Extremely Amenable Automorphism Groups of Countable Structures

Explore the concept of extreme amenability in topological groups during this mathematics seminar by Su Gao from Nankai University. Delve into the question of how many pairwise non-isomorphic extremely amenable groups exist. Discover the demonstration of continuum many pairwise non-isomorphic extremely amenable groups that are automorphism groups of countable structures and Polish. Examine related results from the perspective of descriptive set theory. Learn about the collaborative work with Mahmood Etedadialiabadi and Feng Li in this 75-minute presentation, part of the Colloque des sciences mathématiques du Québec/CSMQ series at the Centre de recherches mathématiques.

Su Gao: Extremely amenable automorphism groups of countable structures