Refining Undecidability Border of Weak Bisimilarity.

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Authors

KŘETÍNSKÝ Mojmír ŘEHÁK Vojtěch STREJČEK Jan

Year of publication 2005
Type Article in Periodical
Magazine / Source BRICS Notes Series
MU Faculty or unit

Faculty of Informatics

Citation
Web http://www.brics.dk/NS/05/4/
Field Informatics
Keywords process rewrite systems; state extension; infinite-state; (un)decidability; weak bisimulation
Description Weak bisimilarity is one of the most studied behavioural equivalences. This equivalence is undecidable for pushdown processes (PDA), process algebras(PA), and multiset automata (MSA, also known as parallel pushdown processes, PPDA). Its decidability is an open question basic process algebras} (BPA) and basic parallel processes (BPP). We move the undecidability border towards these classes by showing that the equivalence remains undecidable for weakly extended versions of BPA and BPP.
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