Ana-Maria Acu, Heiner Gonska, Margareta Heilmann
Published 2021-08-17Version 1
The Bernstein-type operator of Aldaz, Kounchev and Render (2009) is discussed. New direct results in terms of the classical second order modulus as well as in a modification following Marsden and Schoenberg are given.
An extension of a theorem of Schoenberg to products of spheres
Approximation properties of (p,q)-Meyer-Konig-Zeller Durrmeyer operators
Lower bounds for the approximation with variation-diminishing splines
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