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Piecewise testable tree languages

Abstract : This paper presents a decidable characterization of tree languages that can be defined by a boolean combination of Σ1 sentences. This is a tree extension of the Simon theorem, which says that a string language can be defined by a boolean combination of Σ1 sentences if and only if its syntactic monoid is J-trivial.
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https://hal.inria.fr/hal-01160458
Contributor : Luc Segoufin Connect in order to contact the contributor
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  • HAL Id : hal-01160458, version 1

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Mikołaj Bojańczyk, Luc Segoufin, Howard Straubing. Piecewise testable tree languages. Logical Methods in Computer Science, Logical Methods in Computer Science Association, 2012, 8 (3), pp.29. ⟨hal-01160458⟩

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