Titlebook: Logic for Programming, Artificial Intelligence, and Reasoning; 11th International W Franz Baader,Andrei Voronkov Conference proceedings 200

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978-3-540-25236-8Springer-Verlag Berlin Heidelberg 2005

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Logic for Programming, Artificial Intelligence, and Reasoning978-3-540-32275-7Series ISSN 0302-9743 Series E-ISSN 1611-3349

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How to Fix It: Using Fixpoints in Different Contexts,In this note we discuss the expressive power of .-calculi. We concentrate on those that are extensions of propositional modal logics with a fixpoint operator. The objective is to try to match the expressive power of monadic second-order logic. We consider different kinds of models: from trees and transition systems up to traces and timed systems.

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Abstract Model Generation for Preprocessing Clause Sets,s which are obtained from normal clause sets. One is for checking satisfiability of the original normal clause set. Another is used for eliminating unnecessary clauses from the original one. These abstract clause sets are propositional, i.e. decidable. Thus, we can use them for preprocessing the original one.

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