报告地点：九龙湖校区数学学院第一报告厅
报告人：Liu Yue
报告人单位：University of Texas
报告题目：Break waves and solitary waves to the rotation-two-component Camassa-Holm system
报告摘要：The rotation-two-component Camassa-Holm system models the equatorial water waves with the effect of the Coriolis force. The quasi-nonlinear nature of the system suggests that smooth initial data may develop finite time singularity, giving rise to the so-call wave-breaking phenomenon. On the other hand,the balance between the nonlinearity and dispersion makes it possible to support solitary waves, sometimes even with singularities. In this talk I will discuss these two types of solutions.
报告时间：6月15日（周四）下午4：00-5：00
报告地点：九龙湖校区数学学院第一报告厅
报告人：褚继峰
报告人单位：上海师范大学
报告题目：Existence and stability of periodic orbits of singularKeplerian-like systems
报告摘要：We present a planar system which depends periodically on time. If the force admits a repulsive singularity, we show that such a system has a family of periodic orbits rotating around the originwith angular momentum from zero to infinity. We also give the stability results for a singular semilinear system
