Regular Expressions for Languages over Infinite Alphabets

  • Authors:
  • Michael Kaminski;Tony Tan

  • Affiliations:
  • Department of Computer Science, Technion - Israel Institute of Technology, Haifa 32000, Israel. E-mail: kaminski@cs.technion.ac.il;Department of Computer Science, National University of Singapore, 3 Science Drive 2 Singapore 117543

  • Venue:
  • Fundamenta Informaticae
  • Year:
  • 2005

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Abstract

In this paper we introduce a notion of a regular expression over infinite alphabets and show that a language is definable by an infinite alphabet regular expression if and only if it is accepted by finite-state unification based automaton - a model of computation that is tightly related to other models of automata over infinite alphabets.