24,113 research outputs found
Multiple Positive solutions of a -Laplacian system with nonlinear BCs
Using the theory of fixed point index, we discuss existence, non-existence,
localization and multiplicity of positive solutions for a -Laplacian
system with nonlinear Robin and/or Dirichlet type boundary conditions. We give
an example to illustrate our theory.Comment: arXiv admin note: text overlap with arXiv:1408.017
Existence results to a nonlinear p(k)-Laplacian difference equation
In the present paper, by using variational method, the existence of
non-trivial solutions to an anisotropic discrete non-linear problem involving
p(k)-Laplacian operator with Dirichlet boundary condition is investigated. The
main technical tools applied here are the two local minimum theorems for
differentiable functionals given by Bonanno.Comment: The final version of this paper will be published in Journal of
Difference Equations and Applications in 201
Multiple solutions for the laplace operator with critical growth
The aim of this paper is to extend previous results regarding the
multiplicity of solutions for quasilinear elliptic problems with critical
growth to the variable exponent case.
We prove, in the spirit of \cite{DPFBS}, the existence of at least three
nontrivial solutions to the following quasilinear elliptic equation
in a smooth bounded domain
of with homogeneous Dirichlet boundary conditions on
. We assume that , where
is the critical Sobolev exponent for variable exponents
and is the
laplacian. The proof is based on variational arguments and the extension
of concentration compactness method for variable exponent spaces
Existence of three solutions for a first-order problem with nonlinear non-local boundary conditions
Conditions for the existence of at least three positive solutions to the
nonlinear first-order problem with a nonlinear nonlocal boundary condition
given by
&& y'(t) - p(t)y(t) = \sum_{i=1}^m f_i\big(t,y(t)\big), \quad t\in[0,1],
&& \lambda y(0) = y(1) + \sum_{j=1}^n \Phi_j(\tau_j,y(\tau_j)), \quad
\tau_j\in[0,1], are discussed, for sufficiently large . The
Leggett-Williams fixed point theorem is utilized.Comment: outline, 6 page
The p-Laplace equation in domains with multiple crack section via pencil operators
The p-Laplace equation
\n \cdot (|\n u|^n \n u)=0 \whereA n>0, in a bounded domain \O \subset
\re^2, with inhomogeneous Dirichlet conditions on the smooth boundary \p \O
is considered. In addition, there is a finite collection of curves
\Gamma = \Gamma_1\cup...\cup\Gamma_m \subset \O, \quad \{on which we assume
homogeneous Dirichlet boundary conditions} \quad u=0, modeling a multiple
crack formation, focusing at the origin 0 \in \O. This makes the above
quasilinear elliptic problem overdetermined. Possible types of the behaviour of
solution at the tip 0 of such admissible multiple cracks, being a
"singularity" point, are described, on the basis of blow-up scaling techniques
and a "nonlinear eigenvalue problem". Typical types of admissible cracks are
shown to be governed by nodal sets of a countable family of nonlinear
eigenfunctions, which are obtained via branching from harmonic polynomials that
occur for . Using a combination of analytic and numerical methods,
saddle-node bifurcations in are shown to occur for those nonlinear
eigenvalues/eigenfunctions.Comment: arXiv admin note: substantial text overlap with arXiv:1310.065
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