Results 101 to 110 of about 10,534 (236)

On periodic solutions in the non-dissipative Lorenz model: the role of the nonlinear feedback loop

open access: yesTellus: Series A, Dynamic Meteorology and Oceanography, 2018
In this study, we discuss the role of the linear heating term and nonlinear terms associated with a non-linear feedback loop in the energy cycle of the three-dimensional (X–Y–Z) non-dissipative Lorenz model (3D-NLM), where (X, Y, Z) represent the ...
B.-W. Shen
doaj   +1 more source

BERNULLI DIFFERENTIAL EQUATION AND CHAOS

open access: yesVìsnik Dnìpropetrovsʹkogo Unìversitetu: Serìâ Modelûvannâ, 2013
Existence conditions of homoclinic orbits for some systems of ordinary quadratic dif­ferential equations with singular linear part are founded. A realization of these conditions guarantees the existence of chaotic attractors at 3-D autonomous quadratic ...
V. Ye. Belozerov
doaj   +1 more source

Homoclinic Orbits for Second-Order Hamiltonian Systems with Some Twist Condition

open access: yesAbstract and Applied Analysis, 2012
We study the existence and multiplicity of homoclinic orbits for second-order Hamiltonian systems q¨−L(t)q+∇qW(t,q)=0, where L(t) is unnecessarily positive definite for all t∈ℝ, and ∇qW(t,q) is of at most linear growth and satisfies some twist condition ...
Qi Wang, Qingye Zhang
doaj   +1 more source

Existence of homoclinic orbits for unbounded time-dependent $p$-Laplacian systems

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2016
In this paper, we consider the following ordinary $p$-Laplacian system \begin{equation} \frac{d}{dt}\big(|\dot u(t)|^{p-2}\dot u(t)\big)-\nabla K(t,u(t)) + \nabla W(t,u(t))=f(t),\tag{$HS$} \end{equation} where $t\in \mathbb{R}$ and $ p>1$.
Adel Daouas
doaj   +1 more source

A Note on the Existence of a Smale Horseshoe in the Planar Circular Restricted Three-Body Problem

open access: yesAbstract and Applied Analysis, 2015
It has been proved that, in the classical planar circular restricted three-body problem, the degenerate saddle point processes transverse homoclinic orbits.
Xuhua Cheng, Zhikun She
doaj   +1 more source

The point charge oscillator: qualitative and analytical investigations

open access: yesMathematical Modelling and Analysis, 2019
We study the mathematical model of the point charge oscillator which has been derived by A. Beléndez et al. [2]. First we determine the global phase portrait of this model in the Poincaré disk.
Klaus R. Schneider
doaj   +1 more source

Homoclinic and Heteroclinic Neural ODEs: Theory and Its Use to Construct New Chaotic Attractors

open access: yesJournal of Optimization, Differential Equations and Their Applications
New types of neural ordinary differential equations (NODE) with power nonlinearities are considered. For these NODE systems, new conditions for the existence of homoclinic and heteroclinic orbits are found.
Vasiliy Ye. Belozyorov   +2 more
doaj   +1 more source

Perturbed Li–Yorke homoclinic chaos

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2018
It is rigorously proved that a Li–Yorke chaotic perturbation of a system with a homoclinic orbit creates chaos along each periodic trajectory. The structure of the chaos is investigated, and the existence of infinitely many almost periodic orbits out of ...
Marat Akhmet   +3 more
doaj   +1 more source

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