Results 11 to 20 of about 108 (99)

About a dubious proof of a correct result about closed Newton Cotes error formulas

open access: yesOpen Mathematics, 2023
In this study, we comment about a wrong proof, at least incomplete, of the closed Newton Cotes error formulas for integration in a closed interval [a,b].\left[a,b].
López David J.   +4 more
doaj   +1 more source

Facial expression video generation based-on spatio-temporal convolutional GAN: FEV-GAN

open access: yesIntelligent Systems with Applications, 2022
Facial expression generation has always been an intriguing task for scientists and researchers all over the globe. In this context, we present our novel approach for generating videos of the six basic facial expressions.
Hamza Bouzid, Lahoucine Ballihi
doaj   +1 more source

Empirical mode decomposition with shape-preserving spline interpolation

open access: yesResults in Applied Mathematics, 2020
Empirical mode decomposition (EMD) is a popular, novel, user-friendly algorithm to decompose a given signal into its constituting components, utilizing spline interpolation.
Maria D. van der Walt
doaj   +1 more source

Shepard operator of least squares thin-plate spline type

open access: yes, 2021
We obtain some new Shepard type operators based on the classical, the modified Shepard methods and the least squares thin-plate spline function. Given some sets of points, we compute some representative subsets of knot points following an algorithm ...
CĂTINAȘ, Teodora, MALINA, Andra
core   +1 more source

Strong inequalities for the iterated Boolean sums of Bernstein operators: Dedicated to Professor Heiner Gonska on the occasion of his 70th anniversary.

open access: yes, 2022
In this paper we investigate the approximation properties for the iterated Boolean sums of Bernstein operators. The approximation behaviour of those operators is presented by the so-called strong inequalities. Moreover, such strong inequalities are valid
ZHOU, Xinlong, CHENG, Li
core   +1 more source

Strict positive definiteness on spheres via disk polynomials

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 31, Issue 12, Page 715-724, 2002., 2002
We characterize complex strictly positive definite functions on spheres in two cases, the unit sphere of ℂq, q ≥ 3, and the unit sphere of the complex ℓ2. The results depend upon the Fourier‐like expansion of the functions in terms of disk polynomials and, among other things, they enlarge the classes of strictly positive definite functions on real ...
V. A. Menegatto, A. P. Peron
wiley   +1 more source

The combined Shepard operator of inverse quadratic and inverse multiquadric type

open access: yes, 2022
Starting with the classical, the modified and the iterative Shepard methods, we construct some new Shepard type operators, using the inverse qua- dratic and the inverse multiquadric radial basis functions.
CĂTINAȘ, Teodora, MALINA, Andra
core   +1 more source

A note on the rate of convergence for Chebyshev-Lobatto and Radau systems

open access: yesOpen Mathematics, 2016
This paper is devoted to Hermite interpolation with Chebyshev-Lobatto and Chebyshev-Radau nodal points. The aim of this piece of work is to establish the rate of convergence for some types of smooth functions.
Berriochoa Elías   +3 more
doaj   +1 more source

Integral representations for Padé‐type operators

open access: yesJournal of Applied Mathematics, Volume 2, Issue 2, Page 51-69, 2002., 2002
The main purpose of this paper is to consider an explicit form of the Padé‐type operators. To do so, we consider the representation of Padé‐type approximants to the Fourier series of the harmonic functions in the open disk and of the L p‐functions on the circle by means of integral formulas, and, then we define the corresponding Padé‐type operators. We
Nicholas J. Daras
wiley   +1 more source

Study Of Hermite-Fejer Type Interpolation Polynomial

open access: yes, 2021
Given  and n points (node) in , the Hermite-Fejer type (HFT) interpolation polynomial is the polynomial of degree at most (2n-1) that agree with  and has zero derivative at each of the nodes.
Mousa Makey Khrajan
core   +1 more source

Home - About - Disclaimer - Privacy