Regular Languages of Nested Words: Fixed Points, Automata, and Synchronization
Regular Languages of Nested Words: Fixed Points, Automata, and Synchronization
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嵌套词的正则语言:不动点、自动机和同步
DOI:
10.1007/s00224-010-9292-5
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发表时间:
2010
影响因子:
0.5
通讯作者:
Arenas M
中科院分区:
文献类型:
--
作者:
Arenas M
Nested words provide a natural model of runs of programs with recursive procedure calls. The usual connection between monadic second-order logic (MSO) and automata extends from words to nested words and gives us a natural notion of regular languages of nested words.In this paper we look at some well-known aspects of regular languages—their characterization via fixed points, deterministic and alternating automata for them, and synchronization for defining regular relations—and extend them to nested words. We show that mu-calculus is as expressive as MSO over finite and infinite nested words, and the equivalence holds, more generally, for mu-calculus with past modalities evaluated in arbitrary positions in a word, not only in the first position. We introduce the notion of alternating automata for nested words, show that they are as expressive as the usual automata, and also prove that Muller automata can be determinized (unlike in the case of visibly pushdown languages). Finally we look at synchronization over nested words. We show that the usual letter-to-letter synchronization is completely incompatible with nested words (in the sense that even the weakest form of it leads to an undecidable formalism) and present an alternative form of synchronization that gives us decidable notions of regular relations.
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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
DOI:
--
发表时间:
1988
期刊:
[1988] Proceedings. Third Annual Information Symposium on Logic in Computer Science
影响因子:
--
作者:
D. Niwinski
通讯作者:
D. Niwinski
DOI:
--
发表时间:
2006
期刊:
International Conference on Computer Aided Verification
影响因子:
--
作者:
R. Alur;Swarat Chaudhuri;P. Madhusudan
通讯作者:
P. Madhusudan
DOI:
--
发表时间:
2006
期刊:
Symposium on Theoretical Aspects of Computer Science
影响因子:
--
作者:
V. Bárány;Christof Löding;O. Serre
通讯作者:
O. Serre
DOI:
--
发表时间:
2002
期刊:
ACM SIGACT-SIGMOD-SIGART Symposium on Principles of Database Systems
影响因子:
--
作者:
L. Segoufin;V. Vianu
通讯作者:
V. Vianu