First-order Answer Set Programming as Constructive Proof Search

We propose an interpretation of the first-order answer set programming (FOASP) in terms of intuitionistic proof theory. It is obtained by two polynomial translations between FOASP and the bounded-arity fragment of the Σ1 level of the Mints hierarchy in first-order intuitionistic logic. It follows th...

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Bibliographic Details
Published in:Theory and practice of logic programming Vol. 18; no. 3-4; pp. 673 - 690
Main Authors: SCHUBERT, ALEKSY, URZYCZYN, PAWEŁ
Format: Journal Article
Language:English
Published: Cambridge, UK Cambridge University Press 01.07.2018
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ISSN:1471-0684, 1475-3081
Online Access:Get full text
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Summary:We propose an interpretation of the first-order answer set programming (FOASP) in terms of intuitionistic proof theory. It is obtained by two polynomial translations between FOASP and the bounded-arity fragment of the Σ1 level of the Mints hierarchy in first-order intuitionistic logic. It follows that Σ1 formulas using predicates of fixed arity (in particular unary) is of the same strength as FOASP. Our construction reveals a close similarity between constructive provability and stable entailment, or equivalently, between the construction of an answer set and an intuitionistic refutation. This paper is under consideration for publication in Theory and Practice of Logic Programming
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ISSN:1471-0684
1475-3081
DOI:10.1017/S147106841800008X