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arXiv 2310.08985math.AP
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时间非局部反应扩散方程的全局行为

Global behavior of nonlocal in time reaction-diffusion equations

Berikbol T. Torebek

AI总结:

研究时间非局部反应扩散方程的Cauchy-Dirichlet问题,获得解的局部与全局存在性、衰减估计和爆破结果,部分回答了Gal-Varma和Luchko-Yamamoto的开放问题。

摘要:

本文考虑时间非局部反应扩散方程的Cauchy-Dirichlet问题:∂_t (k*(u-u_0)) + L_x[u] = f(u),其中x∈Ω⊂R^n,t>0,k∈L^1_loc(R_+),f是局部Lipschitz函数,L_x是线性算子。该模型出现在研究反常和超慢扩散过程时。获得了关于解的局部和全局存在性、衰减估计以及爆破的结果。所得结果为Gal和Varma(2020)以及Luchko和Yamamoto(2016)提出的某些开放问题提供了部分答案。此外,讨论了所得结果可能的拟线性扩展,并提出了一些开放问题。

英文摘要:

The present paper considers the Cauchy-Dirichlet problem for the time-nonlocal reaction-diffusion equation $$\partial_t (k\ast(u-u_0))+\mathcal{L}_x [u]=f(u),\,\,\,\, x\inΩ\subset\mathbb{R}^n, t>0,$$ where $k\in L^1_{loc}(\mathbb{R}_+),$ $f$ is a locally Lipschitz function, $\mathcal{L}_x$ is a linear operator. This model arises when studying the processes of anomalous and ultraslow diffusions. Results regarding the local and global existence, decay estimates, and blow-up of solutions are obtained. The obtained results provide partial answers to some open questions posed by Gal and Varma (2020), as well as Luchko and Yamamoto (2016). Furthermore, possible quasi-linear extensions of the obtained results are discussed, and some open questions are presented.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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