2007, English, Article edition: The monadic theory of finite representations of infinite words Dawar, Anuj; Janin, David

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Bookmark: http://trove.nla.gov.au/version/199575
Physical Description
  • text
Published
  • HAL - CCSD
  • 2007
Language
  • English

Edition details

Title
  • The monadic theory of finite representations of infinite words
Author
  • Dawar, Anuj
  • Janin, David
Published
  • HAL - CCSD
  • 2007
Physical Description
  • text
Subjects
Notes
  • In this paper, we consider existential monadic second-order logic on finite unary graphs, that is finite graphs with functional edge relation. These can be seen as finite encodings of ultimately periodic words. We show that, on these graphs, the bisimulation-invariant fragment of monadic equals the bisimulation-invariant fragment of monadic second-order logic itself, and that MSO-definable bisimulation closed classes of graphs coincide with classes of graphs definable by means of (an extension of) finite state word automata. This result can be seen as a translation, onto finite representations of infinite words, of Buchi's automata-theoretic characterization. In terms of descriptive complexity, this result contrasts with the situation on arbitrary unary structures where bisimulation invariant monadic properties only define languages that are closed with respect to the prefix topology.
  • HAL:hal-00306381, version 1
  • HAL:http:/​/​hal.archives-ouvertes.fr/​hal-00306381/​en/​
Language
  • English
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