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ISBN 10: 184890326X ISBN 13: 9781848903265
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Aggiungi al carrelloCondizione: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. KlappentextrnrnThis book is concerned with the mathematical analysis of the concept of formal proof in classical logic, and records - in substance - a longer exercise in applied &lambda-calculus.nnFollowing colloquialisms going back to L. E. J.
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Aggiungi al carrelloTaschenbuch. Condizione: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - This book is concerned with the mathematical analysis of the concept of formal proof in classical logic, and records - in substance - a longer exercise in applied ?-calculus.Following colloquialisms going back to L. E. J. Brouwer, the objects of study in this enterprise are called witnesses. A witness is meant to represent the logical proof of a classically valid formula, in a given proof-context. The formalisms used to express witnesses and their equational behaviour are extensions of the pure `typed' ?-calculus, considered as equational theories.Formally, a witness is generated from decorated - or `typed' - witness variables, representing assumptions, and witness operators, representing logical rules of inference.The equational specifications serve to define the witness operators.In general, this can be done by ignoring the `typing', i.e., the logic formulas themselves.Model-theoretically, the witnesses are objects of an extensional Scott ?-model.The approach - called, generically, `witness theory' - is inspired from work of N. G. de Bruijn, on a mathematical theory of proving, done during the late 1960s and the early 1970s, at the University of Eindhoven (The Netherlands), and is similar to the approach behind the Curry-Howard Correspondence, familiar from intuitionistic logic.For the classical case, the decorations - oft called `types' - are classical logic formulas.At quantifier-free level, the equational theory of concern is the ?-calculus with `surjective pairing' and some subsystens thereof, appropriately decorated.The extension to propositional, first- and second-order quantifiers is straightforward.The book consists of a collection of notes and papers written and circulated during the last ten years, as a continuation of previous research done by the author during the nineteen eighties.Among other things, it includes a survey of the origins of modern proof theory - Frege to Gentzen - from a witness-theoretical point of view, as well as a characteristic application of witness theory to a practical logic problem concerning axiomatisability.
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Aggiungi al carrelloTaschenbuch. Condizione: Neu. Witness Theory | Notes on ¿-calculus and Logic | Adrian Rezu¿ | Taschenbuch | Kartoniert / Broschiert | Englisch | 2020 | College Publications | EAN 9781848903265 | Verantwortliche Person für die EU: Libri GmbH, Europaallee 1, 36244 Bad Hersfeld, gpsr[at]libri[dot]de | Anbieter: preigu Print on Demand.