Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5773714 | Journal of Approximation Theory | 2017 | 29 Pages |
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.
Related Topics
Physical Sciences and Engineering
Mathematics
Analysis
Authors
Bing-Zheng Li, Bo-Lu He, Ding-Xuan Zhou,