Atkin and Swinnerton-Dyer congruences for meromorphic modular forms

Michael Allen, Ling Long, Hasan Saad

In the 1970's, Atkin and Swinnerton-Dyer conjectured that Fourier coefficients of holomorphic modular cusp forms on noncongruence subgroups of ${\text{SL}}_2(\mathbb{Z})$ satisfy cer…