26 citations · 154 across the 34 of their papers we have counts for
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math.NT2009★ 4 cited
Lifts of projective congruence groups
Ian Kiming, Matthias Schuett, Helena Verrill
We show that noncongruence subgroups of SL_2(Z) projectively equivalent to congruence subgroups are ubiquitous. More precisely, they always exist if the congruence subgroup in ques…
math.NT2005★ 2 cited
CM newforms with rational coefficients
Matthias Schuett
We classify newforms with rational Fourier coefficients and complex multiplication for fixed weight up to twisting. Under the extended Riemann hypothesis for odd real Dirichlet cha…