Results 131 to 140 of about 6,505 (230)

Sub and supersolutions, invariant cones and multiplicity results for p-Laplace equations [PDF]

open access: green, 2012
Maria-Magdalena Boureanu   +2 more
openalex   +1 more source

Existence and nonexistence results for quasilinear semipositone Dirichlet problems

open access: yesElectronic Journal of Differential Equations, 2009
We use the sub/supersolution method to analyze a semipositone Dirichlet problem for the p-Laplacian. To find a positive solution, we therefore focus on a related problem that produces positive subsolutions.
Matthew Rudd
doaj  

Existence of positive solutions for fractional Laplacian equations: theory and numerical experiments

open access: yesElectronic Journal of Differential Equations, 2020
We consider a class of nonlinear fractional Laplacian problems satisfying the homogeneous Dirichlet condition on the exterior of a bounded domain. We prove the existence of positive weak solution for classes of sublinear nonlinearities including ...
Maya Chhetri   +2 more
doaj  

Critical parameter equations for degenerate parabolic equations coupled via nonlinear boundary flux

open access: yesBoundary Value Problems, 2011
This paper deals with the critical parameter equations for a degenerate parabolic system coupled via nonlinear boundary flux. By constructing the self-similar supersolution and subsolution, we obtain the critical global existence parameter equation.
Xu Si, Song Zifen
doaj  

On the sub-supersolution method for \(p(x)\)-Laplacian equations

open access: yesJournal of Mathematical Analysis and Applications, 2007
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

Existence and comparison results for variational-hemivariational inequalities

open access: yesJournal of Inequalities and Applications, 2005
We consider a prototype of quasilinear elliptic variational-hemivariational inequalities involving the indicator function of some closed convex set and a locally Lipschitz functional.
Carl S
doaj  

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