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Applied Mathematics and Mechanics (English Edition) ›› 1999, Vol. 20 ›› Issue (5): 579-584.

• 论文 • 上一篇    

POSITIVE PERIODIC SOLUTION OF A NEUTRAL PREDATOR-PREY S YSTEM

李永昆   

  1. Department of Mathematics, Yunnan University, Kunming 650091, P.R.China
  • 收稿日期:1997-02-17 出版日期:1999-05-18 发布日期:1999-05-18
  • 通讯作者: Liu Zengrong
  • 基金资助:
    Project supported by the ABF of Yunnan Province

POSITIVE PERIODIC SOLUTION OF A NEUTRAL PREDATOR-PREY S YSTEM

Li Yongkun   

  1. Department of Mathematics, Yunnan University, Kunming 650091, P.R.China
  • Received:1997-02-17 Online:1999-05-18 Published:1999-05-18
  • Supported by:
    Project supported by the ABF of Yunnan Province

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摘要： In this paper, the existence o f a positive periodic solution to the following neutral predator-prey system is studied,in which r,a2,K and τ are positive constants, and a1(t),α(t),b(t) and β(t) are positive continuous functions of period ω.

关键词: neutral delay system, predator -prey system, positive periodic solution, topological degree

Abstract: In this paper, the existence o f a positive periodic solution to the following neutral predator-prey system is studied,in which r,a2,K and τ are positive constants, and a1(t),α(t),b(t) and β(t) are positive continuous functions of period ω.

Key words: neutral delay system, predator -prey system, positive periodic solution, topological degree

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