Permanence and almost periodic solutions for a single-species system with impulsive effects on time scales

Permanence and almost periodic solutions for a single-species system with impulsive effects on time scales
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对时间尺度具有脉冲效应的单物种系统的持久解和几乎周期性解

DOI:
10.22436/jnsa.009.03.30
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发表时间:
2015-08
影响因子:
--
通讯作者:
Bing Li
Bing Li
中科院分区:
--
文献类型:
--
作者:
Yongkun Li;Pan Wang;Bing Li

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本文首先提出了一个时标上具有脉冲效应的单种群系统,通过建立时标上脉冲动力方程的一些新的比较定理,得到了保证该系统持续生存的充分条件.然后证明了时标上脉冲动力方程的一个Massera型定理,并在此基础上建立了系统唯一正概周期解的存在性和一致渐近稳定性的判据.最后,我们给出一个例子来说明我们的主要结果的可行性。我们的例子还表明,连续时间系统和其相应的离散时间系统具有相同的动力学。本文的结果是全新的。
In this paper, we first propose a single-species system with impulsive effects on time scales and by establishing some new comparison theorems of impulsive dynamic equations on time scales, we obtain sufficient conditions to guarantee the permanence of the system. Then we prove a Massera type theorem for impulsive dynamic equations on time scales and based on this theorem, we establish a criterion for the existence and uniformly asymptotic stability of unique positive almost periodic solution of the system. Finally, we give an example to show the feasibility of our main results. Our example also shows that the continuous time system and its corresponding discrete time system have the same dynamics. Our results of this paper are completely new.
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