Weak Bisimulation for Action-Type Coalgebras (Extended Abstract)
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Sokolova, Ana
[1
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de Vink, Erik
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Eindhoven Univ Technol, LIACS Leiden Univ, Dept Math & Comp Sci, TU E, Leiden, NetherlandsEindhoven Univ Technol, TU E, Dept Math & Comp Sci, Eindhoven, Netherlands
de Vink, Erik
[2
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Woracek, Harald
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TU Vienna, Dept Anal & Sci Comp, Vienna, AustriaEindhoven Univ Technol, TU E, Dept Math & Comp Sci, Eindhoven, Netherlands
Woracek, Harald
[3
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机构:
[1] Eindhoven Univ Technol, TU E, Dept Math & Comp Sci, Eindhoven, Netherlands
[2] Eindhoven Univ Technol, LIACS Leiden Univ, Dept Math & Comp Sci, TU E, Leiden, Netherlands
[3] TU Vienna, Dept Anal & Sci Comp, Vienna, Austria
We propose a coalgebraic definition of weak bisimulation for a class of coalgebras obtained from bifunctors over the category Set. Weak bisimilarity for a system is obtained as strong bisimilarity of a transformed system. The transformation consists of two steps: First, the behaviour on actions is expanded to behaviour on finite words. Second, the behaviour on finite words is taken modulo the hiding of invisible actions, yielding behaviour on equivalence classes of words closed under silent steps. The coalgebraic definition is justified by two correspondence results, one for the classical notion of weak bisimulation of Milner and another for the notion of weak bisimulation for generative probabilistic transition systems as advocated by Baier and Hermanns.