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Complex Dynamics of a Discrete-Time Predator-Prey System with Ivlev Functional Response

机译:具有Ivlev功能响应的离散捕食-被捕食系统的复杂动力学

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摘要

The dynamics of a discrete-time predator-prey system with Ivlev functional response is investigated in this paper. The conditions of existence for flip bifurcation and Hopf bifurcation in the interior of R-+(2) are derived by using the center manifold theorem and bifurcation theory. Numerical simulations are presented not only to substantiate our theoretical results but also to illustrate the complex dynamical behaviors of the system such as attracting invariant circles, periodic-doubling bifurcation leading to chaos, and periodic-halving phenomena. In addition, the maximum Lyapunov exponents are numerically calculated to confirm the dynamical complexity of the system. Finally, we compare the system to discrete systems with Holling-type functional response with respect to dynamical behaviors.
机译:研究了具有Ivlev功能响应的离散时间捕食者-食饵系统的动力学。利用中心流形定理和分叉理论推导了R-+(2)内部的翻转分叉和Hopf分叉的存在条件。进行数值模拟不仅可以证实我们的理论结果,而且可以说明系统的复杂动力学行为,例如吸引不变的圆,导致混沌的周期性倍增分叉和周期性减半现象。另外,通过数值计算最大的李雅普诺夫指数以确认系统的动力学复杂性。最后,我们将系统与具有动态行为的Holling型功能响应的离散系统进行比较。

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  • 来源
    《Mathematical Problems in Engineering》 |2018年第2期|8635937.1-8635937.15|共15页
  • 作者

    Baek Hunki;

  • 作者单位

    Catholic Univ Daegu, Dept Math Educ, Gyongsan 712702, Gyeongbuk, South Korea;

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  • 正文语种 eng
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