报告人：周效尧（南京师范大学）
               时间：2020/11/11  10:20-11:30
              地点：腾讯会议（ID：297 232 646， 密码：206789）
              摘要：In this talk, we will introduce the notion of packing entropy defined by Feng and Huang. And we will use the packing entropy to measure the set of chaotic pairs in some non-uniform hyperbolic systems.