摘要
本文利用重合度理论研究了一类具有hollingⅢ类功能反应捕食者食差分方程的正周期解的存在性问题
In this paper, we investigate predator prey model with Holling III functional response governed by difference equations with periodic coefficients. a set of easily verifiable sufficient conditions are derived about the existence of positive periodic solution of system(1.2) by using the method of coincidence degree.
出处
《应用数学》
CSCD
北大核心
2002年第3期25-31,共7页
Mathematica Applicata
基金
SupportedbyNationalNaturalSciencesFoundationofP .R .China(10 1710 10 )
关键词
捕食者食系统
正周期解
差分方程
重合度
Predator prey system
Positive periodic solution
difference equation
Coincidence degree
