Results 291 to 300 of about 3,320,198 (344)

On defining functions and cores for unbounded domains I

Mathematische Zeitschrift, 2017
Abstract We extend the authors’ results on existence of global defining functions to a number of different settings. In particular, we relax the assumption on strict pseudoconvexity of the domain to strict
T. Harz, N. Shcherbina, G. Tomassini
semanticscholar   +3 more sources

Noncoercive nonlinear Dirichlet problems in unbounded domains

Nonlinear Analysis: Theory, Methods & Applications, 2020
In this paper we study noncoercive nonlinear Dirichlet problems with discontinuous coefficients in unbounded domains.
Emilia Anna Alfano, Sara Monsurrõ
exaly   +2 more sources

Invariant measures of fractional stochastic delay reaction–diffusion equations on unbounded domains

Nonlinearity, 2021
In this paper, existence of invariant measure is mainly investigated for a fractional stochastic delay reaction–diffusion equation defined on unbounded domains.
Zhang Chen, Bixiang Wang
semanticscholar   +1 more source

Limit measures and ergodicity of fractional stochastic reaction–diffusion equations on unbounded domains

Stochastics and Dynamics, 2021
This paper deals with invariant measures of fractional stochastic reaction–diffusion equations on unbounded domains with locally Lipschitz continuous drift and diffusion terms.
Zhang Chen, Bixiang Wang
semanticscholar   +1 more source

Instability results for the damped wave equation in unbounded domains

Journal of Differential Equations, 2005
We extend some previous results for the damped wave equation in bounded domains in Rd to the unbounded case. In particular, we show that if the damping term is of the form αa with bounded a taking on negative values on a set of positive measure, then ...
Pedro Freitas
exaly   +2 more sources

Asymptotically autonomous robustness of random attractors for a class of weakly dissipative stochastic wave equations on unbounded domains

Proceedings of the Royal Society of Edinburgh: Section A Mathematics, 2020
This paper is concerned with the asymptotic behaviour of solutions to a class of non-autonomous stochastic nonlinear wave equations with dispersive and viscosity dissipative terms driven by operator-type noise defined on the entire space $\mathbb {R}^n$.
T. Caraballo, B. Guo, N. Tuan, Renhai Wang   +3 more
semanticscholar   +1 more source

A Spectral Method for Unbounded Domains

Journal of Computational Physics, 1997
The spectral method for an unbounded domain is developed and presented. For the expansion in the radial direction of polar coordinates \((r,\varphi)\) or \((r, \varphi, z)\) rational basis functions which are algebraically mapped Legendre functions are used.
Matsushima, T., Marcus, P. S.
openaire   +2 more sources

Exponential Jacobi-Galerkin method and its applications to multidimensional problems in unbounded domains

, 2020
Modeling an infinite domain arises while simulating physical applications frequently. It is like attempting to model the effects and properties of the ocean in a bucket.
Magda Hammad, R. Hafez, Youssri Hassan Youssri, E. H. Doha   +3 more
semanticscholar   +1 more source

Noncoercive elliptic equations with discontinuous coefficients in unbounded domains [PDF]

Nonlinear Analysis: Theory, Methods & Applications, 2017
In this paper we study Dirichlet problems for noncoercive linear elliptic equations with discontinuous coefficients in unbounded domains.
Sara Monsurrõ, Maria Transirico
exaly   +2 more sources

Matching pursuit with unbounded parameter domains

Advances in Computational Mathematics, 2023
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Wei Qu, Yanbo Wang, Xiaoyun Sun
openaire   +2 more sources