Results 71 to 80 of about 158 (155)

Some classes of surfaces generated by Nielson and Marshall type operators on the triangle with one curved side: Dedicated to Professor Gheorghe Coman on the occasion of his 80th anniversary

open access: yes, 2016
We construct some classes of surfaces which satisfy some given conditions, using some Hermite, Nielson and Marshall type interpolation operators defined on a triangle with one curved side.
CĂTINAȘ, Teodora
core  

On generalized Baskakov-Durrmeyer-Stancu type operators

open access: yesDemonstratio Mathematica, 2017
In this paper, we study some local approximation properties of generalized Baskakov-Durrmeyer-Stancu operators. First, we establish a recurrence relation for the central moments of these operators, then we obtain a local direct result in terms of the ...
Kumar Angamuthu Sathish   +2 more
doaj   +1 more source

Approximation with an arbitrary order by generalized Kantorovich-type and Durrmeyer-type operators on [0, +∞) [PDF]

open access: yes, 2017
Given an arbitrary sequence λn > 0, n ∈ N, with the property that limn→∞ λn = 0 as fast we want, in this note we introduce modified/ gene- ralized Sza´sz-Kantorovich, Baskakov-Kantorovich, Sza´sz-Durrmeyer-Stancu and Baskakov-Sza´sz-Durrmeyer-Stancu ...
TRIFA, Sorin
core   +1 more source

Approximation by q-analogue of modified Jakimovski-Leviatan-Stancu type operators

open access: yesDemonstratio Mathematica, 2017
In this paper, we introduce the q-analogue of the Jakimovski-Leviatan type modified operators introduced by Atakut with the help of the q-Appell polynomials.We obtain some approximation results via the well-known Korovkin’s theorem for these operators.We
Mursaleen Mohammad   +2 more
doaj   +1 more source

Note on the shape-preservation of a new class of Kantorovich-type operators via divided differences

open access: yesDemonstratio Mathematica
Shape-preserving approximation is a significant approximation method that has many application areas, such as computer-based geometric design, image processing, geodesy, chemistry, and robotics.
Turhan Nezihe
doaj   +1 more source

Multivariate and abstract approximation theory for Banach space valued functions

open access: yesDemonstratio Mathematica, 2017
Here we study quantitatively the high degree of approximation of sequences of linear operators acting on Banach space valued Fréchet differentiable functions to the unit operator, as well as other basic approximations including those under convexity ...
Anastassiou George A.
doaj   +1 more source

Localization results for the non-truncated max-product sampling operators based on Fejér and sinc-type kernels

open access: yesDemonstratio Mathematica, 2016
In this paper, we obtain strong localization results and local direct results in the approximation of continuous functions by the non-truncated max-product sampling operators based on Fejér and sinc (Wittaker)-type kernels.
Coroianu Lucian, Gal Sorin G.
doaj   +1 more source

Chlodowsky variant of Bernstein-type operators on the domain

open access: yesOpen Mathematics
In the present paper, we deal with Bernstein-Chlodowsky type operators for approximating functions on the domain. We first present Bernstein-Chlodowsky type operators in two variables and then we discuss some examples of these operators under a domain ...
Serenbay Sevilay Kırcı   +1 more
doaj   +1 more source

On two modified Phillips operators: Dedicated to Professor Heiner Gonska on the occasion of his 70th anniversary.

open access: yes, 2019
In this note we introduce two new modified Phillips operators G1 and n. We obtain direct estimates for approximation of bounded continuous functions, defined on [0, ∞) by G1 , as well as for approximation of unbounded continuous functions by G2 We ...
TACHEV, Gancho
core  

On the approximation of Kantorovich-type Szàsz-Charlier operators

open access: yesDemonstratio Mathematica
In this study, we introduce the Kantorovich-type modified Szàsz-Charlier operators and examine their approximation properties within the framework of fractional modeling and control theory. These operators are defined using the Korovkin-type theorem, and
Karabıyık Ümit, Ayık Adem
doaj   +1 more source

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