2 papers
math.NT2019
Note on Fourier expansions at cusps
François Brunault, Michael Neururer
This was originally an appendix to our paper `Fourier expansions at cusps' [arXiv:1807.00391]. The purpose of this note is to give a proof of a theorem of Shimura on the action of…
math.NT2017
On the modularity of endomorphism algebras
François Brunault
We use the adelic language to show that any homomorphism between Jacobians of modular curves arises from a linear combination of Hecke modular correspondences. The proof is based o…