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Invariant Subspaces in Unbounded Domains

open access: yesIssues of Analysis, 2021
Summary: We study subspaces of functions analytic in an unbounded convex domain of the complex plane and invariant with respect to the differentiation operator. This paper is devoted to the study of the problem of representing all functions from an invariant subspace by series of exponential monomials. These exponential monomials are eigenfunctions and
A. S. Krivosheev, O. A. Krivosheeva
openaire   +2 more sources

Spectrally adapted physics-informed neural networks for solving unbounded domain problems

open access: yesMachine Learning: Science and Technology, 2023
Solving analytically intractable partial differential equations (PDEs) that involve at least one variable defined on an unbounded domain arises in numerous physical applications.
Mingtao Xia, Lucas Böttcher, Tom Chou
doaj   +1 more source

Axisymmetric Scaled Boundary Finite Element Formulation for Wave Propagation in Unbounded Layered Media [PDF]

open access: yesCivil Engineering Infrastructures Journal, 2020
Wave propagation in unbounded layered media with a new formulation of Axisymmetric Scaled Boundary Finite Element Method (AXI-SBFEM) is derived. Dividing the general three-dimensional unbounded domain into a number of independent two-dimensional ones ...
Mojtaba Aslmand, Iradj Mahmoudzadeh Kani
doaj   +1 more source

NOT LOCAL PROBLEM OF TYPE OF THE PROBLEM BITSADZE – SAMARSKY FOR THE EQUATION THE MIXED TYPE IN UNLIMITED AREA [PDF]

open access: yesVestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2010
In this paper the existence and uniqueness of the solution of the nonlocal boundary value problem for the mixed type equation in unbounded domain are proved.In this paper the existence and uniqueness of the solution of the non-local boundary value ...
Zunnunov R.T.
doaj   +1 more source

Dynamic Analysis of Foundations on Saturated Clay Using an Energy Absorbing Layer [PDF]

open access: yesEngineering and Technology Journal, 2011
In this study, a method to model the semi-infinite extension (unbounded domain) of the saturated soil is developed. In this method, the unbounded domain is replaced by an absorbing layer of finite thickness with properties that appreciably reduce the ...
Saad F. A. Al-Wakel   +2 more
doaj   +1 more source

Decaying positive global solutions of second order difference equations with mean curvature operator

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2020
A boundary value problem on an unbounded domain, associated to difference equations with the Euclidean mean curvature operator is considered. The existence of solutions which are positive on the whole domain and decaying at infinity is examined by ...
Zuzana Dosla   +2 more
doaj   +1 more source

Large-domain stability of random attractors for stochastic g-Navier–Stokes equations with additive noise

open access: yesJournal of Inequalities and Applications, 2020
This paper concerns the long term behavior of the stochastic two-dimensional g-Navier–Stokes equations with additive noise defined on a sequence of expanding domains, where the ultimate domain is unbounded and of Poincaré type.
Fuzhi Li, Dongmei Xu, Lianbing She
doaj   +1 more source

A hybrid method for solving time fractional advection–diffusion equation on unbounded space domain

open access: yesAdvances in Difference Equations, 2020
In this article, a hybrid method is developed for solving the time fractional advection–diffusion equation on an unbounded space domain. More precisely, the Chebyshev cardinal functions are used to approximate the solution of the problem over a bounded ...
H. Azin, F. Mohammadi, M. H. Heydari
doaj   +1 more source

On unique extension of time changed reflecting Brownian motions [PDF]

open access: yes, 2008
Let $D$ be an unbounded domain in $\RR^d$ with $d\geq 3$. We show that if $D$ contains an unbounded uniform domain, then the symmetric reflecting Brownian motion (RBM) on $\overline D$ is transient.
Chen, Zhen-Qing, Fukushima, Masatoshi
core   +5 more sources

ADITU: A mesh-free formulation for the solution of Helmholtz equation in bounded and unbounded domains

open access: yesSoftwareX, 2022
This work describes a mesh-free collocation formulation for the acoustic fluid–fluid coupling among non-homogeneous bounded and unbounded fluid domains.
Gorka Garate   +2 more
doaj   +1 more source

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