Results 1 to 10 of about 20,710 (241)

The Non-Homogeneous Wave Equation in Non-Cylindrical Domains

open access: yesTrends in Computational and Applied Mathematics, 2001
We prove the existence and uniqueness of a global regular solution to the mixed problem for the nonhomogeneous wave equation in a noncylindrical domain using a hiperbolic nonsingular smooth transformation of the original problem to a nonlinear hyperbolic
N.A Lar'kin, M.H. Simões
doaj   +2 more sources

Variational Equations of Schroedinger-Type in Non-cylindrical Domains

open access: yesJournal of Differential Equations, 2001
The boundary value problem \[ u(x, t)_t- i\sum (a_{ij}(x, t) u(x,t)_{x_i})_{x_j}- c(x,t) u(x,t)= f(x,t)\;\text{in }Q, \] \[ u(x,t)= 0\;\text{on }\Sigma,\quad u(x,0)= u_0(x)\;\text{on }Q_0, \] is investigated, where \(Q\subset \mathbb{R}^n\times (0,T)\) is an open subset (with the lateral boundary denoted by \(\Sigma\)) whose sections \(Q_t\) (\(t ...
BERNARDI, MARCO LUIGI   +2 more
openaire   +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
Lizhi Cui
doaj   +3 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.
Fabio Paronetto
openaire   +4 more sources

Self-Consistent Field Modeling of Bottle-Brush with Aggrecan-like Side Chain [PDF]

open access: yesBiomimetics
Bottle-brush polymers with aggrecan-like side chains represent a class of biomimetic macromolecules that replicate key structural and functional features of natural complexes of aggrecans with hyaluronic acid (HA) which are the major components of ...
Ivan V. Mikhailov   +3 more
doaj   +2 more sources

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

open access: yesAnnals of PDE, 2023
AbstractWe 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. The inverse operator is of Bogovskij type, meaning that it attains zero boundary values.
Olli Saari, Sebastian Schwarzacher
openaire   +6 more sources

Weak solutions of fractional differential equations in non cylindrical domains

open access: yesNonlinear Analysis: Real World Applications, 2017
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
openaire   +5 more sources

On the Exact Boundary Control for the Linear Klein-Gordon Equation in Non-cylindrical Domains

open access: yesTrends in Computational and Applied Mathematics, 2020
The purpose of this paper is to study an exact boundary controllability problem in noncylindrical domains for the linear Klein-Gordon equation. Here, we work near of the extension techniques presented By J.
R. S. O. Nunes
doaj   +6 more sources

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

open access: yesJournal of Mathematical Analysis and Applications, 2018
This is a new version of a previous paper submitted here in Arxiv. It has substantial changes from the previous one.
Lopes, Pedro T. P., Pereira, Marcone C.
openaire   +4 more sources

Dissipative Boussinesq equations on non-cylindrical domains in R^n

open access: yesElectronic Journal of Differential Equations, 2010
This article concerns the initial-boundary value problem for the nonlinear Boussinesq equations on time dependent domains in $mathbb{R}^n$ with $1leq n leq 4$.
Haroldo R. Clark   +3 more
doaj   +1 more source

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