Logic Seminar
Minh Tran
Notre Dame
The inverse Kemperman problem
Abstract: A recurring theme in model theory is that under suitable assumptions (stabilty, NIP, small expansions, etc), definable groups resemble geometric groups (algebraic groups, Lie groups, etc) at different levels. I will explain how this comes into play in the recent solution of the Inverse Kemperman problem by Jinpeng An, Yifan Jing, Ruixiang Zhang and I. Our proof also uses some descriptive set theory, in particular, an automatic continuity result.
Tuesday September 28, 2021 at 4:00 PM in 636 SEO