学术报告报告题目1：UnconventionalErgodic 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：SomeAspects 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
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数学学院
2015年12月1日
报告摘要1：Inthis talk, we discuss two kinds of unconventional ergodic averages.One considers a restrictive condition induced by a continuousfunction, and we get some formulas to relate different types ofconditional ergodic averages. The other considers the ergodicaverages over observable measures which may be strictly smaller thanthe space of all invariant measures, in this case we get aformula to describe the difference between the classical ergodicaverages.
报告摘要2：Inthis talk, I will report some recent results concerning recurrenceand sensitivity in topological dynamics. Precisely, I will introducedynamically compact systems as a new concept of a chaotic dynamicalsystem, and then discuss its relationship with some other strongerforms of sensitivity.The talk is based on joint works with Wen Huang(China) and Sergiy Kolyada and Danylo Khilko (Ukraine).