报告时间：2020年9月8日（星期二）14:10

报告平台：腾讯会议（线上） ID: 955 577 543

报告人：于涛副教授

工作单位：汕头大学

举办单位：英国威廉希尔公司

报告简介：

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.

报告人简介：

于涛，汕头大学数学系副教授，研究方向是拓扑动力系统和遍历理论，近五年在Transactions of the American Mathematical Society, Ergodic Theory and Dynamical Systems等学术期刊发表论文多篇。