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arXiv · 1702.05578

Two Lower Bounds for BPA

Qiang Yin·Mingzhang Huang·Chaodong He
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Abstract

Branching bisimilarity on normed Basic Process Algebra (BPA) was claimed to be EXPTIME-hard in previous papers without any explicit proof. Recently it is reminded by Jan\v{c}ar that the claim is not so dependable. In this paper, we develop a new complete proof for EXPTIME-hardness of branching bisimilarity on normed BPA. We also prove the associate regularity problem on normed BPA is PSPACE-hard and in EXPTIME. This improves previous P-hard and NEXPTIME result.

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Qiang Yin, Mingzhang Huang, Chaodong He. 2017-02-18. Two Lower Bounds for BPA. https://arxiv.org/abs/1702.05578

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