题 目:Spectral bounds of cooperative nonlocal dispersal systems: monotonicity, domain limits, and applications
主讲人:王明新 教授
单 位:山西大学
时 间:2026年11月13日 15:30
地 点:南阶教室
摘 要: We study the spectral bound of cooperative nonlocal dispersal systems on bounded 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 if either corresponding operator 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 in the interval length for a heterogeneous epidemic model and a sharp spreading-vanishing threshold for a scalar free-boundary problem. These thresholds remain valid when the spectral bound vanishes on an interval, with the critical habitat length given by its right endpoint. This is a joint work with Lei Zhang.
简 介:王明新,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J. Math. Pures Appl.,Proc. London Math. Soc.,Indiana Univ. Math. J.,Trans. Amer. Math. Soc.,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。