Separation for dot-depth two

The dot-depth hierarchy of Brzozowski and Cohen classifies the star-free languages of finite words. By a theorem of McNaughton and Papert, these are also the first-order definable languages. The dot-depth rose to prominence following the work of Thomas, who proved an exact correspondence with the qu...

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Bibliographic Details
Main Authors: Thomas Place, Marc Zeitoun
Format: Article
Language:English
Published: Logical Methods in Computer Science e.V. 2021-09-01
Series:Logical Methods in Computer Science
Subjects:
Online Access:https://lmcs.episciences.org/5649/pdf