Timeline for Integrality of ratios of $\ell$-sequences
Current License: CC BY-SA 4.0
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 31, 2021 at 14:39 | vote | accept | T. Amdeberhan | ||
| Jan 29, 2021 at 23:08 | comment | added | Fedor Petrov | @HenriCohen if you prefer, or think that $x$ is complex. In the theory of Chebyshev polynomial twice-cosines are more usual that twice-coshines or Zhukovskiy maps ($\ell=z+1/z$, $a_m=(z^m-z^{-m})/(z-z^{-1})$). | |
| Jan 29, 2021 at 22:18 | comment | added | Henri Cohen | Since $\ell\ge2$, shouldn't it be $\ell=2\cosh x$ and $a_m=\frac{\sinh(mx)}{\sinh(x)}$ ? | |
| Jan 29, 2021 at 21:32 | history | answered | Fedor Petrov | CC BY-SA 4.0 |