Integrality of a ratio of Petersson norms and level-lowering congruences

Autor: Kartik Prasanna
Rok vydání: 2006
Předmět:
Zdroj: Annals of Mathematics. 163:901-967
ISSN: 0003-486X
DOI: 10.4007/annals.2006.163.901
Popis: We prove integrality of the ratiof, f� /� g, g� (outside an explicit finite set of primes), where g is an arithmetically normalized holomorphic newform on a Shimura curve, f is a normalized Hecke eigenform on GL(2) with the same Hecke eigenvalues as g and � , � denotes the Petersson inner product. The primes dividing this ratio are shown to be closely related to certain level-lowering con- gruences satisfied by f and to the central values of a family of Rankin-Selberg L-functions. Finally we give two applications, the first to proving the integral- ity of a certain triple product L-value and the second to the computation of the Faltings height of Jacobians of Shimura curves.
Databáze: OpenAIRE