题目：Billiards with varied reflection ratios and exterior billiards with barriers

报告人：Prof. Jun Hu （胡俊教授） 

            The City University of New York

摘要：We study the dynamics of a type of billiards with varied reflection ratios on a square or disk table. Induced one-parameter families of exterior billiards and one-parameter of piece-wise circle diffeomorphisms are employed to study the dynamics of this type of billiards.

时间：2017 年 9 月 21 日（周四）16:00-17:00

地点：西大楼 308

邀请人：杨飞 老师