Results 21 to 30 of about 109,235 (268)

Factorization of linear elliptic boundary value problems in non-cylindrical domains [PDF]

open access: yesComptes Rendus. Mathématique, 2011
We present a method of factorization for linear elliptic boundary value problems considered in non-cylindrical domains. We associate a control problem to the boundary value problem which regularizes it. The technique of change of variables is used to study this problem.
Henry, Jacques   +2 more
openaire   +1 more source

Steady state non-Newtonian flow with strain rate dependent viscosity in domains with cylindrical outlets to infinity

open access: yesNonlinear Analysis, 2021
The paper deals with a stationary non-Newtonian flow of a viscous fluid in unbounded domains with cylindrical outlets to infinity. The viscosity is assumed to be smoothly dependent on the gradient of the velocity.
Grigory Panasenko   +2 more
doaj   +1 more source

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   +1 more source

The integral equation approach to kinematic dynamo theory and its application to dynamo experiments in cylindrical geometry [PDF]

open access: yes, 2007
The conventional magnetic induction equation that governs hydromagnetic dynamo action is transformed into an equivalent integral equation system. An advantage of this approach is that the computational domain is restricted to the region occupied by the ...
Beltrami   +42 more
core   +1 more source

Logarithmic wave equations in non-cylindrical domains

open access: yes, 2021
This paper is devoted to studying a type of logarithmic wave equation in non-cylindrical domains. Firstly, by the penalty method, we prove the existence of weak solutions to such kind of equations. Secondly, different from the dissipative wave equation, the energy defined in this problem is not always positive.
openaire   +2 more sources

Parabolic equations in time dependent domains [PDF]

open access: yes, 2015
We show existence and uniqueness results for nonlinear parabolic equations in noncylindrical domains with possible jumps in the time variableComment: 22 pages. The uniqueness part was redone.
Calvo, Juan   +2 more
core   +2 more sources

Enhanced diffusion and non-Gaussian dynamics in driven magnetic nanoparticles

open access: yesPhysical Review Research, 2020
We investigate the out-of-equilibrium dynamics of paramagnetic colloidal nanoparticles driven above a triangular lattice of cylindrical ferromagnetic domains. We use an external precessing magnetic field to create a dynamic energy landscape which propels
Ralph Lukas Stoop, Pietro Tierno
doaj   +1 more source

Limiting absorption principle and perfectly matched layer method for Dirichlet Laplacians in quasi-cylindrical domains [PDF]

open access: yes, 2011
We establish a limiting absorption principle for Dirichlet Laplacians in quasi-cylindrical domains. Outside a bounded set these domains can be transformed onto a semi-cylinder by suitable diffeomorphisms.
Duclos P.   +6 more
core   +1 more source

About the Benjamin-Bona-Mahony Equation in Domains with Moving Boundary

open access: yesTrends in Computational and Applied Mathematics, 2007
In this article, we prove the existence of solutions for an hyperbolic equation known as the Benjamin-Bona-Mahony equation. Our study involves increasing, decreasing, and mixed non-cylindrical domains and for this analysis, our main tools are the change ...
C.S.Q. Caldas   +3 more
doaj   +1 more source

General Fractional Vector Calculus

open access: yesMathematics, 2021
A generalization of fractional vector calculus (FVC) as a self-consistent mathematical theory is proposed to take into account a general form of non-locality in kernels of fractional vector differential and integral operators.
Vasily E. Tarasov
doaj   +1 more source

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