题目：The compact action realization problem
报告人：Alexander Kechris(加州理工学院)
时间：4月11日（星期四），09:00-10:00
地点：Zoom会议，会议号：947 6291 4337，密码：0411
摘要：In this talk I will discuss realizations of countable Borel equivalence relations by continuous actions ofcountable groups, focusing in particular on the problem of realization by continuous actions on compactspaces and more specifically subshifts. This also leads to considering a natural universal space for actionsand equivalence relations via subshifts and the study of the descriptive and topological properties in thisuniversal space of various classes of countable Borel equivalence relations, especially the hyperfinite ones.
