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Main Author: Kobayashi, Masato
Format: Preprint
Published: 2023
Subjects:
Online Access:https://arxiv.org/abs/2307.15206
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author Kobayashi, Masato
author_facet Kobayashi, Masato
contents Ramanujan (1916) and Shen (1999) discovered differential equations for classical Eisenstein series. Motivated by them, we derive new differential equations for Eisenstein series of level 2 from the second kind of Jacobi theta function. This gives a new characterization of a system of differential equations by Ablowitz-Chakravarty-Hahn (2006), Hahn (2008), Kaneko-Koike (2003), Maier (2011) and Toh (2011). As application, we show some arithmetic results on Ramanujan's tau function.
format Preprint
id arxiv_https___arxiv_org_abs_2307_15206
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle Ramanujan-Shen's differential equations for Eisenstein series of level 2
Kobayashi, Masato
Number Theory
2020 Primary:11M36, Secondary:11F11
Ramanujan (1916) and Shen (1999) discovered differential equations for classical Eisenstein series. Motivated by them, we derive new differential equations for Eisenstein series of level 2 from the second kind of Jacobi theta function. This gives a new characterization of a system of differential equations by Ablowitz-Chakravarty-Hahn (2006), Hahn (2008), Kaneko-Koike (2003), Maier (2011) and Toh (2011). As application, we show some arithmetic results on Ramanujan's tau function.
title Ramanujan-Shen's differential equations for Eisenstein series of level 2
topic Number Theory
2020 Primary:11M36, Secondary:11F11
url https://arxiv.org/abs/2307.15206