数学物理学报 ›› 1997, Vol. 17 ›› Issue (S1): 66-69.

• 论文 • 上一篇    下一篇

周期时滞Logistic方程的全局吸引性

李永昆   

  1. 云南大学数学系 昆明 650091
  • 收稿日期:1995-11-24 修回日期:1996-06-10 出版日期:1997-12-26 发布日期:1997-12-26
  • 基金资助:
    云南省应用基础研究基金

Global Attractivity in a Periodic Delay-Logistic Equation

Li Yongkun   

  1. Department of Mathematics, Yunnun University, Kunming 650091
  • Received:1995-11-24 Revised:1996-06-10 Online:1997-12-26 Published:1997-12-26

摘要: 该文建立了周期时滞Logistic方程N'(t)=r(t)N(t)[1-N(t-τ)/k(t)]的正周期解的存在性,并获得了正周期解的唯一性和全局吸引性的充分条件.所得结果推广和改进了[1]的结果.

关键词: 时滞Logistic方程, 周期解, 全局吸引性, 振动, 非振动

Abstract: In this paper,we establish the existence of a positive periodic solution for#br#N'(t)=r(t)N(t)[1-N(t-τ)/k(t)],#br#and we obtain sufficient conditions for uniqueness and global attractivity of the positive periodic solution. Our results extend and improve the correspond ones in[1].

Key words: Delay-Logistic equation, periodic solution, global attractivity, oscillation, nonoscillation