报告题目：Shadowing for nonuniformly hyperbolic maps in Hilbert spaces

报告时间🩹🧑🏻‍💻：2023年12月18日（星期一）晚上19:00-20:00

报告地点🏃🏻‍♂️：沙河校区🧖，二教111

报告人：任宪坤🚴‍♀️，重庆大学，讲师

报告摘要：In this talk, we will discuss a shadowing lemma for nonuniformly hyperbolic maps in Hilbert spaces. As applications, we will show positive Lyapunov exponents of a hyperbolic measure can be approximated by positive Lyapunov exponents of hyperbolic periodic measures and give a upper bound of the metric entropy using the exponential growth rate of those periodic orbits.

报告人简介🧗🏻‍♀️：任宪坤博士，重庆大学讲师，研究领域为微分动力系统与遍历论，主持国家自然科学基金青年项目，在JDDE, DCDS等杂志发表论文多篇♟。