On Word Rewriting Systems Having a Rational Derivation

  • Authors:
  • Didier Caucal

  • Affiliations:
  • -

  • Venue:
  • FOSSACS '00 Proceedings of the Third International Conference on Foundations of Software Science and Computation Structures: Held as Part of the Joint European Conferences on Theory and Practice of Software,ETAPS 2000
  • Year:
  • 2000

Quantified Score

Hi-index 0.00

Visualization

Abstract

We define four families of word-rewriting systems: the prefix/suffix systems and the left/right systems. The rewriting of prefix systems generalizes the prefix rewriting of systems: a system is prefix (suffix) if a left hand side and a right hand side are overlapping only by prefix (suffix). The rewriting of right systems generalizes the mechanism of transducers: a system is right (left) if a left hand side overlaps a right hand side only on the right (left). We show that these systems have a rational derivation even if they are not only finite but recognizable. Besides these four families, we give simple systems having a non rational derivation.