Sequential Composition in the Presence of Intermediate Termination (Extended Abstract)

The standard operational semantics of the sequential composition operator gives rise to unbounded branching and forgetfulness when transparent process expressions are put in sequence. Due to transparency, the correspondence between context-free and pushdown processes fails modulo bisimilarity, and i...

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Bibliographic Details
Published in:Electronic proceedings in theoretical computer science 2017-08, Vol.255 (Proc. EXPRESS/SOS 2017), p.1-17
Main Authors: Baeten, Jos, Luttik, Bas, Yang, Fei
Format: Article
Language:English
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Summary:The standard operational semantics of the sequential composition operator gives rise to unbounded branching and forgetfulness when transparent process expressions are put in sequence. Due to transparency, the correspondence between context-free and pushdown processes fails modulo bisimilarity, and it is not clear how to specify an always terminating half counter. We propose a revised operational semantics for the sequential composition operator in the context of intermediate termination. With the revised operational semantics, we eliminate transparency, allowing us to establish a close correspondence between context-free processes and pushdown processes. Moreover, we prove the reactive Turing powerfulness of TCP with iteration and nesting with the revised operational semantics for sequential composition.
ISSN:2075-2180
2075-2180
DOI:10.4204/EPTCS.255.1