Every abelian 4-fold should be isogenous to a Jacobian over Fpbar
Speaker:
Jacob Tsimerman, University of Toronto
Date and Time:
Thursday, June 16, 2016 - 9:00am to 9:40am
Location:
Fields Institute, Room 230
Abstract:
Oorts famously asked whether an algebraically closed field k, in every dimension g>=4, there exists an abelian variety not isogenous to a Jacobian. In characteristic 0 this is now a theorem. We present a simple heuristic that suggests that for dimension 4<=g<=9, every abelian variety over the algebraic closure of a finite field is isogenous to infinitely many Jacobians.