A story of (non) square

Speaker：Qing Liu (University of Bordeaux)

Time：2026-5-28 14:30

Location：Conference Room S306 at Experiment Building at Haiyun Campus

Abstract:

I will explain how one can use the fact that the order of the Shafarevich-Tate group of an abelian variety is not a square to prove that the order of the Brauer group of a surface is a square!