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Questions about modular forms and related areas

14 votes
1 answer
1k views

A question on a paper of K. Murty

Let $f=\sum_{n\ge 1}a_nq^n$ be a normalized Hecke eigenform which is not of CM-type, of weight $k\ge 2$ for the congruence subgroup $\Gamma_0(N)$. Let $a\in\mathbb{Z}$ and define $$ \pi_f(x,a):=\#\{p\ …
5 votes
2 answers
236 views

Irreducibility of the $n$th symetric power of the reduction of the Galois representation of ...

In "On $\ell$-adic representations attached to modular forms II", Ribet proved that the $\ell$-adic representation $\rho_{f,\ell}$ attached to a non-CM newform form $f$ satisfies $${\rm SL}_2(\mathbb …