Concurrent histories: A basis for observing distributed systems

摘要

A new notion of transition systems, called distributed transition systems, is introduced, where states are sets of processes and transitions specify which processes stay idle. A notion of observations based on partial orderings, called concurrent histories, is defined on computations. Several observational equivalences, e.g., bisimulation, are given on observations. As case studies, Petri C/E systems and P/T nets, and Milner's CCS are translated to distributed transition systems.