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Bbinbots reacted to fresh_42's post in the thread A divisor function with an apparent unique fixed point at 392 with
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If you write W(n)=\sum_{\substack{d|n\\d\ge\sqrt{n}}}d-\sum_{\substack{d|n\\d\le\sqrt{n}}}d then the difficulty becomes obvious: We... -
Ffresh_42 replied to the thread A divisor function with an apparent unique fixed point at 392.If you write W(n)=\sum_{\substack{d|n\\d\ge\sqrt{n}}}d-\sum_{\substack{d|n\\d\le\sqrt{n}}}d then the difficulty becomes obvious: We...
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Ffresh_42 replied to the thread A divisor function with an apparent unique fixed point at 392.I don't think so, since your functions have an asymmetry in case N is a square number. The divisor square root doesn't occur in either...
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Ffresh_42 replied to the thread A divisor function with an apparent unique fixed point at 392.Looks funny, although a bit complicated. I don't remember such a function. On the other side, there are quite a few number theoretical...
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Bbinbots posted the thread A divisor function with an apparent unique fixed point at 392 in Advanced Math.For a positive integer N, define W(N) = sum over divisors d of N with d < sqrt(N) of (N/d - d) and E(N) = W(N) - (N - 1). A few...
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AAsher reacted to matheww.parkerr's post in the thread What are Applications where Counting configurations under permutation + cyclic shift with constrained block sampling would be useful? with Like.
That's an interesting idea. I can see it being useful in things like scheduling, where tasks rotate between groups, or in computer...
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Dr.Peterson replied to the thread True bearings question.Elite members are just long-time active members; and what we call ourselves is not necessarily what we really are. (Do you know that I'm... -
Ffresh_42 replied to the thread Help me Understand This Area.Here is a picture of how areas are oriented differently, the cause of the different signs if integrated: So, real areas and...
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FThe question did not ask to compute the definite integral. It said compute the area of f(x) from 0 to 3. The only interpretation to this...
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Mmatheww.parkerr replied to the thread Trig equations.
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Nnasi112 replied to the thread True bearings question.Respect him. He is the doctor not you. @Ted I ask Ted to write down new rules. A punishment to any member who do not respect elite...
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NYes, I saw it as I was about to post, and decided it wasn't necessary to not post, since I did say a couple different things. Is there...
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Nnasi112 replied to the thread Help me Understand This Area.The question did not ask to compute the definite integral. It said compute the area of f(x) from 0 to 3. The only interpretation to this...
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NA good way to think about it is that a definite integral gives signed area, not always the actual geometric area. Areas above the...
