Inverse theorems for some multidimensional operators

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Original languageEnglish
Pages (from-to)25-39
Journal / PublicationApproximation Theory and Its Applications
Issue number4
Publication statusPublished - Dec 1990
Externally publishedYes


In this paper we introduce a new K-functional which is especially useful for non-Feller operators. Inverse theorems for multidimensional Bernstein-Sikkema and Bernstein-Durrmeyer operators are given on a simplex and on a cube. © 1990 Springer.