Remarks on Thatte's transformation of term rewriting systems

  • Authors:
  • Bas Luttik;Piet Rodenburg;Rakesh Verma

  • Affiliations:
  • Department of Mathematics and Computer Science, Eindhoven University of Technology, P.O. Box 513, NL-5600 MB Eindhoven, The Netherlands and CWI, P.O. Box 94079, NL-1090 GB Amsterdam, The Netherlan ...;Programming Research Group, University of Amsterdam, Kruislaan 403, NL-1098 SJ Amsterdam, The Netherlands;Computer Science Department, University of Houston, TX 77204, United States

  • Venue:
  • Information and Computation
  • Year:
  • 2004

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Abstract

We carry out a detailed analysis of Thatte's transformation of term rewriting systems. We refute an earlier claim that this transformation preserves confluence for weakly persistent systems. We prove the preservation of weak normalization, and of confluence in weakly normalizing systems and in nonoverlapping systems with linear subtemplates. We conclude by proving that weak persistence is an undecidable property of term rewriting systems.