Results 61 to 70 of about 507 (97)

Advanced differential equations with piecewise constant argument deviations

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 6, Issue 4, Page 671-703, 1983., 1983
Functional differential equations of advanced type with piecewise constant argument deviations are studied. They are closely related to impulse, loaded and, especially, to difference equations, and have the structure of continuous dynamical systems within intervals of unit length.
S. M. Shah, Joseph Wiener
wiley   +1 more source

Yorke and Wright 3/2-stability theorems from a unified point of view [PDF]

open access: yes, 2003
We consider a family of scalar delay differential equations $x'(t)=f(t,x_t)$, with a nonlinearity $f$ satisfying a negative feedback condition combined with a boundedness condition.
Aplicada Ii   +4 more
core   +1 more source

Mathematical model on influence of past experiences on present activities of human brain

open access: yesComputational and Mathematical Biophysics
This article explores how emotional feelings linked to stored memories of past experiences influence the present activity of the human brain. To analyse this, a mathematical model is considered describing the dynamics in a two-layered network in which ...
Rao P. Raja Sekhara   +2 more
doaj   +1 more source

On the stability of a Cauchy type functional equation

open access: yesDemonstratio Mathematica, 2018
In this work, the Hyers-Ulam type stability and the hyperstability of the functional equationare proved.
Lee Jung Rye   +3 more
doaj   +1 more source

Stability in the class of first order delay differential equations [PDF]

open access: yes, 2016
The main aim of this paper is the investigation of the stability problem for ordinary delay differential equations. More precisely, we would like to study the following problem. Assume that for a continuous function a given delay differential equation is
Gselmann, Eszter, Kelemen, Anna
core   +2 more sources

On stability of cooperative and hereditary systems with a distributed delay

open access: yes, 2015
We consider a system $\displaystyle \frac{dx}{dt}=r_1(t) G_1(x) \left[ \int_{h_1(t)}^t f_1(y(s))~d_s R_1 (t,s) - x(t) \right], \frac{dy}{dt}=r_2(t) G_2(y) \left[ \int_{h_2(t)}^t f_2(x(s))~d_s R_2 (t,s) - y(t)\right]$ with increasing functions $f_1$ and ...
Berezansky, Leonid, Braverman, Elena
core   +1 more source

Feedback regulation of logistic growth

open access: yes, 1991
International Journal of Mathematics and Mathematical Sciences, Volume 16, Issue 1, Page 177-192, 1993.
K. Gopalsamy, Pei-Xuan Weng
wiley   +1 more source

Global Existence and Stability for Neutral Functional Evolution Equations with State-Dependent Delay

open access: yesNonautonomous Dynamical Systems, 2014
In this paper we prove the global existence and attractivity of mild solutions for neutral semilinear evolution equations with state-dependent delay in a Banach space.
Baliki Abdessalam, Benchohra Mouffak
doaj   +1 more source

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

Mittag-Leffler-Hyers-Ulam stability for a first- and second-order nonlinear differential equations using Fourier transform

open access: yesDemonstratio Mathematica
In this article, we apply the Fourier transform to prove the Hyers-Ulam and Hyers-Ulam-Rassias stability for the first- and second-order nonlinear differential equations with initial conditions.
Selvam Arunachalam   +2 more
doaj   +1 more source

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