摘要
研究了一个具有密度制约和阶段结构的捕食者-食饵扩散系统正周期解的存在性问题。运用分析技巧获得了一个有界开集,进而由重合度理论中的延拓定理得到至少存在一个周期正解的充分条件。
The existence of positive periodic solutions for a Predator-Prey diffusive system with density restricts stage structure is studied. One bounded open sets are obtained by using the analytic technique. By means of the continuation theorem based on coincidence degree theory, at least the sufficient conditions for one positive periodic solution can be obtained.
出处
《长春工业大学学报》
CAS
2011年第6期609-614,共6页
Journal of Changchun University of Technology
关键词
正周期解
密度制约
阶段结构
重合度
positive periodic solutions
density restricts
stage-structure
coincidence degree.
