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We investigate a generalization of Calder\'on's problem of recovering the conductivity coefficient in a conductivity equation from boundary measurements. As a model equation we consider the p-conductivity equation with p strictly between…

偏微分方程分析 · 数学 2019-01-23 Tommi Brander

We study an inverse boundary value problem associated with $p$-Laplacian which is further perturbed by a linear second order term, defined on a bounded set $\Omega$ in $\R^n, n\geq 2$. We recover the coefficients at the boundary from the…

偏微分方程分析 · 数学 2024-01-12 Nitesh Kumar , Tanmay Sarkar , Manmohan Vashisth

We study an inverse problem for nonlinear elliptic equations modelled after the p-Laplacian. It is proved that the boundary values of a conductivity coefficient are uniquely determined from boundary measurements given by a nonlinear…

偏微分方程分析 · 数学 2011-06-22 Mikko Salo , Xiao Zhong

This work tackles an inverse boundary value problem for a $p$-Laplace type partial differential equation parametrized by a smoothening parameter $\tau \geq 0$. The aim is to numerically test reconstructing a conductivity type coefficient in…

数值分析 · 数学 2018-03-29 Antti Hannukainen , Nuutti Hyvönen , Lauri Mustonen

We consider one-dimensional Calder\'on's problem for the variable exponent $p(\cdot)$-Laplace equation and find out that more can be seen than in the constant exponent case. The problem is to recover an unknown weight (conductivity) in the…

偏微分方程分析 · 数学 2019-07-12 Tommi Brander , David Winterrose

In this note, we study Calder\'on's problem for certain classes of conductivities in domains with circular symmetry in two and three dimensions. Explicit formulas are obtained for the reconstruction of the conductivity from the…

偏微分方程分析 · 数学 2019-03-19 Mai Thi Kim Dung , Dang Anh Tuan

We consider the so called Calder\'on problem which corresponds to the determination of a conductivity appearing in an elliptic equation from boundary measurements. Using several known results we propose a simplified and self contained proof…

偏微分方程分析 · 数学 2019-09-20 Yavar Kian

We consider the inverse problem of recovering an isotropic quasilinear conductivity from the Dirichlet-to-Neumann map when the conductivity depends on the solution and its gradient. We show that the conductivity can be recovered on an open…

偏微分方程分析 · 数学 2019-10-18 Ravi Shankar

We describe a method to reconstruct the conductivity and its normal derivative at the boundary from the knowledge of the potential and current measured at the boundary. This boundary determination implies the uniqueness of the conductivity…

偏微分方程分析 · 数学 2021-03-09 Felipe Ponce-Vanegas

We revisit the stability issue of determining the conductivity at the boundary from the corresponding Dirichlet-to-Neumann map. We discuss both the method based on singular solutions and the one built on the localized oscillating solutions.…

偏微分方程分析 · 数学 2021-12-30 Mourad Choulli

We determine the conductivity of the interior of a body using electrical measurements on its surface. We assume only that the conductivity is bounded below by a positive constant and that the conductivity and surface are Lipschitz…

偏微分方程分析 · 数学 2025-07-30 Pedro Caro , María Ángeles García-Ferrero , Keith M. Rogers

We extend a global uniqueness result for the Calder\'on problem with partial data, due to Kenig-Sj\"ostrand-Uhlmann, to the case of less regular conductivities. Specifically, we show that in dimensions $n\ge 3$, the knowledge of the…

偏微分方程分析 · 数学 2016-06-22 Katya Krupchyk , Gunther Uhlmann

A generalized variant of the Calder\'on problem from electrical impedance tomography with partial data for anisotropic Lipschitz conductivities is considered in an arbitrary space dimension $n \geq 2$. The following two results are shown:…

谱理论 · 数学 2012-05-22 Jussi Behrndt , Jonathan Rohleder

We recover the conductivity $\sigma$ at the boundary of a domain from a combination of interior and boundary data, with a single quite arbitrary measurement, in AET or CDII. The argument is elementary and local. More generally, we consider…

数值分析 · 数学 2019-04-02 Tommi Brander , Torbjørn Ringholm

We consider the inverse Calder\'on problem consisting of determining the conductivity inside a medium by electrical measurements on its surface. Ideally, these measurements determine the Dirichlet-to-Neumann map and, therefore, one usually…

偏微分方程分析 · 数学 2017-06-28 Pedro Caro , Andoni Garcia

We show in two dimensions that measuring Dirichlet data for the conductivity equation on an open subset of the boundary and, roughly speaking, Neumann data in slightly larger set than the complement uniquely determines the conductivity on a…

偏微分方程分析 · 数学 2008-09-19 Oleg Yu. Imanuvilov , Gunther Uhlmann , masahiro Yamamoto

We detect an inclusion with infinite conductivity from boundary measurements represented by the Dirichlet-to-Neumann map for the conductivity equation. We use both the enclosure method and the probe method. We use the enclosure method to…

偏微分方程分析 · 数学 2019-01-23 Tommi Brander , Joonas Ilmavirta , Manas Kar

In this paper, following Nachman's idea and Haberman and Tataru's idea, we reconstruct $C^1$ conductivity $\gamma$ or Lipchitz conductivity $\gamma$ with small enough value of $|\nabla log\gamma|$ in a Lipschitz domain $\Omega$ from the…

偏微分方程分析 · 数学 2013-04-09 Andoni García , Guo Zhang

This short note modifies a reconstruction method by the author (Comm. PDE, 45(9):1118-1133, 2020), for reconstructing piecewise constant conductivities in the Calder\'on problem (electrical impedance tomography). In the former paper, a…

偏微分方程分析 · 数学 2025-12-08 Henrik Garde

We consider the Calder\'on problem with partial data in certain admissible geometries, that is, on compact Riemannian manifolds with boundary which are conformally embedded in a product of the Euclidean line and a simple manifold. We show…

偏微分方程分析 · 数学 2016-02-16 Casey Rodriguez
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