Results 71 to 80 of about 371 (139)

A Liouville theorem for a class of superlinear elliptic equations on cones

open access: yes, 2002
We give sufficient conditions for non-existence of positive solutions of the equation Δu + a(x)u + b(x)up = 0 on a cone of Rn We further analyze the existence of positive solutions in the radial, subcritical case, and show that under suitable conditions ...
Marco Rigoli   +3 more
core   +1 more source

Global W1,p(·) estimate for renormalized solutions of quasilinear equations with measure data on Reifenberg domains

open access: yesAdvances in Nonlinear Analysis, 2018
In this paper, we prove the gradient estimate for renormalized solutions to quasilinear elliptic equations with measure data on variable exponent Lebesgue spaces with BMO coefficients in a Reifenberg flat domain.
Bui The Anh
doaj   +1 more source

Constant sign and nodal solutions for superlinear (p, q)–equations with indefinite potential and a concave boundary term

open access: yesAdvances in Nonlinear Analysis, 2020
We consider a nonlinear elliptic equation driven by the (p, q)–Laplacian plus an indefinite potential. The reaction is (p − 1)–superlinear and the boundary term is parametric and concave.
Papageorgiou Nikolaos S., Zhang Youpei
doaj   +1 more source

Eigenvalues for a class of singular problems involving p(x)-Biharmonic operator and q(x)-Hardy potential

open access: yesAdvances in Nonlinear Analysis, 2019
In this paper, we consider the nonlinear eigenvalue problem:
Khalil Abdelouahed El   +3 more
doaj   +1 more source

HARDY-SOBOLEV INEQUALITIES AND HYPERBOLIC SYMMETRY

open access: yes, 2008
. — We discuss uniqueness and nondegeneracy of extremals for some weighted Sobolev inequalities and give some applications to Grushin and scalar curvature type equations. The main theme is hyperbolic symmetry.
SANDEEP KUNNATH   +3 more
core  

Existence results for nonlinear anisotropic elliptic partial differential equations with variable exponents [PDF]

open access: yes
    The focus of this paper will be on studying the existence of solutions in the sense of distribution, for a class of nonlinear partial differential equations defined by a variable exponent anisotropic elliptic operator with a growth condition given by
NACERI, Mokhtar
core   +1 more source

© Hindawi Publishing Corp. UNIQUENESS AND RADIAL SYMMETRY FOR AN INVERSE ELLIPTIC EQUATION

open access: yes, 2002
We consider an inverse rearrangement semilinear partial differential equation in a 2-dimensional ball and show that it has a unique maximizing energy solution. The solution represents a confined steady flow containing a vortex and passing over a seamount.
M. H. Mehrabi, B. Emamizadeh
core  

Some numerical results of a boundary value problem with nonlinear terms

open access: yes, 2020
In this work we consider numerical positive solutions of the equation −Δu = λf (u) with Dirichlet boundary condition in a bounded domain Ω, where λ > 0 and f (u) is a superlinear function of u.
G A Afrouzi, S Khademloo
core  

Existence and multiplicity of solutions for a new p(x)-Kirchhoff equation

open access: yesAdvances in Nonlinear Analysis
This article is devoted to study a class of new p(x)p\left(x)-Kirchhoff equation. By means of perturbation technique, variational method, and the method invariant sets for the descending flow, the existence and multiplicity of solutions to this problem ...
Chu Changmu, Liu Jiaquan
doaj   +1 more source

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