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Erschienen in:
2003 | OriginalPaper | Buchkapitel
Deriving Bisimulation Congruences: 2-Categories Vs Precategories
verfasst von : Vladimiro Sassone, Paweł Sobociśki
Erschienen in: Foundations of Software Science and Computation Structures
Verlag: Springer Berlin Heidelberg
Enthalten in: Professional Book Archive
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G-relative pushouts (GRPOs) have recently been proposed by the authors as a new foundation for Leifer and Milner's approach to deriving labelled bisimulation congruences from reduction systems. This paper develops the theory of GRPOs further, arguing that they provide a simple and powerful basis towards a comprehensive solution. As an example, we construct GRPOs in a category of ‘nches and wirings.’ then examine the approach based on Milner's precategories and Leifer's functorial reactive systems, and show that it can be recast in a much simpler way into the 2-categorical theory of GRPOs.