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We establish both Lipschitz and logarithmic stability estimates for an inverse flux problem and subsequently apply these results to an inverse boundary coefficient problem. Furthermore, we demonstrate how the stability inequalities derived…

偏微分方程分析 · 数学 2025-11-14 Mourad Choulli , Shuai Lu , Hiroshi Takase

We consider the inverse problem of determining an electromagnetic potential appearing in an infinite cylindrical domain from boundary measurements. More precisely, we prove the stable recovery of some general class of magnetic field and…

偏微分方程分析 · 数学 2021-11-24 Yavar Kian , Yosra Soussi

We derive nonlinear stability results for numerical integrators on Riemannian manifolds, by imposing conditions on the ODE vector field and the step size that makes the numerical solution non-expansive whenever the exact solution is…

数值分析 · 数学 2026-02-10 Marta Ghirardelli , Brynjulf Owren , Elena Celledoni

We are concerned with the Calder\'on problem of determining an unknown conductivity of a body from the associated boundary measurement. We establish a logarithmic type stability estimate in terms of the Hausdorff distance in determining the…

偏微分方程分析 · 数学 2019-02-13 Hongyu Liu , Chun-Hsiang Tsou

We consider the stability in the inverse problem consisting of the determination of a time-dependent coefficient of order zero $q$, appearing in a Dirichlet initial-boundary value problem for a wave equation $\partial_t^2u-\Delta…

偏微分方程分析 · 数学 2016-02-01 Yavar Kian

We are concerned with the problem of determining the nonlinear term in a semilinear elliptic equation by boundary measurements. Precisely, we improve [5, Theorem 1.3], where a logarithmic type stability estimate was proved. We show actually…

偏微分方程分析 · 数学 2023-06-13 Mourad Choulli

Let $(M,g_0)$ be a closed oriented $n$-manifold that is locally isometric to a product $(X^{n_1}_1,g_1)\times\cdots (X_k^{n_k},g_k)$, where each $n_i\ge 3,$ and each factor $(X_i^{n_i},g_i)$ is a negatively curved symmetric space. We study…

微分几何 · 数学 2024-10-16 Hyun Chul Jang

We study boundary regularity of maps from two-dimensional domains into manifolds which are critical with respect to a generic conformally invariant variational functional and which, at the boundary, enter perpendicularly into a support…

偏微分方程分析 · 数学 2018-02-12 Armin Schikorra

Inverse nodal problem on diffusion operator is the problem of finding the potential functions and parameters in the boundary conditions by using nodal data. In particular, we solve the reconstruction and stability problems using nodal set…

谱理论 · 数学 2013-02-19 Emrah Yilmaz , Hikmet Kemaloglu

We study a generalized boundary rigidity problem, which investigates whether the areas of embedded minimal surfaces can uniquely determine a Riemannian manifold with boundary. We prove that for a conformal perturbation of an analytic metric…

偏微分方程分析 · 数学 2025-10-28 Leonard Busch , Tony Liimatainen , Mikko Salo , Leo Tzou

The stability of a spherically symmetric self-gravitating magnetic monopole is examined in the thin wall approximation: modeling the interior false vacuum as a region of de Sitter space; the exterior as an asymptotically flat region of the…

广义相对论与量子宇宙学 · 物理学 2009-10-31 Guillermo Arreaga , Inyong Cho , Jemal Guven

Let $(M,g_0)$ be a closed oriented hyperbolic manifold of dimension at least $3$. By the volume entropy inequality of G. Besson, G. Courtois and S. Gallot, for any Riemannian metric $g$ on $M$ with same volume as $g_0$, its volume entropy…

微分几何 · 数学 2025-08-29 Antoine Song

In this paper, we investigate the stability of the linear wave equation where one part of the boundary, which is seen as a lower-dimensional Riemannian manifold, is governed by a coupled wave equation, while the other part is subject to a…

偏微分方程分析 · 数学 2022-09-23 Nicolas Vanspranghe

We prove H\"older type stability estimates near generic simple Riemannian metrics for the inverse problem of recovering such metrics from the Dirichlet-to-Neumann map associated to the wave equation for the Laplace-Beltrami operator.

偏微分方程分析 · 数学 2007-05-23 Plamen Stefanov , Gunther Uhlmann

For a function $f$ which foliates a one-sided neighbourhood of a closed hypersurface $M$, we give an estimate of the distance of $M$ to a Wulff shape in terms of the $L^{p}$-norm of the traceless $F$-Hessian of $f$, where $F$ is the support…

偏微分方程分析 · 数学 2024-11-15 Julian Scheuer , Xuwen Zhang

We analyze the inverse problem, originally formulated by Dix in geophysics, of reconstructing the wave speed inside a domain from boundary measurements associated with the single scattering of seismic waves. We consider a domain $\tilde M$…

偏微分方程分析 · 数学 2012-12-04 Maarten V. de Hoop , Sean F. Holman , Einar Iversen , Matti Lassas , Bjørn Ursin

We consider the inverse problem to determine a smooth compact Riemannian manifold $(M,g)$ from a restriction of the source-to-solution operator, $\Lambda_{\mathcal{S,R}}$, for the wave equation on the manifold. Here, $\mathcal{S}$ and…

偏微分方程分析 · 数学 2023-03-24 Matti Lassas , Medet Nursultanov , Lauri Oksanen , Lauri Ylinen

We study an inverse problem of determining a time-dependent damping coefficient and potential appearing in the wave equation in a compact Riemannian manifold of dimension three or higher. More specifically, we are concerned with the case of…

偏微分方程分析 · 数学 2024-07-26 Boya Liu , Teemu Saksala , Lili Yan

In this paper, we consider a fixed metric space (possibly an oriented Riemannian manifold with boundary) with an increasing sequence of distance functions and a uniform upper bound on diameter. When the metric space endowed with the…

度量几何 · 数学 2025-02-17 R. Perales , C. Sormani

Consider a broken geodesics $\alpha([0,l])$ on a compact Riemannian manifold $(M,g)$ with boundary of dimension $n\geq 3$. The broken geodesics are unions of two geodesics with the property that they have a common end point. Assume that for…

偏微分方程分析 · 数学 2007-05-23 Yaroslav Kurylev , Matti Lassas , Gunther Uhlmann