数学物理学报 ›› 1998, Vol. 18 ›› Issue (4): 402-406.

• 论文 • 上一篇    下一篇

周期捕食被捕食系统正周期解存在的充要条件

滕志东1, 陈兰荪2   

  1. 1. 新疆大学数学系 乌鲁木齐 830046;
    2. 中国科学院数学研究所 北京 100080
  • 收稿日期:1996-12-16 修回日期:1997-04-07 出版日期:1998-12-26 发布日期:1998-12-26
  • 基金资助:
    国家自然科学基金资助项目

Necessary and Sufficient Conditions for Existence of Positive Periodic Solutions of Periodic Predator-Prey Systems

Teng Zhidong1, Chen Lansun2   

  1. 1. Department of Mathematics, Xinjiang University, Urumqi 830046;
    2. Institute of Mathematics, Academia Sinica, Beijing 100080
  • Received:1996-12-16 Revised:1997-04-07 Online:1998-12-26 Published:1998-12-26

摘要: 研究周期环境下的Lotka-Volterra捕食被捕食系统.采用分歧理论和微分不等式方法,建立了关于正周期解存在的一个充分必要判别准则,总结和推广了文[1-4]中的主要结果.

关键词: 周期环境, 捕食被捕食系统, 正周期解, 分歧理论

Abstract: In this paper,the periodic Lotka-Volterra predator-prey systems are studied. Applying the method of bifurcation theory and differential inequality principle a necessary and sufficient criterion for existence of positive periodic solutions is established. Main results in[l-4] are summarized and extended.

Key words: Periodic environment, Predator-prey system, Positive periodic solution, Bifurcation theory