Dependence of spectral bounds on coefficients and domain for cooperative nonlocal dispersal systems

2026年11月9日,周一,10:00 – 11:00

稿件来源:王明新 教授 发布人:叶海霞

讲座题目: Dependence of spectral bounds on coefficients and domain for cooperative nonlocal dispersal systems

讲座时间 Datetime: 2026年11月9日,周一,10:00 – 11:00
地点 Venue: 海琴2号A457
主持人 Host:陈秀卿 教授
报告人 Speaker: 王明新 教授
单位 Affiliation: 山西大学
报告摘要:
We study the spectral bound of cooperative nonlocal dispersal systems on bounded connected domains. The spectral bound is continuous under uniform coefficient and suitable nested domain perturbations, and strictly monotone with respect to the coefficients and the domain whenever one of the two corresponding operators admits a principal eigenvalue. Further results include small-domain limits, large-domain limits for even convolution kernels under suitable coefficient assumptions, and criteria for a unique critical domain size. Applications yield a unique extinction–persistence threshold for a heterogeneous epidemic model and a sharp spreading–vanishing threshold for a scalar free-boundary problem. In the latter case, the limiting boundary at the critical parameter is characterized even in the presence of a zero spectral plateau.
报告人简介:
山西大学特聘教授。1992年破格从讲师晋升为正教授,1994年起享受国务院政府特殊津贴,1997年起任博士生导师。在Trans. Amer. Math. Soc.,Proc. London Math. Soc.,Indiana Univ. Math. J.,J. Math. Pures Appl.,Math. Models Meth. Appl. Sci., SIAM J系列,JFA., CVPDE, JDE等刊物发表论文300余篇。科学出版社出版专著5本(4本独著,1本合著),高等教育出版社出版专著一本(独著),CRC出版社出版英文著作“Nonlinear Second Order Parabolic Equations”(独著),Springer出版社出版英文著作“Nonlinear Second Order Elliptic Equations”(合著,第一作者),清华大学出版社出版教材4本。作为第一获奖人,获教育部自然科学二等奖、江苏省科技进步二等奖和教育部科技进步三等奖各1次,获河南省青年科技奖、江苏省首届青年科学家奖提名奖、江苏省优秀研究生指导教师和华英文化教育基金奖。主持完成国家自然科学基金项目11项,在研一项;主持完成省部级项目9项。