Results 21 to 30 of about 9,842 (165)

Nonsmooth critical point theory and nonlinear elliptic equations at resonance [PDF]

open access: yesKodai Mathematical Journal, 2000
AbstractIn this paper we complete two tasks. First we extend the nonsmooth critical point theory of Chang to the case where the energy functional satisfies only the weaker nonsmooth Cerami condition and we also relax the boundary conditions. Then we study semilinear and quasilinear equations (involving the p-Laplacian).
Kourogenis, Nikolaos C.   +1 more
openaire   +4 more sources

Multiplicity of nontrivial solutions for elliptic equations with nonsmooth potential and resonance at higher eigenvalues [PDF]

open access: yes, 2006
We consider a semilinear elliptic equation with a nonsmooth, locally \hbox{Lipschitz} potential function (hemivariational inequality). Our hypotheses permit double resonance at infinity and at zero (double-double resonance situation).
Gasi'nski, Leszek   +2 more
core   +1 more source

Multiplicity of Solutions for a Modified Schrödinger-Kirchhoff-Type Equation in  RN

open access: yesDiscrete Dynamics in Nature and Society, 2015
We study the existence of infinitely many solutions for a class of modified Schrödinger-Kirchhoff-type equations by the dual method and the nonsmooth critical point theory.
Xiumei He
doaj   +1 more source

Existence and concentration of positive solutions for a class of discontinuous quasilinear Schrödinger problems in R N $\mathbb{R}^{N}$

open access: yesBoundary Value Problems, 2020
In this paper, a class of quasilinear Schrödinger equations with discontinuous nonlinearity is considered. After changing variables, by using nonsmooth critical point theory, we obtain the existence and concentration of positive solutions for this ...
Ziqing Yuan
doaj   +1 more source

Positive entire solutions of quasilinear elliptic problems via nonsmooth critical point theory [PDF]

open access: yesTopological Methods in Nonlinear Analysis, 1996
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
CONTI, MONICA, GAZZOLA, FILIPPO
openaire   +4 more sources

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

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   +1 more source

Multiple positive solutions for a logarithmic Schrödinger–Poisson system with singular nonelinearity

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2021
In this article, we devote ourselves to investigate the following logarithmic Schrödinger–Poisson systems with singular nonlinearity \begin{equation*} \begin{cases} -\Delta u+\phi u= |u|^{p-2}u\log|u|+\frac{\lambda}{u^\gamma}, &\rm \mathrm{in ...
Linyan Peng   +4 more
doaj   +1 more source

Multiple orthogonal geodesic chords in nonconvex Riemannian disks using obstacles [PDF]

open access: yes, 2018
We use nonsmooth critical point theory and the theory of geodesics with obstacle to show a multiplicity result about orthogonal geodesic chords in a Riemannian manifold (with boundary) which is homeomorphic to an N-disk. This applies to brake orbits in a
Giambò, Roberto   +2 more
core   +2 more sources

Multiple positive solutions for a fractional Kirchhoff type equation with logarithmic and singular nonlinearities

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2023
In this paper, we study the following fractional Kirchhoff type equation \begin{equation*} \begin{cases} \left(a+b\displaystyle\int_{\mathbb{R}^N}\int_{\mathbb{R}^N}\frac{|u(x)-u(y)|^p}{|x-y|^{N+ps}}dxdy\right)(-\Delta)_p^su=|u|^{q-2}u\ln |u|^2+\frac ...
Jun Lei
doaj   +1 more source

Nonlinear Periodic Systems with the p-Laplacian: Existence and Multiplicity Results

open access: yesAbstract and Applied Analysis, 2007
We study second-order nonlinear periodic systems driven by the vector p-Laplacian with a nonsmooth, locally Lipschitz potential function. Under minimal and natural hypotheses on the potential and using variational methods based on the nonsmooth critical ...
Francesca Papalini
doaj   +1 more source

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