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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

Consider the two-dimensional inverse elastic wave scattering by an infinite rough surface with a Dirichlet boundary condition. A non-interative sampling technique is proposed for detecting the rough surface by taking elastic wave…

偏微分方程分析 · 数学 2020-12-15 Tielei Zhu , Jiaqing Yang

This article is devoted to inverse problems of recovering point sources in mathematical models of heat and mass transfer. The main attention is paid to well-posedness questions of these inverse problems with pointwise overdetermination…

偏微分方程分析 · 数学 2023-09-01 Sergey Pyatkov , Lyubov Neustroeva

In this article we deal with one-dimensional inverse problems concerning the Burgers equation and some related nonlinear systems (involving heat effects and/or variable density). In these problems, the goal is to find the size of the…

偏微分方程分析 · 数学 2022-01-05 J. Apraiz , A. Doubova , E. Fernández-Cara , M. Yamamoto

Following a recent paper by N. Mandache (Inverse Problems 17 (2001), pp. 1435-1444), we establish a general procedure for determining the instability character of inverse problems. We apply this procedure to many elliptic inverse problems…

偏微分方程分析 · 数学 2007-05-23 Michele Di Cristo , Luca Rondi

This article is devoted to forward and inverse problems associated with time-independent semilinear nonlocal wave equations. We first establish comprehensive well-posedness results for some semilinear nonlocal wave equations. The main…

偏微分方程分析 · 数学 2024-02-09 Yi-Hsuan Lin , Teemu Tyni , Philipp Zimmermann

This paper concerns the reconstruction of a diffusion coefficient in an elliptic equation from knowledge of several power densities. The power density is the product of the diffusion coefficient with the square of the modulus of the…

偏微分方程分析 · 数学 2012-03-07 Guillaume Bal , Eric Bonnetier , Francois Monard , Faouzi Triki

For semilinear wave equations on Lorentzian manifolds with quadratic derivative non-linear terms, we study the inverse problem of determining the background Lorentzian metric. Under some conditions on the nonlinear term, we show that from…

偏微分方程分析 · 数学 2016-12-15 Yiran Wang , Ting Zhou

We consider an inverse boundary value problem for Maxwell's equations, which aims to recover the electromagnetic material properties of a body from measurements on the boundary. We show that a Lipschitz continuous conductivity, electric…

偏微分方程分析 · 数学 2018-07-11 Monika Pichler

This paper investigates the nature of the development of two-dimensional laminar flow of an incompressible fluid at the reversed stagnation-point. ". In this study, we revisit the problem of reversed stagnation-point flow over a flat plate.…

流体动力学 · 物理学 2013-02-14 Vai Kuong Sin , Chon Kit Chio

We consider a one-dimensional fluid-solid interaction model governed by the Burgers equation with a time varying interface. We discuss on the inverse problem of determining the shape of the interface from Dirichlet and Neumann data at one…

偏微分方程分析 · 数学 2024-01-31 J. Apraiz , A. Doubova , E. Fernández-Cara , M. Yamamoto

We consider the inverse problem of estimating parameters of a driven diffusion (e.g., the underlying fluid flow, diffusion coefficient, or source terms) from point measurements of a passive scalar (e.g., the concentration of a pollutant).…

数值分析 · 数学 2019-05-22 Jeff Borggaard , Nathan E. Glatt-Holtz , Justin A. Krometis

The inverse problem of finding the velocity profile from the surface measurements of acoustic field is considered. The dimensionalities of the data and of the unknown velocity profile are equal, both are equal 3. Analytical explicit…

数学物理 · 物理学 2007-05-23 A. G. Ramm

The subject of this thesis is in the area of Applied Mathematics known as Inverse Problems. Inverse problems are those where a set of measured data is analysed in order to get as much information as possible on a model which is assumed to…

数学物理 · 物理学 2009-12-03 Andrea A. Almasy

In this paper we cover a few topics on how to treat inverse problems. There are two different flows of ideas. One approach is based on Morse Lemma. The other is based on analyticity which proves that the number of solutions to the inverse…

经典分析与常微分方程 · 数学 2024-08-28 Marian Petrica , Ionel Popescu

This paper derives a finite-strain plate theory consistent with the principle of stationary three-dimensional (3-D) potential energy under general loadings with a third-order error. Staring from the 3-D nonlinear elasticity (with both…

经典物理 · 物理学 2015-06-22 Hui-Hui Dai , Zilong Song

When estimating quantities and fields that are difficult to measure directly, such as the fluidity of ice, from point data sources, such as satellite altimetry, it is important to solve a numerical inverse problem that is formulated with…

数学软件 · 计算机科学 2023-08-11 Reuben W. Nixon-Hill , Daniel Shapero , Colin J. Cotter , David A. Ham

We consider the inverse problem of recovering both an unknown electric current and the surrounding electromagnetic parameters of a medium from boundary measurements. This inverse problem arises in brain imaging. We show that under generic…

偏微分方程分析 · 数学 2017-10-25 Youjun Deng , Hongyu Liu , Gunther Uhlmann

This paper focuses on stability estimates of the inverse random source problems for the polyharmonic, electromagnetic, and elastic wave equations. The source is represented as a microlocally isotropic Gaussian random field, which is defined…

偏微分方程分析 · 数学 2024-10-11 Peijun Li , Ying Liang , Xu Wang

Integral equations frequently arise in surface science, and in some cases, they must be treated as inverse problems. In our previous work on optical tweezers, atomic force microscopy, and surface force measurement apparatus, we performed…

软凝聚态物质 · 物理学 2026-01-13 Keito Hashidate , Rieko Iwayasu , Takumi Otake , Ken-ichi Amano