Noncongruence subgroups and Maass waveforms
(2018)
Journal Article
Strömberg, F. (2019). Noncongruence subgroups and Maass waveforms. Journal of Number Theory, 199, 436-493. https://doi.org/10.1016/j.jnt.2018.11.020
The main topic of the paper is spectral theory for noncongruence subgroups of the modular group. We have studied a selection of the main conjectures in the area: the Roelcke–Selberg and Phillips–Sarnak conjectures and Selberg's conjecture on exceptio... Read More about Noncongruence subgroups and Maass waveforms.