Mathematics – Number Theory
Scientific paper
2003-11-21
Mathematics
Number Theory
13 pages, to appear in Math Research Letters
Scientific paper
Let T_k denote the Hecke algebra acting on newforms of weight k and level N.
We prove that the power of p dividing the index of T_k inside its normalisation
grows at least linearly with k (for fixed N), answering a question of Serre. We
also apply our method to give heuristic evidence towards recent conjectures of
Buzzard and Mazur.
Calegari Frank
Emerton Matthew
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