摘要
使用Mawhin重合度理论的连续性定理和拓扑度理论,对脉冲条件下具周期时滞的竞争模型进行研究,得到了该模型周期正解存在的充分必要条件.
Using the continuation theorem of coincidence degree theory proposed by Mawhin and topoiogical degree, theory to study the periodic solutions of a competition model governed by impulsive differential equations with periodic delays and sufficient and necessary condition of existence of positive periodic solution for the system is obtained.
出处
《昆明师范高等专科学校学报》
2006年第4期62-67,共6页
Journal of Kunming Teachers College
关键词
周期正解
重合度定理
竞争模型
脉冲方程
Periodic solution
Coincidence degree theory
Competition model
Impulsive equations.