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arXiv 2409.10065math.AP
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带Neumann条件的一类非局部演化方程的上半连续性

Upper semicontinuity for a class of nonlocal evolution equations with Neumann condition

Flank D. M. Bezerra, Silvia Sastre-Gomez, Severino H. da Silva

AI总结:

本文研究带Neumann条件的非局部自治演化方程,在适当假设下证明其初值问题的紧全局吸引子关于核J的存在性与上半连续性,丰富了非局部演化方程渐近动力学理论。

摘要:

本文研究$\u211d^N$中有界区域$Ω$上的如下非局部自治演化方程:$\partial_t u(x,t) =- h(x)u(x,t) + g \Big(\int_Ω J(x,y)u(y,t)dy \Big) +f(x,u(x,t))$,其中$h\in W^{1,\infty}(Ω)$,$g:\mathbb{R}\to\mathbb{R}$与$f:\mathbb{R}^N\times\mathbb{R}\to\mathbb{R}$为连续可微函数,$J$为对称核,即对任意$x,y\in\mathbb{R}^N$有$J(x,y)=J(y,x)$。在对$f$和$g$附加适当假设的条件下,我们在合适的相空间中研究了该方程对应初值问题的渐近动力学。更确切地说,我们证明了紧全局吸引子关于核$J$的存在性及上半连续性。

英文摘要:

In this paper we consider the following nonlocal autonomous evolution equation in a bounded domain $Ω$ in $\mathbb{R}^N$ \[ \partial_t u(x,t) =- h(x)u(x,t) + g \Big(\int_Ω J(x,y)u(y,t)dy \Big) +f(x,u(x,t)) \] where $h\in W^{1,\infty}(Ω)$, $g: \mathbb{R} \to \mathbb{R}$ and $f:\mathbb{R}^N\times\mathbb{R} \to \mathbb{R}$ are continuously differentiable function, and $J$ is a symmetric kernel; that is, $J(x,y)=J(y,x)$ for any $x,y\in\mathbb{R}^N$. Under additional suitable assumptions on $f$ and $g$, we study the asymptotic dynamics of the initial value problem associated to this equation in a suitable phase spaces. More precisely, we prove the existence, and upper semicontinuity of compact global attractors with respect to kernel $J$.

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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