摘要
讨论一类具有状态时滞的微分方程正周期解问题,利用锥不动点定理,获得了这类问题正解存在性和多重性的充分条件,推广了[1]的结果.
This paper discusses the positive periodic solutions to a class of differential equation with state-dependent delays by using the fixed-point theorem. From the discussion some sufficient conditions are obtained for the existence and multiplicity of positive periodic solutions. Therefore, the result on[ 1 ] is extended and improved.
出处
《柳州师专学报》
2007年第1期118-123,共6页
Journal of Liuzhou Teachers College
关键词
状态时滞
正周期解
锥不动点定理
存在性
state-dependent delay
positive periodic solution
fixed-point theorem
existence
multi-solutions
