Results 1 to 10 of about 639,340 (301)

The wave equation with locally distributed control in non-cylindrical domain [PDF]

open access: yesBoundary Value Problems, 2019
This paper is concerned with exact internal controllability for a one-dimensional wave equation in a non-cylindrical domain. This equation characterizes the motion of a string with a fixed endpoint and the other moving one.
Lizhi Cui
doaj   +4 more sources

An existence result for evolution equations in non-cylindrical domains [PDF]

open access: yesNonlinear Differential Equations and Applications NoDEA, 2013
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
F. Paronetto
semanticscholar   +6 more sources

Controllability for a One-Dimensional Wave Equation in a Non-cylindrical Domain [PDF]

open access: yesMediterranean Journal of Mathematics, 2019
This paper deals with the controllability for a one-dimensional wave equation with mixed boundary conditions in a non-cylindrical domain. This equation models small vibrations of a string where an endpoint is fixed and the other is moving.
I. P. de Jesus
semanticscholar   +3 more sources

Multiplicity results for a class of $p(x)$-Kirchhoff type equations with combined nonlinearities [PDF]

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2012
Using the mountain pass theorem combined with the Ekeland variational principle, we obtain at least two distinct, non-trivial weak solutions for a class of $p(x)$-Kirchhoff type equations with combined nonlinearities.
Nguyen Thanh Chung
doaj   +4 more sources

Construction of a Right Inverse for the Divergence in Non-cylindrical Time Dependent Domains [PDF]

open access: yesAnnals of PDE, 2021
We construct a stable right inverse for the divergence operator in non-cylindrical domains in space-time. The domains are assumed to be Hölder regular in space and evolve continuously in time.
Olli Saari, S. Schwarzacher
semanticscholar   +5 more sources

Dynamical boundary conditions in a non-cylindrical domain for the Laplace equation [PDF]

open access: yesJournal of Mathematical Analysis and Applications, 2017
In this paper, we study existence, uniqueness and asymptotic behavior of the Laplace equation with dynamical boundary conditions on regular non-cylindrical domains.
Pedro T. P. Lopes, Marcone C. Pereira
semanticscholar   +4 more sources

Fredholmness of an abstract differential equation of elliptic type [PDF]

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2004
In this work, we obtain algebraic conditions which assure the Fredholm solvability of an abstract differential equation of elliptic type. In this respect, our work can be considered as an extension of Yakubov's results to the case of boundary conditions ...
A. Aibeche
doaj   +4 more sources

Weak solutions of fractional differential equations in non cylindrical domain

open access: yesNonlinear Analysis: Real World Applications, 2016
We study a time fractional heat equation in a noncylindrical domain. The problem is one-dimensional. We prove existence of properly defined weak solutions by means of the Galerkin approximation.
A. Kubica, P. Rybka, K. Ryszewska
semanticscholar   +3 more sources

The wave equation with internal control in non-cylindrical domains

open access: yesAdvances in Difference Equations, 2017
In this paper, we shall be concerned with interior controllability for a one-dimensional wave equation in a domain with moving boundary. When the speed of the moving endpoint is less than a certain constant which is less than the characteristic speed, we
L. Cui
semanticscholar   +4 more sources

Pullback attractors for non-autonomous reaction-diffusion equation in non-cylindrical domains [PDF]

open access: yesAdvances in Difference Equations, 2016
In non-cylindrical domains, we use the definition of the variational solution and the maximum principle (the Galerkin method used usually in a cylindrical domain cannot be applied directly) to prove the existence of a pullback Dλ1\documentclass[12pt ...
Yanping Xiao
semanticscholar   +3 more sources

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