Title: Restricted independence in displacement function for estimating cyclicity

Keynote Speaker: Chen Xingwu

Abstract:

Since the independence of focal values is a sufficient condition to give a number of limit cycles arising from a center-focus equilibrium, in this paper we consider a restricted independence to a parametric curve, which gives a method not only to increase the lower bound for the cyclicity of the center-focus equilibrium but also to be available when those focal values are not independent.

Introduction to the Speaker:

Chen Xingwu, received a doctorate in science from Sichuan University in 2007, is now a professor and doctoral supervisor of Sichuan University and a commentator of Mathematical Reviews of American Mathematical Society. He mainly studies the qualitative theory of differential equations and bifurcation theory and application. He has published multiple academic papers in international journals such as Journal of Differential Equations, Continuous and Discrete Dynamical Systems and the UK Nonlinear. He once presided over a number of projects of National Natural Science Foundation Program of China and intergovernmental cooperation and exchange under the Ministry of Science and Technology, and was invited to domestic and international universities for exchange visit, including University of Minnesota System, Universitat Autònoma de Barcelona, University of Silesia.

Inviter:

Si Wen

Time:

14:00-15:00 on September 17 (Thursday)

Location:

Tencent Conference, Conference ID: 874 946 018

Sponsored by: School of Mathematics, Shandong University