Results 51 to 60 of about 25,622 (147)

The Theory of Quasiconformal Mappings in Higher Dimensions, I [PDF]

, 2013
We present a survey of the many and various elements of the modern higher-dimensional theory of quasiconformal mappings and their wide and varied application. It is unified (and limited) by the theme of the author's interests.
Gaven J. Martin, Gaven J. Martin
core  

On a Kantorovich Variant of (p,q)-Szász-Mirakjan Operators

Journal of Function Spaces, 2016
We propose a Kantorovich variant of (p,q)-analogue of Szász-Mirakjan operators. We establish the moments of the operators with the help of a recurrence relation that we have derived and then prove the basic convergence theorem.
M. Mursaleen, Abdullah Alotaibi, Khursheed J. Ansari   +2 more
doaj   +1 more source

Better Approximation of Functions by Genuine Baskakov Durrmeyer Operators

Journal of New Theory, 2020
In this paper, we define a new genuine Baskakov-Durrmeyer operators.We give uniform convergence using the weighted modulus of continuity. Then westudy direct approximation of the operators in terms of the moduli of smoothness.After that a Voronovskaya ...
Gülsüm Ulusoy Ada
doaj  

Sharp weighted estimates for multi-frequency Calder\'on-Zygmund operators

, 2017
In this paper we study weighted estimates for the multi-frequency $\omega-$Calder\'{o}n-Zygmund operators $T$ associated with the frequency set $\Theta=\{\xi_1,\xi_2,\dots,\xi_N\}$ and modulus of continuity $\omega$ satisfying the usual Dini condition ...
Raani, K. S. Senthil, Shrivastava, Saurabh   +1 more
core  

Convergence analysis of semi-exponential Post-Widder operators

Miskolc Mathematical Notes
In the present article, we provide a recurrence relation for the semi-exponential Post-Widder operators (1.1) and estimate the moments for these operators.
Sandeep Kumar, Naokant Deo
doaj   +1 more source

Weighted Big Lipschitz algebras of analytic functions and closed ideals

, 2014
We give the smallest closed ideal with given hull and inner factor for some weighted big Lipschitz algebras of analytic ...
Bouya, Brahim, Zarrabi, Mohamed
core   +1 more source

Approximation Properties of λ-Gamma Operators Based on q-Integers

Journal of Function Spaces, 2020
In the present paper, we will introduce λ-Gamma operators based on q-integers. First, the auxiliary results about the moments are presented, and the central moments of these operators are also estimated.
Wen-Tao Cheng, Xiao-Jun Tang
doaj   +1 more source

Approximation properties of a modified Gauss–Weierstrass singular integral in a weighted space

Journal of Inequalities and Applications
Singular integral operators play an important role in approximation theory and harmonic analysis. In this paper, we consider a weighted Lebesgue space L p , w $L^{p,w}$ , define a modified Gauss–Weierstrass singular integral on it, and study direct and ...
Abhay Pratap Singh, Uaday Singh
doaj   +1 more source

On (p,q)-Analogue of Gamma Operators

Journal of Function Spaces, 2019
In this paper, a kind of new analogue of Gamma type operators based on (p,q)-integers is introduced. The Voronovskaja type asymptotic formula of these operators is investigated. And some other results of these operators are studied by means of modulus of
Wen-Tao Cheng, Wen-Hui Zhang
doaj   +1 more source

Approximation with Szász-Chlodowsky operators employing general-Appell polynomials

Journal of Inequalities and Applications
This article explores a Chlodowsky-type extension of Szász operators using the general-Appell polynomials. The convergence properties of these operators are established by employing the universal Korovkin-type property, and the order of approximation is ...
Nusrat Raza, Manoj Kumar, M. Mursaleen
doaj   +1 more source