Prof. Michel Brion:Automorphisms and end...

  • 创建时间: 2013-03-11
Speaker: Prof. Michel Brion,法国CNRS



Automorphisms and endomorphisms of projective varieties

Time & Venue: 2013.3.13 4:00pm S703

Consider a projective variety X and its automorphism group, Aut(X). It is known that the connected component of the identity in Aut(X) is an algebraic group, Aut^o(X). In this talk, we will show that any connected algebraic group is isomorphic to Aut^o(X) for some projective variety X. In contrast, we will see that the algebraic semigroups of endomorphisms of X have a very restricted structure.