Unifying concurrent and relational refinement

Boiten, Eerke Albert and Derrick, John (2002) Unifying concurrent and relational refinement. Electronic Notes in Theoretical Computer Science, 70 (3). pp. 94-131. ISSN 1571-0661. (doi:https://doi.org/10.1016/S1571-0061(05)80488-8) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Refinement in a concurrent context, as typified by a process algebra, takes a number of different forms depending on what is considered observable, where observations record, for example, which events a system is prepared to accept or refuse. Examples of concurrent refinement relations include trace refinement, failures-divergences refinement and bisimulation. Refinement in a state-based language such as Z, on the other hand, is defined using a relational model in terms of input/output behaviour of abstract programs. These refinements are verified by using two simulation rules which help make the verification tractable. The purpose of this paper is to unify these two standpoints, and we do so by generalising the standard relational model to include additional observable aspects. The central result of the paper is then to develop simulation rules to verify relations such as failures-divergences refinement in a relational setting, and show how these might be applied in a specification language such as Z. http://www.elsevier.com/gej-ng/31/29/23/125/48/show/Products/notes/index.htt

Item Type: Article
Additional information: REFINE 02: The BCS FACS Refinement Workshop
Uncontrolled keywords: refinement, Z, CSP, Object-Z, failures-divergences
Subjects: Q Science > QA Mathematics (inc Computing science) > QA 76 Software, computer programming,
Divisions: Faculties > Sciences > School of Computing > Theoretical Computing Group
Faculties > Sciences > School of Computing > Systems Architecture Group
Depositing User: E.A. Boiten
Date Deposited: 24 Nov 2008 18:00 UTC
Last Modified: 05 Dec 2015 23:02 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/13766 (The current URI for this page, for reference purposes)
Boiten, Eerke Albert: https://orcid.org/0000-0002-9184-8968
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