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A finite thue system with decidable word problem and without equivalent finite canonical system

  • General Electric

Research output: Contribution to journalArticlepeer-review

57 Scopus citations

Abstract

We present a single-axiom. Thue system with a decidable word problem for which there does not exist any finite equivalent canonical system. However, an equivalent finite canonical system for this Thue system can be obtained if new symbols are introduced in the presentation. This result settles an open question by Jantzen (1982) who asked whether every Thue system with a decidable word problem has an equivalent finite canonical system. We also discuss relationships between Thue systems and term rewriting systems.

Original languageEnglish
Pages (from-to)337-344
Number of pages8
JournalTheoretical Computer Science
Volume35
Issue numberC
DOIs
StatePublished - 1985

Keywords

  • Church-Rosser property
  • Thue systems
  • canonical systems
  • semi-Thue systems
  • term rewriting systems
  • word problem

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