摘要
应用拓扑度的方法,在限制条件较少的情况下,讨论了一个三阶非线性微分方程周期解的存在性.
In this paper,by using the method of topologlcal degree, the existence of periodic solutions for some non-linear third order differential equation is discussed under weaker condition.Two sufficient conditions are obtained.
出处
《广西师范大学学报(自然科学版)》
CAS
1994年第3期17-20,共4页
Journal of Guangxi Normal University:Natural Science Edition
关键词
周期解
非线性
微分方程
存在性
non-linear equations
topological degree
periodic solution