Limit cycles produced near a singular point at Lienard systems

发布时间：2025-11-25 作者：浏览次数：

Speaker:	田云	DateTime:	2025年12月1日（周一）10:00—12:00
Brief Introduction to Speaker: 田云，教授，博士生导师，博士毕业于加拿大西安大略大学应用数学系，从事常微分方程定性理论、计算机符号计算和传染病模型等方向的研究，已发表相关学术论文30余篇，先后主持国家自然科学基金3项。		Place:	国交2号楼315会议室
Abstract:In this talk, we present another group of equivalent quantities for studying Hopf bifurcation of limit cycles in Lienard systems. As applications, we obtain Hopf cyclicity for some trigonometric Lienard systems, and estimate the maximum number of small limit cycles produced near a nilpotent singular point in some polynomial Lienard systems.