报告题目:Asymptotic behavior and an order inverse problem for coupled subdiffusion systems
报 告 人:刘逸侃
报告时间:2024年11月17日15:00-16:00
报告地点:格物楼数学研究中心528报告厅
报告摘要:Recently decades have witnessed an explosive development of partial differential equations with nonlocality in time from various backgrounds. Among abundant properties discovered for time-fractional PDEs, the most remarkable difference from classical parabolic equations turns out to be the asymptotic behavior of the solution which depends on the orders of time derivatives. Focusing on coupled systems of subdiffusion equations, in this talk we first introduce a new superlinear decay pattern by the coupling of fractional and non-fractional equations. Next, we discuss the uniqueness and numerical reconstruction for the simultaneous determination of fractional orders by observing a single component.
报告人简介:刘逸侃博士,现任日本京都大学理学研究科副教授。他自2011年起师从东京大学山本昌宏(Masahiro Yamamoto)教授,于2015年获得博士学位(数理科学)。之后他在东京大学历任特任研究员、日本学术振兴会外国人特别研究员和特任助教,从2019年起任北海道大学助理教授,于2023年就任现职。他的研究方向为偏微分方程的反问题,近年主要研究时间分数阶偏微分方程的性质及其对反问题的应用。现已发表SCI论文近30篇, MathSciNet和Google Scholar上分别被引用约550次和1240次。