报告题目： Breather solutions for the nonlinear wave equation in inhomogeneous media 报 告 人： 冀书关 报告人所在单位： 吉林大学 & 东北师范大学 报告日期： 2019-07-24 星期三 报告时间： 14:30-15:20 报告地点： 光华东主楼1801 报告摘要： Breather solutions are quite rare for the nonlinear wave equations. Up to rescaling, the only spatially homogeneous model known to admit such solutions is the sine-Gordon equation. In contrast, it is expected to be different for the nonlinear wave equation in inhomogeneous media modelling by $\rho(x)u_{tt}-(\mu(x)u_x)_x=f(x,u)$. With this spatially inhomogeneous model, for the first time we discover the existence of many breather solutions. This is a joint work with Professor C.E. Wayne. 海报 本年度学院报告总序号： 171