腾讯会议：983 968 734
邀请人：陈二才教授
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.
报告人：梁兵兵教授 波兰科*女王调教-女王调教视频-女王 调教小说数学研究所
报告时间：2020年11月12日 10:00-11:00
题目：Conditional mean dimension
摘要：Mean dimension is an invariant of dynamical systems which can distinguish systems of infinite entropy. We introduce the notion of conditional mean dimension for a topological dynamical system relative to a factor system. With the help of this notion, an inequality is obtained to estimate the mean dimension of the extension system. Conditional mean dimension for a $G$-extension is computed.