数学物理学报

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一类具有多时滞捕食-被捕食系统正周期解的存在性

徐文雄;张太雷;徐宗本   

  1. 西安交通大学理学院 西安 710049; 新疆大学数学与系统科学学院 乌鲁木齐 830046
  • 收稿日期:2006-08-04 修回日期:2007-07-27 出版日期:2008-02-25 发布日期:2008-02-25
  • 通讯作者: 徐文雄
  • 基金资助:
    国家自然科学基金(10371097)和国家自然科学基金重点项目(10531030)资助

Existence of Positive Periodic Solutions of a Prey-Predator

System with Several Delays

Xu Wenxiong; Zhang Tailei; Xu Zongben
  

  1. School of Science, Xi'an Jiaotong University, Xi'an 710049

    College of Mathematics and System Sciences, Xinjiang University, Urumqi 830046

  • Received:2006-08-04 Revised:2007-07-27 Online:2008-02-25 Published:2008-02-25

摘要: 研究一类具有多时滞Holling II型功能性反应非自治捕食-被捕食系统, 利用重合度理论
得到系统全局正周期解存在的充分条件.推广了相关的已有结果.

关键词: 时滞, 非自治捕食-被捕食系统, 正周期解, 重合度

Abstract: A kind of non-autonomous prey-predator system with Holling II
response function and several delays is studied. By the coincidence degree theory, the authors construct a set ofsufficient conditions to prove the existence of global positive periodic solution. Some known results are improved.

Key words: Delay, Non-autonomous Prey-predator system, Positive periodic solution, Coincidence degree

中图分类号: 

  • 92D30