摘要
研究了具有脉冲效应的非自治捕食系统,该系统是两个具有互惠关系的食饵种群被一个捕食种群捕食.利用重合度理论证明系统正周期解的存在性.
The nonautonomous predator-prey sustem with inpulsive effect and two cooperative prey predated by one predator is studied. The existence of the strictly positive periodic solution of the system is proved by using coincidence degree.
出处
《数学的实践与认识》
CSCD
北大核心
2007年第20期141-149,共9页
Mathematics in Practice and Theory
基金
山西青年科技研究基金项目(20021004)
关键词
捕食系统
脉冲
正周期解
重合度
predator-prey system, Impulsive
periodic solution
coincidence degree
