Results 91 to 100 of about 1,208,780 (193)

Carleman estimates and unique continuation for the Schroedinger equation

open access: yesDifferential and Integral Equations, 1995
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +3 more sources

Global Lipschitz stability for an inverse coefficient problem for a mean field game system

open access: yesMathematical Methods in the Applied Sciences, Volume 48, Issue 3, Page 3858-3870, February 2025.
For an inverse coefficient problem of determining a state‐varying factor in the corresponding Hamiltonian for a mean field game system, we prove the global Lipschitz stability by spatial data of one component and interior data in an arbitrarily chosen subdomain over a time interval. The proof is based on Carleman estimates with different norms.
Oleg Imanuvilov, Masahiro Yamamoto
wiley   +1 more source

On Carleman estimates for pseudo-differential operators [PDF]

open access: yesInventiones Mathematicae, 1972
The original purpose of this work was to prove the regularity theorems in [1] without using Fourier integral operators. Instead we use the method of Carleman estimates of H6rmander ([3], Ch. 8), with the weight function e ~Cx) replaced by a pseudo-differential operator e r ~ C x ' ~ s~x'~ of variable order s(x, 4).
openaire   +2 more sources

A degenerate population system: Carleman estimates and controllability

open access: yes, 2020
In this paper we consider a system in non divergence form which models the interaction between two different species u and v. Both of them depend on time, on age and on space. Moreover, the diffusion coefficients degenerate at the boundary of domain.
Boutaayamou I., Fragnelli G.
core   +1 more source

Carleman estimates with two large parameters for an anisotropic system of elasticity [PDF]

open access: yes, 2016
We consider the system of partial differential equations of transversely isotropic elasticity with residual stress. Completing previous results we derive Carleman estimates for this system containing time derivatives.
Isakov, Viktor
core   +1 more source

Carleman estimates and necessary conditions for the existence of waveguides

open access: yes, 2012
We study via Carleman estimates the sharpest possible exponential decay for waveguide solutions to the Laplace equation (partial derivative(2)(t) + Delta)u = Vu + W .
FANELLI, Luca, L. Escauriaza
core   +1 more source

Carleman estimates for some elliptic systems [PDF]

open access: yesJournal of Physics: Conference Series, 2008
A Carleman estimate for a certain first order elliptic system is proved. The proof is elementary and does not rely on pseudo-differential calculus. This estimate is used to prove Carleman estimates for the isotropic Lame system as well as for the isotropic Maxwell system with C1 coefficients.
openaire   +1 more source

Carleman Estimates and Unique Continuation Property for Abstract Elliptic Equations

open access: yes, 2011
The unique continuation theorems for elliptic differential-operator equations with variable coefficients in vector-valued L-p-space are investigated. The operator-valued multiplier theorems, maximal regularity properties and the Carleman estimates for ...
Shakhmurov, Veli B.
core   +1 more source

Carleman estimates for the time-fractional advection-diffusion equations and applications

open access: yes
In this article, we prove Carleman estimates for the generalized time-fractional advection-diffusion equations by considering the fractional derivative as perturbation for the first order time-derivative. As a direct application of the Carleman estimates,
Huang X., Li Z., Yamamoto M.
core   +1 more source

Interior degenerate/singular parabolic equations in nondivergence form: well-posedness and Carleman estimates [PDF]

open access: yes, 2016
We consider non smooth general degenerate/singular parabolic equations in non divergence form with degeneracy and singularity occurring in the interior of the spatial domain, in presence of Dirichlet or Neumann boundary conditions.
FRAGNELLI, Genni, Genni Fragnelli
core   +1 more source

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