Regular Resynchronizability of Origin Transducers Is Undecidable

Denis Kuperberg, Jan Martens

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

1 Citaat (Scopus)


We study the relation of containment up to unknown regular resynchronization between two-way non-deterministic transducers. We show that it constitutes a preorder, and that the corresponding equivalence relation is properly intermediate between origin equivalence and classical equivalence. We give a syntactical characterization for containment of two transducers up to resynchronization, and use it to show that this containment relation is undecidable already for one-way non-deterministic transducers, and for simple classes of resynchronizations. This answers the open problem stated in recent works, asking whether this relation is decidable for two-way non-deterministic transducers.

Originele taal-2Engels
Titel45th International Symposium on Mathematical Foundations of Computer Science (MFCS 2020)
RedacteurenJavier Esparza, Daniel Král
UitgeverijSchloss Dagstuhl - Leibniz-Zentrum für Informatik
ISBN van geprinte versie978-3-95977-159-7
StatusGepubliceerd - 1 aug. 2020

Publicatie series

NaamLeibniz International Proceedings in Informatics (LIPIcs)

Bibliografische nota

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