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2002 | OriginalPaper | Buchkapitel

Higher-Order Pushdown Trees Are Easy

verfasst von : Teodor Knapik, Damian Niwiński, Paweł Urzyczyn

Erschienen in: Foundations of Software Science and Computation Structures

Verlag: Springer Berlin Heidelberg

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We show that the monadicsec ond-order theory of an infinite tree recognized by a higher-order pushdown automaton of any level is decidable. We also show that trees recognized by pushdown automata of level n coincide with trees generated by safe higher-order grammars of level n. Our decidability result extends the result of Courcelle on algebraic(pushdo wn of level 1) trees and our own result on trees of level 2.

Metadaten
Titel
Higher-Order Pushdown Trees Are Easy
verfasst von
Teodor Knapik
Damian Niwiński
Paweł Urzyczyn
Copyright-Jahr
2002
Verlag
Springer Berlin Heidelberg
DOI
https://doi.org/10.1007/3-540-45931-6_15