Results 11 to 20 of about 210 (137)

Constant Sign and Nodal Solutions for Problems with the p-Laplacian and a Nonsmooth Potential Using Variational Techniques [PDF]

open access: yesBoundary Value Problems, 2009
We consider a nonlinear elliptic equation driven by the p-Laplacian with a nonsmooth potential (hemivariational inequality) and Dirichlet boundary condition.
Ravi P. Agarwal   +3 more
doaj   +2 more sources

Ground state sign-changing solutions for semilinear Dirichlet problems

open access: yesBoundary Value Problems, 2018
In the present paper, we consider the existence of ground state sign-changing solutions for the semilinear Dirichlet problem 0.1 {−△u+λu=f(x,u),x∈Ω;u=0,x∈∂Ω, $$ \left \{ \textstyle\begin{array}{l@{\quad}l} -\triangle u+\lambda u=f(x, u), & \hbox{$x\in ...
Xiaoyan Lin, Xianhua Tang
doaj   +2 more sources

Resonant Anisotropic (p,q)-Equations

open access: yesMathematics, 2020
We consider an anisotropic Dirichlet problem which is driven by the (p(z),q(z))-Laplacian (that is, the sum of a p(z)-Laplacian and a q(z)-Laplacian), The reaction (source) term, is a Carathéodory function which asymptotically as x±∞ can be resonant with
Leszek Gasiński   +1 more
doaj   +2 more sources

Constant Sign and Nodal Solutions for Problems with the -Laplacian and a Nonsmooth Potential Using Variational Techniques

open access: yesBoundary Value Problems, 2009
We consider a nonlinear elliptic equation driven by the -Laplacian with a nonsmooth potential (hemivariational inequality) and Dirichlet boundary condition.
Filippakis MichaelE   +3 more
doaj   +1 more source

Nodal and constant sign solutions for singular elliptic problems [PDF]

open access: yes, 2023
We establish the existence of multiple solutions for singular quasilinear elliptic problems with a precise sign information: two opposite constant sign solutions and a nodal solution.
Motreanu, Dumitru, Moussaoui, Abdelkrim
core   +1 more source

Multiplicity of 2-nodal solutions the Yamabe equation [PDF]

open access: yes, 2023
Given any closed Riemannian manifold $(M, g)$, we use the gradient flow method and Sign-Changing Critical Point Theory to prove multiplicity results for 2-nodal solutions of a subcritical Yamabe type equation on $(M, g)$.
DÁvila, Jorge   +2 more
core   +1 more source

Constant sign and nodal solutions for resonant double phase problems

open access: yes, 2023
We consider a double phase Dirichlet problem with a reaction which asymptotically as \(x \rightarrow \pm \infty\) can be resonant with respect to the principle eigenvalue \(\hat{\lambda}_{1}>0\) of the Dirichlet weighted \(p\)-Laplacian.
Papageorgiou, Nikolaos S.   +2 more
core   +1 more source

Nodal solutions with synchronous sign changing components and Constant sign solutions for singular Gierer-Meinhardt type system

open access: yes, 2023
We establish the existence of three solutions for singular semilinear elliptic system, two of which are of opposite constant-sign. Under a strong singularity effect, the third solution is nodal with synchronous sign components.
Moussaoui, Abdelkrim
core   +1 more source

Solutions with sign information for nonlinear Robin problems with no growth restriction on reaction [PDF]

open access: yes, 2021
We consider a parametric nonlinear Robin problem driven by a nonhomogeneous differential operator. The reaction is a Carathéodory function which is only locally defined (that is, the hypotheses concern only its behaviour near zero).
Vetro F., Papageorgiou N. S., Vetro C.
core   +1 more source

Constant sign and nodal solutions for nonlinear elliptic equations with combined nonlinearities [PDF]

open access: yes, 2015
We study a parametric nonlinear Dirichlet problem driven by a nonhomogeneous differential operator and with a reaction which is ”concave” (i.e., (p − 1)− sublinear) near zero and ”convex” (i.e., (p − 1)− superlinear) near ±1.
Aizicovici, S.   +2 more
core   +1 more source

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