Pointwise convergence of the Bernstein-Durrmeyer operators with respect to a collection of measures

被引:4
作者
Berdysheva, Elena E. [1 ]
Heilmann, Margareta [2 ]
Hennings, Katharina [1 ]
机构
[1] Univ Giessen, Dept Math, Giessen, Germany
[2] Univ Wuppertal, Dept Math & Informat, Wuppertal, Germany
关键词
Positive linear operators; Bernstein type operators; Pointwise convergence; APPROXIMATION;
D O I
10.1016/j.jat.2019.105339
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
In this paper we consider a generalization of the Bernstein-Durrmeyer operator where the integrals are taken with respect to measures that may vary from term to term. This construction is more general than the one considered by the first named author and her coauthors earlier, and it includes a number of well-known operators of Bernstein type as particular cases. We give conditions on the collections of measures that guarantee pointwise convergence at a point of continuity of a function. (C) 2019 Elsevier Inc. All rights reserved.
引用
收藏
页数:12
相关论文
共 17 条
[1]  
[Anonymous], 1967, THESIS
[2]   Bernstein-Durrmeyer operators with respect to arbitrary measure, II: Pointwise convergence [J].
Berdysheva, Elena E. .
JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS, 2014, 418 (02) :734-752
[3]   Uniform convergence of Bernstein-Durrmeyer operators with respect to arbitrary measure [J].
Berdysheva, Elena E. .
JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS, 2012, 394 (01) :324-336
[4]   Multivariate Bernstein-Durrmeyer operators with arbitrary weight functions [J].
Berdysheva, Elena E. ;
Jetter, Kurt .
JOURNAL OF APPROXIMATION THEORY, 2010, 162 (03) :576-598
[5]  
Berens Y., 1991, APPROXIMATION THEORY, P25
[6]   APPROXIMATION OF INTEGRABLE FUNCTIONS OVER [0,1] BY MODIFIED BERNSTEIN POLYNOMIALS [J].
DERRIENNIC, MM .
JOURNAL OF APPROXIMATION THEORY, 1981, 31 (04) :325-343
[7]  
Gal SG, 2017, RESULTS MATH, V72, P1405, DOI 10.1007/s00025-017-0759-4
[8]  
Gal SG, 2017, CARPATHIAN J MATH, V33, P49
[9]   SIMULTANEOUS APPROXIMATION BY A CLASS OF BERNSTEIN-DURRMEYER OPERATORS PRESERVING LINEAR FUNCTIONS [J].
Gonska, Heiner ;
Paltanea, Radu .
CZECHOSLOVAK MATHEMATICAL JOURNAL, 2010, 60 (03) :783-799
[10]   Approximation by multivariate Bernstein-Durrmeyer operators and learning rates of least-squares regularized regression with multivariate polynomial kernels [J].
Li, Bing-Zheng .
JOURNAL OF APPROXIMATION THEORY, 2013, 173 :33-55