Thue Specifications and Their Monadic Second-order Properties

  • Authors:
  • Teodor Knapik;Hugues Calbrix

  • Affiliations:
  • (Correspd.) IREMIA, Universit de la Reunion, BP 7151, 97715 Saint Denis Messageries Cedex 9, Reunion. e-mail: knapikuniv-reunion.fr;(Correspd.) College Jean Lecanuet, BP 1024, 76171 Rouen Cedex, France

  • Venue:
  • Fundamenta Informaticae
  • Year:
  • 1999

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Abstract

This paper introduces oriented Thue specifications and their models which are simple directed edge-labeled graphs. The monadic second-order theory of these models is investigated and shown decidable for the class of suffix-bounded rational oriented Thue specifications. In addition, a characterization of prefix-closed context-free languages is given in terms of oriented Thue specifications.