数学物理学报 ›› 1998, Vol. 18 ›› Issue (1): 70-77.

• 论文 • 上一篇    下一篇

一类三维生态动力系统的Hopf分支

吴云华, 袁晓凤, 刘世泽   

  1. 中国科学院成都计算所数理室 成都 610041
  • 收稿日期:1996-05-13 修回日期:1996-12-17 出版日期:1998-03-26 发布日期:1998-03-26

Hopf Bifurcation in the Third-Dimensional Ecologic Dynamical System

Wu yunhua, Yuan xiaofeng, Liu shize   

  1. Ceder for Mathematical Sciences Chengdu Institute of Computer Application, Academia Sinica 610041
  • Received:1996-05-13 Revised:1996-12-17 Online:1998-03-26 Published:1998-03-26

摘要: 考虑一类具偏食习惯的捕食者与被捕食者模型.利用中心流形定理和Hopf分支理论讨论并证明了该系统在一定条件下产生Hopf分支,得到中心流形、小振幅空间周期解的渐近表达式,同时给出了周期解稳定性判据.

关键词: 中心流形, Hopf分支, 周期解

Abstract: A class of ecology models in predator-prey systems is considered. The bifurcation phenomena are discussed by using Hopf bifurcation and Center manifold theorems. Hopf bifurcation can occur in some values of parameters. The asymptotic formulas fot the center manifold and the periodic solution with small amplitude have been given. The stable criterion of the periodic solution has also been obtained.

Key words: Center manifold, Hopf bifurcation, Periodic solution