应兰州大学数学与统计学院李万同教授和孙建文副教授邀请，美国俄亥俄州立大学LamKing-Yeung教授将于2024年9月12日至2024年9月14日访问兰州大学并举办学术讲座，诚邀全校师生参加！

题目：The Nonlocal Selection of Spreading Speed in Shifting Environments

时间：9月13日上午10:00

地点：腾讯会议174-331-728

摘要：Since the work of [Potapov & Lewis, 2004] and [Berestycki et al. 2009], there has been a lot of interest in the population dynamics driven by climate change. Of particular interest is the persistence and invasion profile of species as their suitable habitat are shifting poleward. In this talk, I will discuss some results concerning determination of spreading speed in Fisher-KPP equation with shifting heterogeneity. Surprisingly, in some cases the spreading speed is no longer determined by the formula 2*sqrt(rd), i.e. it exceeds the level predicted by local conditions. We will explain the nonlocal mechanism behind the speed enhancement. If time allows, we will also survey some related works motivated by the conjecture of Shigesada et al concerning the co-invasion of competing tree species into an open space. This talk includes joint work with Prof. Xiao Yu (South China Normal).

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报告人简介

林经洋(King Yeung Lam）教授2006年本科毕业于香港中文大学数学系，2011 年于美国明尼苏达大学获得博士学位，师从倪维明教授。在美国俄亥俄州立大学先后于Mathematical Biosciences Institute 任 Croucher Foundation 博士后。研究领域为偏微分方程，特别是拋物椭圆方程、Hamilton-Jacobi equations、以及自由边界问题，及其在生物学中的应用。己在 "SIAM J. Appl. Math. ", "SIAM J. Math. Anal. ", "J. Differential Equations", "Calc. Var. Partial Differential Equations", "J. Funct. Anal.", "Mem. Amer. Math. Soc.", "Indiana Univ. Math. J. ", " J. Math. Biol. ", "Bull. Math. Biol. " 等国际杂志上发表学术论文50余篇。目前于"Discrete. Cont. Dyn. Syst. Ser. B", "J. Math. Biol. ", "Math. Appl. Sci. Eng." 担任编委。

甘肃应用数学中心

数学与统计学院

萃英学院

2024年9月11日