报告人简介： 韩国高等科学技术学院（KAIST）数学系教授。1999年美国University of Wisconsin 获博士学位。主要研究非线性偏微分方程、非线性扩散、生物数学、反问题等。
报告内容简介：The Allee effect is a phenomenon that the population of a species gets extinct if the density becomes smaller than a critical value. There are population models that include the Allee effect. However, most of population models, if not all of them, allow an extinction only in time asymptotically, but not in a finite time. In this talk we will discuss about the issues to obtain finite time extinction and its consequences in the context of logistic equations and prey-predator models.