Pattern formation in diffusion equations with nonlinear dynamic boundary condition and in bulk-surface diffusion models
主讲专家:
王学锋,香港中文大学(深圳)理工学院教授
摘要:
Motivated by various physical, cellular and ecological applications, there has been a recent resurgence of interest in studying the boundary adsorption-desorption of diffusive substances between a bulk (body) and a surface, by using “bulk-surface models” (involving volumetric densities and surface densities) or by using models involving dynamical boundary conditions for volumetric densities. In some applications, the surface densities are more important than the volume metric ones, for example, concentration of surface densities of active proteins on cell membrane are responsible for cell polarization and cell division. So mathematically speaking, of importance are steady states that are either spikey or have a transition layer structure on the boundary (“surface”). In this talk, I will first review a joint work on rigorous derivation of two models for bulk-surface coupling, then I will talk about a new work on pattern formation for the heat equation coupled with a dynamic boundary condition involving a nonlinear bistable term, as well as for a bulk-surface model. This talk is based on join work with Jingyu Li, Linlin Su, Yantao Wang and Zuming Yang.
报告人简介:
王学锋,1984年毕业于北京大学数学系,1990年获美国明尼苏达大学数学博士学位;1990-2015执教于美国杜兰大学数学系,任长聘正教授;2016年1月至2019年7月,全职任教于南方科技大学数学系,任校长讲座教授、首任副系主任和第二届南方科大教授会会长, 并于2016年获得国家高层次人才项目称号;2019年8月起,任教于香港中文大学(深圳)理工学院,任校长讲座教授,获校长模范教学奖,担任研究生院院长之职。 王学锋教授长期从事偏微分方程研究,致力于为复杂偏微分方程模型建立通用分析工具,是国际知名椭圆和抛物方程研究领域的专家。相关论文发表于CPAM、 Duke Math J、ARMA、CMP、JMPA、SIAM等国际重要数学杂志上,被引2700余次。 2020年起,连续六年入选斯坦福大学团队统计的“终身科学影响力排行榜”与“年度科学影响力排行榜”双榜单。