Results 11 to 20 of about 62 (61)

Lp –Error Bounds of Two and Three–Point Quadrature Rules For Riemann–Stieltjes Integrals

open access: yesMoroccan Journal of Pure and Applied Analysis, 2018
In this work, Lp-error estimates of general two and three point quadrature rules for Riemann-Stieltjes integrals are given. The presented proofs depend on new triangle type inequalities of Riemann-Stieltjes integrals.
Alomari Mohammad W., Guessab Allal
doaj   +1 more source

Generalized Stieltjes polynomials and rational Gauss-Kronrod quadrature [PDF]

open access: yes, 2004
17 pages, no figures.-- MSC1991 codes: Primary: 42C05, 41A20, 65D32; Secondary: 30E10.MR#: MR2036643 (2004m:33021)Zbl#: Zbl 1056.42017Generalized Stieltjes polynomials are introduced and their asymptotic properties outside the support of the measure are ...
López Lagomasino, Guillermo   +5 more
core   +1 more source

Cubature Rules of Prescribed Merit [PDF]

open access: yes, 1996
We introduce a criterion for the evaluation of multidimensional quadrature, or cubature, rules for the hypercube: this is the merit of a rule, which is closely related to its trigonometric degree, and which reduces to the Zaremba figure of merit in the ...
Lyness, J. N.   +3 more
core   +1 more source

Convergence and computation of simultaneous rational quadrature formulas [PDF]

open access: yes, 2007
22 pages, no figures.-- MSC2000 codes: Primary 41A55. Secondary 41A28, 65D32.MR#: MR2286008 (2008a:65049)Zbl#: Zbl 1168.65326We discuss the convergence and numerical evaluation of simultaneous quadrature formulas which are exact for rational functions ...
López Lagomasino, Guillermo   +5 more
core   +1 more source

Stieltjes-type polynomials on the unit circle [PDF]

open access: yes, 2009
29 pages, no figures.-- MSC2000 codes: Primary 65D32, 42A10, 42C05; Secondary 30E20.MR#: MR2476567Stieltjes-type polynomials corresponding to measures supported on the unit circle T are introduced and their asymptotic properties away from T are studied ...
López Lagomasino, Guillermo   +2 more
core   +1 more source

Adaptive Integration of Convex Functions of One Real Variable

open access: yesAnnales Mathematicae Silesianae
We present an adaptive method of approximate integration of convex (as well as concave) functions based on a certain refinement of the celebrated Hermite–Hadamard inequality. Numerical experiments are performed and the role of harmonic numbers is shown.
Wąsowicz Szymon
doaj   +1 more source

On the unbounded divergence of interpolatory product quadrature rules on Jacobi nodes

open access: yes, 2015
This paper is devoted to prove the unbounded divergence on superdense sets, with respect to product quadrature formulas of interpolatory type on Jacobi nodes.
MITREA, Alexandru I.
core  

AVersatile Spectral Matrix Collocation Method for Tackling Bratu, Riccati, and Higher Order Linear and Nonlinear Differential Equations Containing Delay Variables

open access: yes
 This study presents a numerical matrix collocation method for solving Bratu equations, Riccati equations, and high-order linear/nonlinear differential equations with delay variables—all of which hold significant importance in the literature ...
Baykuş Savaşaneril, Nurcan   +1 more
core   +1 more source

Multiple Orthogonal Polynomials on the Semicircle and Corresponding Quadratures of Gaussian Type

open access: yes, 2004
In this paper multiple orthogonal polynomials defined using orthogonality conditions spread out over r different measures are considered. We study multiple orthogonal polynomials on the real line, as well as on the semicircle (complex polynomials ...
Gradimir V Milovanović, Marija Stanić
core  

Superdense unbounded divergence of a class of interpolatory product quadrature formulas: Dedicated to Professor Gheorghe Coman on the occasion of his 80th anniversary

open access: yes, 2016
. The aim of this paper is to highlight the superdense unbounded divergence of a class of product quadrature formulas of interpolatory type on Jacobi nodes, associated to the Banach space of all real continuous functions defined on [-1; 1], and to a ...
MITREA, Alexandru I.
core  

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