, Volume 15, Issue 1, pp 87–103

Approximation theorems by positive linear operators in weighted spaces



In this study, we obtain some Korovkin type approximation theorems by positive linear operators on the weighted space of all real valued functions defined on the real two-dimensional Euclidean space \({\mathbb{R}^2}\). This paper is mainly consisted of two parts: a Korovkin type approximation theorem via the concept of A-statistical convergence and a Korovkin type approximation theorem via \({\mathcal {A}}\)-summability.


A-statistical convergence Matrix summability The Korovkin type theorem Positive linear operators 

Mathematics Subject Classification (2000)

40A05 41A36 47B38 


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© Birkhäuser Verlag Basel/Switzerland 2010

Authors and Affiliations

  1. 1.Department of Information and Mathematics SciencesChina Jiliang UniversityHangzhouPeople’s Republic of China

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