# Undecidability of bisimilarity by defender's forcing

@article{Jancar2008UndecidabilityOB, title={Undecidability of bisimilarity by defender's forcing}, author={P. Jancar and J. Srba}, journal={J. ACM}, year={2008}, volume={55}, pages={5:1-5:26} }

Stirling [1996, 1998] proved the decidability of bisimilarity on so-called normed pushdown processes. This result was substantially extended by Sénizergues [1998, 2005] who showed the decidability of bisimilarity for regular (or equational) graphs of finite out-degree; this essentially coincides with weak bisimilarity of processes generated by (unnormed) pushdown automata where the ϵ-transitions can only deterministically pop the stack. The question of decidability of bisimilarity for the more… Expand

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Abstract The problem if a given configuration of a pushdown automaton (PDA) is bisimilar with some (unspecified) finite-state process is shown to be decidable. The decidability is proven in the… Expand

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Sénizergues proved that language equivalence is decidable for disjoint -deterministic pushdown automata (PDA). Stirling showed that strong bisimilarity is decidable for normed PDA. Sénizergues… Expand

Selected Ideas Used for Decidability and Undecidability of Bisimilarity

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The problem if a given configuration of a pushdown automaton (PDA) is
bisimilar with some (unspecified) finite-state process is shown to be
decidable. The decidability is proven in the framework of… Expand

The Decidability of-Pushing PDA

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Stirling 1996, 1998 proved the decidability of bisimilarity on so-called normed pushdown processes. This result was substantially extended by Snizergues 1998, 2005 who showed the decidability of bi...

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