Expressive logics for coinductive predicates

Clemens Kupke, Jurriaan Rot

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Abstract

The classical Hennessy-Milner theorem says that two states of an image-finite transition system are bisimilar if and only if they satisfy the same formulas in a certain modal logic. In this paper we study this type of result in a general context, moving from transition systems to coalgebras and from bisimilarity to coinductive predicates. We formulate when a logic fully characterises a coinductive predicate on coalgebras, by providing suitable notions of adequacy and expressivity, and give sufficient conditions on the semantics. The approach is illustrated with logics characterising similarity, divergence and a behavioural metric on automata.
Original languageEnglish
Number of pages18
DOIs
Publication statusPublished - 16 Jan 2020
EventComputer Science Logic - Barcelona, Spain
Duration: 13 Jan 202016 Jan 2020
https://www.cs.upc.edu/csl2020/

Conference

ConferenceComputer Science Logic
Abbreviated titleCSL 2020
CountrySpain
CityBarcelona
Period13/01/2016/01/20
Internet address

Keywords

  • coalgebra
  • fibration
  • modal logic

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