Behavioural Equivalence and Indistinguishability in Higher-Order Typed Languages

  • Shin-ya Katsumata
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2755)

Abstract

We extend the study of the relationship between behavioural equivalence and the indistinguishability relation [4,7] to the simply typed lambda calculus, where higher-order types are available. The relationship between these two notions is established in terms of factorisability [4]. The main technical tool of this study is pre-logical relations [8], which give a precise characterisation of behavioural equivalence. We then consider a higher-order logic to reason about models of the simply typed lambda calculus, and relate the resulting standard satisfaction relation to behavioural satisfaction.

Keywords

Logical Relation Indistinguishability Relation Lambda Calculus Observable Type Lambda Abstraction 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2003

Authors and Affiliations

  • Shin-ya Katsumata
    • 1
  1. 1.Division of InformaticsUniversity of Edinburgh, King’s BuildingsEdinburghScotland

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