Results 91 to 100 of about 22,884,854 (275)

Critical Neumann problem for nonlinear elliptic systems in exterior domains

open access: yesElectronic Journal of Differential Equations, 2008
In this paper, we investigate the Neumann problem for a critical elliptic system in exterior domains. Assuming that the coefficient $Q(x)$ is a positive smooth function and $lambda$, $mugeq0$ are parameters, we examine the common effect of the mean ...
Jianfu Yang, Shengbing Deng
doaj  

A note on the variational structure of an elliptic system involving critical Sobolev exponent

open access: yesJournal of Applied Mathematics, 2003
We consider an elliptic system involving critical growth conditions. We develop a technique of variational methods for elliptic systems. Using the well-known results of maximum principle for systems developed by Fleckinger et al.
Mario Zuluaga
doaj   +1 more source

On a Class of Reversible Elliptic Systems

open access: yesAdvanced Nonlinear Studies, 2012
Abstract For a semilinear elliptic system of PDE’s which is spatially reversible, we establish the existence of solutions in C2(ℝ2 × Tn−2, ℝm) that are heteroclinic in x2 between a pair of solutions in C2(ℝ × Tn−1, ℝm) that are each heteroclinic in x1. The proof uses minimization arguments.
openaire   +2 more sources

Quasilinear elliptic systems [PDF]

open access: yesAnnali di Matematica Pura ed Applicata (1923 -), 1978
The quasilinear elliptic system $$\sum\limits_{l{\text{ = 1}}}^n {\frac{\partial }{{\partial x_l }}\left\{ {\sum\limits_{j = 1}^N {\sum\limits_{m = 1}^n {C_{ij}^{lm} [x,U]\frac{{\partial U^j }}{{\partial x_m }} + B_i^l [x,U]} } } \right\} + F_i [x,U] = 0} $$
openaire   +1 more source

Maximum principle and existence results for nonlinear cooperative systems on a bounded domain

open access: yesElectronic Journal of Differential Equations, 2011
In this work we give necessary and sufficient conditions for having a maximum principle for cooperative elliptic systems involving p-Laplacian operator on a bounded domain.
Liamidi Leadi, Aboubacar Marcos
doaj  

Nonexistence results of nonnegative solutions of elliptic equations and systems on the Heisenberg group

open access: yesAIMS Mathematics
This paper establishes sharp nonexistence criteria for nonnegative solutions to a class of quasilinear elliptic inequalities and divergence-type systems in the subelliptic framework of the Heisenberg group $ H^n $.
Wei Shi
doaj   +1 more source

Multiplicity of Positive Solutions for Semilinear Elliptic Systems

open access: yesAbstract and Applied Analysis, 2013
We study the effect of the coefficient of the critical nonlinearity on the number of positive solutions for semilinear elliptic systems. Under suitable assumptions for , , and , we should prove that for sufficiently small , there are at least positive ...
Tsing-San Hsu
doaj   +1 more source

Maximum principle and existence results for elliptic systems on R^N

open access: yesElectronic Journal of Differential Equations, 2010
In this work we give necessary and sufficient conditions for having a maximum principle for cooperative elliptic systems involving p-Laplacian operator on the whole $mathbb{R}^{N}$. This principle is then used to yield solvability for the cooperative
Liamidi Leadi, Aboubacar Marcos
doaj  

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