Results 11 to 20 of about 3,771,122 (391)

Maximum principles, Liouville-type theorems and symmetry results for a general class of quasilinear anisotropic equations

open access: yesAdvances in Nonlinear Analysis, 2016
This paper is concerned with a general class of quasilinear anisotropic equations. We first derive some maximum principles for two appropriate P-functions, in the sense of Payne (see the book of Sperb [18]).
Barbu Luminita, Enache Cristian
doaj   +2 more sources

Viscoacoustic anisotropic wave equations [PDF]

open access: yesSEG Technical Program Expanded Abstracts 2019, 2019
The wave equation plays a central role in seismic modeling, processing, imaging and inversion. Incorporating attenuation anisotropy into the acoustic anisotropic wave equations provides a choice for acoustic forward and inverse modeling in attenuating anisotropic media.
Qi Hao, Tariq Alkhalifah
openaire   +5 more sources

A Variational Approach to Perturbed Discrete Anisotropic Equations

open access: yesAbstract and Applied Analysis, 2016
We continue the study of discrete anisotropic equations and we will provide new multiplicity results of the solutions for a discrete anisotropic equation.
Amjad Salari   +3 more
doaj   +2 more sources

An Existence Result for Discrete Anisotropic Equations [PDF]

open access: yesTaiwanese Journal of Mathematics, 2018
A critical point result is exploited in order to prove that a class of discrete anisotropic boundary value problems possesses at least one solution under an asymptotical behaviour of the potential of the nonlinear term at zero. Some recent results are extended and improved. Some examples are presented to demonstrate the applications of our main results.
Heidarkhani, Shapour   +2 more
openaire   +3 more sources

On sequences of solutions for discrete anisotropic equations [PDF]

open access: yesExpositiones Mathematicae, 2014
Taking advantage of a recent critical point theorem, the existence of infinitely many solutions for an anisotropic problem with a parameter is established. More precisely, a concrete interval of positive parameters, for which the treated problem admits infinitely many solutions, is determined without symmetry assumptions on the nonlinear data. Our goal
Molica Bisci G, Repovs D
openaire   +5 more sources

Anisotropic equations: Uniqueness and existence results

open access: yesDifferential and Integral Equations, 2008
We study uniqueness of weak solutions for elliptic equations of the following type \[ -\partial_{x_{i}}\left( a_{i}(x,u)\left\vert \partial_{x_{i}}u\right\vert ^{p_{i}-2}\partial_{x_{i}}u\right) +b(x,u) =f(x), \] in a bounded domain $\Omega\subset{\mathbb{R}}^{n}$ with Lipschitz continuous boundary $\Gamma=\partial\Omega$.
Antontsev, Stanislav, Chipot, Michel
openaire   +4 more sources

Existence and uniqueness for nonlinear anisotropic elliptic equations [PDF]

open access: yesarXiv, 2013
We study the existence and uniqueness for weak solutions to some classes of anisotropic elliptic Dirichlet problems with data belonging to the natural dual space.
R. D. Nardo, F. Feo
arxiv   +2 more sources

Anisotropic equations in $L^1$

open access: yesDifferential and Integral Equations, 1996
L. BOCCARDO   +2 more
openaire   +4 more sources

Anisotropic fast diffusion equations

open access: yesNonlinear Analysis, 2023
62 pages. Typos corrected, references added, text provided with very detailed proofs.
Feo F., Vázquez J. L., Volzone B.
openaire   +3 more sources

On some nonlinear anisotropic elliptic equations in anisotropic Orlicz space [PDF]

open access: yesArab Journal of Mathematical Sciences, 2023
Purpose – In the present paper, the authors will discuss the solvability of a class of nonlinear anisotropic elliptic problems (P), with the presence of a lower-order term and a non-polynomial growth which does not satisfy any sign condition which is ...
Omar Benslimane   +2 more
doaj   +1 more source

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