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报告题目： Properties of invariant measures in dynamical systems with the shadowing property
报告人：李健 副教授 （汕头大学）
报告时间：2016年7月7日（星期四）下午4:00-5:00
报告地点：四号楼4131室

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                                                                数学学院
                                                              2016年7月6日

报告摘要：

    For dynamical systems with the shadowing property, we provide a method of approximation

of invariant measures by ergodic measures supported on odometers and their almost 1-1 extensions. For a topologically transitive system with the shadowing property, we show that ergodic measures supported on odometers are dense in the space of invariant measures, and then ergodic measures are generic in the space of invariant measures. We also show that for every $c/geq 0$ and $/eps>0$ the collection of ergodic measures (supported on almost 1-1 extensions of odometers) with entropy between $c$ and $c + /eps$ is dense in the space of invariant measures with entropy at least $c$. Moreover, if in addition the entropy function is upper semi-continuous, then for every $c/geq 0$ ergodic measures with entropy $c$ are generic in the space of invariant measures with entropy at least $c$. This is a joint work with Piotr Oprocha.