Type: Article
Publication Date: 2010-01-01
Citations: 13
DOI: https://doi.org/10.1080/10586458.2010.10129064
We give new examples of noncongruence subgroups Γ ⊂ SL2(ℤ) whose space of weight-3 cusp forms S 3(Γ) admits a basis satisfying the Atkin–Swinnerton-Dyer congruence relations with respect to a weight-3 newform for a certain congruence subgroup.