Characteristic bisimulation for higher-order session processes

Dimitrios Kouzapas, Jorge A. Pérez, Nobuko Yoshida
2016 Acta Informatica  
For higher-order (process) languages, characterising contextual equivalence is a long-standing issue. In the setting of a higher-order π -calculus with session types, we develop characteristic bisimilarity, a typed bisimilarity which fully characterises contextual equivalence. To our knowledge, ours is the first characterisation of its kind. Using simple values inhabiting (session) types, our approach distinguishes from untyped methods for characterising contextual equivalence in higher-order
more » ... ocesses: we show that observing as inputs only a precise finite set of higher-order values suffices to reason about higher-order session processes. We demonstrate how characteristic bisimilarity can be used to justify optimisations in session protocols with mobile code communication.
doi:10.1007/s00236-016-0289-7 pmid:32103830 pmcid:PMC7010397 fatcat:2mhbxewq3rczdjjtbpqsl4if4q