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相关论文: An Inverse Kinematic Problem with Internal Sources

200 篇论文

In this work, we study the inverse problem of recovering a potential coefficient in the subdiffusion model, which involves a Djrbashian-Caputo derivative of order $\alpha\in(0,1)$ in time, from the terminal data. We prove that the inverse…

数值分析 · 数学 2020-09-09 Bangti Jin , Zhi Zhou

We study the inverse problem of determining the coefficients of the fractional power of a general second order elliptic operator given in the exterior of an open subset of the Euclidean space. We show the problem can be reduced into…

偏微分方程分析 · 数学 2021-10-19 Tuhin Ghosh , Gunther Uhlmann

In this paper, we study the inverse boundary value problem for the wave equation with a view towards an explicit reconstruction procedure. We consider both the anisotropic problem where the unknown is a general Riemannian metric smoothly…

偏微分方程分析 · 数学 2017-10-10 Maarten de Hoop , Paul Kepley , Lauri Oksanen

The Euclidean distance geometry problem arises in a wide variety of applications, from determining molecular conformations in computational chemistry to localization in sensor networks. When the distance information is incomplete, the…

信息论 · 计算机科学 2018-10-30 Abiy Tasissa , Rongjie Lai

We consider the inverse problem for time-dependent semilinear transport equations. We show that time-independent coefficients of both the linear (absorption or scattering coefficients) and nonlinear terms can be uniquely determined, in a…

偏微分方程分析 · 数学 2024-05-13 Ru-Yu Lai , Gunther Uhlmann , Hanming Zhou

Inverse problems are prevalent in numerous scientific and engineering disciplines, where the objective is to determine unknown parameters within a physical system using indirect measurements or observations. The inherent challenge lies in…

计算物理 · 物理学 2025-02-06 Georgios E. Pavlou , Vasiliki Pavlidou , Vagelis Harmandaris

This paper studies an inverse boundary value problem for a semilinear Helmholtz equation with Neumann boundary conditions in a bounded domain $\Omega \subset \mathbb{R}^n$ ($n\ge2$). The objective is to recover the unknown linear and…

数值分析 · 数学 2026-03-10 Long-Ling Du , Zejun Sun , Li-Li Wang , Guang-Hui Zheng

We investigate the inverse Cauchy and data completion problems for elliptic partial differential equations in a bounded domain $D \subset \mathbb{R}^d$, $d \ge 2$, with a special emphasis on the steady-state heat conduction in anisotropic…

数值分析 · 数学 2025-06-06 Iulian Cîmpean , Andreea Grecu , Liviu Marin

We establish stability inequalities of an inverse obstacle problem for the magnetic Schr\"odinger equation. We mainly study the problem of reconstructing an unknown function defined on the obstacle boundary from two measurements performed…

偏微分方程分析 · 数学 2024-11-26 Mourad Choulli , Hiroshi Takase

In this work, we investigate the inverse problem of recovering a potential coefficient in an elliptic partial differential equation from the observations at deterministic sampling points in the domain subject to random noise. We employ a…

数值分析 · 数学 2025-05-30 Bangti Jin , Qimeng Quan , Wenlong Zhang

This paper investigates an inverse source problem for general semilinear stochastic hyperbolic equations. Motivated by the challenges arising from both randomness and nonlinearity, we develop a globally convergent iterative regularization…

偏微分方程分析 · 数学 2025-04-25 Qi Lü , Yu Wang

In this paper, we consider an inverse conductivity problem on a bounded domain $\Omega\subset\mathbb{R}^n$, $n\geq2$, also known as Electrical Impedance Tomography (EIT), for the case where unknown impenetrable obstacles are embedded into…

偏微分方程分析 · 数学 2021-04-29 Jiaqing Yang

We present a general framework for reconstructing effective Hamiltonians from known gravitational energy density profiles in curved spacetime. Starting from local thermal equilibrium and Liouville dynamics, we establish an inverse procedure…

广义相对论与量子宇宙学 · 物理学 2025-08-12 Davood Momeni

This paper considers the inverse problem of identifying the source term of parabolic equations from sparse boundary measurements. We used data from moving sensors to locate the unknown source term. This work first proves the uniqueness of…

偏微分方程分析 · 数学 2026-04-14 Qiling Gu , Wenlong Zhang , Zhidong Zhang

We consider an inverse problem for the elastic wave of simultaneously reconstructing the impedance and the geometric information of the bounded body that is occupied by a homogeneous and isotropic elastic medium from the measured Cauchy…

数值分析 · 数学 2025-06-26 Yao Sun , Yan Chang , Yukun Guo

We consider an inverse problem of determining coefficient matrices in an $N$-system of second-order elliptic equations in a bounded two dimensional domain by a set of Cauchy data on arbitrary subboundary. The main result of the article is…

偏微分方程分析 · 数学 2015-06-04 Oleg Imanuvilov , Masahiro Yamamoto

We are concerned with the inverse scattering problem of extracting the geometric structures of an unknown/inaccessible inhomogeneous medium by using the corresponding acoustic far-field measurement. Using the intrinsic geometric properties…

偏微分方程分析 · 数学 2017-06-15 Jingzhi Li , Xiaofei Li , Hongyu Liu

We consider an inverse boundary value problem for a model time-harmonic equation of acoustic tomography of moving fluid with variable current velocity, sound speed, density and absorption. In the present article it is assumed that at fixed…

偏微分方程分析 · 数学 2017-02-14 Alexey Agaltsov

We consider the problem of the recovery of a Robin coefficient on a part $\gamma \subset \partial \Omega$ of the boundary of a bounded domain $\Omega$ from the principal eigenvalue and the boundary values of the normal derivative of the…

偏微分方程分析 · 数学 2020-07-08 Matteo Santacesaria , Toshiaki Yachimura

The inverse problem of amplitude reconstruction on an inclined line based on the values of amplitude or its module as recorded on semi-infinite line orthogonal to the beam propagation direction is considered within the framework of 2D…

数值分析 · 数学 2021-05-21 R. M. Feshchenko , I. A. Artyukov , A. V. Vinogradov