Steen, Maarten and Bowman, Howard and Derrick, John and Boiten, Eerke Albert
Disjunction of LOTOS specifications.
In: Mizuno, Tadanori and Shiratori, Norio and Higashino, Teruo and Togashi, Atsushi, eds.
IFIP Conference Proceedings; Vol. 107.
Chapman & Hall, Osaka, Japan
ISBN 0-412-82060-9 .
(Full text available)
LOTOS is a formal specification language, designed for the precise description of open distributed systems and protocols. The definition of, so called, implementation relations has made it possible also to use LOTOS as a specification technique for the design of such systems. These LOTOS based specification techniques usually (ab)use non-determinism to achieve implementation freedom. Unfortunately, this is unsatisfactory when specifying non-deterministic processes. We, therefore, propose to extend LOTOS with a disjunction operator in order to achieve more implementation freedom while maintaining the possibility to describe non-deterministic processes. In contrast with similar proposals we maintain the operational semantics.
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