On the relative expressiveness of higher-order session processes

Kouzapas, D., Pérez, J. A. and Yoshida, N. (2016) On the relative expressiveness of higher-order session processes. In: 25th European Symposium on Programming, ESOP 2016, Eindhoven, The Netherlandd, 02-08 Apr 2016, pp. 446-475. ISBN 9783662494974 (doi:10.1007/978-3-662-49498-1_18)

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By integrating constructs from the λ-calculus and the π-calculus, in higher-order process calculi exchanged values may contain processes. This paper studies the relative expressiveness of HOπ, the higher-order π-calculus in which communications are governed by session types. Our main discovery is that HO, a subcalculus of HOπ which lacks name-passing and recursion, can serve as a new core calculus for session-typed higher-order concurrency. By exploring a new bisimulation for HO, we show that HO can encode HOπ fully abstractly (up to typed contextual equivalence) more precisely and efficiently than the first-order session π-calculus (π). Overall, under session types, HOπ, HO, and π are equally expressive; however, HOπ and HO are more tightly related than HOπ and π.

Item Type:Conference Proceedings
Glasgow Author(s) Enlighten ID:Kouzapas, Mr Dimitrios
Authors: Kouzapas, D., Pérez, J. A., and Yoshida, N.
Subjects:Q Science > QA Mathematics > QA75 Electronic computers. Computer science
College/School:College of Science and Engineering > School of Computing Science
Copyright Holders:Copyright © 2016 Springer-Verlag Berlin Heidelberg
First Published:First published in Programming Languages and Systems : 446-475
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
612411From Data Types to Session Types - A Basis for Concurrency and Distribution.Simon GayEngineering & Physical Sciences Research Council (EPSRC)EP/K034413/1COM - COMPUTING SCIENCE
614451Exploiting Parallelism through Type Transformations for Hybrid Manycore Systems.Wim VanderbauwhedeEngineering & Physical Sciences Research Council (EPSRC)EP/L00058X/1COM - COMPUTING SCIENCE