报告题目:Bifurcation of limit cycles near heteroclinic loops in near-Hamiltonian systems
时 间:2021-09-03 (星期五) 16:00 ~ 2021-09-03 (星期五) 17:30
地 点:腾讯会议(会议号:403 173 473)
主 办:数学与统计学院, 福建省分析数学及应用重点实验室、福建省应用数学中心(福建师范大学)、福建师范大学数学研究中心
参加对象:感兴趣的老师和研究生
报告摘要:In this talk, we study the bifurcation of limit cycles near a heterocilinc loop with hyperbolic saddles in a perturbed planar Hamiltonian system. We present a method for computing the coefficients in the corresponding expansion of the first order Melnikov function. With more those coefficients, more limit cycles could be determined around the heteroclinic loop. An example of studying limit cycles produced from a heteroclinic loop with 2 saddles is investigated to illustrate our method.
报告人简介:田云,加拿大西安大略大学应用数学博士,现为上海师范大学数理学院副教授,主要从事微分方程定性理论、计算机符号计算和传染病模型等方向的研究。已在《Journal of Differential Equations》《Proceedings of the Royal Society A》《International Journal of Bifurcation and Chaos》等期刊发表论文近20篇,主持国家自然科学基金项目两项,参与多项国家自然科学基金项目,入选上海青年东方学者和上海市青年科技启明星项目。