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The Calderón problem for variable coefficients nonlocal elliptic operators
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The Calderón problem for variable coefficients nonlocal elliptic operators

Tuhin Ghosh, Yi-Hsuan Lin and Jingni Xiao
02 Aug 2017
url
https://doi.org/10.48550/arXiv.1708.00654View
Preprint (Author's original) Open arXiv.org - Non-exclusive license to distribute

Abstract

Mathematics - Analysis of PDEs
In this paper, we introduce an inverse problem of a Schr\"odinger type variable nonlocal elliptic operator $(-\nabla\cdot(A(x)\nabla))^{s}+q)$, for $0<s<1$. We determine the unknown bounded potential $q$ from the exterior partial measurements associated with the nonlocal Dirichlet-to-Neumann map for any dimension $n\geq2$. Our results generalize the recent initiative [16] of introducing and solving inverse problem for fractional Schr\"odinger operator $((-\Delta)^{s}+q)$ for $0<s<1$. We also prove some regularity results of the direct problem corresponding to the variable coefficients fractional differential operator and the associated degenerate elliptic operator.

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