This monograph deals with the quantitative overconvergence phenomenon in complex approximation by various operators. The book is divided into three chapters. First, the results for the Schurer-Faber operator, Beta operators of first...

First comprehensive treatment in book form of shape-preserving approximation by real or complex polynomials in one or several variablesOf interest to grad students and researchers in approximation theory, mathematical analysis, numerical...

Quaternionic Approximation von Gal, Sorin G.