Results 111 to 120 of about 623 (125)

Addendum to Higher order stroboscopic averaged functions: a general relationship with Melnikov functions [PDF]

arXiv
This addendum presents a relevant stronger consequence of the main theorem of the paper "Higher order stroboscopic averaged functions: a general relationship with Melnikov functions" [arXiv:2011.03663], EJQTDE No. 77 (2021).
arxiv  

An analytical coupled homotopy-variational approach for solving strongly nonlinear differential equation

Journal of the Egyptian Mathematical Society, 2017
In the present paper, a novel technique combining the homotopy concept with variational formula has been presented to find accurate analytical solution for nonlinear differential equation with inertia and static non-linearity.
G.M. Ismail
doaj  

The Poincaré-Bendixson Theorem: from Poincaré to the XXIst century

Open Mathematics, 2012
Ciesielski Krzysztof
doaj   +1 more source

STABILITY AND BIFURCATION IN A DELAYED RATIO-DEPENDENT PREDATOR–PREY SYSTEM

Proceedings of the Edinburgh Mathematical Society, 2002
Dongmei Xiao, Wenxia Li
semanticscholar   +1 more source

An improved Mickens’ solution for nonlinear vibrations

Alexandria Engineering Journal
The Duffing equation and other nonlinear equations of motion of nonlinear vibrations are widely applied in the fields of engineering and science, especially mechanical and electrical engineering.
M.M. Ayub Hossain, B.M. Ikramul Haque
doaj  

Integral Curves Near Mildly Degenerate Singular Points of Vector Fields††AMS (MOS) 1970 SUBJECT CLASSIFICATION: 34C05, 34C25.

, 1973
Floris Takens
openaire   +2 more sources

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Existence and uniqueness of periodic solutions to certain third-order non-autonomous neutral functional differential equation

Nonlinear Analysis and Differential Equations, 2021
In this paper, we use Mawhin’s continuous theorem to discuss the sufficient conditions for the existence and uniqueness of an w-periodic solution for a kind of third-order neutral functional differential equation of the form d3 dt3 (x(t)−d(t)x(t−δ))+a(t ...
A. S. Motlaq, E. Elsayed
semanticscholar   +1 more source

Qualitative Study of a Class of Quartic Differential System with an Unstable Node

2021 International Conference on Recent Advances in Mathematics and Informatics (ICRAMI), 2021
In this paper, we introduce a class of quartic differential system from the integrability and the existence of limit cycle. We show that this class is integrable and we give the explicit expression of first integral.
R. Allaoua, R. Cheurfa, A. Bendjeddou
semanticscholar   +1 more source

Existence of positive solutions to impulsive nonlinear differential systems of second order with two point boundary conditions

Studia Universitatis Babeş-Bolyai. Mathematica
. In this paper the authors consider the existence of positive solutions to a two point boundary value problem for nonlinear second-order impulsive systems.
H. Kadari, A. Oumansour, John R. Graef, A. Ouahab   +3 more
semanticscholar   +1 more source

A Criterion for the Unique Existence of the Limit Cycle of a Lienard-Type System with One Parameter

, 2019
A criterion for the unique existence of limit cycles of a Liénard-type system with one parameter is investigated. Our idea is to estimate the solution orbit starting from the initial point on some invariant domain.
M. Hayashi
semanticscholar   +1 more source