Here you will find the list of upcoming speakers
2026-01-05 : Immanuel van Santen (University of Bern/University of Basel).
Title: Algebraic families of automorphisms and solvability
Abstract: This talk is based on joint work with Serge Cantat, Hanspeter Kraft, and Andriy Regeta. We investigate the following question for a variety X: given an irreducible family of automorphisms of X that contains the identity, under which conditions does this family generate an algebraic subgroup of Aut(X)?
When the members of the family commute pairwise and X is affine, a result of Serge Cantat, Andriy Regeta, and Junyi Xie shows that such a family indeed generates an algebraic subgroup. We extend this theorem to the case where the family generates a solvable subgroup and X is only assumed to be quasi-affine. We also present several applications of this result, for example to Borel subgroups in Aut(X).
2026-02-02 : Gene Freudenburg (Western Michigan University).
Title: Presentations, embeddings and automorphisms of homogeneous spaces for SL₂(C)
Abstract:
2026-06-01 : Christian Urech (ETH Zurich).