Models of Concurrent Systems 39 hours. Principles and basic concepts of concurrent systems. An introduction based on Milner's CCS. Transition systems, operational semantics, bisimulation. Expansion theorem, axiomatization. Interleaving vs. true concurrency. Other process algebras like CSP, ACP, Pi-calculus and some specialized ones as probabilistic, real-time, priorities etc. Connections to different models as Petri nets, Event structures, traces and so on.