Titlebook: Nonlinear Numerical Methods and Rational Approximation; Annie Cuyt Book 1988 D. Reidel Publishing Company, Dordrecht, Holland 1988 Hyperge

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On the Use of the Carathéodory-Fejér Method for Investigating ‘1/9’ and Similar Constantss can be estimated from their symmetric functions. The examples of rational approximation of exp(-t.) on [0, ∞), m=2,3 are also explored. The relation with the extremal polynomials method is briefly discussed.