English

Ordinary Primes for Abelian Surfaces

Number Theory 2015-09-29 v2

Abstract

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.

Keywords

Cite

@article{arxiv.1506.04784,
  title  = {Ordinary Primes for Abelian Surfaces},
  author = {William F. Sawin},
  journal= {arXiv preprint arXiv:1506.04784},
  year   = {2015}
}

Comments

4 pages - added references

R2 v1 2026-06-22T09:54:08.656Z