讲座题目🍙：Discontinuous nonlinearity and traveling waves with free boundary 主讲人🔰：Professor Yong-Jung Kim 主持人：潘兴斌 教授 开始时间：2019-07-16 14:00:00 结束时间：2019-07-16 15:00:00 讲座地址🏇🏿：闵行数学楼401报告厅 主办单位🏃🏻♀️➡️：数学科学学院
报告人简介🤼♀️： Yong-Jung Kim obtained his Ph.D. in mathematics from University of Wisconsin at Madison in 1999. His thesis title was `Scaling invariance in hyperbolic conservation laws'. He had his post-doctoral positions at Universities of Minnesota, Toronto, and California-Riverside. He is currently a full professor at KAIST (Korean Advanced Institute of Science and Technology). His current research interests are focused on diffusion theory, population dynamics, and mathematical modeling. 报告内容💅🏿： In this talk we consider a bistable nonlinearity with a jump discontinuity at a stable steady state. To handle the discontinuous nonlinearity, we define the weak solution in terms of set-valued integration. The existence, uniqueness, and the comparison property still hold. One of new feature of the problem is finite time extinction and existence of traveling waves with a free boundary. |
