摘要
应用Krasnoselskii锥映射不动点定理,研究了具一般时滞非线性非自治Logistic方程的ω-周期解的存在性,获得了存在正周期解的充分条件.
In this paper,by using the Krasovskii's cone fixed point theorem,we obtain sufficient conditions for the existence of positive periodic solutions for general delayed nonlinear nonautonomous logistic equation.
出处
《纯粹数学与应用数学》
CSCD
2003年第3期268-273,共6页
Pure and Applied Mathematics
关键词
时滞微分方程
锥映射不动点定理
正ω-周期解
delay differential equation,cone fixed point theorem,positive periodic solution