Completeness for linear regular negation normal form inference systems

  • Reiner Hähnle
  • Neil V. Murray
  • Erik Rosenthal
Communications Session 7B Logic for AI
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1325)


Completeness proofs that generalize the Anderson- Bledsoe excess literal argument are developed for calculi other than resolution. A simple proof of the completeness of regular, connected tableaux for formulas in conjunctive normal form (CNF) is presented. These techniques also provide completeness results for some inference mechanisms that do not rely on clause form. In particular, the completeness of regular, connected tableaux for formulas in negation normal form (NNF), and the completeness of NC-resolution under a linear restriction, are established.


Logic for Artificial Intelligence completeness tableau method resolution non-clausal inference negation normal form 


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Copyright information

© Springer-Verlag Berlin Heidelberg 1997

Authors and Affiliations

  • Reiner Hähnle
    • 1
  • Neil V. Murray
    • 2
  • Erik Rosenthal
    • 3
  1. 1.Department of Computer ScienceUniversity of KarlsruheKarlsruheGermany
  2. 2.Department of Computer ScienceState University of New YorkAlbanyUSA
  3. 3.Department of MathematicsUniversity of New HavenWest Haven

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