Z User Workshop, Oxford 1990
Broschiertes Buch

Z User Workshop, Oxford 1990

Proceedings of the Fifth Annual Z User Meeting, Oxford, 17-18 December 1990

Herausgegeben von Nicholls, J.E.
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The approach described in [JonSl, JonS3a, JonS3b] set out to extend operation decom position methods for sequential programs - such as are used in VDM [Jon90] - to cover concurrent shared-variable systems. The essential step in [JonSl] was to recognise that 1 inter/erence had to be specified. This is necessary in order to achieve a notion of compo sitionality - contrast [Owi75]. Rather than the many erudite definitions of composition ality (e. g. [ZwiSS]), the view taken here is that, when a development task is decomposed into sub-tasks, these must be simpler than the original 'task. This is e...