On the Confluence of Linear Shallow Term Rewrite Systems

  • Authors:
  • Guillem Godoy;Ashish Tiwari;Rakesh Verma

  • Affiliations:
  • -;-;-

  • Venue:
  • STACS '03 Proceedings of the 20th Annual Symposium on Theoretical Aspects of Computer Science
  • Year:
  • 2003

Quantified Score

Hi-index 0.00

Visualization

Abstract

We show that the confluence of shallow linear term rewrite systems is decidable. The decision procedure is a nontrivial generalization of the polynomial time algorithms for deciding confluence of ground and restricted non-ground term rewrite systems presented in [13,2]. Our algorithm has a polynomial time complexity if the maximum arity of a function symbol in the signature is considered a constant.We also give EXPTIME-hardness proofs for reachability and confluence of shallow term rewrite systems.