Separating Regular Languages with First-Order Logic

Given two languages, a separator is a third language that contains the first one and is disjoint from the second one. We investigate the following decision problem: given two regular input languages of finite words, decide whether there exists a first-order definable separator. We prove that in orde...

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Bibliographic Details
Main Authors: Thomas Place, Marc Zeitoun
Format: Article
Language:English
Published: Logical Methods in Computer Science e.V. 2016-03-01
Series:Logical Methods in Computer Science
Subjects:
Online Access:https://lmcs.episciences.org/1628/pdf