2024西安电子科技大学
非线性分析、微分方程与动力系统系列报告
11月21日(周四) 14:30开始 腾讯会议号:651 463 650 密码:123456 |
时间 |
报告人 |
题目 |
邀请人 |
14:30-15 :30 |
王智诚 |
Effects of Advection and Diffusion on Principal Eigenvalue of a Periodic-Parabolic Operator |
黄明迪 |
15:30-16:30 |
盛伟杰 |
On the periodic traveling waves and propagating terraces of multistable reaction-advection-diffusion equations in cylinders |
薄伟健 |
报告信息
(以姓氏拼音为序)
On the periodic traveling waves and propagating terraces of multistable reaction-advection-diffusion equations in cylinders
盛伟杰 哈尔滨工业大学
摘要:This talk is concernd with the periodic traveling waves and propagating terraces for multistable reaction-advection-diffusion equations in cylinders. We establish the alternative of wave solutions, that is, either there is a unique, asymptotically stable periodic traveling wave connecting 0 to 1 directly, or there is a unique propagating terrace connecting 0 to 1. Under the assumption that all wave speeds in propagating terrace are not equal to each other, we further obtain that the propagating terrace is asymptotically stable if it exists. Moreover, the sufficient and necessary conditions for the existence of periodic traveling waves connecting 0 to 1 are given.
报告人简介:盛伟杰,哈尔滨工业大学数学学院教授、博士生导师。2013年毕业于兰州大学并获得理学博士学位,2016-2017访问法国马赛大学数学系。他的研究方向是微分方程与动力系统及其应用,特别关注反应扩散方程的行波解及传播问题。盛教授在燃烧、双稳反应扩散方程的非平面波等方面取得了一些原创性工作,已主持完成多项国家自然科学基金项目,主要成果发表在J.Math. Pures Appl., Calc. Var. PDE, J. Differ. Equa等国际知名学术期刊上。
Effects of Advection and Diffusion on Principal Eigenvalue of a Periodic-Parabolic Operator
王智诚 兰州大学
摘要:In this paper, we investigate the asymptotic behaviours of the principal eigenvalue of linear periodic-parabolic operator with Neumann boundary condition on bounded domain , Specifcally, we study the asymptotic behaviours of principal eigenvalue in the following five cases: (i) with ; (i) with ; (iii) with ; (iv) ; and (v) for fixed . As an application, we use these results to get some threshold-type dynamical results for an epidemic SIS model in time-periodic environment.
报告人简介:王智诚,兰州大学数学与统计学院教授,兰州大学“萃英学者”特聘教授,博士生导师。1994年本科毕业于西北师范大学,2007年在兰州大学获理学博士学位。主要成果发表在Arch. Rational Mech. Anal.、JMPA、Trans. AMS、Indiana Univ. Math. J. SIAM J. Math. Anal.、SIAM J. Appl. Math.、Calc. Var. PDE、J. d’Anal. Math.、JDE、Nonlinearity、J. Nonlinear Sci. 等国际知名学术期刊上。2010年入选教育部新世纪优秀人才支持计划,2011和2019年分别获得甘肃省自然科学二等奖,2016年入选甘肃省飞天学者特聘教授,主持完成多项国家自然科学基金面上项目。目前担任两个SCI杂志International J. Bifurc. Chaos 和Mathematical Biosciences and Engineering (MBE) 的编委(Associate editor)
主办单位:西安电子科技大学数学与统计学院