摘要
考虑一类具有时滞的比率依赖型捕食者-食饵系统,利用重合度理论中的延拓定理,得到系统存在正周期解的充分条件.
A periodic ratio-dependent predator-prey system with time delays is investigated. By Using a continuation theorem based on coincidence degree theory, the conditions for the existence of periodic solution of the system are obtained.
出处
《纯粹数学与应用数学》
CSCD
北大核心
2006年第1期111-117,共7页
Pure and Applied Mathematics
关键词
捕食者-食饵系统
时滞
周期解
重合度
predator-prey system, time delay, periodic solution, coincidence degree
