Congruences between Hilbert modular forms of weight , and special values of their -functions
arXiv:1707.01314
Abstract
The purpose of this paper is to show how a congruence between (the Fourier coefficients of) a Hilbert cusp form and a Hilbert Eisenstein series of parallel weight gives rise to congruences between algebraic parts of critical values of their -functions. This is a generalization of a result of V. Vatsal.
43 pages