Results 31 to 40 of about 28,711 (161)

Third order differential equations with delay

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2015
In this paper, we study the oscillation and asymptotic properties of solutions of certain nonlinear third order differential equations with delay. In particular, we extend results of I.
Petr Liška
doaj   +1 more source

FUZZY DELAY DIFFERENTIAL EQUATIONS WITH HYBRID SECOND AND THIRD ORDERS RUNGE-KUTTA METHOD [PDF]

open access: yesJournal of Engineering Science and Technology, 2018
This paper considers fuzzy delay differential equations with known statedelays. A dynamic problem is formulated by time-delay differential equations and an efficient scheme using a hybrid second and third orders Runge-Kutta method is developed and ...
RUI SIH LIM, SU HOE YEAK, ROHANIN AHMAD
doaj  

Moment Estimation for Uncertain Delay Differential Equations via the Composite Heun Scheme

open access: yesMathematics
As an important mathematical model actuated by the Liu process, uncertain delay differential equations depict the development of system dynamics. In the applications of uncertain delay differential equations, parameter estimation plays a key role. In the
Shaoling Zhou   +3 more
doaj   +1 more source

Delay Differential Equations in Sequence Spaces

open access: yesCommunications in Advanced Mathematical Sciences, 2019
The standard  delay equations are newly studied in the context of classical separable Banach Sequence Spaces.  As a classical solution is shown to exist, the associated semigroup and its infinitesimal generator are found, and some important properties of
Luis Gerardo Mármol   +1 more
doaj   +1 more source

Numerical Study for Time Delay Multistrain Tuberculosis Model of Fractional Order

open access: yesComplexity, 2017
A novel mathematical fractional model of multistrain tuberculosis with time delay memory is presented. The proposed model is governed by a system of fractional delay differential equations, where the fractional derivative is defined in the sense of the ...
Nasser Hassan Sweilam   +2 more
doaj   +1 more source

Classical Theory of Linear Multistep Methods for Volterra Functional Differential Equations

open access: yesDiscrete Dynamics in Nature and Society, 2021
Based on the linear multistep methods for ordinary differential equations (ODEs) and the canonical interpolation theory that was presented by Shoufu Li who is exactly the second author of this paper, we propose the linear multistep methods for general ...
Yunfei Li, Shoufu Li
doaj   +1 more source

Advanced Study on the Delay Differential Equation y′(t) = ay(t) + by(ct)

open access: yesMathematics, 2022
Many real-world problems have been modeled via delay differential equations. The pantograph delay differential equation y′(t)=ay(t)+byct belongs to such a set of delay differential equations.
Aneefah H. S. Alenazy   +3 more
doaj   +1 more source

Delayed Stochastic Linear-Quadratic Control Problem and Related Applications

open access: yesJournal of Applied Mathematics, 2012
We discuss a quadratic criterion optimal control problem for stochastic linear system with delay in both state and control variables. This problem will lead to a kind of generalized forward-backward stochastic differential equations (FBSDEs) with Itô’s ...
Li Chen, Zhen Wu, Zhiyong Yu
doaj   +1 more source

Oscillations of First Order Linear Delay Differential Equations with positive and negative coefficients

open access: yesمجلة بغداد للعلوم, 2011
Oscillation criteria are obtained for all solutions of the first-order linear delay differential equations with positive and negative coefficients where we established some sufficient conditions so that every solution of (1.1) oscillate.
Baghdad Science Journal
doaj   +1 more source

Approximate analytical solutions and applications of pantograph-type equations with Caputo derivative and variable orders

open access: yesApplied Mathematics in Science and Engineering, 2023
This study presents an efficient method that is suitable for differential equations, both with integer-order and fractional derivatives. This study examines the construction of solutions of fractional differential equations that are associated with ...
M.O. Aibinu, E. Momoniat
doaj   +1 more source

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