讲座题目:Turing-Hopf bifurcation in the reaction-diffusion system
主 讲 人:宋永利教授
讲座时间:2020年11月19日上午10:00-11:00
讲座地点:理学院201室
欢迎有兴趣的师生前来聆听!
理学院
2020年11月16日
摘要: In this talk, we first derive the algorithm for the normal forms associated with the Turing-Hopf bifurcation in the reaction-diffusion system without or with delay, which can be used to investigate the spatiotemporal dynamical classification neat the Turing-Hopf bifurcation point in the parameter plane. Then, as an illustration of this procedure, we consider a diffusive predator-prey model with weak Allee effect and delay. By investigating the dynamics of the corresponding normal form of Turing-Hopf bifurcation induced by diffusion and delay, the spatiotemporal dynamics near this bifurcation point can be divided into six categories. Especially, stable spatially homogeneous/inhomogeneous periodic solutions and steady states, and the transition from one kind of spatiotemporal patterns to another are found.
主讲人简介:
宋永利,杭州师范大学教授、博士生导师、浙江省高等学校“钱江学者”特聘教授、中国生物数学会理事。曾出访西班牙、澳大利亚、加拿大、美国做博士后或合作研究。已在SIAM J. Applied Dynamical Systems, Journal of Differential Equations, Journal of Nonlinear Science、Nonlinearity、 IEEE Transactions on Neural Networks and Learning Systems、Physica D等国际学术期刊发表学术论文70余篇。连续多年入选中国高被引学者榜单(数学类)。曾主持、或作为项目组主要成员参与国家自然科学基金重点项目、面上项目、上海市自然科学基金、浙江省自然科学基金等项目十余项。2017年获威海市科学技术一等奖(3/3)、2020年获杭州市优秀教师称号。