报 告 人：周韬 博士（中国科学技术大学）
报告题目：Spreading speeds of the nonlocal KPP equations in almost periodic media
报告时间：2018年11月15日（周四）上午08:30-11:00
报告地点：静远楼204学术报告厅
报告人简介：
周韬，中国科学技术大学，博士研究生。师从梁兴教授。主要研究的领域包括非线性偏微分方程，广义特征值及生物数学等方面的研究。
报告摘要：
In this talk, I will introduce the generalized principal eigenvalues and the homogenization methods of nonlocal dispersal equations, which is motivated by the work of Berestycki and Nadin. Base on these techniques, we derive the exact spreading speeds, which can be characterized by generalized principal eigenvalues, of nonloncal KPP equations in almost periodic medias. Moreover, when the diffusion issymmetrical, we show that the spreading speeds in the positive and negative directions are identical even if the reaction term is not invariant with respect to the reflection.