An Elementary Recursive Bound for Effective Positivstellensatz and Hilbert's 17th Problem

The authors prove an elementary recursive bound on the degrees for Hilbert's 17th problem. More precisely they express a nonnegative polynomial as a sum of squares of rational functions and obtain as degree estimates for the numerators and denominators the following tower of five exponentials 2...

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Bibliographic Details
Call Number:Libro Electrónico
Main Author: Lombardi, Henri
Other Authors: Perrucci, Daniel, Roy, Marie-Françoise
Format: Electronic eBook
Language:Inglés
Published: Providence : American Mathematical Society, 1920.
Series:Memoirs of the American Mathematical Society Ser.
Subjects:
Polynomials.
Algebraic fields.
Recursive functions.
Algebraic stacks.
Polynômes.
Corps algébriques.
Fonctions récursives.
Algebraic stacks
Algebraic fields
Polynomials
Recursive functions
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