Results 81 to 90 of about 691 (101)

The Multiplicity Problem for Periodic Orbits of Magnetic Flows on the 2-Sphere

Advanced Nonlinear Studies, 2017
We consider magnetic Tonelli Hamiltonian systems on the cotangent bundle of the 2-sphere, where the magnetic form is not necessarily exact. It is known that, on very low and on high energy levels, these systems may have only finitely many periodic orbits.
Abbondandolo Alberto, Asselle Luca, Benedetti Gabriele, Mazzucchelli Marco, Taimanov Iskander A.   +4 more
doaj   +1 more source

Homoclinics for strongly indefinite almost periodic second order Hamiltonian systems

Advances in Nonlinear Analysis, 2017
Under certain assumptions, we prove the existence of homoclinic solutions for almost periodic second order Hamiltonian systems in the strongly indefinite case.
Pankov Alexander
doaj   +1 more source

Existence and Multiplicity of Solutions for Resonant (p,2)-Equations

Advanced Nonlinear Studies, 2018
We consider Dirichlet elliptic equations driven by the sum of a p-Laplacian ...
Papageorgiou Nikolaos S., Rădulescu Vicenţiu D., Repovš Dušan D.   +2 more
doaj   +1 more source

Infinitely Many Solutions for a Non-homogeneous Differential Inclusion with Lack of Compactness

Advanced Nonlinear Studies, 2019
In this paper, we consider the following class of differential inclusion problems in ℝN{\mathbb{R}^{N}} involving the p⁢(x){p(x)}-Laplacian:
Ge Bin, Rădulescu Vicenţiu D.
doaj   +1 more source

Concentrating solutions for double critical fractional Schrödinger-Poisson system with p-Laplacian in ℝ3

Advances in Nonlinear Analysis
In this article, we consider the following double critical fractional Schrödinger-Poisson system involving p-Laplacian in R3{{\mathbb{R}}}^{3} of the form: εsp(−Δ)psu+V(x)∣u∣p−2u−ϕ∣u∣ps♯−2u=∣u∣ps*−2u+f(u)inR3,εsp(−Δ)sϕ=∣u∣ps♯inR3,\left\{\begin{array}{l}{\
Liang Shuaishuai, Song Yueqiang, Shi Shaoyun   +2 more
doaj   +1 more source

An Improved Fountain Theorem and Its Application

Advanced Nonlinear Studies, 2017
The main aim of the paper is to prove a fountain theorem without assuming the τ-upper semi-continuity condition on the variational functional. Using this improved fountain theorem, we may deal with more general strongly indefinite elliptic problems with ...
Gu Long-Jiang, Zhou Huan-Song
doaj   +1 more source

A multiplicity result for a nonlinear degenerate problem arising in the theory of electrorheological fluids

Proceedings of the Royal Society A, 2011
M. Mihăilescu, V. Rădulescu
semanticscholar   +1 more source

Critical configurations of planar robot arms

Open Mathematics, 2013
Khimshiashvili Giorgi, Panina Gaiane, Siersma Dirk, Zhukova Alena   +3 more
doaj   +1 more source

Topological tools for the prescribed scalar curvature problem on S n

Open Mathematics, 2014
Abuzaid Dina, Ben Mahmoud Randa, Chtioui Hichem, Rigane Afef   +3 more
doaj   +1 more source

Variational analysis for Dirichlet impulsive differential equations with oscillatory nonlinearity

, 2013
G. Afrouzi, A. Hadjian, Vicentiu D. Rădulescu   +2 more
semanticscholar   +1 more source