From Branching to Linear Time, Coalgebraically

Corina Cirstea
(University of Southampton)

We consider state-based systems modelled as coalgebras whose type incorporates branching, and show that by suitably adapting the definition of coalgebraic bisimulation, one obtains a general and uniform account of the linear-time behaviour of a state in such a coalgebra. By moving away from a boolean universe of truth values, our approach can measure the extent to which a state in a system with branching is able to exhibit a particular linear-time behaviour. This instantiates to measuring the probability of a specific behaviour occurring in a probabilistic system, or measuring the minimal cost of exhibiting a specific behaviour in the case of weighted computations.

In David Baelde and Arnaud Carayol: Proceedings Workshop on Fixed Points in Computer Science (FICS 2013), Turino, Italy, September 1st, 2013, Electronic Proceedings in Theoretical Computer Science 126, pp. 11–27.
Published: 28th August 2013.

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