Results 31 to 40 of about 6,505 (230)

On the equivalence of stochastic completeness, Liouville and Khas'minskii condition in linear and nonlinear setting [PDF]

open access: yes, 2012
Set in Riemannian enviroment, the aim of this paper is to present and discuss some equivalent characterizations of the Liouville property relative to special operators, in some sense modeled after the p-Laplacian with potential. In particular, we discuss
Mari, Luciano, Valtorta, Daniele
core   +2 more sources

Free boundary problems for Tumor Growth: a Viscosity solutions approach [PDF]

open access: yes, 2015
The mathematical modeling of tumor growth leads to singular stiff pressure law limits for porous medium equations with a source term. Such asymptotic problems give rise to free boundaries, which, in the absence of active motion, are generalized Hele-Shaw
Alt   +14 more
core   +6 more sources

Equivalence of Viscosity and Weak Solutions for the $p(x)$-Laplacian [PDF]

open access: yes, 2010
We consider different notions of solutions to the $p(x)$-Laplace equation $-\div(\abs{Du(x)}^{p(x)-2}Du(x))=0$ with ...
Acerbi   +29 more
core   +3 more sources

Sobolev gradients of viscosity supersolutions

open access: yesNonlinear Differential Equations and Applications NoDEA, 2023
We investigate which elliptic PDEs that have the property that every viscosity supersolution is $W^{1,q}_{loc}(Ω)$, $Ω\subseteq\mathbb{R}^n$. The asymptotic cone of the operator's sublevel set seems to be essential. It turns out that much can be said if we know how this cone compares to the sublevel set of a certain minimal operator associated with the
openaire   +2 more sources

The Parabolic Infinite-Laplace Equation in Carnot groups [PDF]

open access: yes, 2014
By employing a Carnot parabolic maximum principle, we show existence-uniqueness of viscosity solutions to a class of equations modeled on the parabolic infinite Laplace equation in Carnot groups.
Bieske, Thomas, Martin, Erin
core   +2 more sources

Existence and asymptotic behavior of ground state solutions of semilinear elliptic system

open access: yesAdvances in Nonlinear Analysis, 2017
In this article, we take up the existence and the asymptotic behavior of entire bounded positive solutions to the following semilinear elliptic system:
Mâagli Habib   +2 more
doaj   +1 more source

Regularity of Supersolutions [PDF]

open access: yes, 2012
The regularity for the supersolutions of the Evolutionary p-Laplace Equation is considered. In particular,the equivalence of viscosity supersolutions and p-supercaloric functions (lower semicontinuous supersolutions defined via a comparison principle) is considered.
openaire   +2 more sources

Multiple solutions for a system involving an anisotropic variable exponent operator

open access: yesBoundary Value Problems, 2022
In this paper, the existence of a solution for an anisotropic variable exponent system is obtained and proved under general hypotheses. By considering additional conditions, it is proved a multiplicity result.
Leandro S. Tavares
doaj   +1 more source

A rigorous setting for the reinitialization of first order level set equations [PDF]

open access: yes, 2015
In this paper we set up a rigorous justification for the reinitialization algorithm. Using the theory of viscosity solutions, we propose a well-posed Hamilton-Jacobi equation with a parameter, which is derived from homogenization for a Hamiltonian ...
Hamamuki, Nao, Ntovoris, Eleftherios
core   +3 more sources

Combined effects in nonlinear singular elliptic problems in a bounded domain

open access: yesAdvances in Nonlinear Analysis, 2012
We establish an existence result of positive solutions to the following boundary value problem:
Chemmam Rym   +3 more
doaj   +1 more source

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