Results 21 to 30 of about 1,126,452 (304)

Complexity of Weighted Approximation over Rd

open access: yesJournal of Complexity, 2000
AbstractWe study approximation of multivariate functions defined over Rd. We assume that all rth order partial derivatives of the functions considered are continuous and uniformly bounded. Approximation algorithms U(f) only use the values of f or its partial derivatives up to order r.
Grzegorz W. Wasilkowski   +1 more
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

On Weighted Polynomial Approximation With Gaps [PDF]

open access: yesNagoya Mathematical Journal, 2005
Let α be a nonnegative continuous function on ℝ. In this paper, the author obtains a necessary and sufficient condition for polynomials with gaps to be dense in Cα, where Cα is the weighted Banach space of complex continuous functions ƒ on ℝ with ƒ(t) exp(−α(t)) vanishing at infinity.
openaire   +3 more sources

Weighted averaging and stochastic approximation [PDF]

open access: yesProceedings of 35th IEEE Conference on Decision and Control, 1997
The authors investigate the relations between weighted averaging and stochastic approximation (SA) algorithms. First, they define the weighted averaging operator and introduce two properties of the operator: regularity and effectiveness. They establish necessary and sufficient conditions on a sequence for convergence of its average.
I-Jeng Wang   +2 more
openaire   +2 more sources

Trigonometric Approximation by Modulus of Smoothness in Lp,α (X)

open access: yesAl-Mustansiriyah Journal of Science, 2021
In this paper, we study the approximate properties of functions by means of trigonometric polynomials in weighted spaces. Relationships between modulus of smoothness of function derivatives and those of the jobs themselves are introduced. In the weighted
Mohammed Hamad Fayyadh, Alaa Adnan Auad
doaj   +1 more source

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

Weight Approximation for Spatial Outcomes [PDF]

open access: yesSustainability, 2020
When preferences explicitly include a spatial component, it can be challenging to assign weights to geographic regions in a way that is both pragmatic and accurate. In multi-attribute decision making, weights reflect cardinal information about preferences that can be difficult to assess thoroughly in practice.
openaire   +1 more source

Weighted Sobolev spaces on curves [PDF]

open access: yes, 2002
45 pages, no figures.-- MSC1987 codes: 41A10, 46E35, 46G10.MR#: MR1934626 (2003j:46038)Zbl#: Zbl 1019.46026In this paper we present a definition of weighted Sobolev spaces on curves and find general conditions under which the spaces are complete for non ...
Pestana, Domingo   +3 more
core   +1 more source

Approximation theory for weighted Sobolev spaces on curves [PDF]

open access: yes, 2001
17 pages, no figures.-- MSC2000 codes: 41A10, 46E35, 46G10.MR#: MR1882649 (2003c:42002)In this paper we present a definition of weighted Sobolev spaces on curves and find general conditions under which the spaces are complete.
Pestana Galván, Domingo   +6 more
core   +1 more source

Construction of a New Family of Baskakov Operators Based on Negative λ-Binomial Distribution

open access: yesMathematics
We propose the λ-Baskakov operator based on λ-binomial distribution, which is a new Baskakov-type operator. First, the moments and the central moments for them and their quantitative properties are computed.
Wen-Tao Cheng   +3 more
doaj   +1 more source

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