Results 11 to 20 of about 109,235 (268)

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

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   +4 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

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

Exact controllability for a one-dimensional wave equation in non-cylindrical domains

open access: yesJournal of Mathematical Analysis and Applications, 2013
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Cui, Lizhi, Liu, Xu, Gao, Hang
openaire   +3 more sources

Universal Algorithm for Simulating and Evaluating Cyclic Voltammetry at Macroporous Electrodes by Considering Random Arrays of Microelectrodes [PDF]

open access: yes, 2020
An algorithm for the simulation and evaluation of cyclic voltammetry (CV) at macroporous electrodes such as felts, foams, and layered structures is presented.
Andrae, Dirk   +4 more
core   +1 more source

Weak solutions of parabolic equations in non-cylindrical domains [PDF]

open access: yesProceedings of the American Mathematical Society, 1997
In their classical work, Ladyzhenskaya and Ural ′ ’ tseva gave a definition of weak solution for parabolic equations in cylindrical domains. Their definition was broad enough to guarantee the solvability of all such problems but narrow enough to guarantee the uniqueness of these solutions.
Brown, Russell M.   +2 more
openaire   +2 more sources

Exact Null Controllability of a One-Dimensional Wave Equation with a Mixed Boundary

open access: yesMathematics, 2023
In this paper, exact null controllability of one-dimensional wave equations in non-cylindrical domains was discussed. It is different from past papers, as we consider boundary conditions for more complex cases.
Lizhi Cui, Jing Lu
doaj   +1 more source

p-Laplacian wave equations in non-cylindrical domains

open access: yes, 2021
This paper is devoted to studying the stability of p-Laplacian wave equations with strong damping in non-cylindrical domains. The method of proof based on some estimates for time-varying coefficients rising from moving boundary and a modified Kormonik inequality.
Liu, Lingyang, Gao, Hang
openaire   +2 more sources

Thermal analysis on mutual interaction of temperature stratification and solutal stratification in the presence of non-linear thermal radiations

open access: yesCase Studies in Thermal Engineering, 2022
The mutual interaction of thermal stratification and solutal stratification in mixed convection flow regimes claims many thermal engineering standpoints in daily life and so holds the interest of researchers in the thermal science of fluid flows.
Khalil Ur Rehman, Wasfi Shatanawi
doaj   +1 more source

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