Results 1 to 10 of about 2,566,738 (350)

A linear initial-value problem [PDF]

open access: goldBulletin of the American Mathematical Society, 1963
J. S. MacNerney
openalex   +4 more sources

On the numerical Picard iterations with collocations for the initial value problem

open access: yesJournal of Numerical Analysis and Approximation Theory, 2019
Some variants of the numerical Picard iterations method are presented to solve an IVP for an ordinary differential system. The term "numerical" emphasizes that a numerical solution is computed.
Ernest Scheiber
doaj   +7 more sources

Generalized exponential function and initial value problem for conformable dynamic equations

open access: yesAIMS Mathematics, 2022
In this article, we define the generalized exponential function on arbitrary time scales in the conformable setting and develop its fundamental characteristics. We address the fundamental theory of a conformable fractional dynamic equation on time scales,
Awais Younus   +3 more
doaj   +1 more source

An Intial-Value Technique for Self-Adjoint Singularly Perturbed Two-Point Boundary Value Problems

open access: yesInternational Journal of Applied Mechanics and Engineering, 2020
In this paper, we present an initial value technique for solving self-adjoint singularly perturbed linear boundary value problems. The original problem is reduced to its normal form and the reduced problem is converted to first order initial value ...
P. Padmaja, P. Aparna, R.S.R. Gorla
doaj   +1 more source

Control elements in mechanism simulation [PDF]

open access: yesModeling, Identification and Control, 1989
The work reported in this paper is a step towards a system for multidisciplinary simulation of structure, mechanism and control elements. The control part of the system is implemented as a subroutine called from the mechanism/FEM package. While Newmark's/
Torleif Iversen
doaj   +1 more source

Duhamel-type integral for the initial boundary value problem

open access: yesSt. Petersburg Polytechnical University Journal: Physics and Mathematics, 2021
The paper considers the initial boundary value problem for the wave equation for the case of three spatial variables. The definition of a generalized solution is introduced and the existence and uniqueness theorem is proved.
Anikonov Dmitry, Konovalova Dina
doaj   +1 more source

Runge–Kutta Embedded Methods of Orders 8(7) for Use in Quadruple Precision Computations

open access: yesMathematics, 2022
High algebraic order Runge–Kutta embedded methods are commonly used when stringent tolerances are demanded. Traditionally, various criteria are satisfied while constructing these methods for application in double precision arithmetic.
Vladislav N. Kovalnogov   +4 more
doaj   +1 more source

Initial value problem in string-inspired nonlocal field theory

open access: yesJournal of High Energy Physics, 2022
We consider a nonlocal scalar field theory inspired by the tachyon action in open string field theory. The Lorentz-covariant action is characterized by a parameter ξ 2 that quantifies the amount of nonlocality.
Harold Erbin   +2 more
doaj   +1 more source

On Reusing the Stages of a Rejected Runge-Kutta Step

open access: yesMathematics, 2023
Runge-Kutta (RK) pairs are amongst the most popular methods for numerically solving Initial Value Problems. While using an RK pair, we may experience rejection of some steps through the interval of integration.
Vladislav N. Kovalnogov   +4 more
doaj   +1 more source

Orthogonal-Based Second Order Hybrid Initial Value Problem Solver

open access: yesFountain Journal of Natural and Applied Sciences (FUJNAS), 2016
This work focuses on development of an initial value problem solver by employing a new class of orthogonal polynomial, the basis function. We present the recursive formula of the class of polynomials constructed and adopt collocation technique to ...
E. O. Adeyefa   +3 more
doaj   +3 more sources

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