报告人：于涛 副教授（汕头大学）
报告题目：Measure complexity and dynamical systems
报告时间：2020年11月21日 9：00-10：00
报告地点：泉山9#204
报告人简介：于涛，男，2007年博士毕业于中国科学技术大学，导师叶向东教授。现任汕头大学副教授。研究方向是拓扑动力系统和遍历理论。主持国家青年科学基金和中国博士后基金各一项，近五年在Trans. Amer. Math. Soc., Erg. Th. Dyn. Sys., Discrete. Contin. Dyn. Sys., J. Differential Equations等学术期刊发表论文多篇。
报告摘要：In this talk, we discuss dynamical systems which have bounded complexity with respect to various semi-metrics. First we show that a system has discrete spectrum if and only if it has bounded complexity with respect to some semi-metrics for amenable group actions. Second we show that a system is rigid if and only if it has bounded complexity with respect to some other metrics.