在一个离散的罗森茨瓦伊格-马卡瑟猎物-掠食者模型中的分叉和混乱控制
A Q Khan1, A Maqbool1, Turki D Alharbi2
1Department of Mathematics, University of Azad Jammu and Kashmir, Muzaffarabad 13100, Pakistan.
Chaos (Woodbury, N.Y.)
|March 6, 2024
概括
这项研究分析了一个离散的猎物-掠食者模型,揭示了正平衡处的翻转和Neimark-Sacker分叉. 混沌是通过反控制来研究的,理论发现的数值验证.
科学领域:
- 数学生态学数学生态学
- 动态系统理论 动态系统理论
- 计算生物学 计算生物学
背景情况:
- 猎物-掠食者模型在生态学中对于理解人口动态至关重要.
- 离散模型提供了对人口波动和在连续模型中未见的复杂行为的洞察.
- 罗森茨瓦伊格-麦克阿瑟模型是捕食者-猎物相互作用的经典框架.
研究的目的:
- 研究一个离散的罗森茨瓦伊格-麦克阿瑟猎物-掠食者模型的局部动态,混乱和分叉.
- 分析模型在各种平衡解决方案中的行为.
- 识别条件下出现复杂的动态,包括混乱.
主要方法:
- 在平衡点对局部动态特征的分析.
- 两叉理论的应用,包括中心多样数定理,以研究二叉.
- 利用反控制方法来研究混乱的动态.
- 数字模拟以证实理论结果.
主要成果:
- 离散模型在正平衡解决方案中表现出翻转和尼马克-萨克分叉.
- 在半微不足道和微不足道的平衡解决方案中没有翻转分叉.
- 在正平衡的情况下,折叠分叉不会发生.
- 混沌被成功调查并通过数值分析得到证实.
结论:
- 离散的罗森茨瓦伊格-麦克阿瑟模型展示了丰富的动态行为,包括分叉和混乱.
- 具体的分叉取决于平衡溶液的类型和参数值.
- 这些发现有助于通过离散动态来理解生态模型的复杂性.
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