Results 21 to 30 of about 42,377 (221)

Asymptotic stability of an epidemiological fractional reaction-diffusion model

open access: yesDemonstratio Mathematica, 2023
The aim of this article is to study the known susceptible-infectious (SI) epidemic model using fractional order reaction-diffusion fractional partial differential equations [FPDEs] in order to better describe the dynamics of a reaction-diffusion SI with ...
Djebara Lamia   +2 more
doaj   +1 more source

Exponential stability results for variable delay difference equations [PDF]

open access: yesOpuscula Mathematica, 2021
Sufficient conditions that guarantee exponential decay to zero of the variable delay difference equation \[x(n+1)=a(n)x(n)+b(n)x(n-g(n))\] are obtained. These sufficient conditions are deduced via inequalities by employing Lyapunov functionals.
Ernest Yankson
doaj   +1 more source

A perspective on graph theory-based stability analysis of impulsive stochastic recurrent neural networks with time-varying delays

open access: yesAdvances in Difference Equations, 2019
In this work, the exponential stability problem of impulsive recurrent neural networks is investigated; discrete time delay, continuously distributed delay and stochastic noise are simultaneously taken into consideration.
M. Iswarya   +5 more
doaj   +1 more source

One-dimensional disordered quantum mechanics and Sinai diffusion with random absorbers [PDF]

open access: yes, 2013
We study the one-dimensional Schr\"odinger equation with a disordered potential of the form $V (x) = \phi(x)^2+\phi'(x) + \kappa(x) $ where $\phi(x)$ is a Gaussian white noise with mean $\mu g$ and variance $g$, and $\kappa(x)$ is a random superposition ...
Grabsch, AurĂ©lien   +2 more
core   +5 more sources

Statistical mechanics of temporal association in neural networks with transmission delays [PDF]

open access: yes, 1991
We study the representation of static patterns and temporal sequences in neural networks with signal delays and a stochastic parallel dynamics. For a wide class of delay distributions, the asymptotic network behavior can be described by a generalized ...
A. C. C. Coolen   +19 more
core   +1 more source

Coarsening versus pattern formation [PDF]

open access: yes, 2015
It is known that similar physical systems can reveal two quite different ways of behavior, either coarsening, which creates a uniform state or a large-scale structure, or formation of ordered or disordered patterns, which are never homogenized.
Nepomnyashchy, A. A.
core   +2 more sources

Entropy Dissipation for Degenerate Stochastic Differential Equations via Sub-Riemannian Density Manifold

open access: yesEntropy, 2023
We studied the dynamical behaviors of degenerate stochastic differential equations (SDEs). We selected an auxiliary Fisher information functional as the Lyapunov functional.
Qi Feng, Wuchen Li
doaj   +1 more source

Guaranteed Cost Control for a Class of Nonlinear Discrete Time-Delay Systems

open access: yesIEEE Access, 2019
The guaranteed cost control problem for a class of nonlinear discrete time-delay systems is investigated. Based on the Lyapunov matrix, a complete-type Lyapunov-Krasovskii functional is constructed.
Lanhui Zhang   +3 more
doaj   +1 more source

Asymptotic behaviours of the solutions of neutral type Volterra integro-differential equations and some numerical solutions via differential transform method

open access: yesMANAS: Journal of Engineering, 2021
In this manuscript, we consider the first order neutral Volterra integro-differential equation (NVIDE) with delay argument. Firstly, we obtain novel sufficient conditions to establish the asymptotic behaviours of solutions of considered NVIDE using the ...
Yener Altun
doaj   +1 more source

On the relationship between instability and Lyapunov times for the 3-body problem

open access: yes, 2008
In this study we consider the relationship between the survival time and the Lyapunov time for 3-body systems. It is shown that the Sitnikov problem exhibits a two-part power law relationship as demonstrated previously for the general 3-body problem ...
D. C. Heggie   +12 more
core   +1 more source

Home - About - Disclaimer - Privacy