%0 Journal Article
%T Bounds for multiplicities of automorphic forms of cohomological type on GL_2
%A Simon Marshall
%J Mathematics
%D 2010
%I arXiv
%X We prove various results on the cohomology of arithmetic lattices arising from quaternion algebras over a number field with at least one complex place, including a strong restriction on the allowable weights of cuspidal cohomological automorphic forms and a conditional power saving for their multiplicities when the associated locally symmetric space is a hyperbolic 3-manifold.
%U http://arxiv.org/abs/1002.3569v5