摘要
考虑一类高阶泛函微分方程,利用重合度理论,获得了此方程至少存在一个2π周期解的充分条件.
A kind of high order functional differential equation is considered. By using the theory of concidence degree, a sufficient condition of existence of at least one 2π-periodic solution is obtained.
出处
《数学的实践与认识》
CSCD
北大核心
2008年第6期192-195,共4页
Mathematics in Practice and Theory
关键词
泛函微分方程
周期解
重合度
functional differential equation
2π-periodic solution
Coincidence Degree
