Results 31 to 40 of about 1,641,201 (192)

Lipschitz Stability Estimate and Uniqueness in the Retrospective Analysis for The Mean Field Games System via Two Carleman Estimates [PDF]

open access: yes, 2023
A retrospective analysis process for the mean field games system (MFGS) is considered. For the first time, Carleman estimates are applied to the analysis of the MFGS. Two new Carleman estimates are derived.
Klibanov, Michael V., Averboukh, Yurii
core   +1 more source

A Strongly Ill-Posed Problem for the Equation

open access: yesCumhuriyet Science Journal, 2018
In this work, we consider an inverse problem for an elliptic equationwhich is strongly ill-posed in Hadamard sense. We prove the uniqueness of thesolution of the problem by using Carleman estimates.
Mustafa Yıldız
doaj   +1 more source

Inverse parabolic problems of determining functions with one spatial-component independence by Carleman estimate

open access: yes, 2021
International audienceAbstract For a parabolic equation in the spatial variable x = ( x 1 , … , x n ) {x=(x_{1},\ldots,x_{n})} and time t , we consider an inverse problem of determining a coefficient which is independent of one spatial component x n {x_ ...
Kian, Yavar   +8 more
core   +2 more sources

Insensitizing controls for the Cahn-Hilliard type equation

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2014
This paper is addressed to showing the existence of insensitizing controls for the one-dimensional Cahn--Hilliard type equation with a superlinear nonlinearity. We solve this problem by reducing the original problem to a controllability problem.
Peng Gao
doaj   +1 more source

Uniqueness properties for discrete equations and Carleman estimates

open access: yesJournal of Functional Analysis, 2017
In the revised version, published in 2017, we improve our Carleman estimate and the method of proof of Theorem 1.1 in order to quantify the uniqueness result in the one dimensional case, proving the sharp uniqueness result conjectured by Lyubarskii, Jaming, Malinnikova and ...
Bertolin, Aingeru Fernández, Vega, Luis
openaire   +5 more sources

Approximate controllability of the coupled degenerate system with two boundary controls

open access: yesBoundary Value Problems, 2017
In this paper, we investigate the approximate controllability of the coupled system with boundary degeneracy. The control functions act on the degenerate boundary. We prove the Carleman estimate and the unique continuation of the adjoint system.
Runmei Du
doaj   +1 more source

Lipschitz stability in an inverse problem for the Korteweg-de Vries equation on a finite domain

open access: yesBoundary Value Problems, 2017
In this paper, we address an inverse problem for the Korteweg-de Vries equation posed on a bounded domain with boundary conditions proposed by Colin and Ghidaglia.
Mo Chen
doaj   +1 more source

Stabilization of the weakly coupled plate equations with a locally distributed damping

open access: yesAdvances in Difference Equations, 2020
In this paper, we study the indirect stabilization of a system of plate equations which are weakly coupled and locally damped. By virtue of the general results due to Burq in the study of asymptotic behavior of solutions, we prove that the semigroup ...
Xianzheng Zhu
doaj   +1 more source

Carleman’s and subelliptic estimates

open access: yesDuke Mathematical Journal, 1988
Für einen Differentialoperator P der Ordnung m in \(\Omega \subset R^ n\) und einer glatten reellen Funktion \(\psi\) sei \(P_{\gamma}=e^{-\psi \gamma}Pe^{\psi \gamma}\) mit \(\gamma\geq 1\) gesetzt. Verf. zeigt die Ungleichungen \(\gamma^{1/(k+1)}\| u\|_{m-1,\gamma}\leq C_ K\| P_{\gamma}u\|_{L^ 2}\) und \(\gamma^{-k/(k+1)}\| u\|_{m,\gamma}\leq C_ K ...
openaire   +3 more sources

Carleman estimates for stratified media

open access: yesJournal of Functional Analysis, 2011
Let \(\Omega=\Omega'\times (-H,H)\) be a cylinder in \(\mathbb R^n\), where \(\Omega'\) is a nonempty bounded set in \(\mathbb R^{n-1}\). Let \(S=\Omega'\times\{0\}\) be an interface where coefficients and functions may jump. The authors prove Carleman estimates for anisotropic elliptic and parabolic operators with discontinuities on \(S\).
Benabdallah, Assia   +2 more
openaire   +3 more sources

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