主講人：孫寧奎 山東師范大學副教授

時間：2025年2月21日16：30

地點：三號樓332室

舉辦單位：數理學院

主講人介紹：孫寧奎，山東師范大學副教授，2016年于同濟大學獲得理學博士學位，研究方向為非線性偏微分方程和生物數學，發表論文10余篇，部分成果發表在Math. Ann., Calc. Var. Partial Differential Equations, J. Differential Equations等期刊。主持國家自然科學基金青年項目1項，山東省優秀青年基金1項，山東省青創團隊項目1項。

內容介紹：This talk is devoted to the dynamical behavior of solutions to some free boundary problems with time-delay and advection. We obtain that when the coefficient of advection is small, there exists a vanishing-spreading dichotomy result; when the coefficient of advection is medium-sized, there exists a vanishing-transition-virtual spreading trichotomy result; when the coefficient of advection is large, only vanishing happens. We also show that the profiles of (virtual) spreading solutions are uniquely determined by the corresponding semi-waves.