Higher-order Unification via Explicit Substitutions

  • Authors:
  • Gilles Dowek;Therese Hardin;Claude Kirchner

  • Affiliations:
  • -;-;-

  • Venue:
  • LICS '95 Proceedings of the 10th Annual IEEE Symposium on Logic in Computer Science
  • Year:
  • 1995

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Abstract

Higher-order unification is equational unification for beta-eta- conversion. But it is not first-order equational unification, as substitution has to avoid capture. In this paper higher-order unification is reduced to first-order equational unification in a suitable theory: the lambda-sigma-calculus of explicit substitutions.