## Modal Logic and the Approximation Induction Principle

 Maciej Gazda Wan Fokkink

 We prove a compactness theorem in the context of Hennessy-Milner logic. It is used to derive a sufficient condition on modal characterizations for the Approximation Induction Principle to be sound modulo the corresponding process equivalence. We show that this condition is necessary when the equivalence in question is compositional with respect to the projection operators.

In Sibylle Fröschle and Daniele Gorla: Proceedings 16th International Workshop on Expressiveness in Concurrency (EXPRESS 2009), Bologna, Italy, 5th September 2009, Electronic Proceedings in Theoretical Computer Science 8, pp. 41–50.
Published: 17th November 2009.

 ArXived at: http://dx.doi.org/10.4204/EPTCS.8.4 bibtex PDF

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