数学物理学报 ›› 2009, Vol. 29 ›› Issue (6): 1613-1622.

• 论文 • 上一篇    下一篇

一类具有收获率和扩散的时滞阶段结构捕食系统的多重正周期解

  

  1. 四川大学 数学学院 成都 610064; |
    广西柳州师范高等专科学校数学与计算机科学系 广西柳州 545004
  • 收稿日期:2007-11-30 修回日期:2008-09-30 出版日期:2009-12-25 发布日期:2009-12-25
  • 基金资助:

    国家自然科学基金(10671133)资助

Multiple Periodic Solutions for a Delayed Stage-Structure Predator-Prey Systems |with Harvesting Rate and Diffusion

  1. Mathematical College, Sichuan University, Chengdu |610064;
    Department of Mathematics and Computer Science, Liuzhou Teachers College, Guangxi Liuzhou 545004
  • Received:2007-11-30 Revised:2008-09-30 Online:2009-12-25 Published:2009-12-25
  • Supported by:

    国家自然科学基金(10671133)资助

摘要:

该文研究了一类具有收获率和扩散的时滞阶段结构捕食系统周期解存在性问题,利用重合度理论中的延拓定理,通过一些分析技巧, 获得了该系统至少存在四个正周期解的充分条件.

关键词: 收获率, 单调功能反应, 扩散, 阶段结构捕食系统, 正周期解, 重合度

Abstract:

In this paper, the author studies the existence of periodic solutions for a delayed stage-structure predator-prey
system with harvesting rate and diffusion. By developing some technique of analysis and using continuation theorem based on coincidence degree, some sufficient conditions are derived, under which this system has at least four positive periodic solutions.

Key words: Harvesting rate, Monotonic functional response, Diffusion, Stage-structure predator-prey system, Positive periodic solution, Coincidence degree

中图分类号: 

  • 34K20