, since you
    have an infinite set.


    You have confessed: In order to maintain actual infinity without dark numbers, you have to violate mathematics.

    But, you seem to have missed that the ancients proved that we can't have "actual infinity" as something we can directly handle as finite beings.

    Yes, with the finite logic of what we can directly manipulate, we can't
    fully instantiate the infinity, because we can't do that much work with it.

    We need to move to logic that understand the infinite (which might seem
    a bit strange to use) and then we can mostly work with it.

    You just missed the note that your Finite Logic, and Actual Infinity,
    just don't work together, so yes, YOU can't have actual infinity because
    you insist on holding on to your finite logic.


    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to FromTheRafters on Tue Oct 29 09:26:31 2024
    On 28.10.2024 21:51, FromTheRafters wrote:
    WM explained :
    On 28.10.2024 15:07, FromTheRafters wrote:
    WM was thinking very hard :

    The function NUF(x) = Number of Unit Fractions between 0 and x
    starts with 0 at 0.

    Followed by a discontinuity.

    No. ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 holds everywhere.

    Not for n equal to zero.

    I said ∀n ∈ ℕ. 0 is no natural number. NUF(0) = 0.

    After NUF(x') = 1 it cannot change to NUF(x'') =  2 without pausing
    for an interval consisting of uncountably many real points.

    Your "Axiom of because I say so" is overworked.

    It is mathematics:>> The reason is this: ∀n ∈ ℕ: 1/n - 1/(n+1) > 0. >>>
    Non sequitur. This is just the second part of your stepwise function.

    It holds everywhere if mathematics holds everywhere.

    It doesn't have to happen step by step as you envision it.

    As mathematics dictates it.

    You have confessed: In order to maintain actual infinity without dark
    numbers, you have to violate mathematics.

    Bull! Just another of your non sequiturs.

    Try to argue mathematically in spite of spitting nonsense or be quiet.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From joes@21:1/5 to All on Tue Oct 29 08:36:59 2024
    Am Mon, 28 Oct 2024 20:55:19 +0100 schrieb WM:
    On 28.10.2024 12:21, Richard Damon wrote:
    On 10/28/24 6:30 AM, WM wrote:
    On 27.10.2024 18:05, Moebius wrote:
    Am 27.10.2024 um 17:07 schrieb WM:

    After NUF(x') = 1
    There is no x' e IR such that NUF(x') = 1.
    There is NUF(0) = 0. NUF(1) > 0. Hence NUF increases. This cannot
    happen by more than single unitfractions with interruptions, according
    to mathematics:
    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 .
    It can not happen AT FINITE VALUES, but can "between" them,
    Yes, at undefinable values.
    Yes, they are infinitesimal.

    like just above 0, where it jumps from 0 to Aleph_0
    Not at one point, definable or not.
    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Tue Oct 29 09:36:27 2024
    On 29.10.2024 00:58, Richard Damon wrote:
    On 10/28/24 3:42 PM, WM wrote:

    I mean that there are unit fractions.
    None is below zero.
    Mathematics proves that never more than one is at any point.

    Which doesn't mean there must be a first, as they aproach an
    accumulation point where the density becomes infinite.

    Their density is bounded by uncountably many points between every pair
    of consecutive unit fractions:
    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0.
    The density is one point over uncountably many points, that is rather
    precisely 0.

    Something which can't happen your world of finite logic, but does when
    the logic can handle infinities.

    Where does the density surpass 1/10? Can you find this point? If not it
    is another proof of dark numbers.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Tue Oct 29 09:42:07 2024
    On 29.10.2024 01:21, Richard Damon wrote:
    On 10/28/24 3:52 PM, WM wrote:
    On 28.10.2024 12:21, Richard Damon wrote:
    On 10/28/24 6:36 AM, WM wrote:

    NUF increases by 1 or more, but more would violate mathematics.

    No, NUF(x) jumps from 0 to Aleph_0 in the domain of finite numbers,
    because there is no finite x where it has the value of 0.

    It has the value 0 for all x =< 0. And it cannot jump by more than 1
    at any point.

    Of course it can. just not at any finite value.

    There are no others on the real line.

    No, but the first steps happen at undefinable x.

    No, it happens at an x that isn't a finite number.

    The it is dark.

    If you allow your NUF to accept infintesimal numbers

    No, that is strongly forbidden.

    This infinity between 0 and (0, 1] is not what I can accept.

    Note, it isn't an "infinity between" it is that the "bottom" of (0,
    1] doesn't exist as a definable point.

    That is true. The bottom is dark.

    No, the bottom is outside the set.

    Then it is dark bottom.

    Your "Darkness" is just your attempt to hide the problems with your logic.

    And your bottom outside the set is what?

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to joes on Tue Oct 29 09:48:51 2024
    On 29.10.2024 09:36, joes wrote:
    Am Mon, 28 Oct 2024 20:55:19 +0100 schrieb WM:
    On 28.10.2024 12:21, Richard Damon wrote:
    On 10/28/24 6:30 AM, WM wrote:
    On 27.10.2024 18:05, Moebius wrote:
    Am 27.10.2024 um 17:07 schrieb WM:

    After NUF(x') = 1
    There is no x' e IR such that NUF(x') = 1.
    There is NUF(0) = 0. NUF(1) > 0. Hence NUF increases. This cannot
    happen by more than single unitfractions with interruptions, according >>>> to mathematics:
    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 .
    It can not happen AT FINITE VALUES, but can "between" them,
    Yes, at undefinable values.
    Yes, they are infinitesimal.

    There are no infinitesimal x > 0 on the real axis. But your claim may be interpreted as dark numbers x because they cannot be determined.

    like just above 0, where it jumps from 0 to Aleph_0
    Not at one point, definable or not.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Tue Oct 29 07:09:38 2024
    On 10/29/24 4:36 AM, WM wrote:
    On 29.10.2024 00:58, Richard Damon wrote:
    On 10/28/24 3:42 PM, WM wrote:

    I mean that there are unit fractions.
    None is below zero.
    Mathematics proves that never more than one is at any point.

    Which doesn't mean there must be a first, as they aproach an
    accumulation point where the density becomes infinite.

    Their density is bounded by uncountably many points between every pair
    of consecutive unit fractions:
    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0.
    The density is one point over uncountably many points, that is rather precisely 0.

    Something which can't happen your world of finite logic, but does when
    the logic can handle infinities.

    Where does the density surpass 1/10? Can you find this point? If not it
    is another proof of dark numbers.

    Regards, WM


    Remember, density is a measure in a REGION, not at a point.

    Passing 1/10 points per unit is easy, just take the interval [1, 11].

    To get densities that low, you need to include a lot of the flat space
    after 1,

    Your interval you like to talk about [1/(n+1), 1/n] will have 2 unit
    fractions in a distance of 1/(n(n+1)) or a total density of 2n(n+1)
    points per unit. (make the interval (1/(n+1), 1/n] or [1/(n+1), 1/n) and
    you drop it to just n*(n+1) points per unit which is probably a better
    estimate so we don't double count the endpoints.

    This shows that as our region reaches towards zero, the slope of NUF
    increases (except that it is infinity there already, so doesn't change.

    If we try to move the lower end from being at a unit fraction, to being
    at zero, the slope just goes up to its limit of infinity, thus showing
    that NUF(x) CAN jump from 0 to ALeph_0 when moving from 0 t a finite
    positive value.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to as you on Tue Oct 29 07:09:40 2024
    On 10/29/24 4:42 AM, WM wrote:
    On 29.10.2024 01:21, Richard Damon wrote:
    On 10/28/24 3:52 PM, WM wrote:
    On 28.10.2024 12:21, Richard Damon wrote:
    On 10/28/24 6:36 AM, WM wrote:

    NUF increases by 1 or more, but more would violate mathematics.

    No, NUF(x) jumps from 0 to Aleph_0 in the domain of finite numbers,
    because there is no finite x where it has the value of 0.

    It has the value 0 for all x =< 0. And it cannot jump by more than 1
    at any point.

    Of course it can. just not at any finite value.

    There are no others on the real line.

    Right, so your dark numbers aren't real.

    NUF(x) MUST jump from 0 to Aleph_0 at all real values x, as below ANY
    real number x, there are Aleph_0 unit fractions.


    No, but the first steps happen at undefinable x.

    No, it happens at an x that isn't a finite number.

    The it is dark.

    And, as you said above, NOT REAL.


    If you allow your NUF to accept infintesimal numbers

    No, that is strongly forbidden.

    Then it just jumps.


    This infinity between 0 and (0, 1] is not what I can accept.

    Note, it isn't an "infinity between" it is that the "bottom" of (0,
    1] doesn't exist as a definable point.

    That is true. The bottom is dark.

    No, the bottom is outside the set.

    Then it is dark bottom.

    No because you just showed that you "dark" numbers are not real.


    Your "Darkness" is just your attempt to hide the problems with your
    logic.

    And your bottom outside the set is what?

    0., since 0 is the greatest lower bound of the series: 1/1, 1/2, 1/3,
    1/4, 1/5, ... 1/n, ...

    That series approaches 0, but never reaches it, so its bound is 0, which
    isn't in the infinite set of elements,


    Regards, WM


    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Tue Oct 29 11:55:05 2024
    Am Tue, 29 Oct 2024 09:36:27 +0100 schrieb WM:
    On 29.10.2024 00:58, Richard Damon wrote:
    On 10/28/24 3:42 PM, WM wrote:

    I mean that there are unit fractions. None is below zero.
    Mathematics proves that never more than one is at any point.
    Which doesn't mean there must be a first, as they aproach an
    accumulation point where the density becomes infinite.
    Their density is bounded by uncountably many points between every pair
    of consecutive unit fractions:
    The density is one point over uncountably many points, that is rather precisely 0.
    So not bounded at all.

    Something which can't happen your world of finite logic, but does when
    the logic can handle infinities.
    Where does the density surpass 1/10? Can you find this point?
    How do you define the density at a point?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Tue Oct 29 11:53:11 2024
    Am Tue, 29 Oct 2024 09:42:07 +0100 schrieb WM:
    On 29.10.2024 01:21, Richard Damon wrote:
    On 10/28/24 3:52 PM, WM wrote:
    On 28.10.2024 12:21, Richard Damon wrote:
    On 10/28/24 6:36 AM, WM wrote:

    NUF increases by 1 or more, but more would violate mathematics.
    No, NUF(x) jumps from 0 to Aleph_0 in the domain of finite numbers,
    because there is no finite x where it has the value of 0.
    It has the value 0 for all x =< 0. And it cannot jump by more than 1
    at any point.
    Of course it can. just not at any finite value.
    There are no others on the real line.
    That's the point (pun unintended).

    No, but the first steps happen at undefinable x.
    No, it happens at an x that isn't a finite number.
    The nit is dark.
    I.e. infinitesimal.

    If you allow your NUF to accept infintesimal numbers
    No, that is strongly forbidden.
    Then there is no x with NUF(x)=1.

    This infinity between 0 and (0, 1] is not what I can accept.
    Note, it isn't an "infinity between" it is that the "bottom" of (0,
    1] doesn't exist as a definable point.
    That is true. The bottom is dark.
    No, the bottom is outside the set.
    Then it is dark bottom.
    Your "Darkness" is just your attempt to hide the problems with your
    logic.
    And your bottom outside the set is what?
    The infimum is 0.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Tue Oct 29 13:03:27 2024
    Am 29.10.2024 um 12:53 schrieb joes:

    Du redest -ähnlich wie WM- einen ziemlichen Stiefel daher. Einer der
    Effekte, wenn man zu lange mit WM "diskutiert".

    Kleiner Hinweis: In IR gibt es keine "Infinitsimalzahlen".

    --- SoupGate-Win32 v1.05
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  • From Jim Burns@21:1/5 to Ross Finlayson on Tue Oct 29 11:15:19 2024
    On 10/28/2024 2:53 PM, Ross Finlayson wrote:
    On 10/28/2024 11:31 AM, Jim Burns wrote:

    [...]

    Of course you would mean
    "finite ordinals as
    a brief summary model of discernibles the members" of
    "the closure of all relations that make things numbers,
    all those sets, too, all the related things",
    "the" "numbers".

    I mean finite ordinals as finite ordinals.

    Ordinals are well.ordered:
    each set of them holds a first or is empty.
    Each ordinal has its successor.

    Each finite ordinal has its predecessor or is 0 and
    each of its prior ordinals has its predecessor or is 0


    Natural numbers, whole numbers, rational numbers,
    real numbers, complex numbers, algebraic numbers,
    transcendental numbers...
    I find the term "number" problematic until
    the description of _which_ numbers is given.
    And, once given the description,
    we reason from the description,
    and ignore where "number" is used.

    If the term "number" evaporated,
    I would not greatly miss it.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Tue Oct 29 13:12:26 2024
    On 10/28/2024 3:27 PM, WM wrote:
    On 28.10.2024 19:31, Jim Burns wrote:
    On 10/26/2024 12:04 PM, WM wrote:

    No, you falsely assume that
    all natnumbers can be defined.

    I assume that
    natural numbers are finite ordinals, and
    that a finite ordinal is predecessored or is 0  and
      each of its priors is predecessored or is 0, and
    that an ordinal is successored and
       a set of ordinals is minimummed or is {}

    That is irrelevant
    with respect to the fact that
    between every chosen unit fraction and zero
    there are ℵo unit fractions which
    cannot be chosen.

    Your alleged fact depends upon
    what exists among what's discussed.
    I can always inject
    flying rainbow sparkle ponies
    into what's discussed.
    And, once I have injected them, then what?

    Your dark numbers are
    flying rainbow sparkle ponies,
    injected only in order for you to say
    they're there.

    Without flying rainbow sparkle ponies,
    ⎛ an ordinal has its successor,
    ⎜ a non.{} ordinal.set holds its minimum,
    ⎜ a finite ordinal and each prior ordinal
    ⎜ has its predecessor or is 0,
    ⎜ a natural number is a finite ordinal,
    ⎜ an integer is the difference of naturals,
    ⎜ a rational is the quotient (w/o 0.denom)
    ⎜ of integers,
    ⎜ a real is between fore and hind of
    ⎝ a split of rationals.

    between every chosen unit fraction and zero
    there are ℵo unit fractions which
    cannot be chosen.

    Without flying rainbow sparkle ponies,
    ⎛ each unit fraction is countable.down.to from.⅟1
    ⎜ between each unit fraction and zero,
    ⎜ there are ℵ₀ unit fractions which are
    ⎝ countable.down.to from.⅟1

    Any other "unit fractions" are
    flying rainbow sparkle ponies.

    'Infinite' does not mean what you want it to mean.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Tue Oct 29 13:34:24 2024
    On 10/29/2024 4:48 AM, WM wrote:
    On 29.10.2024 09:36, joes wrote:
    Am Mon, 28 Oct 2024 20:55:19 +0100 schrieb WM:

    Yes, at undefinable values.

    Yes, they are infinitesimal.

    There are no infinitesimal x > 0 on the real axis.
    But your claim may be interpreted as dark numbers x
    because they cannot be determined.

    Not.existing is not.existing, dark or visible.

    We can reason correctly about uncountably.many
    points.between.splits.of.ℚ
    by describing them correctly as
    points.between.splits.of.ℚ
    and then
    augmenting the description with finitely.many
    only true.or.not.first.false claims.

    For anything which is a point.between.a.split
    there is no first.false claim, thus
    there is no false claim.

    The same for dark points as for visible points.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Tue Oct 29 21:54:46 2024
    Am 29.10.2024 um 06:10 schrieb Chris M. Thomasson:
    On 10/28/2024 4:55 PM, Moebius wrote:

    ***NO ONE*** can perform this in a better way!

    https://www.youtube.com/watch?v=VdQY7BusJNU

    Actually, I always liked that song. Mellow 80's chill soft rock for
    sure. Indeed.

    Yeah. But it aged well (imho).

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Tue Oct 29 21:52:45 2024
    Am 29.10.2024 um 06:09 schrieb Chris M. Thomasson:
    On 10/28/2024 4:45 PM, Moebius wrote:
    Am 29.10.2024 um 00:02 schrieb Chris M. Thomasson:
    On 10/28/2024 3:55 PM, Moebius wrote:

    Btw. try this as an antidote: https://www.youtube.com/watch?
    v=2EdLasOrG6c

    :^D Heck, WM might even need a new religion. Not sure what one. Humm:

    https://youtu.be/usADINi17cI

    Na, perhaps another one? Humm... ;^D

    Nice, but also good (maybe even better):

    https://www.youtube.com/watch?v=4B7mKCsGSUc

    ( Actually, clearly much better... :-P )

    :^D Not bad at all.

    I'd guess so. :-P

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Tue Oct 29 22:52:02 2024
    Am Tue, 29 Oct 2024 09:48:51 +0100 schrieb WM:
    On 29.10.2024 09:36, joes wrote:
    Am Mon, 28 Oct 2024 20:55:19 +0100 schrieb WM:
    On 28.10.2024 12:21, Richard Damon wrote:
    On 10/28/24 6:30 AM, WM wrote:
    On 27.10.2024 18:05, Moebius wrote:
    Am 27.10.2024 um 17:07 schrieb WM:

    After NUF(x') = 1
    There is no x' e IR such that NUF(x') = 1.
    There is NUF(0) = 0. NUF(1) > 0. Hence NUF increases. This cannot
    happen by more than single unitfractions with interruptions,
    according to mathematics:
    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 .
    It can not happen AT FINITE VALUES, but can "between" them,
    Yes, at undefinable values.
    Yes, they are infinitesimal.
    There are no infinitesimal x > 0 on the real axis. But your claim may be interpreted as dark numbers x because they cannot be determined.
    Your claimed "dark numbers" may be interpreted as infinitesimal.

    like just above 0, where it jumps from 0 to Aleph_0
    Not at one point, definable or not.
    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Wed Oct 30 02:13:22 2024
    Am 30.10.2024 um 00:00 schrieb Chris M. Thomasson:

    https://youtu.be/1Cw1ng75KP0?list=PLRYjIdaAzRVmmaJEG-elAlp91clvYXnws

    Hot, but (actually) (musically) not THAT good. (->pop) :-P

    Let's say ... "nice" :-P

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to FromTheRafters on Wed Oct 30 12:53:09 2024
    On 29.10.2024 11:02, FromTheRafters wrote:
    WM formulated the question :
    On 28.10.2024 21:51, FromTheRafters wrote:
    WM explained :
    On 28.10.2024 15:07, FromTheRafters wrote:
    WM was thinking very hard :

    The function NUF(x) = Number of Unit Fractions between 0 and x
    starts with 0 at 0.

    Followed by a discontinuity.

    No. ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 holds everywhere.

    Not for n equal to zero.

    I said ∀n ∈ ℕ. 0 is no natural number. NUF(0) = 0.

    That is why your function is a step function with a discontinuity.

    NUF(0) = 0, NUF(1) = ℵo. Therefore NUF must grow but cannot grow by more
    than 1 at any point x of the real axis.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Wed Oct 30 13:43:27 2024
    Am 30.10.2024 um 08:22 schrieb Chris M. Thomasson:
    On 9/2/2024 10:07 AM, WM wrote:

    How many [...] unit fractions are lessorequal than all unit
    fractions? The correct answer is:

    Zero.

    Hint: There is no smallest unit fraction.

    Proof: If u is a unit fraction, then 1/(1/s + 1) is a unit fraction
    which is smaller than u. qed

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to FromTheRafters on Wed Oct 30 15:04:33 2024
    On 30.10.2024 13:57, FromTheRafters wrote:
    WM explained :

    NUF(0) = 0, NUF(1) = ℵo. Therefore NUF must grow but cannot grow by
    more than 1 at any point x of the real axis.

    The number of unit fractions less than x is always aleph_zero for
    positive x.

    Believe what you like without foundation.
    If ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 is true, the NUF(x) grows in steps of not more than 1.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Wed Oct 30 16:30:35 2024
    On 29.10.2024 18:34, Jim Burns wrote:
    On 10/29/2024 4:48 AM, WM wrote:
    On 29.10.2024 09:36, joes wrote:
    Am Mon, 28 Oct 2024 20:55:19 +0100 schrieb WM:

    Yes, at undefinable values.

    Yes, they are infinitesimal.

    There are no infinitesimal x > 0 on the real axis.
    But your claim may be interpreted as dark numbers x
    because they cannot be determined.

    Not.existing is not.existing, dark or visible.

    We can reason correctly about uncountably.many
    points.between.splits.of.ℚ

    NUF(0) = 0, NUF(1) = ℵo. Therefore NUF must grow but cannot grow by more
    than 1 at any point x of the real axis.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Wed Oct 30 16:38:59 2024
    On 29.10.2024 12:09, Richard Damon wrote:
    On 10/29/24 4:42 AM, WM wrote:

    NUF(x) MUST jump from 0 to Aleph_0 at all real values x, as below ANY
    real number x, there are Aleph_0 unit fractions.

    That is wrong. It holds only for the reals which you know: The definable
    reals.


    No, but the first steps happen at undefinable x.

    No, it happens at an x that isn't a finite number.

    Then it is dark.

    And, as you said above, NOT REAL.

    A real number but not a definable real number.


    If you allow your NUF to accept infintesimal numbers

    No, that is strongly forbidden.

    Then it just jumps.

    Believe what you like without foundation.
    If ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 is true, the NUF(x) grows in steps of not more than 1.

    Regards, WM

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  • From Moebius@21:1/5 to All on Wed Oct 30 17:54:28 2024
    Am 30.10.2024 um 05:43 schrieb Chris M. Thomasson:
    On 10/29/2024 6:13 PM, Moebius wrote:
    Am 30.10.2024 um 00:00 schrieb Chris M. Thomasson:

    https://youtu.be/1Cw1ng75KP0?list=PLRYjIdaAzRVmmaJEG-elAlp91clvYXnws

    Hot, but (actually) (musically) not THAT good (->pop). :-P

    Let's say ... "nice" :-P

    Is hot pop better than warm pop? ;^D

    Hot chicks, but bad music. :-P

    --- SoupGate-Win32 v1.05
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  • From Jim Burns@21:1/5 to All on Wed Oct 30 13:05:58 2024
    On 10/30/2024 11:30 AM, WM wrote:
    On 29.10.2024 18:34, Jim Burns wrote:
    On 10/29/2024 4:48 AM, WM wrote:
    On 29.10.2024 09:36, joes wrote:
    Am Mon, 28 Oct 2024 20:55:19 +0100 schrieb WM:

    Yes, at undefinable values.

    Yes, they are infinitesimal.

    There are no infinitesimal x > 0 on the real axis.
    But your claim may be interpreted as dark numbers x
    because they cannot be determined.

    Not.existing is not.existing, dark or visible.

    We can reason correctly about uncountably.many
    points.between.splits.of.ℚ

    NUF(0) = 0, NUF(1) = ℵo.

    Therefore NUF must grow but cannot grow by
    more than 1 at any point x of the real axis.

    ∀ᴿx > 0: ∀n ∈ ℕ: ⅟⌈n+⅟x⌉ ∈ ⅟ℕ∩(0,x]

    ∀ᴿx > 0: NUF(x) = |ℕ|

    --- SoupGate-Win32 v1.05
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  • From Jim Burns@21:1/5 to Ross Finlayson on Wed Oct 30 14:28:17 2024
    On 10/30/2024 1:36 AM, Ross Finlayson wrote:
    On 10/29/2024 08:15 AM, Jim Burns wrote:

    I find the term "number" problematic until
    the description of _which_ numbers is given.

    Most people observe an extensionality in
    the "real-valued", then for example somebody like
    Hardy also relates real-valued values to points
    on a line.

    If you want "number" to refer to one of
    the smallest superset of ℚ with the LUB property (ie, to ℝ)
    then I'm okay with that.
    I'm only asking that it be clear that's what it refers to.

    When you say "finite ordinals"
    what's intended is
    "all the body of structural relation
    with regards to the ordinal and
    with regards to the finite",
    and it's doens't necessarily say so much about
    "the numbers" or even "the natural numbers",
    as with regards to that Peano's numbers aren't
    merely zero and a closure to successor,

    'Finite ordinal' doesn't mean
    merely zero and a closure to successor.

    A finite ordinal and each prior ordinal
    either has a predecessor or is 0
    That makes induction necessary.

    ⎛ Assume P(0) ∧ ∀ᴼᶠⁱⁿj: P(j)⇒P(j+1)

    ⎜ Consider the set {n∈𝕆ᶠⁱⁿ:¬P(n)} of counter.examples.

    ⎜⎛ Assume {n∈𝕆ᶠⁱⁿ:¬P(n)} is non.empty.
    ⎜⎜
    ⎜⎜ ∃i = first.in.{n∈𝕆ᶠⁱⁿ:¬P(n)}
    ⎜⎜
    ⎜⎜ i ≠ 0 because P(0)
    ⎜⎜ 0 isn't a counter.example.
    ⎜⎜
    ⎜⎜ i is finite
    ⎜⎜ i-1 exists and P(i-1)
    ⎜⎜ because i = first.in.{n∈𝕆ᶠⁱⁿ:¬P(n)}
    ⎜⎜
    ⎜⎜ However
    ⎜⎜ P(i-1)⇒P((i-1)+1)
    ⎜⎜ P(i)
    ⎜⎜ i isn't a counter.example.
    ⎜⎝ Contradiction.

    ⎜ Therefore {n∈𝕆ᶠⁱⁿ:¬P(n)} is empty
    ⎜ {n∈𝕆ᶠⁱⁿ:P(n)} = 𝕆ᶠⁱⁿ
    ⎝ ∀ᴼᶠⁱⁿk: P(k)

    Therefore,
    if P(0) ∧ ∀ᴼᶠⁱⁿj: P(j)⇒P(j+1)
    then ∀ᴼᶠⁱⁿk: P(k)
    AKA induction.

    there's constant monotone increase and modularity,
    and some have it's only where the operations of
    the addition and division, semi-groups, come together.

    Given induction and the bit of set theory already used,
    we can define addition and multiplication so that
    we have the Peano numbers.

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  • From Jim Burns@21:1/5 to Ross Finlayson on Wed Oct 30 15:10:24 2024
    On 10/30/2024 2:40 PM, Ross Finlayson wrote:
    On 10/30/2024 11:28 AM, Jim Burns wrote:
    On 10/30/2024 1:36 AM, Ross Finlayson wrote:
    On 10/29/2024 08:15 AM, Jim Burns wrote:

    I find the term "number" problematic until
    the description of _which_ numbers is given.

    Most people observe an extensionality in
    the "real-valued", then for example somebody like
    Hardy also relates real-valued values to points
    on a line.

    If you want "number" to refer to one of
    the smallest superset of ℚ with the LUB property (ie, to ℝ)
    then I'm okay with that.
    I'm only asking that it be clear that's what it refers to.

    Nah, I have "number" as mostly reflecting "scalar",
    though there's usual wider usage

    I don't think I'm being unreasonable to ask that
    we all use words the same way, whichever way that may be.

    Apparently, that small ask is challenging,
    when we come to the term 'number".
    I am also perfectly comfortable with not.using "number".

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  • From WM@21:1/5 to FromTheRafters on Wed Oct 30 20:48:14 2024
    On 30.10.2024 16:43, FromTheRafters wrote:
    on 10/30/2024, WM supposed :

    Believe what you like without foundation.
    If ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 is true, the NUF(x) grows in steps of not >> more than 1.

    Wrong.

    What? ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 ?

    Regards, W

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Jim Burns on Wed Oct 30 20:55:26 2024
    On 30.10.2024 18:05, Jim Burns wrote:

    ∀ᴿx > 0: NUF(x) = |ℕ|

    Is ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 wrong?

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From Moebius@21:1/5 to All on Wed Oct 30 21:17:27 2024
    Am 30.10.2024 um 21:04 schrieb Chris M. Thomasson:
    On 10/30/2024 12:48 PM, WM wrote:
    On 30.10.2024 16:43, FromTheRafters wrote:
    on 10/30/2024, WM supposed :

    Believe what you like without foundation.
    If ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 is true, the NUF(x) grows in steps of >>>> not more than 1.

    Wrong.

    What? ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 ?

    1/1 - 1/2 is greater than zero.

    Wow, what a discovery! lol. ;^/

    1/2 - 1/3 is greater than zero.
    1/3 - 1/4 is greater than zero.
    ... On and on ...

    They never hit zero. Got it?

    No unit [fraction] equals zero.

    Yeah, that should be clear from the fact that an unit fraction has "the
    form" 1/n where n is a natural number (by definition). Since there is no natural number n such that 1/n = 0. :-P (If there were such a natural
    number, say wm, we would get 1 = 1/wm * wm = 0 * wm = 0.)

    Mückenheims great discovery is that the DISTANCE between two "adjacent"
    unit fractions is always > 0. Incredible!

    For absolutely no reason he now "thinks" that this fact implies a
    smallest unit fraction. :-)

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  • From Moebius@21:1/5 to All on Wed Oct 30 21:19:17 2024
    Am 30.10.2024 um 21:04 schrieb Chris M. Thomasson:
    On 10/30/2024 12:48 PM, WM wrote:
    On 30.10.2024 16:43, FromTheRafters wrote:
    on 10/30/2024, WM supposed :

    Believe what you like without foundation.
    If ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 is true, the NUF(x) grows in steps of >>>> not more than 1.

    Wrong.

    What? ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 ?

    1/1 - 1/2 is greater than zero.

    Wow, what a discovery! lol. ;^/

    1/2 - 1/3 is greater than zero.
    1/3 - 1/4 is greater than zero.
    ... On and on ...

    They never hit zero. Got it?

    No unit [fraction] equals zero.

    Yeah, that should be clear from the fact that an unit fraction has "the
    form" 1/n where n is a natural number (by definition). Since there is no natural number n such that 1/n = 0. :-P (If there were such a natural
    number, say wm, we would get 1 = 1/wm * wm = 0 * wm = 0.)

    Mückenheim's great discovery is that the DISTANCE between two "adjacent"
    unit fractions is always > 0. Incredible!

    For absolutely no reason he now "thinks" that this fact implies a
    smallest unit fraction. :-)

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  • From Moebius@21:1/5 to All on Wed Oct 30 22:14:07 2024
    Am 30.10.2024 um 21:34 schrieb Chris M. Thomasson:
    On 10/30/2024 1:19 PM, Moebius wrote:

    Mückenheim's great discovery is that the DISTANCE between two
    "adjacent" unit fractions is always > 0. Incredible!

    For absolutely no reason he now "thinks" that this fact implies a
    smallest unit fraction. :-)

    We know that the unit fractions tend to zero but never equal it. So, WM thinks well, the limit means finite? Or some shit like that? Humm...

    Yeah. He just can't comprehend the idea of infinitely many <whatever>.

    --- SoupGate-Win32 v1.05
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  • From Moebius@21:1/5 to All on Wed Oct 30 22:53:43 2024
    Am 30.10.2024 um 22:14 schrieb Moebius:
    Am 30.10.2024 um 21:34 schrieb Chris M. Thomasson:
    On 10/30/2024 1:19 PM, Moebius wrote:

    Mückenheim's great discovery is that the DISTANCE between two
    "adjacent" unit fractions is always > 0. Incredible!

    For absolutely no reason he now "thinks" that this fact implies a
    smallest unit fraction. :-)

    We know that the unit fractions tend to zero but never equal it. So,
    WM thinks well, the limit means finite? Or some shit like that? Humm...

    Yeah. He just can't comprehend the idea of infinitely many <whatever>.

    Note the difference: Certainly NO ONE can comprehend infinitely many <whatever>, but we can comprehend the _idea_ of infinitely many <whatever>.

    See: http://legacy.earlham.edu/~peters/writing/infinity.htm

    --- SoupGate-Win32 v1.05
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  • From Jim Burns@21:1/5 to All on Wed Oct 30 20:14:19 2024
    On 10/30/2024 3:55 PM, WM wrote:
    On 30.10.2024 18:05, Jim Burns wrote:

    ∀ᴿx > 0: ∀n ∈ ℕ: ⅟⌈n+⅟x⌉ ∈ ⅟ℕ∩(0,x]

    ∀ᴿx > 0: NUF(x) = |ℕ|

    Is ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 wrong?

    Neither
    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0
    nor
    ∀ᴿx > 0: ∀n ∈ ℕ: ⅟⌈n+⅟x⌉ ∈ ⅟ℕ∩(0,x]
    is wrong.

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Jim Burns on Thu Oct 31 09:13:07 2024
    On 31.10.2024 01:14, Jim Burns wrote:
    On 10/30/2024 3:55 PM, WM wrote:
    On 30.10.2024 18:05, Jim Burns wrote:

    ∀ᴿx > 0: ∀n ∈ ℕ: ⅟⌈n+⅟x⌉ ∈ ⅟ℕ∩(0,x]

    ∀ᴿx > 0: NUF(x) = |ℕ|

    Is ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 wrong?

    Neither
     ∀n ∈ ℕ: 1/n - 1/(n+1) > 0
    nor
     ∀ᴿx > 0: ∀n ∈ ℕ: ⅟⌈n+⅟x⌉ ∈ ⅟ℕ∩(0,x]
    is wrong.

    But the first formula predicts that only single unit fractions are
    existing on the real line. How could NUF(x) grow from zero by more than 1?

    Regards, WM

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  • From WM@21:1/5 to FromTheRafters on Thu Oct 31 09:24:14 2024
    On 30.10.2024 21:24, FromTheRafters wrote:
    WM explained :
    On 30.10.2024 16:43, FromTheRafters wrote:
    on 10/30/2024, WM supposed :

    Believe what you like without foundation.
    If ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 is true, the NUF(x) grows in steps of >>>> not more than 1.

    Wrong.

    What? ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 ?

    No, the other part. Your 'conclusion' is a non sequitur.

    My conclusion is that all unit fractions are separated by large sets of
    real points from each other. Never two or more unit fractions are at the
    same point. Is that what you doubt? Hardly.

    Then you must doubt that NUF(x) can grow only by 1 at any point x? But why?

    Regards, WM

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  • From WM@21:1/5 to Moebius on Thu Oct 31 09:27:59 2024
    On 30.10.2024 21:19, Moebius wrote:

    Mückenheim's great discovery is that the DISTANCE between two "adjacent" unit fractions is always > 0. Incredible!

    If so, then NUF(x) cannot grow by more than 1 at any point x. It pauses
    over the distance between x and the next unit fraction

    For absolutely no reason he now "thinks" that this fact implies a
    smallest unit fraction.

    NUF(0) = 0. NUF(x) cannot grow by more than 1 at any point x. Isn't that
    a reason?

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to FromTheRafters on Thu Oct 31 09:41:11 2024
    On 31.10.2024 09:29, FromTheRafters wrote:
    WM submitted this idea :
    On 30.10.2024 21:24, FromTheRafters wrote:
    WM explained :
    On 30.10.2024 16:43, FromTheRafters wrote:
    on 10/30/2024, WM supposed :

    Believe what you like without foundation.
    If ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 is true, the NUF(x) grows in steps of >>>>>> not more than 1.

    Wrong.

    What? ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 ?

    No, the other part. Your 'conclusion' is a non sequitur.

    My conclusion is that all unit fractions are separated by large sets
    of real points from each other. Never two or more unit fractions are
    at the same point. Is that what you doubt? Hardly.

    Then you must doubt that NUF(x) can grow only by 1 at any point x? But
    why?

    Because NUF() doesn't "grow" it just *is*.

    According to set theory every function just "is". But we analyze or
    describe its behaviour with increasing argument x as increasing,
    constant or decreasing. Should that be forbidden in case of NUF in order
    to avoid problems?

    Regards, WM

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  • From WM@21:1/5 to FromTheRafters on Thu Oct 31 10:31:27 2024
    On 31.10.2024 10:04, FromTheRafters wrote:
    WM wrote :
    On 31.10.2024 09:29, FromTheRafters wrote:
    WM submitted this idea :
    On 30.10.2024 21:24, FromTheRafters wrote:
    WM explained :
    On 30.10.2024 16:43, FromTheRafters wrote:
    on 10/30/2024, WM supposed :

    Believe what you like without foundation.
    If ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 is true, the NUF(x) grows in steps >>>>>>>> of not more than 1.

    Wrong.

    What? ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 ?

    No, the other part. Your 'conclusion' is a non sequitur.

    My conclusion is that all unit fractions are separated by large sets
    of real points from each other. Never two or more unit fractions are
    at the same point. Is that what you doubt? Hardly.

    Then you must doubt that NUF(x) can grow only by 1 at any point x?
    But why?

    Because NUF() doesn't "grow" it just *is*.

    According to set theory every function just "is". But we analyze or
    describe its behaviour with increasing argument x as increasing,
    constant or decreasing. Should that be forbidden in case of NUF in
    order to avoid problems?

    Well, it would cure your discontinuity dyslexia problems.

    No mathematical arguments available?
    No mathematical arguments available!

    Regards, WM

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  • From Richard Damon@21:1/5 to All on Thu Oct 31 07:36:38 2024
    On 10/30/24 7:53 AM, WM wrote:
    On 29.10.2024 11:02, FromTheRafters wrote:
    WM formulated the question :
    On 28.10.2024 21:51, FromTheRafters wrote:
    WM explained :
    On 28.10.2024 15:07, FromTheRafters wrote:
    WM was thinking very hard :

    The function NUF(x) = Number of Unit Fractions between 0 and x
    starts with 0 at 0.

    Followed by a discontinuity.

    No. ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 holds everywhere.

    Not for n equal to zero.

    I said ∀n ∈ ℕ. 0 is no natural number. NUF(0) = 0.

    That is why your function is a step function with a discontinuity.

    NUF(0) = 0, NUF(1) = ℵo. Therefore NUF must grow but cannot grow by more than 1 at any point x of the real axis.

    Regards, WM



    Because it grows BETWEEN points on the real axis from 0 to ℵo

    Your problem is there isn't a "first" x > 0 above 0 to see it increase
    at, so it can just jump to ℵo.

    Your logic has just blown up your system to smithereens.

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  • From Jim Burns@21:1/5 to All on Thu Oct 31 08:22:59 2024
    On 10/31/2024 4:13 AM, WM wrote:
    On 31.10.2024 01:14, Jim Burns wrote:
    On 10/30/2024 3:55 PM, WM wrote:
    On 30.10.2024 18:05, Jim Burns wrote:

    ∀ᴿx > 0: ∀n ∈ ℕ: ⅟⌈n+⅟x⌉ ∈ ⅟ℕ∩(0,x]

    ∀ᴿx > 0: NUF(x) = |ℕ|

    Is ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 wrong?

    Neither
      ∀n ∈ ℕ: 1/n - 1/(n+1) > 0
    nor
      ∀ᴿx > 0: ∀n ∈ ℕ: ⅟⌈n+⅟x⌉ ∈ ⅟ℕ∩(0,x]
    is wrong.

    But the first formula predicts that
    only single unit fractions
    are existing on the real line.
    How could NUF(x) grow from zero by more than 1?

    Is
    ⎛ ∀ᴿx > 0:
    ⎜ ∀n ∈ ℕ:
    ⎝ ⅟⌈n+⅟x⌉ ∈ ⅟ℕ∩(0,x]
    wrong?

    Is
    ⎛ ∀ᴿx > 0:
    ⎜ ∀n ∈ ℕ:
    ⎜ x > 0
    ⎜ ⅟x > 0
    ⎜ n+⅟x ≥ ⅟x > 0
    ⎜ ⌈n+⅟x⌉ ≥ ⅟x > 0
    ⎜ ⌈n+⅟x⌉ ∈ ℕ
    ⎜ ⅟⌈n+⅟x⌉ ∈ ⅟ℕ
    ⎜ x⋅⌈n+⅟x⌉ ≥ x⋅⅟x > 0
    ⎜ x⋅⌈n+⅟x⌉⋅⅟⌈n+⅟x⌉ ≥ 1⋅⅟⌈n+⅟x⌉ > 0
    ⎜ x ≥ ⅟⌈n+⅟x⌉ > 0
    ⎜ ⅟⌈n+⅟x⌉ ∈ (0,x] ∧ ⅟⌈n+⅟x⌉ ∈ ⅟ℕ
    ⎝ ⅟⌈n+⅟x⌉ ∈ ⅟ℕ∩(0,x]
    wrong?

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  • From WM@21:1/5 to FromTheRafters on Thu Oct 31 16:38:04 2024
    On 31.10.2024 12:00, FromTheRafters wrote:

    Failure to recognize that discontinuity is mathematical noted.

    False. NUF(x) can only increase at unit fractions. They cause no larger discontinuity than 1.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to FromTheRafters on Thu Oct 31 18:24:32 2024
    On 31.10.2024 17:02, FromTheRafters wrote:
    WM explained :
    On 31.10.2024 12:00, FromTheRafters wrote:

    Failure to recognize that discontinuity is mathematical noted.

    False. NUF(x) can only increase at unit fractions. They cause no
    larger discontinuity than 1.

    Wrong, your function, if swept as you seem to require, jumps from zero
    to countable infinity and stays there.

    It cannot jump to countable infinity at a single point because in a
    single point only one unit fraction exists. I investigate its behaviour
    at single points.

    Why do you call 1 a discontinuity?

    The increase from n to n+1 at one point is a discontinuity.

    Regards, WM

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  • From WM@21:1/5 to Richard Damon on Thu Oct 31 18:35:12 2024
    On 31.10.2024 12:36, Richard Damon wrote:
    On 10/30/24 11:38 AM, WM wrote:

    NUF(x) MUST jump from 0 to Aleph_0 at all real values x, as below ANY
    real number x, there are Aleph_0 unit fractions.

    You cannot distinguish them by any real number? That proves that they
    are dark.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Richard Damon on Thu Oct 31 18:33:01 2024
    On 31.10.2024 12:36, Richard Damon wrote:
    On 10/31/24 5:31 AM, WM wrote:

    The problem is functions don't "grow" at a point

    Step functions like NUF do.

    NUF(x) has an infinite slope at x = 0, as the unit fractions have an accumulaton point there.

    Wrong. In spite of the accumulation point, all unit fractions exist at different points separated by uncountably many points. The accumulation
    point has only been invented when the facts were not clear. By the way
    the accumulation point shows that dark numbers exist. Infinitely many
    unit fractions cannot be distinguished.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Thu Oct 31 18:28:15 2024
    On 31.10.2024 12:36, Richard Damon wrote:
    On 10/30/24 7:53 AM, WM wrote:

    NUF(0) = 0, NUF(1) = ℵo. Therefore NUF must grow but cannot grow by
    more than 1 at any point x of the real axis.

    Because it grows BETWEEN points on the real axis from 0 to ℵo.

    I investigate its behaviour at single points.

    Your problem is there isn't a "first" x > 0 above 0 to see it increase
    at,

    We do not see dark numbers but I can prove their existence by
    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0.

    so it can just jump to ℵo.
    But it cannot do so at a single point.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Thu Oct 31 18:41:36 2024
    On 31.10.2024 13:22, Jim Burns wrote:
    On 10/31/2024 4:13 AM, WM wrote:

    Neither
      ∀n ∈ ℕ: 1/n - 1/(n+1) > 0
    nor
      ∀ᴿx > 0: ∀n ∈ ℕ: ⅟⌈n+⅟x⌉ ∈ ⅟ℕ∩(0,x]
    is wrong.

    But the first formula predicts that
    only single unit fractions
    are existing on the real line.
    How could NUF(x) grow from zero by more than 1?

    Is
    ⎛  ∀ᴿx > 0:
    ⎜  ∀n ∈ ℕ:
    ⎝ ⅟⌈n+⅟x⌉ ∈ ⅟ℕ∩(0,x]
    wrong?

    One of two contradicting formulas must be dropped.
    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Thu Oct 31 14:34:17 2024
    On 10/31/2024 1:41 PM, WM wrote:
    On 31.10.2024 13:22, Jim Burns wrote:
    On 10/31/2024 4:13 AM, WM wrote:

    Neither
      ∀n ∈ ℕ: 1/n - 1/(n+1) > 0
    nor
      ∀ᴿx > 0: ∀n ∈ ℕ: ⅟⌈n+⅟x⌉ ∈ ⅟ℕ∩(0,x]
    is wrong.

    But the first formula predicts that
    only single unit fractions
    are existing on the real line.
    How could NUF(x) grow from zero by more than 1?

    Is
    ⎛  ∀ᴿx > 0:
    ⎜  ∀n ∈ ℕ:
    ⎝ ⅟⌈n+⅟x⌉ ∈ ⅟ℕ∩(0,x]
    wrong?

    One of two contradicting formulas must be dropped.

    Which (inside.quantifiers) formula is
    the last which you accept with all prior formulas?

    ⎛ ∀ᴿx > 0:
    ⎜ ∀n ∈ ℕ:
    ⎜ x > 0
    ⎜ ⅟x > 0
    ⎜ n+⅟x ≥ ⅟x > 0
    ⎜ ⌈n+⅟x⌉ ≥ ⅟x > 0
    ⎜ ⌈n+⅟x⌉ ∈ ℕ
    ⎜ ⅟⌈n+⅟x⌉ ∈ ⅟ℕ
    ⎜ x⋅⌈n+⅟x⌉ ≥ x⋅⅟x > 0
    ⎜ x⋅⌈n+⅟x⌉⋅⅟⌈n+⅟x⌉ ≥ 1⋅⅟⌈n+⅟x⌉ > 0
    ⎜ x ≥ ⅟⌈n+⅟x⌉ > 0
    ⎜ ⅟⌈n+⅟x⌉ ∈ (0,x] ∧ ⅟⌈n+⅟x⌉ ∈ ⅟ℕ
    ⎝ ⅟⌈n+⅟x⌉ ∈ ⅟ℕ∩(0,x]

    ⎛ ∀n ∈ ℕ⁺:
    ⎜ n > 0
    ⎜ n+1 > n > 0
    ⎜ ⅟n⋅(n+1)⋅⅟(n+1) > ⅟n⋅n⋅⅟(n+1)
    ⎜ ⅟n > ⅟(n+1)
    ⎜ ⅟n - ⅟(n+1) > ⅟(n+1) - ⅟(n+1)
    ⎝ ⅟n - ⅟(n+1) > 0

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Thu Oct 31 20:46:41 2024
    Am Thu, 31 Oct 2024 18:28:15 +0100 schrieb WM:
    On 31.10.2024 12:36, Richard Damon wrote:
    On 10/30/24 7:53 AM, WM wrote:

    NUF(0) = 0, NUF(1) = ℵo. Therefore NUF must grow but cannot grow by
    more than 1 at any point x of the real axis.
    Because it grows BETWEEN points on the real axis from 0 to ℵo.
    I investigate its behaviour at single points.
    At single points a function has a single value, not a jump. In the
    case of NUF, that value is infinite everywhere except at 0.

    Your problem is there isn't a "first" x > 0 above 0 to see it increase
    We do not see dark numbers but I can prove their existence
    Like all your non-questions, this is not about UFs but rather the
    continuity of the reals.

    so it can just jump to ℵo.
    But it cannot do so at a single point.
    See above.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Thu Oct 31 21:18:43 2024
    On 31.10.2024 19:34, Jim Burns wrote:
    On 10/31/2024 1:41 PM, WM wrote:
    On 31.10.2024 13:22, Jim Burns wrote:
    On 10/31/2024 4:13 AM, WM wrote:

    Neither
      ∀n ∈ ℕ: 1/n - 1/(n+1) > 0
    nor
      ∀ᴿx > 0: ∀n ∈ ℕ: ⅟⌈n+⅟x⌉ ∈ ⅟ℕ∩(0,x]
    is wrong.

    But the first formula predicts that
    only single unit fractions
    are existing on the real line.
    How could NUF(x) grow from zero by more than 1?

    Is
    ⎛  ∀ᴿx > 0:
    ⎜  ∀n ∈ ℕ:
    ⎝ ⅟⌈n+⅟x⌉ ∈ ⅟ℕ∩(0,x]
    wrong?

    One of two contradicting formulas must be dropped.

    Which (inside.quantifiers) formula is
    the last which you accept with all prior formulas?

    Which one requires that NUF(x) can grow at an x ∈ ℝ by more than 1?

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Thu Oct 31 22:36:11 2024
    Am 31.10.2024 um 21:46 schrieb joes:
    Am Thu, 31 Oct 2024 18:28:15 +0100 schrieb WM:

    We do not see dark numbers but I can prove their existence
    Ab in die Klapsmühle mit dem Kerl!

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Thu Oct 31 19:43:18 2024
    On 10/31/24 1:24 PM, WM wrote:
    On 31.10.2024 17:02, FromTheRafters wrote:
    WM explained :
    On 31.10.2024 12:00, FromTheRafters wrote:

    Failure to recognize that discontinuity is mathematical noted.

    False. NUF(x) can only increase at unit fractions. They cause no
    larger discontinuity than 1.

    Wrong, your function, if swept as you seem to require, jumps from zero
    to countable infinity and stays there.

    It cannot jump to countable infinity at a single point because in a
    single point only one unit fraction exists. I investigate its behaviour
    at single points.

    But it doesn't, and that is because point are not "adjacent", so you
    can't talk about changing in moving from one point to the "next" one.


    Why do you call 1 a discontinuity?

    The increase from n to n+1 at one point is a discontinuity.

    Regards, WM


    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to Chris M. Thomasson on Thu Oct 31 19:43:21 2024
    On 10/31/24 3:32 PM, Chris M. Thomasson wrote:
    On 10/31/2024 4:36 AM, Richard Damon wrote:
    On 10/30/24 10:04 AM, WM wrote:
    On 30.10.2024 13:57, FromTheRafters wrote:
    WM explained :

    NUF(0) = 0, NUF(1) = ℵo. Therefore NUF must grow but cannot grow by >>>>> more than 1 at any point x of the real axis.

    The number of unit fractions less than x is always aleph_zero for
    positive x.

    Believe what you like without foundation.
    If ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 is true, the NUF(x) grows in steps of >>> not more than 1.

    Regards, WM


    No, what that expression shows is that for every n, the unit fraction
    1/ n has another unit fraction 1/(n+1) that is smaller than it, so
    there is no "first" unit fraction in that sense for NUF(x) to get to 1.

    You are just proving you don't undetstand even your own mathematics.

    Does WM think that there is a unit fraction that is "closest" to 0? If
    so, he is moronic yet again... Wow.

    Yep, that is his claim, that there MUST be a smallest unit fraction (and
    any smaller are somehow "dark").

    Which of course just gets him admitting he is wrong, but trying to hide
    it by defining those extra ones are hidden under that carpet and we
    can't use them.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Thu Oct 31 19:44:19 2024
    On 10/31/24 1:41 PM, WM wrote:
    On 31.10.2024 13:22, Jim Burns wrote:
    On 10/31/2024 4:13 AM, WM wrote:

    Neither
      ∀n ∈ ℕ: 1/n - 1/(n+1) > 0
    nor
      ∀ᴿx > 0: ∀n ∈ ℕ: ⅟⌈n+⅟x⌉ ∈ ⅟ℕ∩(0,x]
    is wrong.

    But the first formula predicts that
    only single unit fractions
    are existing on the real line.
    How could NUF(x) grow from zero by more than 1?

    Is
    ⎛  ∀ᴿx > 0:
    ⎜  ∀n ∈ ℕ:
    ⎝ ⅟⌈n+⅟x⌉ ∈ ⅟ℕ∩(0,x]
    wrong?

    One of two contradicting formulas must be dropped.
    Regards, WM


    Or, just admit that your NUF(x) is where the contradiction is and drop it.

    But then you lose the basis of your logic, so you are stuck with the
    fact that you logic is just contradictory and has blown itself up to smithereens by trying to use finite logic on infinite sets.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to joes on Fri Nov 1 11:07:27 2024
    On 31.10.2024 21:46, joes wrote:

    At single points a function has a single value, not a jump.

    It jumps in case of NUF by 1 at a unit fraction with respect to the
    foregoing unit fraction and the many points between both.

    In the
    case of NUF, that value is infinite everywhere except at 0.

    That is impossible because there are not infinitely many unit fractions
    between 0 and everywhere.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Fri Nov 1 11:37:29 2024
    On 01.11.2024 00:44, Richard Damon wrote:
    On 10/31/24 1:41 PM, WM wrote:
    On 31.10.2024 13:22, Jim Burns wrote:
    On 10/31/2024 4:13 AM, WM wrote:

    Neither
      ∀n ∈ ℕ: 1/n - 1/(n+1) > 0
    nor
      ∀ᴿx > 0: ∀n ∈ ℕ: ⅟⌈n+⅟x⌉ ∈ ⅟ℕ∩(0,x]
    is wrong.

    But the first formula predicts that
    only single unit fractions
    are existing on the real line.
    How could NUF(x) grow from zero by more than 1?

    Is
    ⎛  ∀ᴿx > 0:
    ⎜  ∀n ∈ ℕ:
    ⎝ ⅟⌈n+⅟x⌉ ∈ ⅟ℕ∩(0,x]
    wrong?

    One of two contradicting formulas must be dropped.

    Or, just admit that your NUF(x) is where the contradiction is and drop it.

    Why? If alleged sets of real numbers really consist of real numbers,
    then we can treat them as real points.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Fri Nov 1 11:45:10 2024
    On 01.11.2024 00:43, Richard Damon wrote:
    On 10/31/24 1:35 PM, WM wrote:
    On 31.10.2024 12:36, Richard Damon wrote:
    On 10/30/24 11:38 AM, WM wrote:

    NUF(x) MUST jump from 0 to Aleph_0 at all real values x, as below
    ANY real number x, there are Aleph_0 unit fractions.

    You cannot distinguish them by any real number? That proves that they
    are dark.

    They are not finite values.

    All unit fractions are finite values.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to FromTheRafters on Fri Nov 1 12:38:38 2024
    On 01.11.2024 11:57, FromTheRafters wrote:
    It happens that WM formulated :
    On 01.11.2024 00:43, Richard Damon wrote:
    On 10/31/24 1:35 PM, WM wrote:
    On 31.10.2024 12:36, Richard Damon wrote:
    On 10/30/24 11:38 AM, WM wrote:

    NUF(x) MUST jump from 0 to Aleph_0 at all real values x, as below >>>>>>> ANY real number x, there are Aleph_0 unit fractions.

    You cannot distinguish them by any real number? That proves that
    they are dark.

    They are not finite values.

    All unit fractions are finite values.

    Each unit fraction is finite, the set of all unit fractions is not
    finite. Not finite is 'infinite' and there is no potential or actual
    anymore -- just finite and not finite.

    Actual means that all are there, including the smallest. Why? It is a
    point on the real line, well separated from its neighbour.

    Regards, WM

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Fri Nov 1 09:21:45 2024
    On 10/31/2024 4:18 PM, WM wrote:
    On 31.10.2024 19:34, Jim Burns wrote:
    On 10/31/2024 1:41 PM, WM wrote:
    On 31.10.2024 13:22, Jim Burns wrote:
    On 10/31/2024 4:13 AM, WM wrote:

    Neither
      ∀n ∈ ℕ: 1/n - 1/(n+1) > 0
    nor
      ∀ᴿx > 0: ∀n ∈ ℕ: ⅟⌈n+⅟x⌉ ∈ ⅟ℕ∩(0,x]
    is wrong.

    But the first formula predicts that
    only single unit fractions
    are existing on the real line.
    How could NUF(x) grow from zero by more than 1?

    Is
    ⎛  ∀ᴿx > 0:
    ⎜  ∀n ∈ ℕ:
    ⎝ ⅟⌈n+⅟x⌉ ∈ ⅟ℕ∩(0,x]
    wrong?

    One of two contradicting formulas must be dropped.

    Which (inside.quantifiers) formula is
    the last which you accept with all prior formulas?

    Is _accepting_ too hard for you?
    Are there _any (inside quantifiers) formulas at all_
    which you accept with all prior formulas?

    ⎛ ∀ᴿx > 0:
    ⎜ ∀n ∈ ℕ:
    ⎜ x > 0
    ⎜ ⅟x > 0
    ⎜ n+⅟x ≥ ⅟x > 0
    ⎜ ⌈n+⅟x⌉ ≥ ⅟x > 0
    ⎜ ⌈n+⅟x⌉ ∈ ℕ
    ⎜ ⅟⌈n+⅟x⌉ ∈ ⅟ℕ
    ⎜ x⋅⌈n+⅟x⌉ ≥ x⋅⅟x > 0
    ⎜ x⋅⌈n+⅟x⌉⋅⅟⌈n+⅟x⌉ ≥ 1⋅⅟⌈n+⅟x⌉ > 0
    ⎜ x ≥ ⅟⌈n+⅟x⌉ > 0
    ⎜ ⅟⌈n+⅟x⌉ ∈ (0,x] ∧ ⅟⌈n+⅟x⌉ ∈ ⅟ℕ
    ⎝ ⅟⌈n+⅟x⌉ ∈ ⅟ℕ∩(0,x]

    ⎛ ∀n ∈ ℕ⁺:
    ⎜ n > 0
    ⎜ n+1 > n > 0
    ⎜ ⅟n⋅(n+1)⋅⅟(n+1) > ⅟n⋅n⋅⅟(n+1)
    ⎜ ⅟n > ⅟(n+1)
    ⎜ ⅟n - ⅟(n+1) > ⅟(n+1) - ⅟(n+1)
    ⎝ ⅟n - ⅟(n+1) > 0

    Which one requires that
    NUF(x) can grow at an x ∈ ℝ by more than 1?

    With a little more work, both
    ∀n ∈ ℕ: 1/n - 1/(n+1) > 0
    and
    ∀ᴿx > 0: ∀n ∈ ℕ: ⅟⌈n+⅟x⌉ ∈ ⅟ℕ∩(0,x]
    show that
    NUF(x) grows at 0 to ℵ₀

    Will you (WM) also be ignoring
    the work which shows
    NUF(x) grows at 0 to ℵ₀ ?


    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Fri Nov 1 11:04:00 2024
    On 11/1/2024 7:38 AM, WM wrote:
    On 01.11.2024 11:57, FromTheRafters wrote:

    [...]

    Actual means that all are there,
    including the smallest.

    Claims like "The ordinals exists"
    work oppositely from how you think they work.

    If I claim "The ordinals exist", then
    I don't expand the universe to the ordinals.
    I contract our discourse to the ordinals.


    Normally (without magic spells),
    talking about stuff doesn't change stuff.
    However,
    we can change _what we're talking about_
    by saying "We're talking about _this_ stuff".

    Here,
    you say: the smallest exists.
    That does not pop the smallest into existence.

    It contracts our discourse to
    lines which have a smallest.
    But,
    when we look at what else we know about lines,
    we also know that _there is no smallest_
    You have contracted our discourse to
    lines which _do and don't_ have a smallest.
    You have contracted our discourse until
    nothing exists which we are talking about.
    However math.like it sounds,
    talk with no referents is gibberish.

    Why?
    It is a point on the real line,
    well separated from its neighbour.

    You can contract our discourse to
    real lines with smallest points,
    but they will also be
    real lines without smallest points,
    which makes our discourse gibberish.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to FromTheRafters on Fri Nov 1 18:03:26 2024
    On 01.11.2024 13:33, FromTheRafters wrote:
    After serious thinking WM wrote :
    On 01.11.2024 11:57, FromTheRafters wrote:
    It happens that WM formulated :
    On 01.11.2024 00:43, Richard Damon wrote:
    On 10/31/24 1:35 PM, WM wrote:
    On 31.10.2024 12:36, Richard Damon wrote:
    On 10/30/24 11:38 AM, WM wrote:

    NUF(x) MUST jump from 0 to Aleph_0 at all real values x, as
    below ANY real number x, there are Aleph_0 unit fractions.

    You cannot distinguish them by any real number? That proves that
    they are dark.

    They are not finite values.

    All unit fractions are finite values.

    Each unit fraction is finite, the set of all unit fractions is not
    finite. Not finite is 'infinite' and there is no potential or actual
    anymore -- just finite and not finite.

    Actual means that all are there,

    They are all there anyway, by definition.

    including the smallest.

    No smallest, since you simply inverted the set of naturals which has no largest.

    If an invariable set of numbers is there, then there is a smallest and a largest number of those which are existing.

    Infinite subsets
    don't do that for you, even if you wish really hard.

    They cannot evade if they are invariable.

    It is a point on the real line, well separated from its neighbour.

    No point on the real line is separated, that is for discrete sets.

    All unit fractions belong to points which are separated by non-unit
    fractions.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Fri Nov 1 18:24:51 2024
    On 01.11.2024 14:21, Jim Burns wrote:

    Will you (WM) also be ignoring
    the work which shows
    NUF(x) grows at 0 to ℵ₀ ?

    Of course. If NUF(x) has grown to ℵ₀ at x₀, then ℵ₀ unit fractions must
    be between 0 and x₀. Hence at least ℵ₀ points with ℵ₀ intervals of uncountably many points must be between 0 and x₀. That cannot happen at
    x₀ = 0.

    Therefore not even a fool could support your claim.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Fri Nov 1 18:33:34 2024
    On 01.11.2024 16:04, Jim Burns wrote:

    Here,
    you say: the smallest exists.
    That does not pop the smallest into existence.

    I say: All exist. That implies the smallest.

    It contracts our discourse to
    lines which have a smallest.

    Yes.

    The other alternative would consist of variable sets.
    Why?
    It is a point on the real line,
    well separated from its neighbour.

    You can contract our discourse to
    real lines with smallest points,
    but they will also be
    real lines without smallest points,

    That happens when Cantor's actual infinity is treated like potential
    infinity. Best example: Hilberts hotel.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to FromTheRafters on Fri Nov 1 21:07:03 2024
    On 01.11.2024 19:39, FromTheRafters wrote:
    WM formulated the question :

    Infinite subsets don't do that for you, even if you wish really hard.

    They cannot evade if they are invariable.

    Sets don't change.

    Therefore the elements do not depend on us and our knowledge. "If I find
    x, then I can find x + 1" is not relevant. "For every x (that I find)
    there is x + 1" is no relevant. All elements are there, independent of
    what we know or do. Therefore the first and the last are also there
    independent of us. If they weren't, their existence would depend on some circumstances and could change.

    It is a point on the real line, well separated from its neighbour.

    No point on the real line is separated, that is for discrete sets.

    All unit fractions belong to points which are separated by non-unit
    fractions.

    Okay, but you previously said the reals are separated.

    No, you have misunderstood. The unit fractions are separated. Of course
    they also are real numbers.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Fri Nov 1 20:55:10 2024
    On 11/1/24 6:07 AM, WM wrote:
    On 31.10.2024 21:46, joes wrote:

    At single points a function has a single value, not a jump.

    It jumps in case of NUF by 1 at a unit fraction with respect to the
    foregoing unit fraction and the many points between both.

    If it jumps a *A* point, it has two values at that point, since no point
    lie on top of another.


    In the
    case of NUF, that value is infinite everywhere except at 0.

    That is impossible because there are not infinitely many unit fractions between 0 and everywhere.


    Why not?

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Fri Nov 1 21:04:00 2024
    On 11/1/24 6:37 AM, WM wrote:
    On 01.11.2024 00:44, Richard Damon wrote:
    On 10/31/24 1:41 PM, WM wrote:
    On 31.10.2024 13:22, Jim Burns wrote:
    On 10/31/2024 4:13 AM, WM wrote:

    Neither
      ∀n ∈ ℕ: 1/n - 1/(n+1) > 0
    nor
      ∀ᴿx > 0: ∀n ∈ ℕ: ⅟⌈n+⅟x⌉ ∈ ⅟ℕ∩(0,x]
    is wrong.

    But the first formula predicts that
    only single unit fractions
    are existing on the real line.
    How could NUF(x) grow from zero by more than 1?

    Is
    ⎛  ∀ᴿx > 0:
    ⎜  ∀n ∈ ℕ:
    ⎝ ⅟⌈n+⅟x⌉ ∈ ⅟ℕ∩(0,x]
    wrong?

    One of two contradicting formulas must be dropped.

    Or, just admit that your NUF(x) is where the contradiction is and drop
    it.

    Why? If alleged sets of real numbers really consist of real numbers,
    then we can treat them as real points.

    Regards, WM

    But there is no "Real Point" where NUF(x) could be 1, since there will
    be multiple unit fractions below x for any x.

    The contradiction is that NUF(x) can be 1 at some finite point in an
    infinte set that is "dense" or has an accumulation point at zero.

    That is the contradiction.

    As is your idea of "adjacent" points, when between ANY two points are
    more points, so two points can not be adjactent, not even to 0.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to FromTheRafters on Sat Nov 2 10:59:04 2024
    On 01.11.2024 22:53, FromTheRafters wrote:
    WM explained on 11/1/2024 :
    On 01.11.2024 19:39, FromTheRafters wrote:
    WM formulated the question :

    Infinite subsets don't do that for you, even if you wish really hard. >>>>
    They cannot evade if they are invariable.

    Sets don't change.

    Therefore the elements do not depend on us and our knowledge. "If I
    find x, then I can find x + 1" is not relevant. "For every x (that I
    find) there is x + 1" is no relevant. All elements are there,
    independent of what we know or do. Therefore the first and the last
    are also there independent of us. If they weren't, their existence
    would depend on some circumstances and could change.

    Circumstances like "there is no last element"?

    That means, there is always another element. Potential infinity.

    the set
    of denominators have no largest element to 'start' with.

    If all unit fractions are existing, then a smallest unit fraction is
    existing. If NUF(x) has grown to ℵ₀ at x₀, then ℵ₀ unit fractions must
    be between 0 and x₀. Hence at least ℵ₀ points with ℵ₀ intervals of uncountably many points must be between 0 and x₀. That cannot happen at
    x₀ = 0.

    Is that too hard to understand?

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Sat Nov 2 11:11:09 2024
    On 02.11.2024 02:04, Richard Damon wrote:
    On 11/1/24 6:37 AM, WM wrote:


    If alleged sets of real numbers really consist of real numbers,
    then we can treat them as real points.

    But there is no "Real Point" where NUF(x) could be 1, since there will
    be multiple unit fractions below x for any x.

    If actual infinity is assumed, then all points are there including a
    first one, but its position cannot be determined. It is dark.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Sat Nov 2 11:15:08 2024
    On 02.11.2024 01:55, Richard Damon wrote:

    Infinite sets do not need to have both ends in them.

    Between 0 and 1 there are unit fractions. Hence there must be a first
    one. The interval without unit fractions and the interval containing
    unit fractions are separated by the smallest unit fraction.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Sat Nov 2 11:23:10 2024
    On 02.11.2024 01:55, Richard Damon wrote:
    On 11/1/24 6:07 AM, WM wrote:
    On 31.10.2024 21:46, joes wrote:

    At single points a function has a single value, not a jump.

    It jumps in case of NUF by 1 at a unit fraction with respect to the
    foregoing unit fraction and the many points between both.

    If it jumps a *A* point, it has two values at that point,

    No it has a larger value at that point than at the interval before that
    point.

    In the
    case of NUF, that value is infinite everywhere except at 0.

    That is impossible because there are not infinitely many unit
    fractions between 0 and everywhere.

    Why not?

    If NUF(x) has grown to ℵ₀ at x₀, then ℵ₀ unit fractions must be between
    0 and x₀. Hence at least ℵ₀ points with ℵ₀ intervals of uncountably many
    points must be between 0 and x₀. That cannot happen at x₀ = 0.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Sat Nov 2 11:18:24 2024
    On 02.11.2024 01:55, Richard Damon wrote:
    On 11/1/24 6:45 AM, WM wrote:
    On 01.11.2024 00:43, Richard Damon wrote:
    On 10/31/24 1:35 PM, WM wrote:
    On 31.10.2024 12:36, Richard Damon wrote:
    On 10/30/24 11:38 AM, WM wrote:

    NUF(x) MUST jump from 0 to Aleph_0 at all real values x, as below >>>>>>> ANY real number x, there are Aleph_0 unit fractions.

    You cannot distinguish them by any real number? That proves that
    they are dark.

    They are not finite values.

    All unit fractions are finite values.

    So?

    There is no Unit Fraction x where NUF(x) can be 1,

    No visible unit fraction.

    as there will always
    be other unit fractions at x/2 and x/3

    This is not true for the smallest unit fraction. If all are existing. In potential infinity it is true for every unit fraction.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Sat Nov 2 12:11:08 2024
    Am Sat, 02 Nov 2024 10:59:04 +0100 schrieb WM:
    On 01.11.2024 22:53, FromTheRafters wrote:
    WM explained on 11/1/2024 :
    On 01.11.2024 19:39, FromTheRafters wrote:
    WM formulated the question :

    Infinite subsets don't do that for you, even if you wish really
    hard.
    They cannot evade if they are invariable.
    Sets don't change.
    Therefore the elements do not depend on us and our knowledge. "If I
    find x, then I can find x + 1" is not relevant. "For every x (that I
    find) there is x + 1" is no relevant. All elements are there,
    independent of what we know or do. Therefore the first and the last
    are also there independent of us.
    Independently nonexistent.

    If they weren't, their existence
    would depend on some circumstances and could change.
    Circumstances like "there is no last element"?
    That means, there is always another element. Potential infinity.
    No, it's just a property of the infinite, especially the actual.

    the set of denominators have no largest element to 'start' with.
    If all unit fractions are existing, then a smallest unit fraction is existing.
    Invalid deduction.

    If NUF(x) has grown to ℵ₀ at x₀, then ℵ₀ unit fractions must
    be between 0 and x₀. Hence at least ℵ₀ points with ℵ₀ intervals of uncountably many points must be between 0 and x₀. That cannot happen at x₀ = 0.
    Well AT zero the value is 0. No UF is zero or less...

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Sat Nov 2 12:17:59 2024
    Am Fri, 01 Nov 2024 18:33:34 +0100 schrieb WM:
    On 01.11.2024 16:04, Jim Burns wrote:

    Here, you say: the smallest exists.
    That does not pop the smallest into existence.
    I say: All exist. That implies the smallest.
    If one exists. That does not mean that anything is "missing",
    just that no element has the property "smallest".
    I can't conjure a middle element of an even number of things,
    even though all are there.

    It contracts our discourse to lines which have a smallest.
    Yes. The other alternative would consist of variable sets.
    Or infinite ones.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Sat Nov 2 13:28:57 2024
    Am 02.11.2024 um 13:11 schrieb joes:
    Am Sat, 02 Nov 2024 10:59:04 +0100 schrieb WM:

    If all unit fractions are existing, then a smallest unit fraction is
    existing.

    Invalid deduction.

    Actually, no _deduction_ at all.

    It's just a nonsensical or false "implication".

    Either

    <nonsensen> -> <a false statement>

    or

    <a true statement> -> <a false statement> .

    Are we willing to consider "all unit fractions are existing" a meaninful
    (and even true) statement? What would it mean for a unit fraction not to
    exist?

    Mückenheim ist für jede Art von Mathematik zu doof und zu blöde.

    Anyway, we may safely replace his claim with the FALSE claim:

    "There is a smallest unit fraction." (WM)

    In fact, there isn't such a unit fraction.

    Proof: If u is a unit fraction, 1/(1/u + 1) is a smaller one. qed

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Sat Nov 2 12:30:45 2024
    Am Fri, 01 Nov 2024 11:07:27 +0100 schrieb WM:
    On 31.10.2024 21:46, joes wrote:

    At single points a function has a single value, not a jump.
    It jumps in case of NUF by 1 at a unit fraction with respect to the
    foregoing unit fraction and the many points between both.
    Whether you define your pathological function with < or <=, at every
    point it has one value (note it doesn't have the SAME value at every
    point: 0 is an exception).

    In the case of NUF, that value is infinite everywhere except at 0.
    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Sat Nov 2 13:38:12 2024
    Am 02.11.2024 um 13:17 schrieb joes:
    Am Fri, 01 Nov 2024 18:33:34 +0100 schrieb WM:

    I say: All exist. That implies [a] smallest.

    No, it doesn't. (And even IF IT DID. A proof would be missing.)

    Mückenheim, Du bist für jede Art von Mathematik zu doof und zu blöde. Vermutlich aber inzwischen auch nicht mehr mentally sane.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Sat Nov 2 13:34:45 2024
    Am 02.11.2024 um 13:17 schrieb joes:
    Am Fri, 01 Nov 2024 18:33:34 +0100 schrieb WM:

    I say: All exist. That implies the smallest.

    No, it doesn't. (And even IF IT DID. A proof would be missing.)

    Mückenheim, Du bist für jede Art von Mathematik zu doof und zu blöde. Vermutlich aber inzwischen auch nicht mehr mentally sane.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Sat Nov 2 13:36:48 2024
    Am 02.11.2024 um 13:30 schrieb joes:

    In the case of NUF, that value is infinite everywhere except at 0.

    Nope, NUF(x) is 0 for all x e IR, x <= 0.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Sat Nov 2 13:42:30 2024
    Am 02.11.2024 um 13:30 schrieb joes:
    Am Fri, 01 Nov 2024 11:07:27 +0100 schrieb WM:
    On 31.10.2024 21:46, joes wrote:

    At single points a function has a single value, not a jump.

    It jumps in case of NUF by 1 at a unit fraction with respect to the
    foregoing unit fraction and [bla]

    Nope. Hint: aleph_0 + 1 = aleph_0.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Sat Nov 2 14:03:16 2024
    Am 02.11.2024 um 13:30 schrieb joes:
    Am Fri, 01 Nov 2024 11:07:27 +0100 schrieb WM:
    On 31.10.2024 21:46, joes wrote:

    At single points a function has a single value, not a jump.
    It jumps in case of NUF by 1 at a unit fraction with respect to the
    foregoing unit fraction and the many points between both.
    Whether you define your pathological function with < or <=, at every
    point it has one value (note it doesn't have the SAME value at every
    point [...]).

    In the case of NUF, [we have:]

    NUF(x) = 0 for x = 0 and
    NUF(x) = aleph_0 for all x e IR, x > 0.

    Instead of NUF we might consider the function

    NNN(x) = card {n e IN: n > x} (x e IR*)

    "number of natural numbers larger than x"

    defined on the extended reals (R* = IR u {-oo, oo}).

    THERE we would have:

    NNN(x) = 0 for x = oo.
    NNN(x) = aleph_0 for all x e IR*, x < oo.

    Math is too hard for Mückenheim.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Sat Nov 2 14:50:06 2024
    Am 02.11.2024 um 14:21 schrieb joes:
    Am Fri, 01 Nov 2024 18:03:26 +0100 schrieb WM:

    If an invariable set of numbers is there, then there is a smallest and a
    largest number of those which are existing.

    Nonsense. For each and every n e IN there is an n' e IN (say n' = n+1)
    such that n' > n. There's no largest element in IN.

    In the same way, for each and every u e {1/n : n e IN} there is an u' e
    {1/n : n e IN} (say u' = 1/(1/u + 1)) such that u' < u. There's no
    smallest element in {1/n : n e IN}.

    Except in Mückenhausne, that is.

    That's just wrong.

    Indeed!

    Mückenheim ist für jede Art von Mathematik zu doof und zu blöde.
    Vermutlich aber inzwischen auch nicht mehr mentally sane.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Sat Nov 2 13:21:01 2024
    Am Fri, 01 Nov 2024 18:03:26 +0100 schrieb WM:
    On 01.11.2024 13:33, FromTheRafters wrote:
    After serious thinking WM wrote :
    On 01.11.2024 11:57, FromTheRafters wrote:
    It happens that WM formulated :
    On 01.11.2024 00:43, Richard Damon wrote:
    On 10/31/24 1:35 PM, WM wrote:
    On 31.10.2024 12:36, Richard Damon wrote:
    On 10/30/24 11:38 AM, WM wrote:

    NUF(x) MUST jump from 0 to Aleph_0 at all real values x, as >>>>>>>>>> below ANY real number x, there are Aleph_0 unit fractions.
    You cannot distinguish them by any real number? That proves that >>>>>>> they are dark.
    They are not finite values.
    All unit fractions are finite values.
    Each unit fraction is finite, the set of all unit fractions is not
    finite. Not finite is 'infinite' and there is no potential or actual
    anymore -- just finite and not finite.
    Actual means that all are there,
    They are all there anyway, by definition.
    including the smallest.
    No smallest, since you simply inverted the set of naturals which has no
    largest.
    If an invariable set of numbers is there, then there is a smallest and a largest number of those which are existing.
    That's just wrong.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Sat Nov 2 10:10:39 2024
    On 11/1/2024 1:24 PM, WM wrote:
    On 01.11.2024 14:21, Jim Burns wrote:

    ⎛ ∀ᴿx > 0:
    ⎜ ∀n ∈ ℕ:
    ⎜ x > 0
    ⎜ ⅟x > 0
    ⎜ n+⅟x ≥ ⅟x > 0
    ⎜ ⌈n+⅟x⌉ ≥ ⅟x > 0
    ⎜ ⌈n+⅟x⌉ ∈ ℕ
    ⎜ ⅟⌈n+⅟x⌉ ∈ ⅟ℕ
    ⎜ x⋅⌈n+⅟x⌉ ≥ x⋅⅟x > 0
    ⎜ x⋅⌈n+⅟x⌉⋅⅟⌈n+⅟x⌉ ≥ 1⋅⅟⌈n+⅟x⌉ > 0
    ⎜ x ≥ ⅟⌈n+⅟x⌉ > 0
    ⎜ ⅟⌈n+⅟x⌉ ∈ (0,x] ∧ ⅟⌈n+⅟x⌉ ∈ ⅟ℕ
    ⎝ ⅟⌈n+⅟x⌉ ∈ ⅟ℕ∩(0,x]

    ⎛ ∀n ∈ ℕ⁺:
    ⎜ n > 0
    ⎜ n+1 > n > 0
    ⎜ ⅟n⋅(n+1)⋅⅟(n+1) > ⅟n⋅n⋅⅟(n+1)
    ⎜ ⅟n > ⅟(n+1)
    ⎜ ⅟n - ⅟(n+1) > ⅟(n+1) - ⅟(n+1)
    ⎝ ⅟n - ⅟(n+1) > 0

    Will you (WM) also be ignoring
    the work which shows
    NUF(x) grows at 0 to ℵ₀ ?

    Of course.

    If NUF(x) has grown to ℵ₀ at x₀,
    then ℵ₀ unit fractions must be between 0 and x₀.

    Yes, and ℵ₀.many are there,
    because x₀ ≥ ⅟⌈n+⅟x₀⌉ > 0

    NUF(0) = 0 ∧
    ∀ᴿx₀ > 0:
    NUF(x₀)=ℵ₀ ⇐ ∀n∈ℕ: (0,x₀] ∋ ⅟⌈n+⅟x₀⌉ ∈ ⅟ℕ

    Hence
    at least ℵ₀ points with
    ℵ₀ intervals of uncountably many points
    must be between 0 and x₀.

    That cannot happen at x₀ = 0.

    No.
    There is no x₀ > 0 which,
    between it and 0,
    that does not happen.
    NUF(0) = 0 ∧
    ¬∃ᴿx₀ > 0:
    NUF(x₀)<ℵ₀ ∧ ∀n∈ℕ: (0,x₀] ∋ ⅟⌈n+⅟x₀⌉ ∈ ⅟ℕ

    Therefore
    not even a fool could support your claim.

    E pur si muove:
    x₀ ≥ ⅟⌈n+⅟x₀⌉ > 0

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Sat Nov 2 12:02:55 2024
    On 11/2/24 6:11 AM, WM wrote:
    On 02.11.2024 02:04, Richard Damon wrote:
    On 11/1/24 6:37 AM, WM wrote:


    If alleged sets of real numbers really consist of real numbers, then
    we can treat them as real points.

    But there is no "Real Point" where NUF(x) could be 1, since there will
    be multiple unit fractions below x for any x.

    If actual infinity is assumed, then all points are there including a
    first one, but its position cannot be determined. It is dark.

    Regards, WM


    If actual infinity is assumed, you need to allow it to have its actual propertids.

    This means that ends are not required.

    You are just assuming contradictions that have blown your system to smithereens.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to joes on Sat Nov 2 18:36:28 2024
    On 02.11.2024 13:30, joes wrote:
    Am Fri, 01 Nov 2024 11:07:27 +0100 schrieb WM:
    On 31.10.2024 21:46, joes wrote:

    In the case of NUF, that value is infinite everywhere except at 0.

    If NUF(x) has grown to ℵ₀ at x₀, then ℵ₀ unit fractions must be between
    0 and x₀. Hence at least ℵ₀ points with ℵ₀ intervals of uncountably many
    points must be between 0 and x₀. That cannot happen at x₀ = 0.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Moebius on Sat Nov 2 18:38:45 2024
    On 02.11.2024 13:38, Moebius wrote:
    Am 02.11.2024 um 13:17 schrieb joes:
    Am Fri, 01 Nov 2024 18:33:34 +0100 schrieb WM:

    I say: All exist. That implies [a] smallest.

    No, it doesn't.

    If NUF(x) has grown to ℵ₀ at x₀, then ℵ₀ unit fractions must be between
    0 and x₀. Hence at least ℵ₀ points with ℵ₀ intervals of uncountably many
    points must be between 0 and x₀. That cannot happen at x₀ = 0.
    NUF can grow only one by one.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Moebius on Sat Nov 2 18:40:09 2024
    On 02.11.2024 14:03, Moebius wrote:

    NUF(x) = 0 for x = 0 and
    NUF(x) = aleph_0 for all x e IR, x > 0.

    If NUF(x) has grown to ℵ₀ at x₀, then ℵ₀ unit fractions must be between
    0 and x₀. Hence at least ℵ₀ points with ℵ₀ intervals of uncountably many
    points must be between 0 and x₀. That cannot happen at x₀ = 0.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to FromTheRafters on Sat Nov 2 18:44:47 2024
    On 02.11.2024 14:54, FromTheRafters wrote:
    WM was thinking very hard :

    That means, there is always another element. Potential infinity.

    Sets don't change. Forget about amplifying 'not finite' with such as
    'actual' and potential' -- infinite simply means not finite and 'actual/potential' is a distinction without a difference. A useless
    concept outside of math philosophy.

    You are wrong because you cannot comprehend the difference between
    elapsing time and points of an interval.

    the set of denominators have no largest element to 'start' with.

    If all unit fractions are existing, then a smallest unit fraction is
    existing. If NUF(x) has grown to ℵ₀ at x₀, then ℵ₀ unit fractions must
    be between 0 and x₀. Hence at least ℵ₀ points with ℵ₀ intervals of >> uncountably many points must be between 0 and x₀. That cannot happen
    at x₀ = 0.

    Is that too hard to understand?

    Apparently, for you.

    Chuckle.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Moebius on Sat Nov 2 18:42:15 2024
    On 02.11.2024 14:50, Moebius wrote:
    Am 02.11.2024 um 14:21 schrieb joes:
    Am Fri, 01 Nov 2024 18:03:26 +0100 schrieb WM:

    If an invariable set of numbers is there, then there is a smallest and a >>> largest number of those which are existing.

    or each and every n e IN there is an n' e IN (say n' = n+1)

    Actual infinity is not based on claims for each and every, but concerns all.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Sat Nov 2 18:50:36 2024
    On 02.11.2024 15:10, Jim Burns wrote:
    On 11/1/2024 1:24 PM, WM wrote:

    Hence
    at least ℵ₀ points with
    ℵ₀ intervals of uncountably many points
    must be between 0 and x₀.

    That cannot happen at x₀ = 0.

    No.
    There is no x₀ > 0 which,
     between it and 0,
      that does not happen.

    Then there is an x₀ where it happens.
    x₀ =/= 0

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Sat Nov 2 18:56:51 2024
    On 02.11.2024 17:02, Richard Damon wrote:
    On 11/2/24 6:23 AM, WM wrote:

    If NUF(x) has grown to ℵ₀ at x₀, then ℵ₀ unit fractions must be
    between 0 and x₀. Hence at least ℵ₀ points with ℵ₀ intervals of
    uncountably many points must be between 0 and x₀. That cannot happen
    at x₀ = 0.

    Right, NUF(x)is 0 at x - 0, and Aleph_0 at any x > 0, since as you said,
    for any positive finite x, there are Aleph_0 unit fractions below it.

    No, neither did I say so nor is it correct. Only for x > x₀ are ℵ₀ smaller unit fractions existing.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Sat Nov 2 18:58:59 2024
    On 02.11.2024 17:02, Richard Damon wrote:
    On 11/2/24 6:18 AM, WM wrote:

    There is no Unit Fraction x where NUF(x) can be 1,

    No visible unit fraction.

    But all unit fractions are visible.

    No.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Sat Nov 2 18:57:51 2024
    On 02.11.2024 17:02, Richard Damon wrote:
    On 11/2/24 6:15 AM, WM wrote:
    On 02.11.2024 01:55, Richard Damon wrote:

    Infinite sets do not need to have both ends in them.

    Between 0 and 1 there are unit fractions. Hence there must be a first
    one. The interval without unit fractions and the interval containing
    unit fractions are separated by the smallest unit fraction.

    Why?

    That is just finite logic.

    There is no other logic.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Sat Nov 2 14:45:17 2024
    On 11/2/2024 6:15 AM, WM wrote:
    On 02.11.2024 01:55, Richard Damon wrote:

    Infinite sets do not need to have both ends in them.

    Between 0 and 1 there are unit fractions.
    Hence there must be a first one.

    A.
    ⎛ S can be given a total ordering which is
    ⎜ well-ordered both forwards and backwards.
    ⎜ That is, every non-empty subset of S has
    ⎝ both a least and a greatest element in the subset.
    [1]

    A. isn't true of all sets.

    If, at some point in time,
    you _define_ A. to be true of all sets,
    then
    for a set S of which A. is false,
    that set S does not change.
    What changes is
    which sets are in our discourse:
    Claims about "a set" (after A. is claimed)
    are not claims about S.

    If you "change" S so that A. is true,
    the "changed" S _is not S_

    [1]
    https://en.wikipedia.org/wiki/Finite_set
    Necessary and sufficient conditions for finiteness
    3. (Paul Stäckel)

    The interval without unit fractions and
    the interval containing unit fractions
    are separated by the smallest unit fraction.

    The set ⅟ℕ of all unit fractions
    ⎛ the set of reciprocals to ℕ⁺
    ⎜ where ℕ⁺ is the minimal set of those
    ⎝ holding 1 and closed under n↦n+1
    does not hold a smallest element.
    A. is not true of ⅟ℕ

    If you augment ⅟ℕ with more elements
    that is a different set.
    A. is still not true of ⅟ℕ

    If you, nonetheless, assert A.
    A. is true of _all the sets in the discourse_
    Because A. is not true of ⅟ℕ,
    ⅟ℕ is not in the discourse.
    After A., claims about "sets" are not
    claims about ⅟ℕ

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Sat Nov 2 15:52:45 2024
    On 11/2/2024 1:50 PM, WM wrote:
    On 02.11.2024 15:10, Jim Burns wrote:
    On 11/1/2024 1:24 PM, WM wrote:

    Hence
    at least ℵ₀ points with
    ℵ₀ intervals of uncountably many points
    must be between 0 and x₀.

    That cannot happen at x₀ = 0.

    No.
    There is no x₀ > 0 which,
      between it and 0,
       that does not happen.

    Then there is an x₀ where it happens.
    x₀ =/= 0

    Each x₀ > 0 is an x₀ where it happens.

    Also,
    for each x₀ > 0 (where it happens)
    x₁ exists: x₀ > x₁ > 0 (where it happens)

    x₀ is not the least where it happens.
    Each point is not the least where it happens.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to Ross Finlayson on Sat Nov 2 15:37:09 2024
    On 11/2/2024 2:02 PM, Ross Finlayson wrote:
    On 11/02/2024 07:10 AM, Jim Burns wrote:

    [...]

    The delta-epsilonics of course,
    or some put it "delta-epsilontics",
    with little d and smaller e,

    or, as others put it,
    all arbitrarily.small δ > 0 with
    each having small.enough ε > 0 existing

    of often for induction arbitrary m and larger n,
    is well-known to all students of calculus.

    "The infinitesimal analysis", ....

    The delta.epsilonics well.known to students of calculus
    is not infinitesimal analysis.
    For δ > 0 and ε > 0
    there are _finite_ j and k such that
    δ > ⅟j > 0 and ε > ⅟k > 0

    j and k follow true.or.not.first.false.ly from
    the line studied by those students being described
    as containing all ratios of finites and also
    sufficient points more such that,
    wherever a function jumps,
    there is a point.of.discontinuity.
    (intermediate value theorem)

    I.e., in a manner of speaking,
    the infinite transfinite cardinals
    don't exist in delta-epsilonics
    any more than plain manner-of-speaking "infinity".

    In a manner of speaking,
    when I use my computer,
    I am _not_ using
    transistors and logic gates and bit packets.
    Certainly, I _can_ use it without
    any awareness of all that.

    However, that and those things not.existing
    are different.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Sat Nov 2 16:30:53 2024
    On 11/2/24 1:56 PM, WM wrote:
    On 02.11.2024 17:02, Richard Damon wrote:
    On 11/2/24 6:23 AM, WM wrote:

    If NUF(x) has grown to ℵ₀ at x₀, then ℵ₀ unit fractions must be >>> between 0 and x₀. Hence at least ℵ₀ points with ℵ₀ intervals of >>> uncountably many points must be between 0 and x₀. That cannot happen
    at x₀ = 0.

    Right, NUF(x)is 0 at x - 0, and Aleph_0 at any x > 0, since as you
    said, for any positive finite x, there are Aleph_0 unit fractions
    below it.

    No, neither did I say so nor is it correct. Only for x > x₀ are ℵ₀ smaller unit fractions existing.

    Regards, WM


    So, for what finite number x > 0 is there less than that?

    There isn't one, as we CAN PROVE that for all x > 0, there exist and
    infinite number of unit fractions less that x, we just need to find
    largest, which is the m = ceil(1/x) and then we can use 1/x, 1/(x+1),
    1/(m+2), 1/(m+3), 1/(m+4), ... 1/(m+n), ... for all Aleph_0 values of
    possible n.

    The fact that the Naturals are closed over addition, so given m and n
    Natrual Numbers, m+n is a Natural Number, we have Aleph_0 values of n,
    all different, and Aleph_0 values of m+n, all dfferent, and 1/(m+n) will
    be less than the initial x.

    Thus, for all finite x > 0, NUF(x) = Alpeh_0.

    Anything else just proves your mathematics can't handle the complete set
    of Natural Numbers.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Sat Nov 2 16:35:03 2024
    On 11/2/24 1:57 PM, WM wrote:
    On 02.11.2024 17:02, Richard Damon wrote:
    On 11/2/24 6:15 AM, WM wrote:
    On 02.11.2024 01:55, Richard Damon wrote:

    Infinite sets do not need to have both ends in them.

    Between 0 and 1 there are unit fractions. Hence there must be a first
    one. The interval without unit fractions and the interval containing
    unit fractions are separated by the smallest unit fraction.

    Why?

    That is just finite logic.

    There is no other logic.

    Regards, WM


    Of course there is,

    It just the finite thinkers can't understand it.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Sat Nov 2 16:34:29 2024
    On 11/2/24 1:42 PM, WM wrote:
    On 02.11.2024 14:50, Moebius wrote:
    Am 02.11.2024 um 14:21 schrieb joes:
    Am Fri, 01 Nov 2024 18:03:26 +0100 schrieb WM:

    If an invariable set of numbers is there, then there is a smallest
    and a
    largest number of those which are existing.

    or each and every n e IN there is an n' e IN (say n' = n+1)

    Actual infinity is not based on claims for each and every, but concerns
    all.

    Regards, WM


    But if it applies to ALL, it must apply to ANY, so a property of ANY
    must apply to each on of the ALL.

    So, for ALL the Natural Numbers, there can't be a highest, because for
    ANY Natural Number there is a following one, and if there was a Highest,
    it would have a property that NONE of the Natural Numbers have (not
    having a successor) so it couldn't have been a Natural Number.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Sat Nov 2 16:36:13 2024
    On 11/2/24 1:58 PM, WM wrote:
    On 02.11.2024 17:02, Richard Damon wrote:
    On 11/2/24 6:18 AM, WM wrote:

    There is no Unit Fraction x where NUF(x) can be 1,

    No visible unit fraction.

    But all unit fractions are visible.

    No.

    Regards, WM


    They are, but maybe you are just blind to them.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Sat Nov 2 22:23:08 2024
    On 02.11.2024 19:45, Jim Burns wrote:
    On 11/2/2024 6:15 AM, WM wrote:
    On 02.11.2024 01:55, Richard Damon wrote:

    Infinite sets do not need to have both ends in them.

    Between 0 and 1 there are unit fractions.
    Hence there must be a first one.

    A.
    ⎛ S can be given a total ordering which is
    ⎜ well-ordered both forwards and backwards.
    ⎜ That is, every non-empty subset of S has
    ⎝ both a least and a greatest element in the subset.
    [1]

    A. isn't true of all sets.

    It is true for all sets of separated points on the real line.
    If you augment ⅟ℕ with more elements
    that is a different set.
    A. is still not true of ⅟ℕ

    If you, nonetheless, assert A.
    A. is true of _all the sets in the discourse_
    Because A. is not true of ⅟ℕ,
    ⅟ℕ is not in the discourse.
    After A., claims about "sets" are not
    claims about ⅟ℕ

    If NUF(x) has grown to ℵ₀ at x₀, then ℵ₀ unit fractions must be between
    0 and x₀. Hence at least ℵ₀ points with ℵ₀ intervals of uncountably many
    points must be between 0 and x₀. That cannot happen at x₀ = 0, and it cannot happen at points in smaller distance than uncountable many points
    from zero.

    Regards, WM



    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Sat Nov 2 22:28:32 2024
    On 02.11.2024 20:52, Jim Burns wrote:
    On 11/2/2024 1:50 PM, WM wrote:
    On 02.11.2024 15:10, Jim Burns wrote:
    On 11/1/2024 1:24 PM, WM wrote:

    Hence
    at least ℵ₀ points with
    ℵ₀ intervals of uncountably many points
    must be between 0 and x₀.

    That cannot happen at x₀ = 0.

    Each x₀ > 0 is an x₀ where it happens.

    No. At least ℵ₀ points with ℵ₀ intervals of uncountably many points must
    be between 0 and x₀. This criterion is not satisfied by every point x >
    0, but it is satisfied by every definable or visible point x > 0.

    Why do you not see this requirement?

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Sat Nov 2 22:37:38 2024
    On 02.11.2024 21:30, Richard Damon wrote:
    On 11/2/24 1:56 PM, WM wrote:
    On 02.11.2024 17:02, Richard Damon wrote:
    On 11/2/24 6:23 AM, WM wrote:

    If NUF(x) has grown to ℵ₀ at x₀, then ℵ₀ unit fractions must be >>>> between 0 and x₀. Hence at least ℵ₀ points with ℵ₀ intervals of >>>> uncountably many points must be between 0 and x₀. That cannot happen >>>> at x₀ = 0.

    Right, NUF(x)is 0 at x - 0, and Aleph_0 at any x > 0, since as you
    said, for any positive finite x, there are Aleph_0 unit fractions
    below it.

    No, neither did I say so nor is it correct. Only for x > x₀ are ℵ₀
    smaller unit fractions existing.

    So, for what finite number x > 0 is there less than that?

    Those numbers are dark.

    There isn't one, as we CAN PROVE that for all x > 0, there exist and
    infinite number of unit fractions less that x

    For every visible number x larger, much larger than x₀ you can prove that.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Sat Nov 2 22:39:36 2024
    On 02.11.2024 21:34, Richard Damon wrote:
    On 11/2/24 1:42 PM, WM wrote:
    On 02.11.2024 14:50, Moebius wrote:
    Am 02.11.2024 um 14:21 schrieb joes:
    Am Fri, 01 Nov 2024 18:03:26 +0100 schrieb WM:

    If an invariable set of numbers is there, then there is a smallest
    and a
    largest number of those which are existing.

    or each and every n e IN there is an n' e IN (say n' = n+1)

    Actual infinity is not based on claims for each and every, but
    concerns all.

    But if it applies to ALL, it must apply to ANY, so a property of ANY
    must apply to each on of the ALL.

    So, for ALL the Natural Numbers, there can't be a highest, because for
    ANY Natural Number there is a following one

    That cannot be true for all dark numbers.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Sat Nov 2 20:17:12 2024
    On 11/2/24 5:39 PM, WM wrote:
    On 02.11.2024 21:34, Richard Damon wrote:
    On 11/2/24 1:42 PM, WM wrote:
    On 02.11.2024 14:50, Moebius wrote:
    Am 02.11.2024 um 14:21 schrieb joes:
    Am Fri, 01 Nov 2024 18:03:26 +0100 schrieb WM:

    If an invariable set of numbers is there, then there is a smallest >>>>>> and a
    largest number of those which are existing.

    or each and every n e IN there is an n' e IN (say n' = n+1)

    Actual infinity is not based on claims for each and every, but
    concerns all.

    But if it applies to ALL, it must apply to ANY, so a property of ANY
    must apply to each on of the ALL.

    So, for ALL the Natural Numbers, there can't be a highest, because for
    ANY Natural Number there is a following one

    That cannot be true for all dark numbers.

    Regards, WM


    But dark numbers don't actually exist, at least not by your description.

    The statement does hold for *ALL* Natural Numbers, by there definition.

    This just proves that you idea of "dark numbers" just does't work. If
    you want try to actual come up with some definitions for them, go ahead,
    but just trying to blame them for everything that breaks your logic and
    your need to lie about the actual Natural Numbers doesn't work.

    Your problem is that you logic can't make the Natural Numbers, and blows
    its self, and your mind, when you try to make it do so, and the darkness
    of your numbers is just the hole it left behind.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Sun Nov 3 08:52:19 2024
    Am Sat, 02 Nov 2024 18:42:15 +0100 schrieb WM:
    On 02.11.2024 14:50, Moebius wrote:
    Am 02.11.2024 um 14:21 schrieb joes:
    Am Fri, 01 Nov 2024 18:03:26 +0100 schrieb WM:

    If an invariable set of numbers is there, then there is a smallest
    and a largest number of those which are existing.
    or each and every n e IN there is an n' e IN (say n' = n+1)
    Actual infinity is not based on claims for each and every, but concerns
    all.
    Lol. That actually sheds some light on your thought process:
    how do you suppose some property holds for all x, but not
    for every?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Sun Nov 3 08:54:49 2024
    Am Sat, 02 Nov 2024 18:57:51 +0100 schrieb WM:
    On 02.11.2024 17:02, Richard Damon wrote:
    On 11/2/24 6:15 AM, WM wrote:
    On 02.11.2024 01:55, Richard Damon wrote:

    Infinite sets do not need to have both ends in them.

    Between 0 and 1 there are unit fractions. Hence there must be a first
    one. The interval without unit fractions and the interval containing
    unit fractions are separated by the smallest unit fraction.

    Why? That is just finite logic.
    There is no other logic.
    There is the logic of the infinite, unless you claim that finite sets
    are in fact infinite. Now that I say it, it seems remarkably close
    to your beliefs.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Sun Nov 3 08:59:19 2024
    Am Sat, 02 Nov 2024 22:23:08 +0100 schrieb WM:
    On 02.11.2024 19:45, Jim Burns wrote:
    On 11/2/2024 6:15 AM, WM wrote:
    On 02.11.2024 01:55, Richard Damon wrote:

    Infinite sets do not need to have both ends in them.

    Between 0 and 1 there are unit fractions.
    Hence there must be a first one.

    A.
    ⎛ S can be given a total ordering which is ⎜ well-ordered both forwards >> and backwards.
    ⎜ That is, every non-empty subset of S has ⎝ both a least and a
    greatest element in the subset.
    [1]
    A. isn't true of all sets.
    It is true for all sets of separated points on the real line.
    Have you heard of the terms supremum and infimum?
    How can differents be not separate?

    If you augment ⅟ℕ with more elements that is a different set.
    A. is still not true of ⅟ℕ
    If you, nonetheless, assert A.
    A. is true of _all the sets in the discourse_
    Because A. is not true of ⅟ℕ,
    ⅟ℕ is not in the discourse.
    After A., claims about "sets" are not claims about ⅟ℕ

    cannot happen at points in smaller distance than uncountable many points
    from zero.
    No such points.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Sun Nov 3 12:42:33 2024
    On 03.11.2024 01:17, Richard Damon wrote:
    On 11/2/24 5:37 PM, WM wrote:

    There isn't one, as we CAN PROVE that for all x > 0, there exist and
    infinite number of unit fractions less that x

    For every visible number x larger, much larger than x₀ you can prove
    that.

    Nope, I can prove it for EVERY x.

    You can prove that ℵo unit fractions fit between 0 and (0, 1]?
    That is based on a inconsistent theory.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Sun Nov 3 07:13:46 2024
    On 11/3/24 6:42 AM, WM wrote:
    On 03.11.2024 01:17, Richard Damon wrote:
    On 11/2/24 5:37 PM, WM wrote:

    There isn't one, as we CAN PROVE that for all x > 0, there exist and
    infinite number of unit fractions less that x

    For every visible number x larger, much larger than x₀ you can prove
    that.

    Nope, I can prove it for EVERY x.

    You can prove that ℵo unit fractions fit between 0 and (0, 1]?
    That is based on a inconsistent theory.

    Regards, WM


    That isn't the question, and your question iiself is the thing that is inconsistent.

    I *CAN* prove for every x in (0, 1], which is what I claimed.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to joes on Sun Nov 3 13:47:03 2024
    On 03.11.2024 09:52, joes wrote:
    Am Sat, 02 Nov 2024 18:42:15 +0100 schrieb WM:
    On 02.11.2024 14:50, Moebius wrote:
    Am 02.11.2024 um 14:21 schrieb joes:
    Am Fri, 01 Nov 2024 18:03:26 +0100 schrieb WM:

    If an invariable set of numbers is there, then there is a smallest
    and a largest number of those which are existing.
    or each and every n e IN there is an n' e IN (say n' = n+1)
    Actual infinity is not based on claims for each and every, but concerns
    all.
    Lol. That actually sheds some light on your thought process:
    how do you suppose some property holds for all x, but not
    for every?

    Every natnumber is finite. But here I mean that not only induction can
    be applied and that induction is not valid for all natnumbers.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to joes on Sun Nov 3 13:50:21 2024
    On 03.11.2024 09:59, joes wrote:
    Am Sat, 02 Nov 2024 22:23:08 +0100 schrieb WM:

    It is true for all sets of separated points on the real line.
    Have you heard of the terms supremum and infimum?

    They are usually not points belonging to the set.

    cannot happen at points in smaller distance than uncountable many points
    from zero.
    No such points.

    Many. Otherwise uncountably many could not be gathered.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Sun Nov 3 15:09:13 2024
    On 03.11.2024 13:13, Richard Damon wrote:

    I *CAN* prove for every x in (0, 1], which is what I claimed.

    You cannot prove that ℵo unit fractions occupy at least ℵo points?

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Sun Nov 3 14:34:28 2024
    Am Sat, 02 Nov 2024 22:39:36 +0100 schrieb WM:
    On 02.11.2024 21:34, Richard Damon wrote:
    On 11/2/24 1:42 PM, WM wrote:
    On 02.11.2024 14:50, Moebius wrote:
    Am 02.11.2024 um 14:21 schrieb joes:
    Am Fri, 01 Nov 2024 18:03:26 +0100 schrieb WM:

    If an invariable set of numbers is there, then there is a smallest >>>>>> and a largest number of those which are existing.
    or each and every n e IN there is an n' e IN (say n' = n+1)
    Actual infinity is not based on claims for each and every, but
    concerns all.
    But if it applies to ALL, it must apply to ANY, so a property of ANY
    must apply to each on of the ALL.
    So, for ALL the Natural Numbers, there can't be a highest, because for
    ANY Natural Number there is a following one
    That cannot be true for all dark numbers.
    And that is why "dark" numbers are not natural (or the naturals are all
    not dark).

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Sun Nov 3 14:48:51 2024
    Am Sun, 03 Nov 2024 13:50:36 +0100 schrieb WM:
    On 03.11.2024 09:54, joes wrote:
    Am Sat, 02 Nov 2024 18:57:51 +0100 schrieb WM:
    On 02.11.2024 17:02, Richard Damon wrote:

    Why? That is just finite logic.
    There is no other logic.
    There is the logic of the infinite, unless you claim that finite sets
    are in fact infinite. Now that I say it, it seems remarkably close to
    your beliefs.
    Logic is always finite. Except that of some modern fools like Henkin.
    Dude. The logic itself is finite, but not what it is talking about.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Sun Nov 3 14:53:33 2024
    Am Sun, 03 Nov 2024 12:42:33 +0100 schrieb WM:
    On 03.11.2024 01:17, Richard Damon wrote:
    On 11/2/24 5:37 PM, WM wrote:

    There isn't one, as we CAN PROVE that for all x > 0, there exist and
    infinite number of unit fractions less that x
    For every visible number x larger, much larger than x₀ you can prove
    that.
    Nope, I can prove it for EVERY x.
    You can prove that ℵo unit fractions fit between 0 and (0, 1]?
    That is based on a inconsistent theory.
    Quit twisting the quantifiers around you motherfucker.

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to joes on Sun Nov 3 16:33:28 2024
    On 03.11.2024 15:34, joes wrote:
    Am Sat, 02 Nov 2024 22:39:36 +0100 schrieb WM:
    On 02.11.2024 21:34, Richard Damon wrote:

    So, for ALL the Natural Numbers, there can't be a highest, because for
    ANY Natural Number there is a following one
    That cannot be true for all dark numbers.
    And that is why "dark" numbers are not natural (or the naturals are all
    not dark).

    So you have only potential infinity.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to joes on Sun Nov 3 17:55:34 2024
    On 03.11.2024 15:53, joes wrote:

    Quit twisting the quantifiers around

    Are you ready to confess that ℵo unit fractions occupy at least ℵo points?

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From Richard Damon@21:1/5 to All on Sun Nov 3 16:21:23 2024
    On 11/3/24 9:09 AM, WM wrote:
    On 03.11.2024 13:13, Richard Damon wrote:

    I *CAN* prove for every x in (0, 1], which is what I claimed.

    You cannot prove that ℵo unit fractions occupy at least ℵo points?

    Regards, WM


    SInce there are Aleph_0 rational point in ANY finite length of the
    number line, and Aleph_0 unit fractions in ANY finite segment from 0 to
    a postive number, yes, I can.

    That fact that your concept of infinity isn't infinte clouds your mind.

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Richard Damon on Mon Nov 4 12:04:03 2024
    On 03.11.2024 22:21, Richard Damon wrote:
    On 11/3/24 9:09 AM, WM wrote:
    On 03.11.2024 13:13, Richard Damon wrote:

    I *CAN* prove for every x in (0, 1], which is what I claimed.

    You cannot prove that ℵo unit fractions occupy at least ℵo points?

    Since there are Aleph_0 rational points in ANY finite length of the
    number line

    But not for every point x > 0. ℵo unit fractions occupy at least ℵo*2^ℵo points, hence more than ℵo points. Your assertion is true only for every point that you can define. But you cannot define points between the
    first ℵo unit fractions.

    Regards, WM

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Richard Damon on Mon Nov 4 12:07:35 2024
    On 03.11.2024 22:21, Richard Damon wrote:

    But Induction *IS* valid for all Natural Numbers.

    Only for all natnumbers which can be defined and which belong to a
    finite initial segment which is followed by ℵo natnumbers most of which
    you cannot define.

    By induction you can prove the sum n(n+1)/2 for every initial segment 1+2+3+...+n. But not for all natural numbers.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Mon Nov 4 07:12:45 2024
    On 11/4/24 6:04 AM, WM wrote:
    On 03.11.2024 22:21, Richard Damon wrote:
    On 11/3/24 9:09 AM, WM wrote:
    On 03.11.2024 13:13, Richard Damon wrote:

    I *CAN* prove for every x in (0, 1], which is what I claimed.

    You cannot prove that ℵo unit fractions occupy at least ℵo points?

    Since there are Aleph_0 rational points in ANY finite length of the
    number line

    But not for every point x > 0. ℵo unit fractions occupy at least ℵo*2^ℵo
    points, hence more than ℵo points. Your assertion is true only for every point that you can define. But you cannot define points between the
    first ℵo unit fractions.

    Regards, WM




    Yes, for every point x > 0, there are Aleph_0 unit fractions below it.

    I showed them to you, so you know you are lying, because you don't
    believe your eyes.

    We can define EVERY existing real value. We have definitions for them.

    Therefore, your numbers that we cna not define, are not real numbers.

    Your logic is based on the assumption of the existance of things that do
    not exist, which blows your logic up, as well as your mind.

    Your "darkness" is just the void left after that explosion.

    --- SoupGate-Win32 v1.05
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  • From Jim Burns@21:1/5 to Ross Finlayson on Mon Nov 4 06:52:02 2024
    On 11/2/2024 6:01 PM, Ross Finlayson wrote:
    On 11/02/2024 12:37 PM, Jim Burns wrote:
    On 11/2/2024 2:02 PM, Ross Finlayson wrote:

    The delta-epsilonics of course,
    or some put it "delta-epsilontics",
    with little d and smaller e,

    of often for induction arbitrary m and larger n,
    is well-known to all students of calculus.

    "The infinitesimal analysis", ....

    The delta.epsilonics well.known to students of calculus
    is not infinitesimal analysis.
    For δ > 0 and ε > 0
    there are _finite_ j and k such that
    δ > ⅟j > 0 and ε > ⅟k > 0

    The delta-epsilonics is
    a perfectly suitable approach to defining
    infinite limit in theories of infinitesimal analysis.

    The delta.epsilonics well.known to students of calculus
    is not infinitesimal analysis.
    For δ > 0 and ε > 0
    there are _finite_ j and k such that
    δ > ⅟j > 0 and ε > ⅟k > 0

    How about atomism, is there a theory there with
    truly abstractly uncuttable objects like the
    theoretical atom?

    There are lots and lots of theories.

    There is one theory
    (modulo lots and lots of ways to express it)
    of the rationals with just enough points more that
    continuous curves which cross must intersect.

    That one theory is
    the theory well.known to students of calculus.

    I mention this
    (and mention it and mention it)
    because
    I am declining your invitation to
    be the mark in a bait.and.switch.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Mon Nov 4 07:14:20 2024
    On 11/4/24 6:07 AM, WM wrote:
    On 03.11.2024 22:21, Richard Damon wrote:

    But Induction *IS* valid for all Natural Numbers.

    Only for all natnumbers which can be defined and which belong to a
    finite initial segment which is followed by ℵo natnumbers most of which
    you cannot define.

    By induction you can prove the sum n(n+1)/2 for every initial segment 1+2+3+...+n. But not for all natural numbers.

    Regards, WM


    But all Natural Numbers can be defined.

    Your logic is just based on the invalid assumption of the existance of something that does not exist, and that assumption blows your logic (and
    your brain) to smithereens, and the "darkness" you see is just the void
    left behind.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Mon Nov 4 18:10:08 2024
    On 04.11.2024 13:12, Richard Damon wrote:

    Yes, for every point x > 0, there are Aleph_0 unit fractions below it.

    No, for the points required to gather ℵo unit fractions, i.e., the
    points of ℵo finite distances.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Mon Nov 4 18:11:48 2024
    On 04.11.2024 13:14, Richard Damon wrote:
    On 11/4/24 6:07 AM, WM wrote:

    By induction you can prove the sum n(n+1)/2 for every initial segment
    1+2+3+...+n. But not for all natural numbers.

    But all Natural Numbers can be defined.

    All defined numbers can be summed. Not all natural numbers can be summed.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Mon Nov 4 12:24:00 2024
    On 11/4/2024 6:07 AM, WM wrote:
    On 03.11.2024 22:21, Richard Damon wrote:

    But Induction *IS* valid for all Natural Numbercs.

    Only for all natnumbers which
    can be defined and which
    belong to a finite initial segment which
    is followed by ℵo natnumbers most of which
    you cannot define.

    ℵ₀ is how many elements are in
    the minimal set holding 0 and closed under n↦n+1

    That is a set of only elements which
    belong to a finite initial segment which
    is followed by ℵ₀ elements each of which
    belongs to a finite initial segment.

    If you call something else ℕ
    you aren't referring to that set,
    which is what everyone else calls ℕ

    By induction you can prove the sum n(n+1)/2
    for every initial segment 1+2+3+...+n.

    ...every finite initial segment...

    But not for all natural numbers.

    No finite initial segment is all the natural numbers.

    Anything countable.to is countable.past.
    Anything countable.past is not.last.countable.to.
    No countable.to is last.countable.to.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Mon Nov 4 16:46:20 2024
    On 11/2/2024 5:28 PM, WM wrote:
    On 02.11.2024 20:52, Jim Burns wrote:
    On 11/2/2024 1:50 PM, WM wrote:
    On 02.11.2024 15:10, Jim Burns wrote:
    On 11/1/2024 1:24 PM, WM wrote:

    Hence
    at least ℵ₀ points with
    ℵ₀ intervals of uncountably many points
    must be between 0 and x₀.

    That cannot happen at x₀ = 0.

    Each x₀ > 0 is an x₀ where it happens.

    No.

    Yes.
    x₀ ≥ ⅟⌈n+⅟x₀⌉ > 0
    E pur si muove.

    At least ℵ₀ points
    with ℵ₀ intervals of uncountably many points
    must be between 0 and x₀.
    This criterion is not satisfied by every point x > 0,

    No.
    x₀ ≥ ⅟⌈n+⅟x₀⌉ > ⅟⌈n+1+⅟x₀⌉ > 0
    E pur si muove.

    but it is satisfied by
    every definable or visible point x > 0.

    every point.between.splits > 0 of
    differences of ratios of countable.to numbers.

    Why do you not see this requirement?

    I see that you require us to be talking about
    what we are not talking about:
    points which _aren't_ between.splits > 0 of
    differences of ratios of countable.to numbers.

    i.
    That's not a thing.
    You are not in command of what we do and don't talk about.

    ii.
    _Even if you were in command_
    The reason that, for each real x > 0
    there are ℕ.many unit fractions between 0 and x
    is not that _we say so_
    Our (hypothetical) not.saying.so can't change it being so.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Mon Nov 4 23:41:27 2024
    Am 04.11.2024 um 23:36 schrieb Alan Mackenzie:

    Ross, that post, like so many of yours, displays only local coherence.
    Each sentence looks like it would make sense if only one were to read the surrounding context. On doing so, no overall sense is to be found, just
    a vague drift from allusions to topics, never quite settling on anything definite.

    A floating stream of thoughts (sort of).

    --- SoupGate-Win32 v1.05
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  • From Alan Mackenzie@21:1/5 to Ross Finlayson on Mon Nov 4 22:36:57 2024
    Ross Finlayson <ross.a.finlayson@gmail.com> wrote:
    On 11/04/2024 03:52 AM, Jim Burns wrote:

    [ .... ]

    The delta-epsilonics of course,
    or some put it "delta-epsilontics",
    with little d and smaller e,

    That one theory is
    the theory well.known to students of calculus.

    I mention this
    (and mention it and mention it)
    because
    I am declining your invitation to
    be the mark in a bait.and.switch.



    Sure it is, the delta-epsilonics is well known,
    and where often proofs in geometry will have been
    introduced vis-a-vis usual sorts of plain "checks"
    as "proofs", then delta-epsilonics is often the
    first sort of deductive account, introduced to
    what's usually upper-class secondary students,
    then that the concept of the infinite limit
    is made and then it's pointed out how that fits
    with regards to classical expositions like Zeno's,
    of what yet doesn't.

    What I'm saying is that since antiquity,
    it is known,
    that there are at least two models of continuity,
    and you may call it Archimedean and Democritan,
    about the field of rationals versus atomism,
    and that infinitesimal analysis includes both.


    So, no, I'm not interested nor was it proffered
    "bait-and-switch", though here there's still
    the "pick one, get both".

    The "clock arithmetic" is usually fmailiar to
    students as with regards to the sweep of
    the secondae hand around the clock, or as
    with regards to the rollover of the odometer,
    that a course-of-passage in _time_ is most
    simply as in accords with the classical expositions
    of constant and uniform motion.

    Indeed the dialectic I should hope you know as
    something akin to "thesis, anti-thesis, synthesis",
    as with regards to that being "pick one, get both".

    I.e., the complementary duals, these competing concerns,
    meet in the middle, even if: "the middle of nowhere".


    So, infinitesimal analysis includes delta-epsilonics,
    if not the other way around.

    Then, some "continuum infinitesimal analysis",
    makes for "Standard Infinitesimals" like
    these "iota-values" of "line-reals".

    constant monotone strictly increasing

    extent density completeness measure

    Ross, that post, like so many of yours, displays only local coherence.
    Each sentence looks like it would make sense if only one were to read the surrounding context. On doing so, no overall sense is to be found, just
    a vague drift from allusions to topics, never quite settling on anything definite.

    In this, your posts are a bit like Edith Sitwell's poems in Façade:

    'Do not take a bath in Jordan, Gordon,
    On the holy sabbath, on the peaceful day!'
    Said the huntsman, playing on his old bagpipe,
    Boring to death the pheasant and the snipe -
    Boring the ptarmigan and grouse for fun -
    Boring them worse than a nine-bore gun.
    Till the flaxen leaves where the prunes are ripe,
    Heard the tartan wind adroning through the pipe,
    And they heard McPherson say:
    'Where do the waves go? What hotels
    Hide their bustles and their gay ombrelles?
    And would there be room for me?'

    --
    Alan Mackenzie (Nuremberg, Germany).

    --- SoupGate-Win32 v1.05
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  • From Jim Burns@21:1/5 to Ross Finlayson on Mon Nov 4 18:09:40 2024
    On 11/4/2024 2:39 PM, Ross Finlayson wrote:
    On 11/04/2024 03:52 AM, Jim Burns wrote:
    On 11/2/2024 6:01 PM, Ross Finlayson wrote:
    On 11/02/2024 12:37 PM, Jim Burns wrote:
    On 11/2/2024 2:02 PM, Ross Finlayson wrote:

    The delta-epsilonics of course,
    or some put it "delta-epsilontics",
    with little d and smaller e,
    of often for induction arbitrary m and larger n,
    is well-known to all students of calculus.
    "The infinitesimal analysis", ....

    The delta.epsilonics well.known to students of calculus
    is not infinitesimal analysis.
    For δ > 0 and ε > 0
    there are _finite_ j and k such that
    δ > ⅟j > 0 and ε > ⅟k > 0

    Sure it is,
    the delta-epsilonics is well known,

    For δ > 0
    there is finite j such that δ > ⅟j > 0

    ⎛ Assume otherwise.
    ⎜ Assume, for δ > 0, that
    ⎜ no ⅟j exists: δ > ⅟j > 0
    ⎜ δ is a lower bound of ⅟ℕ
    ⎜ ⅟ℕ = {⅟i: i ∈ ℕ⁺ ∧ i finite}

    ⎜ Let β be the greatest lower bound of ⅟ℕ
    ⎜ β ≥ δ > 0
    ⎜ 2⋅β > β > ½⋅β

    ⎜ ⅟ℕ ᵉᵃᶜʰ≥ β > ½⋅β
    ⎜ ⅟ℕ ᵉᵃᶜʰ≥ ½⋅β
    ⎜ ½⋅β is a lower bound of ⅟ℕ [1]

    ⎜ If 2⋅β is a lower.bound of ⅟ℕ
    ⎜ then 2.β > β is a greater.than.β lower bound of ⅟ℕ
    ⎜ which is not a thing.
    ⎜ 2⋅β is not a lower bound of ⅟ℕ

    ⎜ 2⋅β is not a lower bound of ⅟ℕ
    ⎜ exists ⅟k ∈ ⅟ℕ: ⅟k > 2⋅β
    ⎜ exists ¼⋅⅟k ∈ ⅟ℕ: ¼⋅⅟k > ½⋅β
    ⎜ ½⋅β is not a lower bound of ⅟v ℕ

    ⎜ However,
    ⎜ [1] ½⋅β is a lower bound of ⅟ℕ
    ⎝ Contradiction.

    Therefore,
    For δ > 0
    there is finite j such that δ > ⅟j > 0

    What I'm saying is that since antiquity,
    it is known,
    that there are at least two models of continuity,
    and you may call it Archimedean and Democritan,
    about the field of rationals versus atomism,
    and that infinitesimal analysis includes both.

    Calculus class.
    Complete ordered field.
    Delta.epsilonics.
    No infinitesimals.

    So, infinitesimal analysis includes delta-epsilonics,
    if not the other way around.

    Infinitesimal analysis without infinitesimals.
    So creative!

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to Moebius on Mon Nov 4 18:18:08 2024
    On 11/4/2024 5:41 PM, Moebius wrote:
    Am 04.11.2024 um 23:36 schrieb Alan Mackenzie:

    Ross, that post, like so many of yours, displays only local coherence.
    Each sentence looks like it would make sense if only one were to read the
    surrounding context.  On doing so, no overall sense is to be found, just
    a vague drift from allusions to topics, never quite settling on anything
    definite.

    A floating stream of thoughts (sort of).

    I have a theory, not confirmed by RF,
    that Ross is conducting a brainstorming session,
    in which credit is given for _creativity_ or
    of the sheer number of ideas thrown out,
    and not for any sort of thread tying them together.

    As I say, not confirmed.
    But my theory comforts me.
    I don't try to connect Ross's posts to my posts.
    He presents a buffet.
    Take what you like, leave the rest.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Tue Nov 5 00:54:32 2024
    Am 05.11.2024 um 00:36 schrieb Chris M. Thomasson:
    On 11/4/2024 3:18 PM, Jim Burns wrote:
    On 11/4/2024 5:41 PM, Moebius wrote:
    Am 04.11.2024 um 23:36 schrieb Alan Mackenzie:

    Ross, that post, like so many of yours, displays only local coherence. >>>> Each sentence looks like it would make sense if only one were to
    read the
    surrounding context.  On doing so, no overall sense is to be found,
    just
    a vague drift from allusions to topics, never quite settling on
    anything
    definite.

    A floating stream of thoughts (sort of).

    Backed up by some knowledge of the literature.

    I have a theory, not confirmed by RF,
    that Ross is conducting a brainstorming session,
    in which credit is given for _creativity_ or
    of the sheer number of ideas thrown out,
    and not for any sort of thread tying them together.

    Agree. :-)

    In german it's called "Gedankenflucht" ("flight of ideas"). Usually
    associated to some form of schizophrenia.

    As I say, not confirmed.
    But my theory comforts me.
    I don't try to connect Ross's posts to my posts.
    He presents a buffet.
    Take what you like, leave the rest.

    Agreed! :^)

    Yeah. :-)

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Mon Nov 4 22:08:49 2024
    On 11/4/24 12:11 PM, WM wrote:
    On 04.11.2024 13:14, Richard Damon wrote:
    On 11/4/24 6:07 AM, WM wrote:

    By induction you can prove the sum n(n+1)/2 for every initial segment
    1+2+3+...+n. But not for all natural numbers.

    But all Natural Numbers can be defined.

    All defined numbers can be summed. Not all natural numbers can be summed.

    Regards, WM

    Why not?

    The Natural Numbers are exactly the set of Numbers defined by Zero, and
    the successor of some other Natural Number (where each number has just
    one successor), so all are defined, Every Natural Number is either Zero,
    or the successor of some other defined Natural Number.

    The rules defining arithmatic on those Natural Numbers work on them all.

    I guess you don't have a complete mathematics at your disposal.

    Or maybe the problem is you can't have the full set of the Natural
    Numbers in your logic system, and that is causing your darkness.

    --- SoupGate-Win32 v1.05
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  • From WM@21:1/5 to Richard Damon on Tue Nov 5 17:45:01 2024
    On 05.11.2024 04:08, Richard Damon wrote:
    On 11/4/24 12:11 PM, WM wrote:
    On 04.11.2024 13:14, Richard Damon wrote:
    On 11/4/24 6:07 AM, WM wrote:

    By induction you can prove the sum n(n+1)/2 for every initial
    segment 1+2+3+...+n. But not for all natural numbers.

    But all Natural Numbers can be defined.

    All defined numbers can be summed. Not all natural numbers can be summed.

    Why not?

    because most cannot be defined.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Jim Burns on Tue Nov 5 17:49:26 2024
    On 04.11.2024 22:46, Jim Burns wrote:
    On 11/2/2024 5:28 PM, WM wrote:

    At least ℵ₀ points
    with ℵ₀ intervals of uncountably many points
    must be between 0 and x₀.
    This criterion is not satisfied by every point x > 0,

    No.
    x₀ ≥ ⅟⌈n+⅟x₀⌉ > ⅟⌈n+1+⅟x₀⌉ > 0

    That requires that x₀ is definable. But it is dark.

    but it is satisfied by
    every definable or visible point x > 0.

    every point.between.splits > 0 of
    differences of ratios of countable.to numbers.

    Of definable splits.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Tue Nov 5 14:30:40 2024
    On 11/5/2024 11:49 AM, WM wrote:
    On 04.11.2024 22:46, Jim Burns wrote:
    On 11/2/2024 5:28 PM, WM wrote:

    At least ℵ₀ points
    with ℵ₀ intervals of uncountably many points
    must be between 0 and x₀.
    This criterion is not satisfied by every point x > 0,

    No.
    x₀ ≥ ⅟⌈n+⅟x₀⌉ > ⅟⌈n+1+⅟x₀⌉ > 0

    That requires that x₀ is definable.

    x₀ is one of
    (ℝ) points.between.splits of
    (ℚ) differences of
    (ℚ⁺) ratios of
    (ℕ) countable.to from.1,
    n is one of
    (ℕ) countable.to from.0.
    x₀ ≥ ⅟⌈n+⅟x₀⌉ > ⅟⌈n+1+⅟x₀⌉ > 0

    But it is dark.

    Whatever 'dark' means,
    x₀ is one of
    (ℝ) points.between.splits of
    (ℚ) differences of
    (ℚ⁺) ratios of
    (ℕ) countable.to from.1,
    n is one of
    (ℕ) countable.to from.0.

    i.
    You could be talking about not.that,
    in which case,
    you aren't denying my claim, which is about that,
    no matter what it seems like you're doing.

    ii.
    You could be talking about that,
    in which case,
    x₀ ≥ ⅟⌈n+⅟x₀⌉ > ⅟⌈n+1+⅟x₀⌉ > 0

    We know
    x₀ ≥ ⅟⌈n+⅟x₀⌉ > ⅟⌈n+1+⅟x₀⌉ > 0
    is true because
    it is a claim in a finite sequence of only
    true.or.not.first.false claims,
    and
    each claim in such a sequence must be true.

    but it is satisfied by
    every definable or visible point x > 0.

    every point.between.splits > 0 of
    differences of ratios of countable.to numbers.

    Of definable splits.

    Of splits of
    (ℝ) points.between.splits of
    (ℚ) differences of
    (ℚ⁺) ratios of
    (ℕ) countable.to from.1.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jim Burns@21:1/5 to All on Tue Nov 5 17:31:16 2024
    On 11/2/2024 5:23 PM, WM wrote:
    On 02.11.2024 19:45, Jim Burns wrote:
    On 11/2/2024 6:15 AM, WM wrote:
    On 02.11.2024 01:55, Richard Damon wrote:

    Infinite sets do not need to have both ends in them.

    Between 0 and 1 there are unit fractions.
    Hence there must be a first one.

    A.
    ⎛ S can be given a total ordering which is
    ⎜ well-ordered both forwards and backwards.
    ⎜ That is, every non-empty subset of S has
    ⎝ both a least and a greatest element in the subset.
    [1]

    A. isn't true of all sets.

    It is true for all sets of
    separated points on the real line.

    ⎛ The union of ⟦0,n⟧ which are doubly.well.ordered
    ⎜ is not a doubly.well.ordered set.

    ⎜ The union of ⟦0,n⟧ which are doubly.well.ordered
    ⎝ holds only separated points on the real line.

    ----
    j+1 = min.{k:j<k}
    j-1 = max.{i:i<j}

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Wed Nov 6 06:46:24 2024
    On 11/5/24 11:45 AM, WM wrote:
    On 05.11.2024 04:08, Richard Damon wrote:
    On 11/4/24 12:11 PM, WM wrote:
    On 04.11.2024 13:14, Richard Damon wrote:
    On 11/4/24 6:07 AM, WM wrote:

    By induction you can prove the sum n(n+1)/2 for every initial
    segment 1+2+3+...+n. But not for all natural numbers.

    But all Natural Numbers can be defined.

    All defined numbers can be summed. Not all natural numbers can be
    summed.

    Why not?

    because most cannot be defined.

    Regards, WM

    But they ARE defined.

    That you can't understand the definition, or accept that definition is
    YOUR problem, and just shows that you are nothing but a stupid
    flat-earther idiot that is stuck in his finite number system.

    THe infinite has blown up your logic system and your mind and left
    behind the darkness you are stuck in.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Wed Nov 6 16:15:48 2024
    On 06.11.2024 12:46, Richard Damon wrote:
    On 11/5/24 11:45 AM, WM wrote:
    On 05.11.2024 04:08, Richard Damon wrote:
    On 11/4/24 12:11 PM, WM wrote:
    On 04.11.2024 13:14, Richard Damon wrote:
    On 11/4/24 6:07 AM, WM wrote:

    By induction you can prove the sum n(n+1)/2 for every initial
    segment 1+2+3+...+n. But not for all natural numbers.

    But all Natural Numbers can be defined.

    All defined numbers can be summed. Not all natural numbers can be
    summed.

    Why not?

    because most cannot be defined.

    But they ARE defined.

    Then sum all of them.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to FromTheRafters on Wed Nov 6 17:26:02 2024
    On 06.11.2024 16:59, FromTheRafters wrote:
    WM presented the following explanation :
    On 06.11.2024 12:46, Richard Damon wrote:
    On 11/5/24 11:45 AM, WM wrote:
    On 05.11.2024 04:08, Richard Damon wrote:
    On 11/4/24 12:11 PM, WM wrote:
    On 04.11.2024 13:14, Richard Damon wrote:
    On 11/4/24 6:07 AM, WM wrote:

    By induction you can prove the sum n(n+1)/2 for every initial
    segment 1+2+3+...+n. But not for all natural numbers.

    But all Natural Numbers can be defined.

    All defined numbers can be summed. Not all natural numbers can be
    summed.

    Why not?

    because most cannot be defined.

    But they ARE defined.

    Then sum all of them.

    -1/12,

    Chuckle.

    why? because you hate that mathematical trick. And no, it is not
    really a sum as we have come to think of sums.

    I asked for a real sum as it can be taken for all definable numbers.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Wed Nov 6 21:27:01 2024
    On 11/6/24 10:15 AM, WM wrote:
    On 06.11.2024 12:46, Richard Damon wrote:
    On 11/5/24 11:45 AM, WM wrote:
    On 05.11.2024 04:08, Richard Damon wrote:
    On 11/4/24 12:11 PM, WM wrote:
    On 04.11.2024 13:14, Richard Damon wrote:
    On 11/4/24 6:07 AM, WM wrote:

    By induction you can prove the sum n(n+1)/2 for every initial
    segment 1+2+3+...+n. But not for all natural numbers.

    But all Natural Numbers can be defined.

    All defined numbers can be summed. Not all natural numbers can be
    summed.

    Why not?

    because most cannot be defined.

    But they ARE defined.

    Then sum all of them.

    Regards, WM

    They will sum to Aleph_0, since there is a countable infinite number of
    them.

    Note, Addition on Natural Numbers is closed for FINITE sums (the sum of
    a finite number of numbers), not necessarily for infinite series of them.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From WM@21:1/5 to Richard Damon on Thu Nov 7 10:13:14 2024
    On 07.11.2024 03:27, Richard Damon wrote:
    On 11/6/24 10:15 AM, WM wrote:
    On 06.11.2024 12:46, Richard Damon wrote:
    On 11/5/24 11:45 AM, WM wrote:
    On 05.11.2024 04:08, Richard Damon wrote:
    On 11/4/24 12:11 PM, WM wrote:
    On 04.11.2024 13:14, Richard Damon wrote:
    On 11/4/24 6:07 AM, WM wrote:

    By induction you can prove the sum n(n+1)/2 for every initial
    segment 1+2+3+...+n. But not for all natural numbers.

    But all Natural Numbers can be defined.

    All defined numbers can be summed. Not all natural numbers can be
    summed.

    Why not?

    because most cannot be defined.

    But they ARE defined.

    Then sum all of them.

    They will sum to Aleph_0

    That is not a sum. It is just another name for infinity.
    Note, Addition on Natural Numbers is closed for FINITE sums (the sum of
    a finite number of numbers), not necessarily for infinite series of them.

    That is because infinitely many always contain dark numbers. All not
    dark numbers can be summed.

    Regards, WM

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Damon@21:1/5 to All on Thu Nov 7 06:58:42 2024
    On 11/7/24 4:13 AM, WM wrote:
    On 07.11.2024 03:27, Richard Damon wrote:
    On 11/6/24 10:15 AM, WM wrote:
    On 06.11.2024 12:46, Richard Damon wrote:
    On 11/5/24 11:45 AM, WM wrote:
    On 05.11.2024 04:08, Richard Damon wrote:
    On 11/4/24 12:11 PM, WM wrote:
    On 04.11.2024 13:14, Richard Damon wrote:
    On 11/4/24 6:07 AM, WM wrote:

    By induction you can prove the sum n(n+1)/2 for every initial >>>>>>>>> segment 1+2+3+...+n. But not for all natural numbers.

    But all Natural Numbers can be defined.

    All defined numbers can be summed. Not all natural numbers can be >>>>>>> summed.

    Why not?

    because most cannot be defined.

    But they ARE defined.

    Then sum all of them.

    They will sum to Aleph_0

    That is not a sum. It is just another name for infinity.
    Note, Addition on Natural Numbers is closed for FINITE sums (the sum
    of a finite number of numbers), not necessarily for infinite series of
    them.

    That is because infinitely many always contain dark numbers. All not
    dark numbers can be summed.

    Regards, WM


    There are no dark numbers. You can't actually define what you mean by a
    "dark number" except in ways that admit that you logic can't create the
    actual infinite sets you want to talk about.

    Sorry, logic based on the presumption of a lie is just broken.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From joes@21:1/5 to All on Thu Nov 7 14:13:10 2024
    Am Thu, 07 Nov 2024 10:13:14 +0100 schrieb WM:
    On 07.11.2024 03:27, Richard Damon wrote:
    On 11/6/24 10:15 AM, WM wrote:
    On 06.11.2024 12:46, Richard Damon wrote:
    On 11/5/24 11:45 AM, WM wrote:
    On 05.11.2024 04:08, Richard Damon wrote:
    On 11/4/24 12:11 PM, WM wrote:
    On 04.11.2024 13:14, Richard Damon wrote:
    On 11/4/24 6:07 AM, WM wrote:

    By induction you can prove the sum n(n+1)/2 for every initial >>>>>>>>> segment 1+2+3+...+n. But not for all natural numbers.
    But all Natural Numbers can be defined.
    All defined numbers can be summed. Not all natural numbers can be >>>>>>> summed.
    Why not?
    because most cannot be defined.
    But they ARE defined.
    Then sum all of them.
    They will sum to Aleph_0
    That is not a sum. It is just another name for infinity.
    Lol. You can also say the series of partial sums diverges. What did you
    think the naturals sum to?

    --
    Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
    It is not guaranteed that n+1 exists for every n.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Moebius@21:1/5 to All on Thu Nov 7 18:23:06 2024
    Am 07.11.2024 um 15:13 schrieb joes:
    Am Thu, 07 Nov 2024 10:13:14 +0100 schrieb WM:
    On 07.11.2024 03:27, Richard Damon wrote:
    On 11/6/24 10:15 AM, WM wrote:
    On 06.11.2024 12:46, Richard Damon wrote:

    They will sum to Aleph_0

    Nope.

    Better conisder the infinitely many numbers 1/2, 1/4, 1/8, ... Now they
    "can be summed" and "sum to" 1. If we'd not take all (i.e. infinitely
    many) terms into account for the sum, the sum would not be 1.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)