Results 11 to 20 of about 145,690 (265)

Evaluating a double integral using Euler's method and Richardson extrapolation

open access: yesLietuvos Matematikos Rinkinys
We transform a double integral into a second-order initial value problem, which we solve using Euler's method and Richardson extrapolation. For an example we consider, we achieve accuracy close to machine precision (~10-13).
Justin Steven Calder Prentice
doaj   +3 more sources

A Double Integral Containing the Fresnel Integral Function Sx: Derivation and Computation

open access: yesJournal of Mathematics, 2022
A two-dimensional integral containing Sx is derived.
Robert Reynolds, Allan Stauffer
doaj   +1 more source

On the double Lusin condition and convergence theorem for Kurzweil-Henstock type integrals [PDF]

open access: yesMathematica Bohemica, 2016
Equiintegrability in a compact interval $E$ may be defined as a uniform integrability property that involves both the integrand $f_n$ and the corresponding primitive $F_n$.
Abraham Racca, Emmanuel Cabral
doaj   +1 more source

Commuting Double Sugeno Integrals [PDF]

open access: yesInternational Journal of Uncertainty, Fuzziness and Knowledge-Based Systems, 2019
In decision problems involving two dimensions (like several agents in uncertainty) the properties of expected utility ensure that the result of a two-stepped procedure evaluation does not depend on the order with which the aggregations of local evaluations are performed (e.g., agents first, uncertainty next, or the converse).
Dubois, Didier   +2 more
openaire   +3 more sources

Double Subordination-Preserving Properties for Certain Integral Operators

open access: yesJournal of Inequalities and Applications, 2007
The purpose of the present paper is to obtain the sandwich-type theorem which contains the subordination- and superordination-preserving properties for certain integral operators defined on the space of normalized analytic functions in the open unit ...
Nak Eun Cho, Shigeyoshi Owa
doaj   +2 more sources

A curious integral

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1996
A double integral which came from a cohomology calculation is evaluated explicitly using the properties of 3F2 and 2F1 hypergeometric functions.
David R. Masson
doaj   +1 more source

Double neutrosophic integrals

open access: yesNeutrosophic Sets and Systems, 2023
Several previous papers dealt with neutrosophic integrals without introducing the idea of double neutrosophic integrals. In this article, double integrals were discussed by presenting several theories in double neutrosophic integrals over a rectangle and over a general region, the most important of which is the neutrosophic Fubini's theorem.
Yaser Ahmad Alhasan   +2 more
openaire   +2 more sources

Application of the ARA Method in Solving Integro-Differential Equations in Two Dimensions

open access: yesComputation, 2022
The main purpose of this study is to investigate solutions of some integral equations of different classes using a new scheme. This research introduces and implements the new double ARA transform to solve integral and partial integro-differential ...
Rania Saadeh
doaj   +1 more source

Refined Wirtinger-type integral inequality

open access: yesJournal of Inequalities and Applications, 2018
Based on the extreme value conditions of a multiple variables function, a new class of Wirtinger-type double integral inequality is established in this paper.
Liansheng Zhang, Shuxia Wang
doaj   +1 more source

Design and implementation of double-integral sliding-mode controller for brushless direct current motor speed control

open access: yesAdvances in Mechanical Engineering, 2017
This article presents a double-integral sliding-mode controller with an adaptive proportional–integral–derivative observer for brushless direct current motor speed controller. First, an integral sliding-mode control is designed based on the motor dynamic
Seng-Chi Chen, Chun-Yi Kuo
doaj   +1 more source

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