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Soma Purkait
Hecke operators in half-integral weight
Journal de théorie des nombres de Bordeaux, 26 no. 1 (2014), p. 233-251, doi: 10.5802/jtnb.865
Article PDF | Reviews MR 3232773 | Zbl 06304187
Class. Math.: 11F37, 11F11

Résumé - Abstract

In [6], Shimura introduced modular forms of half-integral weight, their Hecke algebras and their relation to integral weight modular forms via the Shimura correspondence. For modular forms of integral weight, Sturm’s bounds give generators of the Hecke algebra as a module. We also have well-known recursion formulae for the operators $T_{p^\ell }$ with $p$ prime. It is the purpose of this paper to prove analogous results in the half-integral weight setting. We also give an explicit formula for how operators $T_{p^{\ell }}$ commute with the Shimura correspondence.

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