Topology Seminar (Introductory Talk): Rigidity and flexibility for discrete subgroups of semisimple Lie groups

Seminar | March 14 | 2-3 p.m. | 740 Evans Hall

 Beatrice Pozzetti, University of Heidelberg

 Department of Mathematics

After introducing semisimple Lie groups as groups of isometries of symmetric spaces, I will give a panorama on some classical results about their discrete subgroups. On the one hand, I will discuss Mostow rigidity and Margulis superrigidity, on the other I will discuss how the Teichmuller space gives examples of flexible subgroups of Lie groups, as well as bending constructions.