報告人：于濤
報告題目：Measure complexity and dynamical systems
報告時間：11月21日 9：00-10：00
報告地點：泉山9#204
主辦單位：數學與統計學院、科學技術研究院
報告人簡介：于濤，男，2007年博士畢業于中國科學技術大學，導師葉向東教授?，F任汕頭大學副教授。研究方向是拓撲動力系統和遍歷理論。主持國家青年科學基金和中國博士后基金各一項，近五年在Trans. Amer. Math. Soc., Erg. Th. Dyn. Sys., Discrete. Contin. Dyn. Sys., J. Differential Equations等學術期刊發表論文多篇。
報告摘要：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.