| 一类具有Beddington-DeAngelis功能反应的离散三种群食物链系统正周期解的存在性 |
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| 引用本文： | 吴丽萍.一类具有Beddington-DeAngelis功能反应的离散三种群食物链系统正周期解的存在性[J].福州大学学报(自然科学版),2008,36(2):162-168. |
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| 作者姓名： | 吴丽萍 |
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| 作者单位： | 闽江学院数学系,福建,福州,350108 |
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| 基金项目： | 福建省高等学校新世纪人才支持计划 |
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| 摘 要： | 利用重合度理论中的延拓定理讨论了具有Beddington-DeAngelis功能反应的离散三种群食物链系统正周期解的存在性问题,得到了保证正周期解存在的充分条件.
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| 关 键 词： | Beddington-DeAngelis功能性反应 离散 捕食者-食饵系统 周期解 重合度 |
| 文章编号： | 1000-2243(2008)02-0162-07 |
| 修稿时间： | 2007年5月25日 |
Existence of positive periodic solution for a discrete three-species food-chain system with Beddington-DeAngelis functional response |
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| WU Li-ping.Existence of positive periodic solution for a discrete three-species food-chain system with Beddington-DeAngelis functional response[J].Journal of Fuzhou University(Natural Science Edition),2008,36(2):162-168. |
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| Authors: | WU Li-ping |
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| Institution: | WU Li-ping(Department of Mathematics,Minjiang University,Fuzhou,Fujian 350108,China) |
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| Abstract: | By using a continuation theorem based on coincidence degree theory,the existence of positive periodic solution of a discrete three-species food-chain system with Beddington-DeAngelis functional response is studied,a set of easily verifiable sufficient conditions are obtained. |
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| Keywords: | Beddington-DeAngelis functional response discrete predator-prey system periodic solution coincidence degree |
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