| 变时滞多维Lotka-Volterra竞争差分系统正周期解的存在性 |
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| 引用本文： | 蒋利群. 变时滞多维Lotka-Volterra竞争差分系统正周期解的存在性[J]. 吉首大学学报(自然科学版), 2004, 25(3): 36-39 |
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| 作者姓名： | 蒋利群 |
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| 作者单位： | 吉首大学数学与计算科学系,湖南,吉首,416000;湖南大学数学与计量经济学院,湖南,长沙,410082 |
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| 基金项目： | 教育部留学回国人员科研启动基金资助，湖南省自然科学基金资助项目(02JJY2011) |
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| 摘 要： | 研究了具有变时滞多物种的离散竞争系统，用重合度理论阐述了该系统的正周期解存在的充分条件.
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| 关 键 词： | 竞争系统 正周期解 差分方程 重合度 |
| 文章编号： | 1007-2985(2004)03-0036-04 |
| 修稿时间： | 2004-04-10 |
Existence of Positive Periodic Solutions for Competitive Multi-Species Lotka-Volterra Defference System with Variable Delays |
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| JIANG Li-qun. Existence of Positive Periodic Solutions for Competitive Multi-Species Lotka-Volterra Defference System with Variable Delays[J]. Journal of Jishou University(Natural Science Edition), 2004, 25(3): 36-39 |
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| Authors: | JIANG Li-qun |
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| Affiliation: | Computer Science,Jishou University,Jishou 416000,Hunan China；2.College of Math.and Econometrics,Hunan University,Changsha 410082,Hunan China) |
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| Abstract: | The author considers a periodic competitive multi-species Lotka-Volterra difference system with variable delays.A sufficient condition is obtained about the existence of positive periodic solutions of this system by using the method of coincidence degree. |
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| Keywords: | competitive system positive periodic solutions difference equation coincidence degree |
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