Results 11 to 20 of about 29,531 (259)

An implicit system of delay differential algebraic equations from hydrodynamics

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2023
Direct spring operated pressure relief valves connected to a constantly charged vessel and a downstream pipe have a complex dynamics. The vessel-valve subsystem is described with an autonomous system of ordinary differential equations, while the presence
Fanni Kádár, Gábor Stépán
doaj   +1 more source

Exponential Multistep Methods for Stiff Delay Differential Equations

open access: yesAxioms, 2022
Stiff delay differential equations are frequently utilized in practice, but their numerical simulations are difficult due to the complicated interaction between the stiff and delay terms.
Rui Zhan   +3 more
doaj   +1 more source

On nonlinear delay differential equations [PDF]

open access: yesTransactions of the American Mathematical Society, 1994
We examine qualitative behaviour of delay differential equations of the form \[ y ′
openaire   +1 more source

On approximation of the solutions of delay differential equations by using piecewise constant arguments

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1991
By using the Gronwall Bellman inequality we prove some limit relations between the solutions of delay differential equations with continuous arguments and the solutions of some related delay differential equations with piecewise constant arguments(EPCA).
Istevan Györi
doaj   +1 more source

An hybrid initial value method for singularly perturbed delay differential equations with interior layers and weak boundary layer

open access: yesAin Shams Engineering Journal, 2018
In this paper, an hybrid initial value method on Shishkin mesh is suggested to solve singularly perturbed boundary value problem for second order ordinary delay differential equation with discontinuous convection coefficient and source term.
V. Subburayan
doaj   +1 more source

A Note on Existence of Mild Solutions for Second-Order Neutral Integro-Differential Evolution Equations with State-Dependent Delay

open access: yesFractal and Fractional, 2021
This article is mainly devoted to the study of the existence of solutions for second-order abstract non-autonomous integro-differential evolution equations with infinite state-dependent delay.
Shahram Rezapour   +4 more
doaj   +1 more source

Qualitative Behavior of the Solutions to Delay and Difference Equations

open access: yesВестник КазНУ. Серия математика, механика, информатика, 2018
It is noteworthy to observe that a first-order linear ordinary differential equation without delay does not possess oscillatory solutions. Therefore the investigation of oscillatory solutions is of interest for equations with delays or for the discrete
P. Ioannis
doaj   +1 more source

Global Boundedness for a Delay Differential Equation [PDF]

open access: yesTransactions of the American Mathematical Society, 1986
The inequality ( ∂ t u − Δ u ) ( t , x ) ≤ u ( t , x ) ( 1 − u ( t − τ , x ) )
openaire   +1 more source

Averaging Method for Neutral Stochastic Delay Differential Equations Driven by Fractional Brownian Motion

open access: yesJournal of Function Spaces, 2020
In this paper, we investigate the stochastic averaging method for neutral stochastic delay differential equations driven by fractional Brownian motion with Hurst parameter H∈1/2,1.
Peiguang Wang, Yan Xu
doaj   +1 more source

Delay differential logistic equation with harvesting

open access: yesMathematical and Computer Modelling, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Leonid Berezansky   +2 more
openaire   +1 more source

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