Decision Procedures for Guarded Logics

  • Erich Grädel
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1632)


Different variants of guarded logics (a powerful generalization of modal logics) are surveyed and the recent decidability result for guarded fixed point logic (obtained in joint work with I. Walukiewicz) is explained. The exposition given here emphasizes the tree model property of guarded logics: every satisfiable sentence has a model of bounded tree width.


Modal Logic Decision Procedure Tree Decomposition Point Logic Kripke Structure 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1999

Authors and Affiliations

  • Erich Grädel
    • 1
  1. 1.Mathematische Grundlagen der InformatikRWTH AachenGermany

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