Results 11 to 20 of about 34,807 (305)

Fast methods for the solution of singular integro-differential and differential equations

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1981
Uniform methods based on the use of the Galerkin method and different Chebyshev expansion sets are developed for the numerical solution of linear integrodifferential equations of the first order.
L. F. Abd-Elal
doaj   +2 more sources

The Expansion Al-Zughair transformation and its devloper of it to solve Linear ordinary differential equations with constant coefficients [PDF]

open access: yesمجلة جامعة الانبار للعلوم الصرفة
A fundamental component of applied mathematics are differential equations with constant coefficients. Both complicated and physical systems may be well described using it.
Ali Mohammed, Zainab Razzaq
doaj   +2 more sources

Relaxation and asymptotic expansion of controlled stiff differential equations

open access: yesInternational Journal of Control
The control of relaxation-type systems of ordinary differential equations is investigated using the Hamilton-Jacobi-Bellman equation. First, we recast the model as a singularly perturbed dynamics which we embed in a family of controlled systems. Then we study this dynamics together with the value function of the associated optimal control problem.
Michael Herty, Hicham Kouhkouh
openaire   +3 more sources

The discrete (G′/G)-expansion method applied to the differential-difference Burgers equation and the relativistic Toda lattice system [PDF]

open access: yes, 2012
We introduce the discrete (G′/G)-expansion method for solving nonlinear differential-difference equations (NDDEs). As illustrative examples, we consider the differential-difference Burgers equation and the relativistic Toda lattice system.
Aslan, İsmail
core   +2 more sources

On the Approximate Solution of Partial Integro-Differential Equations Using the Pseudospectral Method Based on Chebyshev Cardinal Functions

open access: yes, 2021
In this paper, we apply the pseudospectral method based on the Chebyshev cardinal function to solve the parabolic partial integro-differential equations (PIDEs).
Fairouz Tchier   +3 more
core   +1 more source

On systems of differential equations with extrinsic oscillation [PDF]

open access: yes, 2010
We present a numerical scheme for an efficient discretization of nonlinear systems of differential equations subjected to highly oscillatory perturbations.
null null   +6 more
core   +1 more source

A Fresh Look To Exact Solutions of Some Coupled Equations

open access: yesITM Web of Conferences, 2018
This manuscript is going to seek travelling wave solutions of some coupled partial differential equations with an expansion method known as Sine- Gordon expansion method.
Karaagac Berat   +3 more
doaj   +1 more source

Steady-State Process Analysis of DC Converter Based on Equations Expansion

open access: yesMìkrosistemi, Elektronìka ta Akustika, 2020
The paper deals with processes analysis in circuits of converter working on a time-varying load. A control of inverter and load switches are realised by signals with incommensurable frequencies.
Igor Yevheniiovych Korotyeyev   +1 more
doaj   +1 more source

Asymptotic expansions in a nonhomogeneous differential equation [PDF]

open access: yesProceedings of the American Mathematical Society, 1967
In recent papers [2]-[8] asymptotic behavior of the solutions of an ordinary differential equation has been discussed by the development of an asymptotic expansion for the solution that is valid to one term. In [5], [7], asymptotic expansions valid to two terms were obtained for certain solutions of a differential equation.
openaire   +2 more sources

Exact solutions for STO and (3+1)-dimensional KdV-ZK equations using G′G2-expansion method

open access: yesResults in Physics, 2017
This article deals with finding some exact solutions of nonlinear fractional differential equations (NLFDEs) by applying a relatively new method known as G′G2-expansion method.
Sadaf Bibi   +4 more
doaj   +1 more source

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