Results 21 to 30 of about 53,940 (208)

Trigonometric Induced Multivariate Smooth Gauss–Weierstrass Singular Integrals Approximation

open access: yesMathematics, 2023
In this article, we employ the uniform and Lp, 1 ...
George A. Anastassiou
doaj   +1 more source

Best multiplier Approximation in L_(p,∅_n ) (B)

open access: yesAl-Mustansiriyah Journal of Science, 2019
The purpose of this paper is to find best multiplier approximation of unbounded functions in L_(p,∅_n ) –space by using Trigonometric polynomials and by de la Vallee- Poussin operators.
Saheb K. Al-Saidy   +2 more
doaj   +1 more source

On approximation processes defined by a cosine operator function; pp 214–224 [PDF]

open access: yesProceedings of the Estonian Academy of Sciences, 2017
In this paper we introduce the Blackman- and Rogosinski-type approximation processes in an abstract Banach space setting. The historical roots of these processes go back to W. W. Rogosinski in 1926.
Andi Kivinukk, Anna Saksa, Maria Zeltser
doaj   +1 more source

Padé approximant related to remarkable inequalities involving trigonometric functions

open access: yesJournal of Inequalities and Applications, 2016
In this paper we, respectively, give simple proofs of some remarkable trigonometric inequalities, based on the Padé approximation method. We also obtain rational refinements of these inequalities.
Gabriel Bercu
doaj   +1 more source

Metastable energy strata in numerical discretizations of weakly nonlinear wave equations [PDF]

open access: yes, 2016
The quadratic nonlinear wave equation on a one-dimensional torus with small initial values located in a single Fourier mode is considered. In this situation, the formation of metastable energy strata has recently been described and their long-time ...
Gauckler, Ludwig, Weiss, Daniel
core   +3 more sources

Transcritical flow of a stratified fluid over topography: analysis of the forced Gardner equation [PDF]

open access: yes, 2013
Transcritical flow of a stratified fluid past a broad localised topographic obstacle is studied analytically in the framework of the forced extended Korteweg--de Vries (eKdV), or Gardner, equation.
Clift, R.   +7 more
core   +3 more sources

Positive Data Visualization Using Trigonometric Function

open access: yesJournal of Applied Mathematics, 2012
A piecewise rational trigonometric cubic function with four shape parameters has been constructed to address the problem of visualizing positive data.
Farheen Ibraheem   +3 more
doaj   +1 more source

A Levinson-Galerkin algorithm for regularized trigonometric approximation

open access: yes, 1999
Trigonometric polynomials are widely used for the approximation of a smooth function $f$ from a set of nonuniformly spaced samples $\{f(x_j)\}_{j=0}^{N-1}$.
Strohmer, Thomas
core   +3 more sources

C1 rational quadratic trigonometric spline

open access: yesEgyptian Informatics Journal, 2013
A Bézier like C1 rational quadratic trigonometric polynomial spline is developed. It defines two shape parameters in each subinterval. The approximation and geometric properties are investigated. The curvature continuity is established.
Maria Hussain, Sidra Saleem
doaj   +1 more source

Approximation Theory XV: San Antonio 2016 [PDF]

open access: yes, 2017
These proceedings are based on papers presented at the international conference Approximation Theory XV, which was held May 22\u201325, 2016 in San Antonio, Texas.
DE MARCHI, Stefano   +2 more
core   +1 more source

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