English

Computing base extensions of ordinary abelian varieties over finite fields

Algebraic Geometry 2025-02-28 v1 Number Theory

Abstract

We study base field extensions of ordinary abelian varieties defined over finite fields using the module theoretic description introduced by Deligne. As applications we give algorithms to determine the minimal field of definition of such a variety and to determine whether two such varieties are twists.

Keywords

Cite

@article{arxiv.2003.09977,
  title  = {Computing base extensions of ordinary abelian varieties over finite fields},
  author = {Stefano Marseglia},
  journal= {arXiv preprint arXiv:2003.09977},
  year   = {2025}
}
R2 v1 2026-06-23T14:23:17.710Z