Timeline for Can the following sum be counted or expressed in terms of special functions?
Current License: CC BY-SA 4.0
7 events
when toggle format | what | by | license | comment | |
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Jan 13, 2021 at 12:08 | vote | accept | MightyPower | ||
Jan 12, 2021 at 10:23 | comment | added | MightyPower | @მამუკაჯიბლაძე Thank you! | |
Jan 12, 2021 at 0:58 | answer | added | Alexandre Eremenko | timeline score: 6 | |
Jan 11, 2021 at 21:30 | comment | added | მამუკა ჯიბლაძე | There is a question here on MO about this same series (up to substitution) | |
Jan 11, 2021 at 19:52 | comment | added | MightyPower | Yeh, here $a$ - some real parameter. | |
Jan 11, 2021 at 19:31 | comment | added | Noam D. Elkies | It's really $f(|z|;a)$. That aside, if $a$ is a rational multiple of $\pi$ then $f(z;a)$ is a linear combination of terms $\exp 2c|z|$ for some roots of unity $c$ (because $e^{-ian^2}$ is periodic and can be written as a discrete Fourier series). Irrational multiples of $\pi$ seem much harder. | |
Jan 11, 2021 at 18:56 | history | asked | MightyPower | CC BY-SA 4.0 |