Time:  3:30pm  4:30 pm 
Room: 
Wean Hall 8220

Speaker: 
François Le Maître Institut de Mathématiques de JussieuPRG Université Paris Diderot 
Title: 
Ample generics and full groups

Abstract: 
In this talk, I will explain why the full group of the action of the rationals on the real line is an example of a connected topologically simple Polish group with ample generics, providing a natural answer to a question of A. Kechris and C. Rosendal. If time permits, I will discuss the following open question: is there a Polish group with ample generics which is not quasi nonarchimedean ? The talk is based on a joint work with Adriane Kaïchouh. 