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We consider the Cauchy problem for the spatially inhomogeneous non-cutoff Boltzmann equation with polynomially decaying initial data in the velocity variable. We establish short-time existence for any initial data with this decay in a fifth…

偏微分方程分析 · 数学 2020-03-11 Christopher Henderson , Stanley Snelson , Andrei Tarfulea

In this paper we consider the stability issue for the inverse problem of determining an unknown inclusion contained in an elastic body by all the pairs of measurements of displacement and traction taken at the boundary of the body. Both the…

偏微分方程分析 · 数学 2016-10-06 Antonino Morassi , Edi Rosset

This paper concerns the inverse source problems for the time-harmonic elastic and electromagnetic wave equations. The goal is to determine the external force and the electric current density from boundary measurements of the radiated wave…

偏微分方程分析 · 数学 2018-08-17 Gang Bao , Peijun Li , Yue Zhao

We prove logarithmic stability in the parabolic inverse problem of determining the space-varying factor in the source, by a single partial boundary measurement of the solution to the heat equation in an infinite closed waveguide, with…

偏微分方程分析 · 数学 2016-12-26 Yavar Kian , Diomba Sambou , Eric Soccorsi

In this paper we study the inverse boundary value problem of determining the potential in the Schr\"{o}dinger equation from the knowledge of the Dirichlet-to-Neumann map, which is commonly accepted as an ill-posed problem in the sense that,…

偏微分方程分析 · 数学 2012-11-29 Elena Beretta , Maarten V. de Hoop , Lingyun Qiu

We establish Lipschitz stability for both the potential and the initial conditions from a single boundary measurement in the context of a hyperbolic boundary initial value problem. In our setting, the initial conditions are allowed to…

偏微分方程分析 · 数学 2025-11-25 Shiqi Ma

We consider the impedance tomography problem in the plane. Using Bukhgeim's scattering data for the Dirac problem, we prove that the conductivity is uniquely determined by the Dirichlet-to-Neuman map

数学物理 · 物理学 2017-07-26 Evgeny Lakshtanov , Jorge Tejero , Boris Vainberg

We study the inverse boundary value problem for the Helmholtz equation using the Dirichlet-to-Neumann map at selected frequencies as the data. A conditional Lipschitz stability estimate for the inverse problem holds in the case of…

偏微分方程分析 · 数学 2019-06-05 Elena Beretta , Maarten V. de Hoop , Florian Faucher , Otmar Scherzer

This paper presents an inverse problem for the nonlinear 1-d Kuramoto-Sivashinsky (K-S) equation. More precisely, we study the nonlinear inverse problem of retrieving the anti-diffusion coefficient from the measurements of the solution on a…

偏微分方程分析 · 数学 2012-09-20 Lucie Baudouin , Eduardo Cerpa , Emmanuelle Crépeau , Alberto Mercado

We study the well-posedness of the Bayesian inverse problem for scalar hyperbolic conservation laws where the statistical information about inputs such as the initial datum and (possibly discontinuous) flux function are inferred from noisy…

数值分析 · 数学 2021-07-23 Siddhartha Mishra , David Ochsner , Adrian M. Ruf , Franziska Weber

A major problem in solving multi-waves inverse problems is the presence of critical points where the collected data completely vanishes. The set of these critical points depend on the choice of the boundary conditions, and can be directly…

偏微分方程分析 · 数学 2015-11-11 Mourad Choulli , Faouzi Triki

We prove that the Cauchy problem for the two-dimensional Zakharov system is locally well-posed for initial data which are localized perturbations of a line solitary wave. Furthermore, for this Zakharov system, we prove weak convergence to a…

偏微分方程分析 · 数学 2018-03-22 Hung Luong

In this work I study the well-posedness of the Cauchy problem associated with the coupled Schr\"odinger equations {with quadratic nonlinearities}, which appears modeling problems in nonlinear optics. I obtain the local well-posedness for…

偏微分方程分析 · 数学 2018-07-03 Isnaldo Isaac

We prove the long-standing inverse scattering theory (IST) of perturbed Kadomtsev Petviashvili multi-line solitons. Our work is the first rigorous IST of a multi-dimensional integrable system when both continuous and discrete scattering…

偏微分方程分析 · 数学 2024-08-19 Derchyi Wu

We show in this paper a Lipschitz stability result for a crack inverse problem in half space. The direct problem is a Laplace equation with zero Neumann condition on the top boundary. The forcing term is a discontinuity across the crack.…

偏微分方程分析 · 数学 2021-09-01 Darko Volkov , Yulong Jiang

In this paper we investigate the non-linear and ill-posed inverse problem of simultaneously identifying the conductivity and the reaction in diffuse optical tomography with noisy measurement data available on an accessible part of the…

数值分析 · 数学 2020-07-10 Tran Nhan Tam Quyen

In this paper, we study the stability of two inverse boundary value problems in an infinite slab with partial data. These problems have been studied by Li and Uhlmann for the case of the Schrodinger equation and by Krupchyk, Lassas and…

偏微分方程分析 · 数学 2015-12-01 Pedro Caro , Kaloyan Marinov

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

Global existence for small data Cauchy problem of semilinear wave equations with scaling invariant damping in 3-D is established in this work, assuming that the data are radial and the constant in front of the damping belongs to $[1.5, 2)$.…

偏微分方程分析 · 数学 2021-02-02 Ning-An Lai , Yi Zhou

We examine the stability issue in the inverse problem of determining a scalar potential appearing in the stationary Schr{\"o}dinger equation in a bounded domain, from a partial elliptic Dirichlet-to-Neumann map. Namely, the Dirichlet data…

偏微分方程分析 · 数学 2015-01-09 Mourad Choulli , Yavar Kian , Eric Soccorsi