Bogdanov-Takens Bifurcation of a Delayed Ratio-Dependent Holling-Tanner Predator Prey System

Bogdanov-Takens Bifurcation of a Delayed Ratio-Dependent Holling-Tanner Predator Prey System
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延迟比率依赖的 Holling-Tanner 捕食者猎物系统的 Bogdanov-Takens 分叉

DOI:
10.1155/2013/898015
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发表时间:
2013-10
影响因子:
--
通讯作者:
Wang, Jinling
Wang, Jinling
中科院分区:
--
文献类型:
--
作者:
Liu, Xia;Liu, Yanwei;Wang, Jinling

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利用Faria和Magalhaes提出的延迟泛函微分方程的范式理论,讨论了一类具有避难和恒速率收获的延迟捕食系统。分析结果表明,在某些条件下,系统存在波格丹诺夫- takens奇点。得到了系统在该奇异点处的一般展开。我们的主要结果表明,延迟对系统的动力学行为有重要影响。
A delayed predator prey system with refuge and constant rate harvesting is discussed by applying the normal form theory of retarded functional differential equations introduced by Faria and Magalhaes. The analysis results show that under some conditions the system has a Bogdanov-Takens singularity. A versal unfolding of the system at this singularity is obtained. Our main results illustrate that the delay has an important effect on the dynamical behaviors of the system.
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