Results 51 to 60 of about 279 (111)

Morse theory in the 1990s

open access: yes, 2002
Abstract Since the publication of Milnor’s book [47] in 1963, Morse theory has been a standard topic in the education of geometers and topologists. This book established such high standards for clarity of exposition and mathematical influence that it has been reprinted several times, and it is still the most popular introductory ...
openaire   +2 more sources

Towards a Morse theory on Banach spaces via ultrafunctions

open access: yesArab Journal of Mathematical Sciences, 2015
Morse Theory on Banach spaces would be a useful tool in nonlinear analysis but its development is hindered by many technical problems. In this paper we present an approach based on a new notion of generalized functions called “ultrafunctions” which ...
Vieri Benci, Isaia Nisoli
doaj   +1 more source

Prouhet-Thue-Morse sequence and atomic functions in applications of physics and techniques

open access: yesJournal of Measurement Science and Instrumentation, 2015
In present article a number of results are described in a systematic way concerning both signal and image processing problems with respect to atomic functions theory and Prouhet-Thue-Morse sequence.
Victor F Kravchenko   +2 more
doaj  

Morse theory on G-manifolds

open access: yesTopology and its Applications, 2002
The authors define the Morse polynomial for a \(G\)-equivariant Morse function \(f\) defined on \(M\), where \(G\) is a finite group acting semifreely on the compact manifold \(M\). If \(\text{codim} (M^G)\leq 2\) and if \(f\) is an equivariant Morse function on \(M\) such that \(f|_MG\) is also a Morse function, then they show that the Morse ...
Datta, Mahuya, Pandey, Neeta
openaire   +2 more sources

Multiple Closed Geodesics on Positively Curved Finsler Manifolds

open access: yesAdvanced Nonlinear Studies, 2019
In this paper, we prove that on every Finsler manifold (M,F){(M,F)} with reversibility λ and flag curvature K satisfying (λλ+1 ...
Wang Wei
doaj   +1 more source

Existence of nontrivial solutions for a class of biharmonic equations with singular potential in RN $\mathbb{R}^{N}$

open access: yesBoundary Value Problems, 2018
In this paper, we study a class of biharmonic equations with a singular potential in RN $\mathbb{R}^{N}$. Under appropriate assumptions on the nonlinearity, we establish some existence results via the Morse theory and variational methods.
Chengfang Zhou, Zigen Ouyang
doaj   +1 more source

Multiple solutions for an indefinite Kirchhoff-type equation with sign-changing potential

open access: yesElectronic Journal of Differential Equations, 2015
In this article, we study a Kirchhoff-type equation with sign-changing potential on an infinite domain. Using Morse theory and variational methods, we show the existence of two and of infinitely many nontrivial solutions.
Hongliang Liu, Haibo Chen
doaj  

Existence and multiplicity of solutions for a class of superlinear p-Laplacian equations

open access: yesAdvances in Nonlinear Analysis
In this work, we investigate a class of pp-Laplacian equations with the Dirichlet boundary condition. Under some new conditions, the existence and multiplicity of nontrivial solutions are proved by means of the variational methods.
Zhao Tai-Jin, Li Chun
doaj   +1 more source

Morse theory for complexes of groups

open access: yesJournal of Pure and Applied Algebra
31 pages, 6 ...
Yerolemou, N, Nanda, V
openaire   +3 more sources

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