中文

弱奇异灵敏性和Logistic动力学下的抛物-椭圆型化学趋化系统解的长期行为:有界性、持久性、稳定性

偏微分方程分析 2025-11-11 v2 动力系统

摘要

本文讨论了具有弱奇异灵敏性和Logistic来源的抛物-椭圆型化学趋化竞争系统的正解的长期行为:\n\n\begin{equation} \label{abstract-eq} \begin{cases} u_t=\Delta u-\chi \nabla\cdot (\frac{u}{v^{\lambda}} \nabla v) +ru- \mu u^2, \quad &x\in \Omega,\cr 0=\Delta v- \alpha v +\beta u,\quad &x\in \Omega, \cr \frac{\partial u}{\partial \nu}=\frac{\partial v}{\partial \nu}=0,\quad &x\in\partial\Omega, \end{cases}\, \end{cases}\n\n其中,ΩRN(N2)\Omega \subset \mathbb{R}^N (N \ge 2) 为光滑有界域,参数χ,r,μ,α,β\chi,\, r, \, \mu, \, \alpha,\,\beta 为正常数,λ(0,1).\lambda \in (0,1). 在本文中,对于所有足够光滑的初始数据 u0C0(Ωˉ)u_0\in C^0(\bar\Omega)u0≢0,u_0 \not \equiv 0, 已证明:首先,在μ>μ1(p,λ,χ,β)\mu > \mu_1^*(p,\lambda,\chi,\beta) 时,任何全局定义的正解在 Lp(Ω)L^p(\Omega) 中有界,其中 p2.p \ge 2. 接着,在μ>μ2(N,λ,χ,β)\mu > \mu_2^*(N,\lambda,\chi,\beta) 时,任何全局定义的经典解全局有界。第三,在μ>μ3(N,λ,χ,β)\mu > \mu_3^*(N,\lambda,\chi,\beta) 时,任何全局定义的正解最终在由与初始函数 u0u_0 无关的正数常数上均有界。最后,在μ>μ4(N,λ,χ,α,β,r,Ω)\mu > \mu_4^*(N,\lambda,\chi,\alpha,\beta,r,\Omega) 时,任何全局有界的经典解对系统 (0.1) 指数收敛于常数稳态 (rμ,βαrμ).(\frac{r}{\mu},\frac{\beta}{\alpha}\frac{r}{\mu}).

关键词

引用

@article{arxiv.2411.15852,
  title  = {Large time behavior of solution to a parabolic-elliptic chemotaxis system with weak singular sensitivity and logistic kinetics: Boundedness, persistence, stability},
  author = {Halil ibrahim Kurt},
  journal= {arXiv preprint arXiv:2411.15852},
  year   = {2025}
}

备注

There are significant errors in the proof of Theorem 1.1, which affect all the subsequent results. Unfortunately, these errors cannot be corrected. Therefore, it should be withdrawn from the system