Equivalence of pushdown automata via first-order grammars

Petr Jancar

doi:10.1016/j.jcss.2020.07.004

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arXiv · 1812.03518

Equivalence of pushdown automata via first-order grammars

Petr Jancar

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Abstract

A decidability proof for bisimulation equivalence of first-order grammars is given. It is an alternative proof for a result by S\'enizergues (1998, 2005) that subsumes his affirmative solution of the famous decidability question for deterministic pushdown automata. The presented proof is conceptually simpler, and a particular novelty is that it is not given as two semidecision procedures but it provides an explicit algorithm that might be amenable to a complexity analysis.

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Petr Jancar. 2018-12-09. Equivalence of pushdown automata via first-order grammars. https://doi.org/10.1016/j.jcss.2020.07.004

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