Synopsis
This work is a self-contained elementary exposition of the theory of recursive functionals, that also includes a number of advanced results. Although aiming basically at a theory of higher order computability, attention is restricted to second order functionals, where the arguments are numerical functions and the values, when defined, are natural numbers. This theory is somewhat special, for to some extent it can be reduced to first order theory, but when properly extended and relativized it requires the full machinery of higher order computations. In the theory of recursive monotonic functionals the author formulates a reasonable notion of computation which provides the right frame for what appears to be a convincing form of the extended Church's thesis. At the same time, the theory provides sufficient room to formulate the classical results that are usually derived in terms of singular functionals. Presented are complete proofs of Gandy's selector theorem, Kleene's theorem on hyperarithmetical predicates, and Grilliot's theorem on effectively discontinuous functionals.
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Présentation de l'éditeur
This work is a self-contained elementary exposition of the theory of recursive functionals, that also includes a number of advanced results. Although aiming basically at a theory of higher order computability, attention is restricted to second order functionals, where the arguments are numerical functions and the values, when defined, are natural numbers. This theory is somewhat special, for to some extent it can be reduced to first order theory, but when properly extended and relativized it requires the full machinery of higher order computations. In the theory of recursive monotonic functionals the author formulates a reasonable notion of computation which provides the right frame for what appears to be a convincing form of the extended Church's thesis. At the same time, the theory provides sufficient room to formulate the classical results that are usually derived in terms of singular functionals. Presented are complete proofs of Gandy's selector theorem, Kleene's theorem on hyperarithmetical predicates, and Grilliot's theorem on effectively discontinuous functionals.
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Recursive Functionals (Studies in Logic and the Foundations of Mathematics)
Edité par
North Holland, 1992
ISBN 10 : 0444894470
ISBN 13 : 9780444894472
Ancien ou d'occasion
Couverture rigide
Edition originale
Vendeur : G. & J. CHESTERS, TAMWORTH, Royaume-Uni
Évaluation du vendeur 5 sur 5 étoiles
Hardcover. Etat : Fine. No Jacket. 1st Edition. 277 pages, a Fine hbk, publisher's laminated yellow boards (no jacket required). It is an ex-library book with absolute minimal evidence, and has clearly been rarely used (if ever). [0444894470]. N° de réf. du vendeur 44028
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