Results 31 to 40 of about 254 (65)

On existence of periodic solutions of the Rayleigh equation of retarded type

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 23, Issue 1, Page 65-68, 2000., 2000
In this paper, we give two sufficient conditions on the existence of periodic solutions of the non‐autonomous Rayleigh equation of retarded type by using the coincidence degree theory.
Genqiang Wang, Jurang Yan
wiley   +1 more source

Exponential convergence of Cohen-Grossberg neural networks with continuously distributed leakage delays

open access: yesJournal of Inequalities and Applications, 2014
This paper is concerned with the global exponential convergence of Cohen-Grossberg neural networks with continuously distributed leakage delays. By using the Lyapunov functional method and differential inequality techniques, we propose a new approach to ...
Zhibin Chen, Shuhua Gong
semanticscholar   +2 more sources

Branches of Forced Oscillations Induced by a Delayed Periodic Force

open access: yesAdvanced Nonlinear Studies, 2019
We study global continuation properties of the set of T-periodic solutions of parameterized second order delay differential equations with constant time lag on smooth manifolds. We apply our results to get multiplicity of T-periodic solutions.
Calamai Alessandro   +2 more
doaj   +1 more source

Delay-induced patterns in a two-dimensional lattice of coupled oscillators [PDF]

open access: yes, 2014
We show how a variety of stable spatio-temporal periodic patterns can be created in 2D-lattices of coupled oscillators with non-homogeneous coupling delays.
Kantner, Markus   +2 more
core   +5 more sources

Delay differential equations: a partially ordered sets approach in vectorial metric spaces

open access: yesFixed Point Theory and Applications, 2014
In this paper we develop a fixed point theorem in the partially ordered vector metric space C([−τ,0],Rn) by using vectorial norm. Then we use it to prove the existence of periodic solutions to nonlinear delay differential equations.
M. Bachar, M. Khamsi
semanticscholar   +1 more source

An iterated graph construction and periodic orbits of Hamiltonian delay equations [PDF]

open access: yes, 2018
According to the Arnold conjectures and Floer's proofs, there are non-trivial lower bounds for the number of periodic solutions of Hamiltonian differential equations on a closed symplectic manifold whose symplectic form vanishes on spheres.
Albers, Peter   +2 more
core   +2 more sources

Existence and Stability of Periodic Solutions for Impulsive Fuzzy Cohen-Grossberg Neural Networks on Time Scales

open access: yes, 2015
. By applying the method of coincidence degree and constructing a suitable Lyapunov functional, some sufficient conditions are established for the existence and globally exponential stability of periodic solutions for a kind of impulsive fuzzy ...
Qianhong Zhang   +2 more
semanticscholar   +1 more source

Modeling transmission dynamics of rabies in Nepal

open access: yesInfectious Disease Modelling, 2021
Even though vaccines against rabies are available, rabies still remains a burden killing a significant number of humans as well as domestic and wild animals in many parts of the world, including Nepal.
Buddhi Pantha   +3 more
doaj  

A Dynamic P53-MDM2 Model with Time Delay

open access: yes, 2005
Specific activator and repressor transcription factors which bind to specific regulator DNA sequences, play an important role in gene activity control.
Adimy   +10 more
core   +1 more source

Integral Operators and Delay Differential Equations

open access: yes, 2006
The monodromy operator of a linear delay differential equation with periodic coefficients is formulated as an integral operator. The kernel of this operator includes a factor formed from the fundamental solution of the linear delay differential equation.
D. Gilsinn, F. Potra
semanticscholar   +1 more source

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