8 citations · 31 across the 33 of their papers we have counts for
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math.NT2017★ 4 cited
A simple proof of the Eichler-Selberg trace formula
Alexandru A. Popa, Don Zagier
We give a short proof of the trace formula for Hecke operators on modular forms for the modular group, using the action of Hecke operators on the space of period polynomials.
math.NT2017
On the trace formula for Hecke operators on congruence subgroups, II
Alexandru A. Popa
In a previous paper, we obtained a general trace formula for double coset operators acting on modular forms for congruence subgroups, expressed as a sum over conjugacy classes. Her…