摘要
利用重合度理论中的延拓定理,获得了一类具有收获率和单调功能性反应的离散捕食系至少存在2个正周期解的充分条件.
By using a continuation theorem based on coincidence degree theory, sufficient conditions are obtained for the existence of at least two positive periodic solution for a class of discreted predator-prey system with harvesting and monotonic functional response.
出处
《西南师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2010年第2期86-91,共6页
Journal of Southwest China Normal University(Natural Science Edition)
基金
国家自然科学基金资助项目(10671133)
关键词
收获率
单调功能反应
离散
多重正周期解
重合度
harvesting
monotonic functional response
discrete
multiple positive periodic solutions
coincidence degree
