Results 21 to 30 of about 71,031 (218)

Quadrature formulas using derivatives [PDF]

open access: yesMathematics of Computation, 1965
1. H. MINEUR, Techniques de Calcul Num~rique d l'Usage des Mathe'maticiens, Astronomes, Physiciens et Ingenieurs. Suivi de Quatre Notes Par: Mme. Henri Berthod-Zaborowski, Jean Bouzitat, et Marcel Mayot, B6ranger, Paris, 1952. 2. M. ABRAMOWITZ & I.
openaire   +2 more sources

On Birkhoff Quadrature Formulas [PDF]

open access: yesProceedings of the American Mathematical Society, 1986
In an earlier work the author has obtained new quadrature formulas (see (1.3)) based on function values and second derivatives on the zeros of ∏ n ( x ) {\prod _n}\left ( x \right ) as defined by (1.2).
openaire   +2 more sources

The numerical solution of a Fredholm integral equations of the second kind by the weighted optimal quadrature formula

open access: yesResults in Applied Mathematics
This work considers the optimal quadrature formula in a Hilbert space for the numerical approximation of the integral equations. It discusses the sequence of solving integral equations with quadrature formulas.
Abdullo Hayotov, Samandar Babaev
doaj   +1 more source

Optimal formulas for the approximate-analytical solution of the general Abel integral equation in the Sobolev space

open access: yesResults in Applied Mathematics, 2022
This article discusses the development of a new algorithm, which is based on optimal quadrature formulas for obtaining solutions to the generalized Abel integral equations.
Kholmat M. Shadimetov   +1 more
doaj   +1 more source

A new numerical quadrature formula on the unit circle [PDF]

open access: yes, 2007
11 pages, no figures.-- MSC2000 codes: 33C47, 42C05, 65D30.MR#: MR2335810 (2008i:33038)Zbl#: Zbl 1126.65023In this paper we study a quadrature formula for Bernstein–Szegö measures on the unit circle with a fixed number of nodes and unlimited exactness ...
Berriochoa, Elías   +2 more
core   +2 more sources

Inversion of the Laplace transform from the real axis using an adaptive iterative method [PDF]

open access: yes, 2009
In this paper a new method for inverting the Laplace transform from the real axis is formulated. This method is based on a quadrature formula. We assume that the unknown function $f(t)$ is continuous with (known) compact support.
Indratno, Sapto W., Ramm, A. G.
core   +8 more sources

Discretizing Distributions with Exact Moments: Error Estimate and Convergence Analysis

open access: yes, 2015
The maximum entropy principle is a powerful tool for solving underdetermined inverse problems. This paper considers the problem of discretizing a continuous distribution, which arises in various applied fields. We obtain the approximating distribution by
Tanaka, Ken'ichiro, Toda, Alexis Akira
core   +1 more source

On the composite Bernstein type quadrature formula

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   +2 more sources

Is Gauss quadrature better than Clenshaw-Curtis? [PDF]

open access: yes, 2006
We consider the question of whether Gauss quadrature, which is very famous, is more powerful than the much simpler Clenshaw-Curtis quadrature, which is less well-known.
Trefethen, Lloyd N.
core  

Linearizing and Forecasting: A Reservoir Computing Route to Digital Twins of the Brain

open access: yesAdvanced Science, EarlyView.
A new approach uses simple neural networks to create digital twins of brain activity, capturing how different patterns unfold over time. The method generates and recovers key dynamics even from noisy data. When applied to fMRI, it predicts brain signals and reveals distinctive activity patterns across regions and individuals, opening possibilities for ...
Gabriele Di Antonio   +3 more
wiley   +1 more source

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