J an 2 00 3 Modular Hecke Algebras and their Hopf Symmetry

@inproceedings{Connes2009JA2,
  title={J an 2 00 3 Modular Hecke Algebras and their Hopf Symmetry},
  author={Alain Connes and Henri Moscovici},
  year={2009}
}
The motivation for this paper comes from the coexistence of two a priori unrelated structures on modular forms, namely the algebra structure given by the pointwise product on one hand, and the action of the Hecke operators on the other. To relate them ab initio, we associate to any congruence subgroup Γ of SL(2,Z) a crossed product algebra A(Γ), the modular… CONTINUE READING