Quasimodular forms as solutions of Modular differential equations
Number Theory
2021-03-16 v4
Abstract
We study quasimodular forms of depth and determine under which conditions they occur as solutions of modular differential equations. Furthermore, we study which modular differential equations have quasimodular solutions. We use these results to investigate extremal quasimodular forms as introduced by M. Kaneko and M. Koike further. Especially, we prove a conjecture stated by these authors concerning the divisors of the denominators occurring in their Fourier expansion.
Keywords
Cite
@article{arxiv.2002.02736,
title = {Quasimodular forms as solutions of Modular differential equations},
author = {Peter J. Grabner},
journal= {arXiv preprint arXiv:2002.02736},
year = {2021}
}