Results 11 to 20 of about 9,842 (165)

Multiple solutions to a class of inclusion problems with operator involving p(x)-Laplacian [PDF]

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2013
In this paper, we prove the existence of at least two nontrivial solutions for a nonlinear elliptic problem involving p(x)-Laplacian-like operator and nonsmooth potentials.
Qing-Mei Zhou
doaj   +5 more sources

Periodic Solutions for Semilinear Fourth-Order Differential Inclusions via Nonsmooth Critical Point Theory [PDF]

open access: yesJournal of Function Spaces, 2014
Three periodic solutions with prescribed wavelength for a class of semilinear fourth-order differential inclusions are obtained by using a nonsmooth version critical point theorem. Some results of previous related literature are extended.
Bian-Xia Yang, Hong-Rui Sun
doaj   +3 more sources

Perturbations of critical values in nonsmooth critical point theory [PDF]

open access: yes, 1996
* Supported by Ministero dell’Università e della Ricerca Scientifica e Tecnologica (40% – 1993). ** Supported by Ministero dell’Università e della Ricerca Scientifica e Tecnologica (40% – 1993).The perturbation of critical values for continuous ...
Degiovanni, M., Lancelotti, Sergio
core   +5 more sources

Three Solutions for Fourth-Order Impulsive Differential Inclusions via Nonsmooth Critical Point Theory

open access: yesJournal of Function Spaces, 2018
An existence of at least three solutions for a fourth-order impulsive differential inclusion will be obtained by applying a nonsmooth version of a three-critical-point theorem. Our results generalize and improve some known results.
Dongdong Gao, Jianli Li
doaj   +2 more sources

On a global implicit function theorem for locally Lipschitz maps via nonsmooth critical point theory [PDF]

open access: yesQuaestiones Mathematicae, 2017
We prove a non-smooth generalization of the global implicit function theorem. More precisely we use the non-smooth local implicit function theorem and the non-smooth critical point theory in order to prove a non-smooth global implicit function theorem ...
Galewski, M., Rădulescu, M.
core   +3 more sources

The Dirichlet problem for discontinuous perturbations of the mean curvature operator in Minkowski space [PDF]

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2015
Using the critical point theory for convex, lower semicontinuous perturbations of locally Lipschitz functionals, we prove the solvability of the discontinuous Dirichlet problem involving the operator $u\mapsto\mbox{div} \Big(\frac{\nabla u}{\sqrt{1 ...
C. Bereanu   +2 more
doaj   +3 more sources

A Note on Coercivity of Lower Semicontinuous Functions and Nonsmooth Critical Point Theory [PDF]

open access: yes, 1996
The first motivation for this note is to obtain a general version of the following result: let E be a Banach space and f : E → R be a differentiable function, bounded below and satisfying the Palais-Smale condition; then, f is coercive, i.e., f(x) goes ...
Corvellec, J.
core   +3 more sources

On Nonsmooth Global Implicit Function Theorems for Locally Lipschitz Functions from Banach Spaces to Euclidean Spaces

open access: yesAbstract and Applied Analysis, 2022
In this paper, we establish a generalization of the Galewski-Rădulescu nonsmooth global implicit function theorem to locally Lipschitz functions defined from infinite dimensional Banach spaces into Euclidean spaces.
Guy Degla   +2 more
doaj   +1 more source

Positive Solutions for Multiparameter Semipositone Discrete Boundary Value Problems via Variational Method

open access: yesAdvances in Difference Equations, 2008
We study the existence, multiplicity, and nonexistence of positive solutions for multiparameter semipositone discrete boundary value problems by using nonsmooth critical point theory and subsuper solutions method.
Guo Zhiming, Yu Jianshe, Zhu Benshi
doaj   +2 more sources

Positive radial symmetric solutions for a class of elliptic problems with critical exponent and -1 growth

open access: yesAdvances in Nonlinear Analysis, 2021
In this paper, we consider a class of semilinear elliptic equation with critical exponent and -1 growth. By using the critical point theory for nonsmooth functionals, two positive solutions are obtained. Moreover, the symmetry and monotonicity properties
Lei Chun-Yu, Liao Jia-Feng
doaj   +1 more source

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