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arXiv 2004.12160math.AP
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一个连接Laplacian算子和分数Laplacian算子的限制性非局部算子

A restricted nonlocal operator bridging together the Laplacian and the Fractional Laplacian

José C. Bellido, Alejandro Ortega

摘要:

在这项工作中,我们引入体积约束问题,涉及非本地操作$(-Δ)_δ^{s}$,密切相关的分数拉普拉斯$(-Δ)^{s}$,并取决于一个参数$δ>0$称为地平线。我们研究了相关的线性和谱问题以及当$δ\to0^+$和$δ\to+\infty$时这些体积约束问题的行为。通过这些$(-Δ)_δ^{s}$上的极限过程,我们得到了谱收敛到局部拉普拉斯算子和分数拉普拉斯算子分别为$δ\to 0^+$和$δ\to +\infty$,以及我们证明了这些问题的解决方案的解决方案的局部狄利克雷问题的解决方案,涉及$(-Δ)$作为$δ\to0^+$或解决方案的非局部分数狄利克雷问题,涉及$(-Δ)^s$作为$δ\to+\infty$。

英文摘要:

In this work we introduce volume constraint problems involving the nonlocal operator $(-Δ)_δ^{s}$, closely related to the fractional Laplacian $(-Δ)^{s}$, and depending upon a parameter $δ>0$ called horizon. We study the associated linear and spectral problems and the behavior of these volume constraint problems when $δ\to0^+$ and $δ\to+\infty$. Through these limit processes on $(-Δ)_δ^{s}$ we derive spectral convergence to the local Laplacian and to the fractional Laplacian as $δ\to 0^+$ and $δ\to +\infty$ respectively, as well as we prove the convergence of solutions of these problems to solutions of a local Dirichlet problem involving $(-Δ)$ as $δ\to0^+$ or to solutions of a nonlocal fractional Dirichlet problem involving $(-Δ)^s$ as $δ\to+\infty$.

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