Article ID Journal Published Year Pages File Type
4607835 Journal of Approximation Theory 2010 11 Pages PDF
Abstract

Approximation properties of sequences of k-positive operators, i.e. linear operators acting in the space of analytical functions and preserving the cone of functions with non-negative Taylor coefficients, are studied. Some general theorems which are valid in the space of functions that are analytical in a bounded simply connected domain are proved.

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Physical Sciences and Engineering Mathematics Analysis
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