The Power of the Weak
The Power of the Weak
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弱者的力量
DOI:
10.1145/3372392
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发表时间:
2020
影响因子:
0.5
通讯作者:
Carreiro F
中科院分区:
文献类型:
--
作者:
Carreiro F
A landmark result in the study of logics for formal verification is Janin and Walukiewicz’s theorem, stating that the modal μ-calculus (μML) is equivalent modulo bisimilarity to standard monadic second-order logic (here abbreviated as SMSO) over the class of labelled transition systems (LTSs for short). Our work proves two results of the same kind, one for the alternation-free ornoetherianfragment μNML of μML on the modal side and one for WMSO, weak monadic second-order logic, on the second-order side. In the setting of binary trees, with explicit functions accessing the left and right successor of a node, it was known that WMSO is equivalent to the appropriate version of alternation-free μ-calculus. Our analysis shows that the picture changes radically once we consider, as Janin and Walukiewicz did, the standard modal μ-calculus, interpreted over arbitrary LTSs.The first theorem that we prove is that, over LTSs, μNML is equivalent modulo bisimilarity tonoetherianMSO (NMSO), a newly introduced variant of SMSO where second-order quantification ranges over “conversely well-founded” subsets only. Our second theorem starts from WMSO and proves it equivalent modulo bisimilarity to a fragment of μNML defined by a notion of continuity. Analogously to Janin and Walukiewicz’s result, our proofs are automata-theoretic in nature: As another contribution, we introduce classes of parity automata characterising the expressiveness of WMSO and NMSO (on tree models) and of μCML and μNML (for all transition systems).
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DOI:
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发表时间:
2012
期刊:
影响因子:
--
作者:
Fabio Zanasi;J. V. Benthem;Alessandro Facchini;Helle Hvid Hansen;Benedikt Löwe;Y. Venema
通讯作者:
Y. Venema
DOI:
10.1007/978-3-642-22993-0_28
发表时间:
2011
期刊:
Fundam. Informaticae
影响因子:
--
作者:
B. T. Cate;Alessandro Facchini
通讯作者:
Alessandro Facchini
影响因子:
0.3
作者:
Facundo Carreiro;Alessandro Facchini;Y. Venema;F. Zanasi
通讯作者:
F. Zanasi
DOI:
10.1109/lics.2013.54
发表时间:
2013
期刊:
2013 28th Annual ACM/IEEE Symposium on Logic in Computer Science
影响因子:
--
作者:
Alessandro Facchini;Y. Venema;F. Zanasi
通讯作者:
F. Zanasi
DOI:
10.1007/3-540-61604-7_60
发表时间:
1996-08
期刊:
--
影响因子:
--
作者:
David Janin;I. Walukiewicz
通讯作者:
David Janin;I. Walukiewicz