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Erschienen in:
2009 | OriginalPaper | Buchkapitel
Foundations of Concurrent Kleene Algebra
verfasst von : C. A. R. Hoare, Bernhard Möller, Georg Struth, Ian Wehrman
Erschienen in: Relations and Kleene Algebra in Computer Science
Verlag: Springer Berlin Heidelberg
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A Concurrent Kleene Algebra offers two composition operators, one that stands for sequential execution and the other for concurrent execution [10]. In this paper we investigate the abstract background of this law in terms of independence relations on which a concrete trace model of the algebra is based. Moreover, we show the interdependence of the basic properties of such relations and two further laws that are essential in the application of the algebra to a Jones style rely/guarantee calculus. Finally we reconstruct the trace model in a more abstract setting based on the notion of atoms from lattice theory.