yl7703永利官網(wǎng)王賓國誠教授邀請，加拿大紐芬蘭紀(jì)念大學(xué)趙曉強(qiáng)教授將于2022年6月24日-6月26日與我校有關(guān)師生進(jìn)行在線學(xué)術(shù)研討，其中6月25日舉行線上專題學(xué)術(shù)報(bào)告。
報(bào)告題目:Propagation Dynamics of Reaction and Diffusion Equations in a Time-heterogeneous Shifting Environment
時(shí) 間：6月25日上午10:20
騰訊會(huì)議ID：790 1862 7942 密碼：123456
摘 要：In this talk, I will report our recent research on the propagation dynamics of a large class of nonautonomous reaction-diffusion equations with the time-dependent shifting speed having a uniform mean c. Under the assumption that in two directions of the spatial variable there are two limiting equations with one admitting a spreading speed c* and the other being asymptotic to annihilation, we show that the solutions with compactly supported initial data go to zero eventually when c is less than or equal to -c*, the leftward spreading speed is -c* when c is greater than -c*, and the rightward spreading speed is c and c* when c is in the interval (-c*,c*) and c is greater than or equal to c*, respectively. We also establish the existence, uniqueness and nonexistence of the forced traveling wave in terms of the sign of c-c*. This talk is based on a joint work with Dr. Lei Zhang.
趙曉強(qiáng)教授簡介
趙曉強(qiáng)，紐芬蘭紀(jì)念大學(xué)教授。1990年1月在中國科學(xué)院應(yīng)用數(shù)學(xué)研究所獲博士學(xué)位，師從我國運(yùn)動(dòng)穩(wěn)定性理論先驅(qū)秦元?jiǎng)紫壬?。趙曉強(qiáng)教授是國際應(yīng)用動(dòng)力系統(tǒng)和生物數(shù)學(xué)領(lǐng)域中最活躍的學(xué)者之一。他關(guān)于單調(diào)動(dòng)力學(xué)、一致持久性、行波解和漸進(jìn)傳播速度、基本再生數(shù)的理論及應(yīng)用方面的一系列工作已經(jīng)成為了相關(guān)研究領(lǐng)域的經(jīng)典文獻(xiàn)。 迄今為止，趙曉強(qiáng)教授在Comm. Pure Appl. Math.、 J. Eur. Math. Soc.、J. Reine Angew. Math.、J. Math. Pures Appl.、SIAM J. Math. Anal.、 SIAM J.Appl.Math.、J. Nonlinear Science、J. Functional Anal.、 J.Differential Equations、J. Math.Biology、Bull. Math. Biology等國際著名期刊上發(fā)表學(xué)術(shù)論文100余篇，并著有 Dynamical Systems in Population Biology（Springer-Verlag）。此外，趙教授目前擔(dān)任加拿大數(shù)學(xué)會(huì)主辦雜志Canadian Mathematical Bulletin的主編和另外兩個(gè)國際動(dòng)力系統(tǒng)期刊的編委。
甘肅應(yīng)用數(shù)學(xué)中心
甘肅省高校應(yīng)用數(shù)學(xué)與復(fù)雜系統(tǒng)省級重點(diǎn)實(shí)驗(yàn)室
yl7703永利官網(wǎng)
萃英學(xué)院
2022年6月22日
