The unbounded denominator conjecture for the noncongruence subgroups of index $7$
Number Theory
2020-07-13 v2
Abstract
We study modular forms for the minimal index noncongruence subgroups of the modular group. Our main theorem is a proof of the unbounded denominator conjecture for these groups, and we also provide a study of the Fourier coefficients of Eisenstein series for one of these minimal groups.
Keywords
Cite
@article{arxiv.2007.01336,
title = {The unbounded denominator conjecture for the noncongruence subgroups of index $7$},
author = {Andrew Fiori and Cameron Franc},
journal= {arXiv preprint arXiv:2007.01336},
year = {2020}
}