报告题目：The study of bifurcation of limit cycles from the period annulus of some planar differential systems

报告时间：2025年12月2日（周二）10:00-11:00

报告地点：腾讯会议 439-933-490

主办单位：数学科学学院

报告摘要：In this talk, we will first focus on some new results on the bifurcation of limit cycles from a class of cubic Hamilton systems with many period annuluses, and then introduce some development on the bounds for the maximum number of limit cycles $Z(3,n)$ that the Hamilton system with $H^{\pm }(x,y) = x^2+y^2 $  separated by the curve $y = x^3$, or $x^2$ ,  under perturbation of arbitrary polynomials of $x, y$ with degree $n$ can have, where $n\in \mathbb{N}$.

主讲人简介：赵丽琴，北京师范大学教授, 博士生导师。长期从事向量场分支理论的研究, 主持并完成多项国家自然科学基金，多年关注Hilbert第16问题和弱化Hilbert第16问题。 在JDE，BSM，NA，DCDS-B,  JMAA, QTD, SCIENCE CHINA Mathematics 等国内外杂志上发表论文60多篇。