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Displaying similar documents to “Compatibility relations on codes and free monoids”

Picture codes

Symeon Bozapalidis, Archontia Grammatikopoulou (2006)

RAIRO - Theoretical Informatics and Applications

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We introduce doubly-ranked (DR) monoids in order to study picture codes. We show that a DR-monoid is free iff it is pictorially stable. This allows us to associate with a set of pictures a picture code which is the basis of the least DR-monoid including . A weak version of the defect theorem for pictures is established. A characterization of picture codes through picture series is also given.

A hierarchy for circular codes

Giuseppe Pirillo (2008)

RAIRO - Theoretical Informatics and Applications

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We first prove an extremal property of the infinite Fibonacci word : the family of the palindromic prefixes {} of is not only a circular code but “almost” a comma-free one (see Prop. 12 in Sect. 4). We also extend to a more general situation the notion of a necklace introduced for the study of trinucleotides codes on the genetic alphabet, and we present a hierarchy relating two important classes of codes, the comma-free codes and the circular ones.

Finite completion of comma-free codes. Part 1

Nguyen Huong Lam (2004)

RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications

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This paper is the first step in the solution of the problem of finite completion of comma-free codes. We show that every finite comma-free code is included in a finite comma-free code of particular kind, which we called, for lack of a better term, canonical comma-free code. Certainly, finite maximal comma-free codes are always canonical. The final step of the solution which consists in proving further that every canonical comma-free code is completed to a finite maximal comma-free code,...

On coding morphisms for zigzag codes

Do Long Van, Bertrand Le Saëc, Igor Litovsky (1992)

RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications

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