Results 1 to 10 of about 10,389 (330)

Commutators in real interpolation with quasi-power parameters [PDF]

Abstract and Applied Analysis, 2002
The basic higher order commutator theorem is formulated for the real interpolation methods associated with the quasi-power parameters, that is, the function spaces on which Hardy inequalities are valid.
Ming Fan
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Approximate Hermite quasi-interpolation [PDF]

Applicable Analysis, 2008
In this paper we derive approximate quasi-interpolants when the values of a function $u$ and of some of its derivatives are prescribed at the points of a uniform grid. As a byproduct of these formulas we obtain very simple approximants which provide high order approximations for solutions to elliptic differential equations with constant coefficients.
Flavia Lanzara, Vladimir Maz’ya, G. Schmidt   +2 more
openalex   +5 more sources

A novel parameterized multiquadric quasi-interpolation operator with its optimal parameters

Results in Applied Mathematics
The shape parameter c plays a crucial role in determining the accuracy and effectiveness of multiquadric quasi-interpolation algorithm. However, a few works discuss the shape parameter c in multiquadric quasi-interpolation operator.
Hualin Xiao, Dan Qu
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On an Exact Convergence of Quasi-Periodic Interpolations for the Polyharmonic–Neumann Eigenfunctions

Algorithms
Fourier expansions employing polyharmonic–Neumann eigenfunctions have demonstrated improved convergence over those using the classical trigonometric system, due to the rapid decay of their Fourier coefficients.
Arnak Poghosyan, Lusine Poghosyan, Rafayel Barkhudaryan   +2 more
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Spline quasi-interpolation numerical methods for integro-differential equations with weakly singular kernels

Mathematical Modelling and Analysis
In this work, we introduce a numerical approach that utilizes spline  quasi-interpolation operators over a bounded interval. This method is designed to provide a numerical solution for a class of Fredholm integro-differential equations with weakly ...
Abdelmonaim Saou, Driss Sbibih, Mohamed Tahrichi, Domingo Barrera   +3 more
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Numerical Solution of Saint-Venant Equation by Cubic B-spline Quasi-interpolation [PDF]

Jisuanji kexue, 2023
Firstly,the error estimates of cubic spline quasi-intepolating operators are derived for continuous differential function with different orders.Secondly,cubic B-spline quasi-interpolation is used to get the numerical solution of Saint-Venant equation ...
QIAN Jiang, ZHANG Ding
doaj   +1 more source

Non-Uniform Spline Quasi-Interpolation to Extract the Series Resistance in Resistive Switching Memristors for Compact Modeling Purposes

Mathematics, 2021
An advanced new methodology is presented to improve parameter extraction in resistive memories. The series resistance and some other parameters in resistive memories are obtained, making use of a two-stage algorithm, where the second one is based on ...
María José Ibáñez, Domingo Barrera, David Maldonado, Rafael Yáñez, Juan Bautista Roldán   +4 more
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Multilevel quasi-interpolation

IMA Journal of Numerical Analysis, 2022
AbstractQuasi-interpolation methods are well-established tools in multivariate approximation. They are efficient as they do not require, in contrast to interpolation, the solution of a linear system. Quasi-interpolations are often first studied on infinite grids.
Franz, Tino, Wendland, Holger
openaire   +1 more source

An Improved Model for Kernel Density Estimation Based on Quadtree and Quasi-Interpolation

Mathematics, 2022
There are three main problems for classical kernel density estimation in its application: boundary problem, over-smoothing problem of high (low)-density region and low-efficiency problem of large samples.
Jiecheng Wang, Yantong Liu, Jincai Chang
doaj   +1 more source

Fractal cubic multiquadric quasi-interpolation

Journal of Computational and Applied Mathematics
Deependra Kumar, A. K. B. Chand, Peter Massopust   +2 more
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