12 jun 2019 -- 15:00
Aula Magna, Dipartimento di Matematica, Pisa
Seminario di geometria algebrica e aritmetica di Pisa
Abstract.
Every abelian variety A over a field k admits a universal extension by an affine k-group scheme. The talk will present a construction of this universal affine extension (first due to Serre when k is algebraically closed of characteristic zero) and discuss its structure, with applications to the category of homogeneous vector bundles over A.