Results 91 to 100 of about 218 (139)

Bifurcation theory and the type numbers of marston morse. [PDF]

Proc Natl Acad Sci U S A, 1972
Berger MS.
europepmc   +1 more source

Palais-Smale Condition, Index Pairs and Critical Point Theory

, 2000
This paper is concerned with index pairs in the sense of Conley index theory for flows relative to pseudo-gradient vector fields for $C^1$-functions satisfying Palais-Smale condition. We prove a deformation theorem for such index pairs to obtain a Lusternik-Schnirelmann type result in Conley index theory.
openaire   +2 more sources

An infinite dimensional Saddle Point Theorem and application. [PDF]

Bound Value Probl
Colin F, Songo A.
europepmc   +1 more source

Nondegenerate real-valued differentiable functions. [PDF]

Proc Natl Acad Sci U S A, 1967
Morse M.
europepmc   +1 more source

Existence of nontrival <i>n</i>-harmonic maps via min-max methods. [PDF]

Calc Var Partial Differ Equ
Martino D, Mazowiecka K, Schikorra A.
europepmc   +1 more source

Energy identity and no neck property for ε -harmonic and α -harmonic maps into homogeneous target manifolds. [PDF]

Calc Var Partial Differ Equ
Bayer C, Roberts AM.
europepmc   +1 more source

Existence of nontrivial solutions for Schrodinger-Kirchhoff equations with indefinite potentials

Electronic Journal of Differential Equations, 2023
Shuai Jiang, Li-Feng Yin
doaj  

On the Palais-Smale Condition for Nondifferentiable Functionals

Taiwanese 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