Quantitative Semantics Revisited

  • Authors:
  • Nuno Barreiro;Thomas Ehrhard

  • Affiliations:
  • -;-

  • Venue:
  • TLCA '99 Proceedings of the 4th International Conference on Typed Lambda Calculi and Applications
  • Year:
  • 1999

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Abstract

In the coherence space semantics of linear logic, the webs of the spaces interpreting the exponentials may be defined using multicliques (multisets whose supports are cliques) instead of cliques. Inspired by the quantitative semantics of Jean-Yves Girard, we give a characterization of the morphisms of the co-Kleisly category of the corresponding comonad (this category is cartesian closed and, therefore, is a model of intuitionistic logic). It turns out that these morphisms are the convex and multiplicative functions mapping multicliques to multicliques. This characterization is achieved via a normal form theorem, which associates a trace to each such map.