Adding mobility to software architectures
Science of Computer Programming - Special issue on second international workshop on foundations of coordination languages and software architectures (FOCLASA'03)
Verifying temporal properties of community designs
IFM'07 Proceedings of the 6th international conference on Integrated formal methods
Design in CommUnity with extension morphisms
Formal methods and hybrid real-time systems
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The traditional notion of superposition has been used for supporting two distinct aspects of parallel program design: composition and refinement. This is because, when trace-based semantics of concurrency are considered, which is typical of most formal methods, these two relationships are modelled as inclusion between sets of behaviours. However, when forms of non-deterministic behaviour have to be considered, which is the case for component and service-based development, these two aspects do not coincide. In this paper, we show how the two roles of superposition can be separated and supported at the language and semantic levels. For this purpose, we use a categorical formalisation of program design in the language CommUnity that we are also using for addressing architectural concerns, another area in which the distinction between composition and refinement is particularly important.