%0 Journal Article
%T Ordinary Primes for Abelian Surfaces
%A William F. Sawin
%J Mathematics
%D 2015
%I arXiv
%X We compute the density of the set of ordinary primes of an abelian surface over a number field in terms of the l-adic monodromy group. Using the classification of l-adic monodromy groups of abelian surfaces by Fite, Kedlaya, Rotger, and Sutherland, we show the density is 1, 1/2, or 1/4.
%U http://arxiv.org/abs/1506.04784v2