6月15日(星期四)下午:3:00-5:00,Liu Yue (刘跃), 储继峰学术报告

发布时间:2017-06-12浏览次数:13

报告时间:6月15日(周四)下午300-400

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4:00-500

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