Quasi-open bisimilarity with mismatch is intuitionistic

Ross Horne, Ki Yung Ahn, Shang-wei Lin, Alwen Tiu

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

11 Citations (Scopus)
18 Downloads (Pure)

Abstract

Quasi-open bisimilarity is the coarsest notion of bisimilarity for the π-calculus that is also a congruence. This work extends quasi-open bisimilarity to handle mismatch (guards with inequalities). This minimal extension of quasi-open bisimilarity allows fresh names to be manufactured to provide constructive evidence that an inequality holds. The extension of quasi-open bisimilarity is canonical and robust --- coinciding with open barbed bisimilarity (an objective notion of bisimilarity congruence) and characterised by an intuitionistic variant of an established modal logic. The more famous open bisimilarity is also considered, for which the coarsest extension for handling mismatch is identified. Applications to checking privacy properties are highlighted. Examples and soundness results are mechanised using the proof assistant Abella.
Original languageEnglish
Title of host publicationProceedings of LICS '18: 33rd Annual ACM/IEEE Symposium on Logic in Computer Science, Oxford, United Kingdom, July 9-12, 2018 (LICS '18)
PublisherAssociation for Computing Machinery (ACM)
Pages26-35
Number of pages10
ISBN (Print)9781450355834
DOIs
Publication statusPublished - 9 Jul 2018
Event33rd Annual ACM/IEEE Symposium on Logic in Computer Science - LICS '18 - Oxford , United Kingdom
Duration: 9 Jul 201812 Jul 2018

Conference

Conference33rd Annual ACM/IEEE Symposium on Logic in Computer Science - LICS '18
Abbreviated titleLICS '18
Country/TerritoryUnited Kingdom
CityOxford
Period9/07/1812/07/18

Keywords

  • mismatch
  • bisimilarity
  • intuitionistic modal logic
  • theory of computation
  • process calculi
  • modal and temporal logics

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