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Similarity relations and cover automata

Published online by Cambridge University Press:  15 March 2005

Jean-Marc Champarnaud
Affiliation:
LIFAR, Université de Rouen, France; [email protected]& [email protected] & [email protected]
Franck Guingne
Affiliation:
LIFAR, Université de Rouen, France; [email protected]& [email protected] & [email protected] XRCE, Xerox, 38240 Meylan, France; [email protected]
Georges Hansel
Affiliation:
LIFAR, Université de Rouen, France; [email protected]& [email protected] & [email protected]
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Abstract

Cover automata for finite languages have been much studied a few years ago. It turns out that a simple mathematical structure, namely similarity relations over a finite set of words, is underlying these studies. In the present work, we investigate in detail for themselves the properties of these relations beyond the scope of finite languages. New results with straightforward proofs are obtained in this generalized framework, and previous results concerning cover automata are obtained as immediate consequences.

Type
Research Article
Copyright
© EDP Sciences, 2005

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