报告人：张国华（复旦大学）

               时间：2020/11/11  9:00-10:15

              摘要：In this talk I will report some recent progress about past theory of amenable group actions by      introducing multiorders for countable amenable groups, which is a refined version of invariant random order introduced by Kieffer in 1975. This is a joint work with Piotr Oprocha and Tomasz Downarowicz.