报告人：黄继才（华中师范大学）

报告时间：2026年4月22日（星期三）14:30-16:00

报告地点：科技楼南楼706室

报告摘要：In this talk, we first study the cyclicity of some more degenerate slow-fast cycles. Secondly, we provide a criterion for the existence, stability and upper bounds of relaxation oscillations produced by slow-fast cycles in a class of predator-prey systems. Finally,  we study the cyclicity of sliding cycles for regularized piecewise smooth visible-invisible two-folds. It is based on the joint works with Dr. Renato Huzak,Shigui Ruan and Jinhui Yao.

报告人简介：黄继才，华中师范大学教授，博士生导师。主要从事常微分方程定性理论、分支理论及其应用，几何奇异摄动理论及其应用，非光滑方程及其应用研究。在 JDE、JDDE、SIAP、SIADS、JMB、BMB 等期刊发表学术论文五十余篇。

邀请人：李骥