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We prove that a continuous potential $q$ can be constructively determined from the knowledge of the Dirichlet-to-Neumann map for the perturbed biharmonic operator $\Delta_g^2+q$ on a conformally transversally anisotropic Riemannian manifold…

偏微分方程分析 · 数学 2021-09-17 Lili Yan

We consider the problem of developing a method to reconstruct a potential $q$ from the partial data Dirichlet-to-Neumann map for the Schr\"odinger equation $(-\Delta_g+q)u=0$ on a fixed admissible manifold $(M,g)$. If the part of the…

偏微分方程分析 · 数学 2015-11-11 Yernat M Assylbekov

We prove that a potential $q$ can be reconstructed from the Dirichlet-to-Neumann map for the Schrodinger operator $-\Delta_g + q$ in a fixed admissible 3-dimensional Riemannian manifold $(M,g)$. We also show that an admissible metric $g$ in…

偏微分方程分析 · 数学 2010-11-04 Carlos E. Kenig , Mikko Salo , Gunther Uhlmann

We consider the inverse problem of recovering a potential from the Dirichlet to Neumann map at a large fixed frequency on certain Riemannian manifolds. We extend the earlier result of [G. Uhlmann and Y. Wang, arXiv:2104.03477] to the case…

偏微分方程分析 · 数学 2023-09-01 Shiqi Ma , Suman Kumar Sahoo , Mikko Salo

Let $(\Omega^3,g)$ be a compact smooth Riemannian manifold with smooth boundary and suppose that $U$ is a an open set in $\Omega$ such that $g|_U$ is the Euclidean metric. Let $\Gamma= \overline{U} \cap \partial \Omega$ be connected and…

偏微分方程分析 · 数学 2018-02-09 Ali Feizmohammadi

In this paper we prove two results. The first shows that the Dirichlet-Neumann map of the operator $\Delta_g+q$ on a Riemannian surface can determine its topological, differential, and metric structure. Earlier work of this type assumes a…

偏微分方程分析 · 数学 2024-06-26 Cătălin I. Cârstea , Tony Liimatainen , Leo Tzou

We show uniqueness results for the anisotropic Calder\'{o}n problem stated on transversally anisotropic manifolds. Moreover, we give a convexity result for the range of Dirichlet-to-Neumann maps on general Riemannian manifolds near the zero…

偏微分方程分析 · 数学 2023-06-13 Cătălin I. Cârstea , Ali Feizmohammadi , Lauri Oksanen

We study inverse boundary problems for magnetic Schr\"odinger operators on a compact Riemannian manifold with boundary of dimension $\ge 3$. In the first part of the paper we are concerned with the case of admissible geometries, i.e.…

偏微分方程分析 · 数学 2018-08-01 Katya Krupchyk , Gunther Uhlmann

We consider Schr\"odinger operators at a fixed high frequency on simply connected compact Riemannian manifolds with non-positive sectional curvatures and smooth strictly convex boundaries. We prove that the Dirichlet-to-Neumann map uniquely…

偏微分方程分析 · 数学 2021-04-09 Gunther Uhlmann , Yiran Wang

We study the inverse boundary problem for a nonlinear magnetic Schr\"odinger operator on a conformally transversally anisotropic Riemannian manifold of dimension $n\ge 3$. Under suitable assumptions on the nonlinearity, we show that the…

偏微分方程分析 · 数学 2023-10-25 Katya Krupchyk , Gunther Uhlmann

We consider the problem of recovering a nonlinear potential function in a nonlinear Schr\"odinger equation on transversally anisotropic manifolds from the linearized Dirichlet-to-Neumann map at a large wavenumber. By calibrating the complex…

偏微分方程分析 · 数学 2023-01-20 Shuai Lu , Jian Zhai

We prove a global uniqueness result for the Calder\'{o}n inverse problem for a general quasilinear isotropic conductivity equation on a bounded open set with smooth boundary in dimension $n\ge 3$. Performing higher order linearizations of…

偏微分方程分析 · 数学 2023-05-10 Cătălin I. Cârstea , Ali Feizmohammadi , Yavar Kian , Katya Krupchyk , Gunther Uhlmann

We prove that uniqueness for the Calder\'on problem on a Riemannian manifold with boundary follows from a hypothetical unique continuation property for the elliptic operator $\Delta+V+(\Lambda^{1}_{t}-q)\otimes (\Lambda^{2}_{t}-q)$ defined…

偏微分方程分析 · 数学 2015-11-06 Jan Cristina

In this article, we study the anisotropic Calder\'on problems for the non local logarithimic Schr\"odinger operators $(-\Delta_g+m)\log{(-\Delta_g+m)}+V$ with $m>1$ on a closed, connected, smooth Riemannian manifold of dimension $n\geq2$.…

偏微分方程分析 · 数学 2025-11-05 Saumyajit Das , Tuhin Ghosh , Susovan Pramanik

Conformally St{\"a}ckel manifolds can be characterized as the class of n-dimensional pseudo-Riemannian manifolds (M, G) on which the Hamilton-Jacobi equation G($\nabla$u, $\nabla$u) = 0 for null geodesics and the Laplace equation --$\Delta$…

偏微分方程分析 · 数学 2019-09-05 Thierry Daudé , Niky Kamran , François Nicoleau

We study an analog of the anisotropic Calder\'on problem for fractional Schr\"odinger operators $(-\Delta_g)^\alpha + V$ with $\alpha \in (0,1)$ on closed Riemannian manifolds of dimensions two and higher. We prove that the knowledge of a…

偏微分方程分析 · 数学 2024-07-25 Ali Feizmohammadi , Katya Krupchyk , Gunther Uhlmann

We prove that the Riemannian metric on a compact manifold of dimension $n\geq 3$ with smooth boundary can be uniquely determined, up to an isometry fixing the boundary, by the Dirichlet-to-Neumann map associated to the Laplace-Beltrami…

偏微分方程分析 · 数学 2024-09-09 Gunther Uhlmann , Jian Zhai

We consider an inverse spectral problem on a quantum graph associated with the square lattice. Assuming that the potentials on the edges are compactly supported and symmetric, we show that the Dirichlet-to-Neumann map for a boundary value…

数学物理 · 物理学 2023-06-26 Dongjie Wu , Chuan-Fu Yang , Natalia Pavlovna Bondarenko

In this article we study the linearized anisotropic Calder\'on problem on a compact Riemannian manifold with boundary. This problem amounts to showing that products of pairs of harmonic functions of the manifold form a complete set. We…

偏微分方程分析 · 数学 2020-09-15 Katya Krupchyk , Tony Liimatainen , Mikko Salo

We prove a sharp regularity threshold for uniqueness in two anisotropic Calder\'on-type inverse problems in dimension $n\ge 3$. The main setting is the Riemannian Schr\"odinger problem with fixed scalar potential: for a prescribed…

偏微分方程分析 · 数学 2026-05-22 Thierry Daudé , Alberto Enciso , Bernard Helffer , Niky Kamran , François Nicoleau
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