数学物理学报

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具有时滞的单种群扩散模型的全局稳定性

桂占吉; 贾敬; 葛渭高   

  1. 海南师范大学数学系, 海口 571158
  • 收稿日期:2005-06-11 修回日期:2006-08-04 出版日期:2007-06-25 发布日期:2007-06-25
  • 通讯作者: 桂占吉
  • 基金资助:
    基金项目:国家自然科学基金(10371006)和海南省自然科学基金(80522)资助

Global Stability of Single-species Diffusion Models with Time Delay

Gui Zhanji; Jia Jing; Ge Weigao   

  1. Department of Mathematics, Hainan Normal University, Haikou 571158
  • Received:2005-06-11 Revised:2006-08-04 Online:2007-06-25 Published:2007-06-25
  • Contact: Gui Zhanji

摘要: 该文研究了一类具有时滞的单种群扩散模型, 利用同伦技术得到了模型存在正平衡点. 在适当的条件下证明了系统是一致持续的, 获得了系统的正平衡点的局部和全局稳定性的充分条件.

关键词: 单种群模型, 扩散, 时滞, 一致持续性, 全局稳定性

Abstract: In this paper, single-species diffusion models with time delays are investigated. It can have a positive equilibrium by homotopy techniques. It is showed that the system is uniformly persistent under appropriate conditions, and sufficient conditions are obtained for local stability and global stability of the equilibrium of the system.

Key words: Single-species models, Diffusion, Time delay, Uniform persistence, Globally stability

中图分类号: 

  • 34C25