• A question for set-theorists

    From WM@21:1/5 to All on Wed Nov 20 18:02:40 2024
    1) Let every unit interval after a natural number on the real axis be
    coloured white with exception of the powers of 2 which are coloured
    black. Is it possible to shift the black intervals so that the whole
    real axis becomes black?

    2) Let every unit interval after a natural number on the real axis be
    coloured as above with exception of the intervals after the odd prime
    numbers which are coloured red. Is it possible to shift the red
    intervals so that the whole real axis becomes red?

    What colour has the real axis after you have solved both tasks?

    Regards, WM

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  • From joes@21:1/5 to All on Wed Nov 20 18:06:40 2024
    Am Wed, 20 Nov 2024 18:02:40 +0100 schrieb WM:
    1) Let every unit interval after a natural number on the real axis be coloured white with exception of the powers of 2 which are coloured
    black. Is it possible to shift the black intervals so that the whole
    real axis becomes black?
    Are the intervals closed or not?

    2) Let every unit interval after a natural number on the real axis be coloured as above with exception of the intervals after the odd prime
    numbers which are coloured red. Is it possible to shift the red
    intervals so that the whole real axis becomes red?
    with the exception of = but instead
    or do you mean in addition to?

    What colour has the real axis after you have solved both tasks?
    If you have "solved" them, I suppose it is black if you do the
    second one first.

    --
    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 Nov 20 19:32:38 2024
    On 20.11.2024 19:06, joes wrote:
    Am Wed, 20 Nov 2024 18:02:40 +0100 schrieb WM:
    1) Let every unit interval after a natural number on the real axis be
    coloured white with exception of the powers of 2 which are coloured
    black. Is it possible to shift the black intervals so that the whole
    real axis becomes black?
    Are the intervals closed or not?

    Irrelevant, but assume closed.

    2) Let every unit interval after a natural number on the real axis be
    coloured as above with exception of the intervals after the odd prime
    numbers which are coloured red. Is it possible to shift the red
    intervals so that the whole real axis becomes red?
    with the exception of = but instead

    Well understood.

    What colour has the real axis after you have solved both tasks?
    If you have "solved" them, I suppose it is black if you do the
    second one first.

    No. The density of coloured intervals within the first n intervals is a sequence converging to zero. Every positive eps is undercut. The limit
    cannot be 1.

    Regards, WM

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  • From Moebius@21:1/5 to All on Thu Nov 21 00:46:31 2024
    Am 20.11.2024 um 22:42 schrieb Chris M. Thomasson:
    On 11/20/2024 9:02 AM, WM wrote:

    What colour has the real axis after you have solved both tasks?

    It's dark (black) just like the inside of your asshole, Mückenheim.

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  • From Moebius@21:1/5 to All on Thu Nov 21 00:47:34 2024
    Am 20.11.2024 um 22:50 schrieb Chris M. Thomasson:

    I can make a graph on it to see it visually.

    The inside of his asshole? :-)

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  • From joes@21:1/5 to All on Thu Nov 21 00:18:22 2024
    Am Wed, 20 Nov 2024 19:32:38 +0100 schrieb WM:
    On 20.11.2024 19:06, joes wrote:
    Am Wed, 20 Nov 2024 18:02:40 +0100 schrieb WM:
    1) Let every unit interval after a natural number on the real axis be
    coloured white with exception of the powers of 2 which are coloured
    black. Is it possible to shift the black intervals so that the whole
    real axis becomes black?
    Are the intervals closed or not?
    Irrelevant, but assume closed.
    You forget that you can push open intervals closer together.

    2) Let every unit interval after a natural number on the real axis be
    coloured as above with exception of the intervals after the odd prime
    numbers which are coloured red. Is it possible to shift the red
    intervals so that the whole real axis becomes red?
    with the exception of = but instead
    Well understood.
    Badly written.

    What colour has the real axis after you have solved both tasks?
    If you have "solved" them, I suppose it is black if you do the second
    one first.
    No. The density of coloured intervals within the first n intervals is a sequence converging to zero. Every positive eps is undercut. The limit
    cannot be 1.
    Formally: lim n->oo n/(2^n) = 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 WM@21:1/5 to joes on Thu Nov 21 12:54:22 2024
    On 21.11.2024 01:18, joes wrote:
    Am Wed, 20 Nov 2024 19:32:38 +0100 schrieb WM:
    The density of coloured intervals within the first n intervals is a
    sequence converging to zero. Every positive eps is undercut. The limit
    cannot be 1.

    Formally: lim n->oo n/(2^n) = 0

    But you don't believe it?

    Regards, WM

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  • From joes@21:1/5 to All on Thu Nov 21 21:03:29 2024
    Am Thu, 21 Nov 2024 12:54:22 +0100 schrieb WM:
    On 21.11.2024 01:18, joes wrote:
    Am Wed, 20 Nov 2024 19:32:38 +0100 schrieb WM:
    The density of coloured intervals within the first n intervals is a
    sequence converging to zero. Every positive eps is undercut. The limit
    cannot be 1.
    Formally: lim n->oo n/(2^n) = 0
    But you don't believe it?
    I don't believe in falsehoods. How do you derive the above? Both the denominator and numerator diverge. The expression oo/oo is undefined.

    --
    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 Nov 21 22:44:19 2024
    On 21.11.2024 22:03, joes wrote:
    Am Thu, 21 Nov 2024 12:54:22 +0100 schrieb WM:
    On 21.11.2024 01:18, joes wrote:
    Am Wed, 20 Nov 2024 19:32:38 +0100 schrieb WM:
    The density of coloured intervals within the first n intervals is a
    sequence converging to zero. Every positive eps is undercut. The limit >>>> cannot be 1.
    Formally: lim n->oo n/(2^n) = 0
    But you don't believe it?
    I don't believe in falsehoods. How do you derive the above? Both the denominator and numerator diverge. The expression oo/oo is undefined.

    like lim n->oo n/n^3?

    Regards, WM

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  • From joes@21:1/5 to All on Fri Nov 22 12:28:51 2024
    Am Thu, 21 Nov 2024 22:44:19 +0100 schrieb WM:
    On 21.11.2024 22:03, joes wrote:
    Am Thu, 21 Nov 2024 12:54:22 +0100 schrieb WM:
    On 21.11.2024 01:18, joes wrote:
    Am Wed, 20 Nov 2024 19:32:38 +0100 schrieb WM:
    The density of coloured intervals within the first n intervals is a
    sequence converging to zero. Every positive eps is undercut. The
    limit cannot be 1.
    Formally: lim n->oo n/(2^n) = 0
    But you don't believe it?
    I don't believe in falsehoods. How do you derive the above? Both the
    denominator and numerator diverge. The expression oo/oo is undefined.
    like lim n->oo n/n^3?
    Right. What even is oo^3.

    --
    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 sobriquet@21:1/5 to All on Fri Nov 22 14:52:06 2024
    Op 22/11/2024 om 14:48 schreef sobriquet:
    Op 21/11/2024 om 22:03 schreef joes:
    Am Thu, 21 Nov 2024 12:54:22 +0100 schrieb WM:
    On 21.11.2024 01:18, joes wrote:
    Am Wed, 20 Nov 2024 19:32:38 +0100 schrieb WM:
    The density of coloured intervals within the first n intervals is a
    sequence converging to zero. Every positive eps is undercut. The limit >>>>> cannot be 1.
    Formally: lim n->oo n/(2^n) = 0
    But you don't believe it?
    I don't believe in falsehoods. How do you derive the above? Both the
    denominator and numerator diverge. The expression oo/oo is undefined.


    lim n->oo n/(2^n) = lim n->oo 1/(2^(n-(ln(n)/ln(2)))) = 0

    lim n->oo n/(n^3) = lim n->oo 1/n^2 = 0


    https://www.desmos.com/calculator/ulookjqjcq


    https://www.wolframalpha.com/input?i=lim+n+to+infinity+1%2F%282%5E%28n-%28ln%28n%29%2Fln%282%29%29%29%29


    Uh.. that desmos link should be:

    https://www.desmos.com/calculator/etllgpm3bo

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  • From sobriquet@21:1/5 to All on Fri Nov 22 14:48:47 2024
    Op 21/11/2024 om 22:03 schreef joes:
    Am Thu, 21 Nov 2024 12:54:22 +0100 schrieb WM:
    On 21.11.2024 01:18, joes wrote:
    Am Wed, 20 Nov 2024 19:32:38 +0100 schrieb WM:
    The density of coloured intervals within the first n intervals is a
    sequence converging to zero. Every positive eps is undercut. The limit >>>> cannot be 1.
    Formally: lim n->oo n/(2^n) = 0
    But you don't believe it?
    I don't believe in falsehoods. How do you derive the above? Both the denominator and numerator diverge. The expression oo/oo is undefined.


    lim n->oo n/(2^n) = lim n->oo 1/(2^(n-(ln(n)/ln(2)))) = 0

    lim n->oo n/(n^3) = lim n->oo 1/n^2 = 0


    https://www.desmos.com/calculator/ulookjqjcq


    https://www.wolframalpha.com/input?i=lim+n+to+infinity+1%2F%282%5E%28n-%28ln%28n%29%2Fln%282%29%29%29%29

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