Propositional theories are strongly equivalent to logic programs

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Propositional theories are strongly equivalent to logic programs

CABALAR, PEDRO; FERRARIS, PAOLO

Theory and practice of logic programming, 11/2007, Volume: 7, Issue: 6

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This paper presents a property of propositional theories under the answer sets semantics (called Equilibrium Logic for this general syntax): any theory can always be reexpressed as a strongly equivalent disjunctive logic program, possibly with negation in the head. We provide two different proofs for this result: one involving a syntactic transformation, and one that constructs a program starting from the countermodels of the theory in the intermediate logic of here-and-there.

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CABALAR, PEDRO | FERRARIS, PAOLO

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