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On a complete set of operations for factorizing codes

Clelia De Felice — 2006

RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications

It is known that the class of factorizing codes, i.e., codes satisfying the factorization conjecture formulated by Schützenberger, is closed under two operations: the classical composition of codes and substitution of codes. A natural question which arises is whether a finite set 𝒪 of operations exists such that each factorizing code can be obtained by using the operations in 𝒪 and starting with prefix or suffix codes. 𝒪 is named here a complete set of operations (for factorizing codes). We show...

On a complete set of operations for factorizing codes

Clelia De Felice — 2010

RAIRO - Theoretical Informatics and Applications

It is known that the class of , , codes satisfying the formulated by Schützenberger, is closed under two operations: the classical of codes and of codes. A natural question which arises is whether a finite set of operations exists such that each factorizing code can be obtained by using the operations in and starting with prefix or suffix codes. is named here a of operations (for factorizing codes). We show that composition and substitution are not enough in order to obtain a complete set....

Circular splicing and regularity

Paola BonizzoniClelia De FeliceGiancarlo MauriRosalba Zizza — 2004

RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications

Circular splicing has been very recently introduced to model a specific recombinant behaviour of circular DNA, continuing the investigation initiated with linear splicing. In this paper we restrict our study to the relationship between regular circular languages and languages generated by finite circular splicing systems and provide some results towards a characterization of the intersection between these two classes. We consider the class of languages X * , called here star languages, which are closed...

Circular splicing and regularity

Paola BonizzoniClelia De FeliceGiancarlo MauriRosalba Zizza — 2010

RAIRO - Theoretical Informatics and Applications

has been very recently introduced to model a specific recombinant behaviour of circular DNA, continuing the investigation initiated with linear splicing. In this paper we restrict our study to the relationship between and languages generated by and provide some results towards a characterization of the intersection between these two classes. We consider the class of languages , called here , which are closed under conjugacy relation and with being a regular language. Using automata...

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