Abstract
We have developed a general definition of segregation in the context of Z system specifications. This definition is general enough to allow multi-way communications between otherwise segregated parties along defined channels. We have an abstract definition of segregation in terms of the traces allowed by systems, a concrete style of specification to ensure segregation (a generalisation of promotion called multi-promotion) and a proof that unconstrained multi-promotion is a sufficient condition to ensure segregation.
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Cooper, D., Stepney, S. (2000). Segregation with Communication. In: ZB 2000: Formal Specification and Development in Z and B. ZB 2000. Lecture Notes in Computer Science, vol 1878. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-44525-0_27
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DOI: https://doi.org/10.1007/3-540-44525-0_27
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