Results 1 to 10 of about 3,320,198 (344)

INVARIANT SUBSPACES IN UNBOUNDED DOMAINS

open access: yesПроблемы анализа, 2021
We study subspaces of functions analytic in an unbounded convex domain of the complex plane and invariant with respect to the differentiation operator.
A. S. Krivosheev, O. A. Krivosheeva
doaj   +2 more sources

The unified transform for mixed boundary condition problems in unbounded domains. [PDF]

open access: yesProc Math Phys Eng Sci, 2019
This paper implements the unified transform to problems in unbounded domains with solutions having corner singularities. Consequently, a wide variety of mixed boundary condition problems can be solved without the need for the Wiener–Hopf technique.
Colbrook MJ, Ayton LJ, Fokas AS.
europepmc   +2 more sources

Random attractors for stochastic plate equations with memory in unbounded domains

open access: yesOpen Mathematics, 2021
In this paper, we investigate the dynamics of stochastic plate equations with memory in unbounded domains. More specifically, we obtain the uniform time estimates for solutions of the problem.
Yao Xiao Bin
doaj   +2 more sources

The concentration-compactness principle for fractional order Sobolev spaces in unbounded domains and applications to the generalized fractional Brezis–Nirenberg problem [PDF]

open access: yesNonlinear Differential Equations and Applications, 2018
In this paper we extend the well-known concentration-compactness principle for the Fractional Laplacian operator in unbounded domains. As an application we show sufficient conditions for the existence of solutions to some critical equations involving the
Julian Fernández Bonder   +2 more
exaly   +2 more sources

On a nonolinear wave equation in unbounded domains [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1988
We study existence and uniqeness of the nonlinear wave equation∂2u∂t2+M(x,∫|∇u(x,t)|2dx+∫|u(x,t)|2dx)(−Δu+u)=0in unbounded domains. The above model describes nonlinear wave phenomenon in non-homogeneous media.
Carlos Frederico Vasconcellos
doaj   +2 more sources

Modulation Equation and SPDEs on Unbounded Domains [PDF]

open access: yesCommunications in Mathematical Physics, 2017
We consider the approximation via modulation equations for nonlinear SPDEs on unbounded domains with additive space-time white noise. Close to a bifurcation an infinite band of eigenvalues changes stability, and we study the impact of small space–time ...
L. Bianchi, D. Blömker, G. Schneider
semanticscholar   +4 more sources

Review and Recent Developments on the Perfectly Matched Layer (PML) Method for the Numerical Modeling and Simulation of Elastic Wave Propagation in Unbounded Domains [PDF]

open access: yesArchives of Computational Methods in Engineering, 2021
This review article revisits and outlines the perfectly matched layer (PML) method and its various formulations developed over the past 25 years for the numerical modeling and simulation of wave propagation in unbounded media.
F. Pled, C. Desceliers
semanticscholar   +1 more source

Adaptive Hermite Spectral Methods in Unbounded Domains [PDF]

open access: yesApplied Numerical Mathematics, 2022
Recently, new adaptive techniques were developed that greatly improved the efficiency of solving PDEs using spectral methods. These adaptive spectral techniques are especially suited for accurately solving problems in unbounded domains and require the ...
T. Chou, Sihong Shao, Mingtao Xia
semanticscholar   +1 more source

Solving a Dirichlet problem on unbounded domains via a conformal transformation [PDF]

open access: yesMathematische Annalen, 2022
In this paper, we solve the p-Dirichlet problem for Besov boundary data on unbounded uniform domains with bounded boundaries when the domain is equipped with a doubling measure satisfying a Poincaré inequality. This is accomplished by studying a class of
Ryan Gibara   +2 more
semanticscholar   +1 more source

Fractional Calderón problems and Poincaré inequalities on unbounded domains [PDF]

open access: yesJournal of Spectral Theory, 2022
We generalize many recent uniqueness results on the fractional Calder\'on problem to cover the cases of all domains with nonempty exterior. The highlight of our work is the characterization of uniqueness and nonuniqueness of partial data inverse problems
J. Railo, Philipp Zimmermann
semanticscholar   +1 more source

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