数学系学术讲座(十七)

发布时间: 2024-03-26 来源: 信息科学技术学院

  目:Some results on isochronous centers

内容简介:In this talk I will introduce some new results on isochronous centers of planar differential systems. Firstly, I will give the complete classifications of the topological phase portraits for uniform isochronous centers with homogeneous nonlinearities of degree 5 and 6 respectively. Secondly, I will provide a complete solution of the isochronicity problem on complex Hamiltonian systems with homogeneous nonlinearities of any degree by a new powerful topology method. Thirdly, I will show the non-isochronicity of piecewise centers formed by two Hamiltonian systemswith homogeneous nonlinearities of any degree.

报告人:董广峰

报告人简介:暨南大学数学系副教授。本科毕业于中国海洋大学数学与应用数学专业,博士毕业于北京大学基础数学专业;曾在中山大学数计学院从事博士后研究;2015年入职暨南大学数学系。20239月至20243月在巴塞罗那自治大学做访问学者。研究方向为常微分方程定性理论。

  间:202441日(周一)下午1600开始

  点:南海楼224

 

热烈欢迎广大师生参加!

 

 

信息科学技术学院

2024326