报告题目:Coexistence of strains in some reaction-diffusion systems
报告人:楼元 (上海交通大学)
报告时间:2023年3月3日15:00-16:00
报告地点: 数学楼112
报告摘要:We study the global dynamics of some reaction-diffusion systems for multiple strains and investigate how the coexistence of strains is impacted by the movement of populations and spatial heterogeneity of the environment. For the case of two strains, general conditions for the existence, uniqueness and stability of coexistence steady states are found. Surprisingly, when there is no coexistence of strains, it is possible for the ``weak" strain to be dominant for intermediate diffusion rates, in strong contrast to small and large diffusion cases where the ``weak" strain goes extinct. This talk is based on joint work with Rachidi Salako.
楼元,1984-1991年就读于北京大学数学系,获学士和硕士学位。1991-1995年就读于美国明尼苏达大学数学系并获博士学位。曾在MSRI(1995-96年)和芝加哥大学(1996-98年)做博士后,1998-2021年任教于俄亥俄州立大学数学系,2008年起任教授,曾任美国数学生物研究所副所长,现为上海交通大学数学科学学院讲席教授。 研究兴趣是反应扩散方程及在生物学中的应用,发表学术论文130余篇,目前担任J. Differential Equations、J. Math. Biol.、SIAM J. Appl. Math.等期刊编委以及DCDS-B的共同主编。