Characterizing strong normalization in the Curien-Herbelin symmetric lambda calculus: Extending the Coppo-Dezani heritage

  • Authors:
  • Daniel J. Dougherty;Silvia Ghilezan;Pierre Lescanne

  • Affiliations:
  • Worcester Polytechnic Institute, Worcester, MA 101609, USA;Faculty of Engineering, University of Novi Sad, Novi Sad, Serbia;École Normale Supérieure de Lyon, Lyon, France

  • Venue:
  • Theoretical Computer Science
  • Year:
  • 2008

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Abstract

We develop an intersection type system for the @l@?@m@m@? calculus of Curien and Herbelin. This calculus provides a symmetric computational interpretation of classical sequent style logic and gives a simple account of call-by-name and call-by-value. The present system improves upon earlier type disciplines for @l@?@m@m@?: in addition to characterizing the @l@?@m@m@? expressions that are strongly normalizing under free (unrestricted) reduction, the system enjoys the Subject Reduction and the Subject Expansion properties.