Results 11 to 20 of about 639 (129)

Rate of convergence of bounded variation functions by a Bézier‐Durrmeyer variant of the Baskakov operators

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2004, Issue 9, Page 459-468, 2004., 2004
We consider a Bézier‐Durrmeyer integral variant of the Baskakov operators and study the rate of convergence for functions of bounded variation.
Vijay Gupta, Ulrich Abel
wiley   +1 more source

Dunkl analogue of Szász-mirakjan operators of blending type

open access: yesOpen Mathematics, 2018
In the present work, we construct a Dunkl generalization of the modified Szász-Mirakjan operators of integral form defined by Pǎltanea [1]. We study the approximation properties of these operators including weighted Korovkin theorem, the rate of ...
Deshwal Sheetal   +2 more
doaj   +1 more source

A note on integral modification of the Meyer‐König and Zeller operators

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2003, Issue 31, Page 2003-2009, 2003., 2003
Guo (1988) introduced the integral modification of Meyer‐Kö nig and Zeller operators Mˆn and studied the rate of convergence for functions of bounded variation. Gupta (1995) gave the sharp estimate for the operators Mˆn. Zeng (1998) gave the exact bound and claimed to improve the results of Guo and Gupta, but there is a major mistake in the paper of ...
Vijay Gupta, Niraj Kumar
wiley   +1 more source

Durrmeyer type (p,q)-Baskakov operators preserving linear functions

open access: yes, 2018
The present paper deals with the construction of Baskakov Durrmeyer operators, which preserve the linear functions, in (p,q) -calculus. More precisely, using (p,q) -Gamma function we introduce genuine mixed type Baskakov Durrmeyer operators having ...
S. A. Mohiuddine, A. Alotaibi, T. Acar
semanticscholar   +1 more source

Positive operators and approximation in function spaces on completely regular spaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2003, Issue 61, Page 3841-3871, 2003., 2003
We discuss the approximation properties of nets of positive linear operators acting on function spaces defined on Hausdorff completely regular spaces. A particular attention is devoted to positive operators which are defined in terms of integrals with respect to a given family of Borel measures.
Francesco Altomare, Sabrina Diomede
wiley   +1 more source

A pointwise approximation theorem for linear combinations of Bernstein polynomials

open access: yesAbstract and Applied Analysis, Volume 1, Issue 4, Page 397-406, 1996., 1996
Recently, Z. Ditzian gave an interesting direct estimate for Bernstein polynomials. In this paper we give direct and inverse results of this type for linear combinations of Bernstein polynomials.
Shunsheng Guo   +4 more
wiley   +1 more source

Statistical approximation by Kantorovich-type discrete q-Betaoperators

open access: yes, 2013
The aim of the present paper is to introduce a Kantorovich-type modification ofthe q-discrete beta operators and to investigate their statistical andweighted statistical approximation properties. Rates of statistical convergenceby means of the modulus of
V. Mishra, K. Khatri, L. Mishra
semanticscholar   +1 more source

Abstract Korovkin theory for double sequences via power series method in modular spaces

open access: yesOperators and Matrices, 2019
KOROVKIN THEORY FOR DOUBLE SEQUENCES VIA POWER SERIES METHOD IN MODULAR SPACES FADIME DIRIK, SEVDA YILDIZ AND KAMIL DEMIRCI Abstract. In the present paper, we obtain an abstract version of the Korovkin type approximation theorems for double sequences of ...
F. Dirik, S. Yıldız, K. Demirci
semanticscholar   +1 more source

Properties of the modulus of continuity for monotonous convex functions and applications

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 18, Issue 3, Page 443-446, 1995., 1992
For a monotone convex function f ∈ C[a, b] we prove that the modulus of continuity w(f; h) is concave on [a, b] as function of h. Applications to approximation theory are obtained.
Sorin Gheorghe Gal
wiley   +1 more source

Statistical summability (C,1) and a Korovkin type approximation theorem

open access: yes, 2012
The concept of statistical summability (C,1) has recently been introduced by Móricz [Jour. Math. Anal. Appl. 275, 277-287 (2002)]. In this paper, we use this notion of summability to prove the Korovkin type approximation theorem by using the test ...
S. A. Mohiuddine   +2 more
semanticscholar   +1 more source

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