Geometry of Interaction and linear combinatory algebras

  • Authors:
  • Samson Abramsky;Esfandiar Haghverdi;Philip Scott

  • Affiliations:
  • Oxford University Computing Laboratory, Oxford, U.K.;Department of Mathematics, University of Pennsylvania, Philadelphia, PA., U.S.A.;Department of Mathematics and Statistics, University of Ottawa, Ottawa, Ontario, Canada

  • Venue:
  • Mathematical Structures in Computer Science
  • Year:
  • 2002

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Abstract

We present an axiomatic framework for Girard's Geometry of Interaction based on the notion of linear combinatory algebra. We give a general construction on traced monoidal categories, with certain additional structure, that is sufficient to capture the exponentials of Linear Logic, which produces such algebras (and hence also ordinary combinatory algebras). We illustrate the construction on six standard examples, representing both the ‘particle-style’ as well as the ‘wave-style’ Geometry of Interaction.