11-26【方 健】管楼1418 吴文俊数学重点实验室Dynamical Systems Seminar

时间:2019-11-21

报告题目:Almost pulsating waves in time-space periodic media


报告人:方健,哈尔滨工业大学


时间:2019年11月26日(星期二)14:30--15:30


地点:东区管理科研楼1418教室


摘要:Pulsating wave has a property of recurrence up to certain time and space shifts. It plays an important role in the study of propagation dynamics for reaction-diffusion equations in time or space periodic media, but evidently it may not exist in time-space periodic media. In this talk, for a class of dynamical systems admitting the comparison principle, we construct a kind of generalized transition wave that was introduced by H. Berestycki and F. Hamel in 2012. It turns out that the constructed transition wave has a property of almost recurrence. The almost property reflects the joint influence of time and space periodicities. This talk is based on joint works with Xiao Yu and Xiaoqiang Zhao.


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