DagSemProc.05171.5.pdf
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Normal Form Theorem for Logic Programs with Cardinality Constraints
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Dagstuhl Seminar Proceedings, Volume 5171
Series: Dagstuhl Seminar Proceedings (DagSemProc) - License:
Creative Commons Attribution 4.0 International license
- Publication Date: 2005-09-14
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Victor W. Marek and Jeffrey B. Remmel. Normal Form Theorem for Logic Programs with Cardinality Constraints. In Nonmonotonic Reasoning, Answer Set Programming and Constraints. Dagstuhl Seminar Proceedings, Volume 5171, pp. 1-34, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2005)
https://doi.org/10.4230/DagSemProc.05171.5
Abstract
We discuss proof schemes, a kind of context-dependent proofs for logic programs. We show usefullness of these constructs both in the context of normal logic programs and their generalizations due to Niemela and collaborators. As an application we show the following result. For every cardinality-constraint logic program P there is a logic program P´ with the same heads, but with bodies consisting of atoms and negated atoms such that P and P´ have same stable models. It is worth noting that another proof of same result can be obtained from the results by Lifschitz and collaborators.
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Keywords
- Proof scheme
- cardinality constraints
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