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Quadrature Formula For Sampled Functions [PDF]

open access: yes, 2010
This paper deals with efficient quadrature formulas involving functions that are observed only at fixed sampling points. The approach that we develop is derived from efficient continuous quadrature formulas, such as Gauss-Legendre or Clenshaw-Curtis quadrature.
Minaoui, Khalid   +3 more
core   +4 more sources

On the composite Bernstein type quadrature formula [PDF]

open access: yesJournal of Numerical Analysis and Approximation Theory, 2010
Considering a given function \(f\in C[0,1]\), the interval \([0,1]\) is divided in \(m\) equally spaced subintervals \(\left[\tfrac{k-1}{m},\tfrac{k}{m}\right]\), \(k=\overline{1,m}\).
Dan Bărbosu, Dan Miclăuş
doaj   +3 more sources

Numerical quadrature methods for singular and nearly singular integrals [PDF]

open access: yes, 2001
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.This thesis is concerned with the development, design, and analysis of simple and efficient numerical quadrature methods for integrals on finite intervals ...
Chunrungsikul, Sumlearng
core   +7 more sources

Double inequalities for quadrature formula of Gauss type [PDF]

open access: yesJournal of Numerical Analysis and Approximation Theory, 2011
Double inequalities for the remainder term of the Gauss quadrature formula are given. These inequalities are sharp. Will also be considered particular cases for \(n = 1, 2\).
Marius Heljiu
doaj   +3 more sources

Exactness of Quadrature Formulas [PDF]

open access: yesSIAM Review, 2022
The standard design principle for quadrature formulas is that they should be exact for integrands of a given class, such as polynomials of a fixed degree. We show how this principle fails to predict the actual behavior in four cases: Newton-Cotes, Clenshaw-Curtis, Gauss-Legendre, and Gauss-Hermite quadrature.
openaire   +3 more sources

On semicardinal quadrature formulae [PDF]

open access: yesMathematics of Computation, 1974
The present paper concerns the semicardinal quadrature formulae introduced in Part III of the reference [3]. These were the limiting forms of Sard’s best quadrature formulae as the number of nodes increases indefinitely. Here we give a new derivation and characterization of these formulae.
Schoenberg, I. J., Silliman, S. D.
openaire   +1 more source

Three Point Quadrature Rules Involving, at Most, a First Derivative [PDF]

open access: yes, 1999
A unified treatment of three point quadrature rules is presented in which the classical rules of mid-point, trapezoidal and Simpson type are recaptured as particular cases.
Cerone, Pietro, Dragomir, Sever S
core   +4 more sources

On Convergence of Quadrature Methods for the Lipschitz-Continuous Functions [PDF]

open access: yes, 2000
In this article we present a new approach to quadrature methods where any quadrature formula is generated by a discontinuous function whose jumps are quadrature weights.
Fedotov, I, Dragomir, Sever S
core   +3 more sources

Optimal quadrature formulas in Sobolev space for solving the generalized Abel integral equation [PDF]

open access: yesE3S Web of Conferences
In this article, a composite optimal quadrature formula is constructed for an approximate analytical solution of the generalized integral Abel equation in the Sobolev functional space.
Daliyev Bakhtiyor   +5 more
doaj   +1 more source

A Novel Broadband Microwave Lumped-Element Quadrature Hybrid MMIC

open access: yesIEEE Access, 2022
In this paper, a novel broadband lumped-element quadrature hybrid MMIC for interferometric correlation radiometer is proposed. First, the cause of the bandwidth limitation in the lumped-element branch-line coupler is analyzed, which is the two identical ...
Xi Chen   +5 more
doaj   +1 more source

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