Istituto di Scienza e Tecnologie dell'Informazione     
De Nicola R., Vaandrager F. Three logics for branching bisimulation. In: 5th Annual IEEE Symposium on Logic in Computer Science. (Philadelphia, PA, USA, 4 - 7 June 1990). Proceedings, pp. 118 - 129. IEEE, 1990.
Three temporal logics are introduced which induce on labeled transition systems the same identifications as branching bisimulation. The first is an extension of Hennessy-Milner logic with a kind of unit operator. The second is another extension of Hennessy-Milner logic which exploits the power of backward modalities. The third is CTL with the next-time operator interpreted over all paths, not just over maximal ones. A relevant side effect of the last characterization is that it sets a bridge between the state- and event-based approaches to the semantics of concurrent systems.

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