Results 21 to 30 of about 631,044 (314)

Weighted best local L approximation

open access: yesJournal of Approximation Theory, 1984
For a weight w with some conditions near the origin the limit of the error \(\epsilon^{-n-1}\{f(\epsilon t)-P_{w,\epsilon}f(\epsilon t)\}\), where \(P_{w,\epsilon}f\) is the weighted best \(L^ p_{w,\epsilon}\) approximation of the function f in a class \(t^ p_{m,w}\), analogous to those considered by Calderón and Zygmund, is characterized. The limit is
Macías, R.A, Zó, F
openaire   +2 more sources

On ( p , q ) $(p,q)$ -Szász-Mirakyan operators and their approximation properties

open access: yesJournal of Inequalities and Applications, 2017
In the present paper, we introduce a new modification of Szász-Mirakyan operators based on ( p , q ) $(p, q)$ -integers and investigate their approximation properties. We obtain weighted approximation and Voronovskaya-type theorem for new operators.
M Mursaleen   +2 more
doaj   +1 more source

A new construction of Lupaş operators and its approximation properties

open access: yesAdvances in Difference Equations, 2021
The aim of this paper is to study a new generalization of Lupaş-type operators whose construction depends on a real-valued function ρ by using two sequences u m $u_{m} $ and v m $v_{m}$ of functions.
Mohd Qasim   +3 more
doaj   +1 more source

The Energy-Weighted and Non Energy-Weighted Gamow-Teller Sum Rules in Relativistic Random Phase Approximation [PDF]

open access: yes, 2003
The non energy-weighted Gamow-Teller(GT) sum rule is satisfied in relativistic models, when all nuclear density-dependent terms, including Pauli blocking terms from nucleon-antinucleon excitations, are taken into account in the RPA correlation function ...
Kurasawa, Haruki, Suzuki, Toshio
core   +1 more source

Approximate maximum weight branchings [PDF]

open access: yesInformation Processing Letters, 2006
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bagchi, Amitabha   +2 more
openaire   +2 more sources

MODIFIED MODULUS OF SMOOTHNESS AND APPROXIMATION IN WEIGHTED LORENTZ SPACES BY BOREL AND EULER MEANS

open access: yesПроблемы анализа, 2020
Using one-sided Steklov means, we introduce a new modulus of smoothness in weighted Lorentz spaces. The direct and inverse approximation theorem for this modulus of smoothness are proved.
S. S. Volosivets
doaj   +1 more source

Approximation algorithms for node-weighted prize-collecting Steiner tree problems on planar graphs [PDF]

open access: yes, 2016
We study the prize-collecting version of the Node-weighted Steiner Tree problem (NWPCST) restricted to planar graphs. We give a new primal-dual Lagrangian-multiplier-preserving (LMP) 3-approximation algorithm for planar NWPCST.
Byrka, Jarosław   +2 more
core   +2 more sources

Certain Generalized q-Operators

open access: yesDemonstratio Mathematica, 2015
The applications of q-calculus in the approximation theory is a very interesting area of research in the recent years, several new q-operators were introduced and their behaviour were discussed by many researchers.
Prakash Om   +2 more
doaj   +1 more source

Approximation in weighted Orlicz spaces

open access: yesMathematica Slovaca, 2011
Abstract We prove some direct and converse theorems of trigonometric approximation in weighted Orlicz spaces with weights satisfying so called Muckenhoupt’s A p condition.
Akgün, Ramazan, İsrafilov, Daniyal M.
openaire   +4 more sources

Weighted-density approximation for general nonuniform fluid mixtures [PDF]

open access: yes, 1999
In order to construct a general density-functional theory for nonuniform fluid mixtures, we propose an extension to multicomponent systems of the weighted-density approximation (WDA) of Curtin and Ashcroft [Phys. Rev. A 32, 2909 (1985)].
A. R. Denton   +16 more
core   +2 more sources

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