Approximation on variable exponent spaces by linear integral operators

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

3 Scopus Citations
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Author(s)

  • Bing-Zheng Li
  • Bo-Lu He
  • Ding-Xuan Zhou

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)29-51
Journal / PublicationJournal of Approximation Theory
Volume223
Online published7 Aug 2017
Publication statusPublished - Nov 2017

Abstract

This paper aims at approximation of functions by linear integral operators on variable exponent spaces associated with a general exponent function on a domain of a Euclidean space. Under a log-Hölder continuity assumption of the exponent function, we present quantitative estimates for the approximation and solve an open problem raised in our earlier work. As applications of our key estimates, we provide high orders of approximation by quasi-interpolation type and linear combinations of Bernstein type integral operators on variable exponent spaces. We also introduce K-functionals and moduli of smoothness on variable exponent spaces and discuss their relationships and applications.

Research Area(s)

  • Bernstein type operators, Integral operators, K-functional, Learning theory, log-Hölder continuity, Variable exponent space

Citation Format(s)

Approximation on variable exponent spaces by linear integral operators. / Li, Bing-Zheng; He, Bo-Lu; Zhou, Ding-Xuan.
In: Journal of Approximation Theory, Vol. 223, 11.2017, p. 29-51.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review