Closures of regular languages for profinite topologies

The Pin-Reutenauer algorithm gives a method, that can be viewed as a descriptive procedure, to compute the closure in the free group of a regular language with respect to the Hall topology. A similar descriptive procedure is shown to hold for the pseudovariety A of aperiodic semigroups, where the cl...

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Bibliographic Details
Main Author: Almeida, Jorge (author)
Other Authors: Costa, José Carlos (author), Zeitoun, Marc (author)
Format: article
Language:eng
Published: 2014
Subjects:
Online Access:http://hdl.handle.net/1822/27493
Country:Portugal
Oai:oai:repositorium.sdum.uminho.pt:1822/27493