Infinitary relations and their representation

  • Authors:
  • Laurent Mauborgne

  • Affiliations:
  • DI, École Normale Supérieure, 45 rue d'Ulm, 75230 Paris cedex 05, France

  • Venue:
  • Science of Computer Programming - Special issue on static analysis (SAS'99)
  • Year:
  • 2003

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Abstract

This papers presents extensions of Binary Decision Diagrams (BDDs) to represent some infinitary relations (coded as infinite boolean functions). Four classes of infinitary relations are presented, and their representations are discussed. The widest class is closed under all boolean operations. The three others give rise to a canonical representation, which, when restricted to finite relations, are the classical BDDs. The paper also gives new insights in to the notion of variables and the possibility of sharing variables that can be of interest in the case of finite relations.