中文

带有收获项的 Nicholson 时滞模型中的异宿连接

动力系统 2025-05-20 v1

摘要

本文证明了带有收获项的时滞 Nicholson 绿头苍蝇模型:x(t)=δx(t)Hx(tσ)+ρx(tr)ex(tr) x'(t) = -\delta x(t) - Hx(t-\sigma) + \rho x(t-r)e^{-x(t-r)} 的单调异宿解的存在性。在条件 1<ρδ+He1 < \dfrac{\rho}{\delta+H} \leq e 下,我们利用适用于两个时滞(σr\sigma \neq r)的 Wu 和 Zou 单调迭代方法,建立了平衡点 00ln(ρ/(δ+H))\ln(\rho/(\delta+H)) 之间的连接。该证明结合了显式上下解的构造与特征方程分析,并辅以数值模拟。

关键词

引用

@article{arxiv.2505.11657,
  title  = {Heteroclinic Connection in a Nicholson's delayed model with Harvesting term},
  author = {Adrian Gomez and Cesar Guayasamin},
  journal= {arXiv preprint arXiv:2505.11657},
  year   = {2025}
}

备注

25 pages, 5 figures. Submitted to Journal of Mathematical Biology. Contains numerical simulations of heteroclinic solutions for a Nicholson's model with two delays (sigma not equal to r ) and harvesting term