We give new examples of noncongruence subgroups $\Gamma\subset\SL_2(\Z)$ whose space of
weight-3 cusp forms $S_3(\Gamma)$ admits a basis satisfying the Atkin--Swinnerton-Dyer
congruence relations with respect to a weight-3 newform for a certain congruence subgroup.
@article{1268404801,
author = {Fang, Liqun and Hoffman, J. William and Linowitz, Benjamin and Rupinski, Andrew and Verrill, Helena},
title = {Modular Forms on Noncongruence Subgroups and Atkin--Swinnerton-Dyer Relations},
journal = {Experiment. Math.},
volume = {19},
number = {1},
year = {2010},
pages = { 1-27},
language = {en},
url = {http://dml.mathdoc.fr/item/1268404801}
}
Fang, Liqun; Hoffman, J. William; Linowitz, Benjamin; Rupinski, Andrew; Verrill, Helena. Modular Forms on Noncongruence Subgroups and Atkin--Swinnerton-Dyer Relations. Experiment. Math., Tome 19 (2010) no. 1, pp. 1-27. http://gdmltest.u-ga.fr/item/1268404801/