A method for rational Chebyshev approximation of rational functions on the unit disk and on the unit interval

Abstract

A method for construction of CF approximants in some cases of rational approximation of a rational function f on the unit disk and on the unit interval is presented. The inverted square root of the greatest positive eigenvalue and a corresponding eigenvector of an eigenvalue problem defined by the coefficients of f gives the solution. 
DOI: 10.1023/A:1016636532753

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