Universal algebra for termination of higher-order rewriting

  • Authors:
  • Makoto Hamana

  • Affiliations:
  • Department of Computer Science, Gunma University, Japan

  • Venue:
  • RTA'05 Proceedings of the 16th international conference on Term Rewriting and Applications
  • Year:
  • 2005

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Abstract

We show that the structures of binding algebras and Σ-monoids by Fiore, Plotkin and Turi are sound and complete models of Klop's Combinatory Reduction Systems (CRSs). These algebraic structures play the same role of universal algebra for term rewriting systems. Restricting the algebraic structures to the ones equipped with well-founded relations, we obtain a complete characterisation of terminating CRSs. We can also naturally extend the characterisation to rewriting on meta-terms by using the notion of Σ-monoids.