2024西安電子科技大學
非線性分析、微分方程與動力系統系列報告
11月21日(周四) 14:30開始 騰訊會議號:651 463 650 密碼:123456 |
時間 |
報告人 |
題目 |
邀請人 |
14:30-15 :30 |
王智誠 |
Effects of Advection and Diffusion on Principal Eigenvalue of a Periodic-Parabolic Operator |
黃明迪 |
15:30-16:30 |
盛偉杰 |
On the periodic traveling waves and propagating terraces of multistable reaction-advection-diffusion equations in cylinders |
薄偉健 |
報告信息
(以姓氏拼音為序)
On the periodic traveling waves and propagating terraces of multistable reaction-advection-diffusion equations in cylinders
盛偉杰 哈爾濱工業大學
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.
報告人簡介:盛偉杰?,哈爾濱工業大學數學學院教授、博士生導師。2013年畢業于蘭州大學并獲得理學博士學位,2016-2017訪問法國馬賽大學數學系。他的研究方向是微分方程與動力系統及其應用,特別關注反應擴散方程的行波解及傳播問題。盛教授在燃燒、雙穩反應擴散方程的非平面波等方面取得了一些原創性工作,已主持完成多項國家自然科學基金項目,主要成果發表在J.Math. Pures Appl., Calc. Var. PDE, J. Differ. Equa等國際知名學術期刊上。

Effects of Advection and Diffusion on Principal Eigenvalue of a Periodic-Parabolic Operator
王智誠 蘭州大學
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.
報告人簡介:王智誠,蘭州大學數學與統計學院教授,蘭州大學“萃英學者”特聘教授,博士生導師。1994年本科畢業于西北師范大學,2007年在蘭州大學獲理學博士學位。主要成果發表在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. 等國際知名學術期刊上。2010年入選教育部新世紀優秀人才支持計劃,2011和2019年分別獲得甘肅省自然科學二等獎,2016年入選甘肅省飛天學者特聘教授,主持完成多項國家自然科學基金面上項目。目前擔任兩個SCI雜志International J. Bifurc. Chaos 和Mathematical Biosciences and Engineering (MBE) 的編委(Associate editor)

主辦單位:西安電子科技大學數學與統計學院