Timeline for A product of polynomials
Current License: CC BY-SA 4.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 5, 2019 at 13:38 | comment | added | darij grinberg | @FedorPetrov: Nice argument (and not one I'd call straightforward)! | |
| Jan 5, 2019 at 12:51 | history | edited | darij grinberg | CC BY-SA 4.0 |
added 30 characters in body
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| Jan 5, 2019 at 7:08 | comment | added | Fedor Petrov | @darijgrinberg this is less or more straightforward: by Pentagonal theorem mod 2 we have $p(x)=\prod (1+x^n)=\prod 1/(1-x^{2n-1})$, and each multiple is represented as a telescopic product of ratios $(1-x^{m(m+1)})/(1-x^m)$ starting with $m=2n-1$ through the orbit of the map $x\to x(x+1)$ | |
| Dec 6, 2018 at 3:41 | comment | added | darij grinberg | Claim = conjecture? Is "m-1" all in a subscript? The general consensus on MO is that answers (unlike comments) should not be telegraphic. | |
| Dec 6, 2018 at 2:09 | history | answered | David S. Newman | CC BY-SA 4.0 |