关于举行苏州大学赵云教授和复旦大学张国华教授学术报告的通知

报告题目1：Unconventional Ergodic Averages

报 告 人：赵云 教授 （苏州大学）

报告时间：12月3日（周四）下午 14:30—15:10

报告地点：4318

 

 

报告题目2：Some Aspects of Recurrence and Sensitivity in Topological Dynamics

报 告 人：张国华 教授 （复旦大学）

报告时间：12月3日 （周四）下午 15:20—16:00

报告地点：4318

 

 

 

欢迎广大师生参加！

 

                                                 数学学院

                                              2015年12月1日        

 

报告摘要1：In this talk, we discuss two kinds of unconventional ergodic averages. One considers a restrictive condition induced by a continuous function, and we get some formulas to relate different types of conditional ergodic averages. The other considers the ergodic averages over observable measures which may be strictly smaller than the space of all invariant measures, in this case  we get a formula to describe the difference between the classical ergodic averages.

 

报告摘要2：In this talk, I will report some recent results concerning recurrence and sensitivity in topological dynamics. Precisely, I will introduce dynamically compact systems as a new concept of a chaotic dynamical system, and then discuss its relationship with some other stronger forms of sensitivity.The talk is based on joint works with Wen Huang (China) and Sergiy Kolyada and Danylo Khilko (Ukraine).