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Aperiodic Two-way Transducers and FO-Transductions

Authors Olivier Carton, Luc Dartois

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Olivier Carton
Luc Dartois

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Olivier Carton and Luc Dartois. Aperiodic Two-way Transducers and FO-Transductions. In 24th EACSL Annual Conference on Computer Science Logic (CSL 2015). Leibniz International Proceedings in Informatics (LIPIcs), Volume 41, pp. 160-174, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2015) https://doi.org/10.4230/LIPIcs.CSL.2015.160

Abstract

Deterministic two-way transducers on finite words have been shown by Engelfriet and Hoogeboom to have the same expressive power as MSO-transductions. We introduce a notion of aperiodicity for these transducers and we show that aperiodic transducers correspond exactly to FO-transductions. This lifts to transducers the classical equivalence for languages between FO-definability, recognition by aperiodic monoids and acceptance by counter-free automata.

Subject Classification

Keywords
  • Transducer
  • first-order
  • two-way
  • transition monoid
  • aperiodic

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