摘要
研究具有时滞、Holling-类功能反应和脉冲效应的捕食-食饵系统正周期解的存在性.利用Mawhin重合度理论和同伦性质,获得周期解存在的充分条件.结果推广和改进一些最近文献结论.
A class model of impulsive predator-prey system with variable delays and Holing-Ⅱ functional response is considered. By using the continuation theorem of coincidence degree theory and homotopy invariance property, some ufficient conditions ensuring the existence of positive periodic solutions of the system are obtained. The resultimprove and extend some recent works.
出处
《数学的实践与认识》
CSCD
北大核心
2009年第11期109-115,共7页
Mathematics in Practice and Theory
基金
四川省教育厅科研项目(2006B071)
关键词
脉冲
时滞
功能反应
捕食系统
周期解
impulses
delays
boiling functional response
periodic solution
predator prey system
