Embeddings into Free Heyting Algebras and Translations into Intuitionistic Propositional Logic

  • Authors:
  • Michael O'Connor

  • Affiliations:
  • Cornell University,

  • Venue:
  • LFCS '07 Proceedings of the international symposium on Logical Foundations of Computer Science
  • Year:
  • 2007

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Abstract

We find a translation with particularly nice properties from intuitionistic propositional logic in countably many variables to intuitionistic propositional logic in two variables. In addition, the existence of a possibly-not-as-nice translation from any countable logic into intuitionistic propositional logic in two variables is shown. The nonexistence of a translation from classical logic into intuitionistic propositional logic which preserves 驴 and 驴 but not necessarily 驴 is proven. These results about translations follow from additional results about embeddings into free Heyting algebras.