New foundations for fixpoint computations: fix-hyperdoctrines and the fix-logic

Abstract: This paper introduces a new higher-order typed constructive predicate logic for fixpoint computations, which exploits the categorical semantics of computations introduced by Moggi [9] and contains a strong version of Martin Löf's 'iteration type' [12]. The type system enforc...

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Bibliographische Detailangaben
Hauptverfasser: Crole, Roy L. (VerfasserIn), Pitts, Andrew M. 1956- (VerfasserIn)
Format: Buch
Sprache:English
Veröffentlicht: Cambridge 1990
Schriftenreihe:Computer Laboratory <Cambridge>: Technical report 204
Schlagworte:
Zusammenfassung:Abstract: This paper introduces a new higher-order typed constructive predicate logic for fixpoint computations, which exploits the categorical semantics of computations introduced by Moggi [9] and contains a strong version of Martin Löf's 'iteration type' [12]. The type system enforces a separation of computations from values. The logic contains a novel form of fixpoint induction and can express partial and total correctness statements about evaluation of computations to values. The constructive nature of the logic is witnessed by strong metalogical properties which are proved using a category-theoretic version of the 'logical relations' method."
Beschreibung:37 S.

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