Results 21 to 30 of about 72 (71)

Approximation Properties of Ibragimov-Gadjiev-Durrmeyer Operators on Lp (ℝ+)

Demonstratio Mathematica, 2017
We deal with the approximation properties of a new class of positive linear Durrmeyer type operators which offer a reconstruction of integral type operators including well known Durrmeyer operators.
Ulusoy Gülsüm, Aral Ali
doaj   +1 more source

Concrete minimal 3 × 3 Hermitian matrices and some general cases

Demonstratio Mathematica, 2017
Given a Hermitian matrix M ∈ M3(ℂ) we describe explicitly the real diagonal matrices DM such that ║M + DM║ ≤ ║M + D║ for all real diagonal matrices D ∈ M3(ℂ), where ║ · ║ denotes the operator norm.
Klobouk Abel H., Varela Alejandro
doaj   +1 more source

Approximation theorems for multivariate Taylor-Abel-Poisson means: Dedicated to Professor Heiner Gonska on the occasion of his 70th anniversary.

, 2019
We obtain direct and inverse approximation theorems of functions of several variables by Taylor-Abel-Poisson means in the integral metrics. We also show that norms of multipliers in the spaces Lp,Y (Td) are equivalent for all positive integers d ...
SAVCHUK, Viktor, PRESTIN, Jürgen, SHIDLICH, Andrii   +2 more
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Some approximation properties of Urysohn type nonlinear operators [PDF]

, 2019
The central issue of this paper is to continue the investigation of convergence properties of Urysohn type operators. By using Urysohn type operators we will extend the theory of interpolation to functionals and operators.
KARSLI, Harun
core   +1 more source

Estimates for Durrmeyer-type exponential sampling series in Mellin-Orlicz spaces

Demonstratio Mathematica
This study examines Durrmeyer-type exponential sampling series to obtain a quantitative estimate by using the concept of the logarithmic modulus of smoothness defined with the help of a suitable modular functional on Mellin-Orlicz spaces.
Kangal Esma, Kantar Ülkü Dinlemez
doaj   +1 more source

On convergence of nonlinear singular integral operators with non-isotropic kernels [PDF]

, 2015
Here we give some approximation theorems concerning pointwise con- vergence and rate of pointwise convergence of nonlinear singular integral opera- tors with non-isotropic kernels of the form ... Mathematics Subject Classifification (2010): 41A35, 41A25,
VURAL, Mehmet, KARSLI, Harun
core  

On convergence of a kind of complex nonlinear Bernstein operators [PDF]

, 2015
The present article deals with the approximation properties and Voronovskaja type results with quantitative estimates for a certain class of com- plex nonlinear Bernstein operators (NBnf) of the form ...
KARSLI, Harun, UNAL, Esra
core  

A new kind of Durrmeyer-Stancu-type operators

Demonstratio Mathematica
The objective of this study is to examine a class of positive linear operators, defined in terms of the bψ,kλ,μ{b}_{\psi ,k}^{\lambda ,\mu } basis and to analyze their approximation properties. Direct estimates for the (λ,μ)\left(\lambda ,\mu )-Durrmeyer-
Cai Qing-Bo, Güngör Şule Yüksel, Çekim Bayram   +2 more
doaj   +1 more source

Hyers-Ulam stability of some positive linear operators [PDF]

The present article deals with the Hyers-Ulam stability of positive linear operators in approximation theory. We discuss the HU-stability of Bernstein-Schurer type operators, Bernstein-Durrmeyer operators and find the HU-stability constant for these ...
KAUR, Jaspreet, GOYAL, Meenu
core   +1 more source

Equivalence Between K-functionals Based on Continuous Linear Transforms [PDF]

, 2007
2000 Mathematics Subject Classification: 46B70, 41A10, 41A25, 41A27, 41A35, 41A36, 42A10.The paper presents a method of relating two K-functionals by means of a continuous linear transform of the function.
Draganov, Borislav, Ivanov, Kamen
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