Branching Bisimilarity of Normed BPA Processes is in NEXPTIME

Published 2 Jul 2014 in cs.LO and cs.FL | (1407.0645v2)

Abstract: Branching bisimilarity on normed BPA processes was recently shown to be decidable by Yuxi Fu (ICALP 2013) but his proof has not provided any upper complexity bound. We present a simpler approach based on relative prime decompositions that leads to a nondeterministic exponential-time algorithm; this is close to the known exponential-time lower bound.

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