Results 1 to 10 of about 181 (122)

Bifurcation of Gradient Mappings Possessing the Palais-Smale Condition [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2011
This paper considers bifurcation at the principal eigenvalue of a class of gradient operators which possess the Palais-Smale condition. The existence of the bifurcation branch and the asymptotic nature of the bifurcation is verified by using the ...
Elliot Tonkes
doaj   +2 more sources

A Generalized Palais-Smale Condition in the Fr\'{e}chet space setting [PDF]

open access: yesPracì Mìžnarodnogo Geometričnogo Centru, 2018
The Palais-Smale condition was introduced by Palais and Smale in the mid-sixties and applied to an extension of Morse theory to infinite dimensional Hilbert spaces.
Kaveh Eftekharinasab
doaj   +4 more sources

ON THE PALAIS-SMALE CONDITION FOR NONDIFFERENTIABLE FUNCTIONALS

open access: yesTaiwanese Journal of Mathematics, 2000
In this paper the author studies the relations between some extensions to nonsmooth functionals of the classical Palais-Smale (PS) compactness condition for smooth functionals. In particular the relations between some results of K. C. Chang and other results by Costa and Goncalves are presented.
Hong-Kun Xu
exaly   +3 more sources

On a functional satisfying a weak Palais-Smale condition

open access: yesDiscrete and Continuous Dynamical Systems, 2014
In this paper we study a quasilinear elliptic problem whose functional satisfies a weak version of the well known Palais-Smale condition. An existence result is proved under general assumptions on the nonlinearities.
Antonio Azzollini
exaly   +5 more sources

Global inversion via the Palais-Smale condition

open access: yesDiscrete and Continuous Dynamical Systems, 2002
The paper concerns the problem when a local diffeomorphism \(f:\mathbb R^n\to\mathbb R^n\) is bijective. Let \(g\) be a complete Riemannian metric on \(\mathbb R^n\) and \(h:\mathbb R^n\to\mathbb R\) be a smooth function. Let \(\Delta ^{(g)}h\) be its gradient relative to \(g\) i.e. \(g_x(\Delta ^{(g)}h,w)=dh_x(w)\) for all \(w\in \mathbb R^n\).
Scott Nollet, Frederico Xavier
exaly   +4 more sources

Multiple critical points theorems without the Palais–Smale condition

open access: yesJournal of Mathematical Analysis and Applications, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Gabriele Bonanno
exaly   +5 more sources

The Solvability of Concave-Convex Quasilinear Elliptic Systems Involving $p$-Laplacian and Critical Sobolev Exponent [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2018
In this work, we study the existence of non-trivial multiple solutions for a class of quasilinear elliptic systems equipped with concave-convex nonlinearities and critical growth terms in bounded domains.
Somayeh Khademloo, Saeed Khanjany Ghazi
doaj   +1 more source

On variational nonlinear equations with monotone operators

open access: yesAdvances in Nonlinear Analysis, 2020
Using monotonicity methods and some variational argument we consider nonlinear problems which involve monotone potential mappings satisfying condition (S) and their strongly continuous perturbations.
Galewski Marek
doaj   +1 more source

Periodic traveling waves in Fermi–Pasta–Ulam type systems with nonlocal interaction on 2d-lattice

open access: yesМатематичні Студії, 2023
The paper deals with the Fermi--Pasta--Ulam type systems that describe an infinite systems of nonlinearly  coupled particles with nonlocal interaction on a two dimensional lattice.
S. M. Bak, G. M. Kovtonyuk
doaj   +1 more source

Vitali convergence theorem and Palais-Smale condition

open access: yesDifferential and Integral Equations, 2002
Let \(N\geq 2\) and ...
Chen, Min-Chun   +2 more
openaire   +3 more sources

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