J4 ›› 2011, Vol. 49 ›› Issue (02): 195-202.

• 数学 • 上一篇    下一篇

具HollingⅡ类功能反应及捕获的三种群L-V系统多

姜玉秋1, 魏凤英2   

  1. 1. 吉林师范大学 |数学学院, 吉林 四平 136000; 2. 福州大学 数学与计算机科学学院, 福州 350108
  • 收稿日期:2010-07-19 出版日期:2011-03-26 发布日期:2011-06-14
  • 通讯作者: 魏凤英 E-mail:weifengying76@yahoo.com.cn

Existence of Multiple Positive Periodic Solutions for ThreeSpecies L-V System with Holling Ⅱ Type Functional Response and Harvesting Terms

JIANG Yuqiu1, WEI Fengying2   

  1. 1. College of Mathematics, Jilin Normal University, Siping 136000, Jilin Province, China;2. College of Mathematics and Computer Science, Fuzhou University, Fuzhou 350108, China
  • Received:2010-07-19 Online:2011-03-26 Published:2011-06-14
  • Contact: WEI Fengying E-mail:weifengying76@yahoo.com.cn

摘要:

运用比较定理及重合度理论, 研究一类具有Holling Ⅱ类功能反应及捕获的三种群L-V系统多个周期解的存在性. 结果表明, 在适当的条件下, 该系统至少存在8个不同的正周期解. 并通过具体实例证明了所得结论的有效性.

关键词: 正周期解, L-V系统, 重合度, Holling Ⅱ类功能反应, 捕获

Abstract:

The existence of multiple positive periodic solutions for threespecies L-V system with harvesting terms and Holling Ⅱ type functional response was studied via coincidence degree theory and comparison theorem, at least eight positive periodic solutions for L-V system were obtained. Aconcrete example was given to illustrate the effectiveness of our results.

Key words: positive periodic solutions, L-V system, coincidence degree, Holling Ⅱ type functional response, harvesting

中图分类号: 

  • O175.12