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.
In this paper, a kind of high order functional differential equation is considered. By using the theory of coincidence degree, a sufficient condition of existence of at least one 2π-periodic solution is obtained.
出处
《纯粹数学与应用数学》
CSCD
北大核心
2008年第1期88-90,204,共4页
Pure and Applied Mathematics
关键词
泛函微分方程
周期解
重合度
functional differential equation
2π-periodic solution. Coincidence Degree
