Linking theories of concurrency
We construct a Galois connection between the theories that underlie CCS  and CSP . It projects the complete transition system for CCS onto exactly the subset that satisfies the healthiness conditions of CSP. The construction applies to several varieties of both calculi: CCS with strong, weak or barbed simulation, and CSP with trace refinement or failures refinement, or failures/divergence. We suggest the challenge of linking other theories of concurrency by Galois connection. © Springer-Verlag Berlin Heidelberg 2005.