计算机工程与应用 ›› 2012, Vol. 48 ›› Issue (6): 33-34.

• 研究、探讨 • 上一篇    下一篇

一类基于比率依赖的食物链系统的周期解

庄科俊1,2,温朝晖1,2   

  1. 1.安徽财经大学 统计与应用数学学院,安徽 蚌埠 233030
    2.安徽财经大学 应用数学研究所,安徽 蚌埠 233030
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2012-02-21 发布日期:2012-02-21

Periodic solutions for ratio-dependent food chain system

ZHUANG Kejun1,2, WEN Zhaohui1,2   

  1. 1.School of Statistics and Applied Mathematics, Anhui University of Finance and Economics, Bengbu, Anhui 233030, China
    2.Institute of Applied Mathematics, Anhui University of Finance and Economics, Bengbu, Anhui 233030, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2012-02-21 Published:2012-02-21

摘要: 对一类具有时滞和比率依赖的食物链系统,借助于重合度理论及分析技巧,研究了系统的周期解,得到了存在周期解的充分条件。

关键词: 食物链, 比率依赖, 重合度, 周期解

Abstract: A delayed model of three species food chain with ratio dependence is investigated. By using the coincidence degree theory and analysis techniques, sufficient conditions for existence of periodic solutions are established.

Key words: food chain, ratio-dependent, coincidence degree, periodic solutions