The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

Currently displaying 1 – 6 of 6

Showing per page

Order by Relevance | Title | Year of publication

On shuffle ideals

Pierre-Cyrille Héam — 2002

RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications

A shuffle ideal is a language which is a finite union of languages of the form A * a 1 A * A * a k A * where A is a finite alphabet and the a i ’s are letters. We show how to represent shuffle ideals by special automata and how to compute these representations. We also give a temporal logic characterization of shuffle ideals and we study its expressive power over infinite words. We characterize the complexity of deciding whether a language is a shuffle ideal and we give a new quadratic algorithm for this problem. Finally...

A Lower Bound For Reversible Automata

Pierre-Cyrille Héam — 2010

RAIRO - Theoretical Informatics and Applications

A reversible automaton is a finite automaton in which each letter induces a partial one-to-one map from the set of states into itself. We solve the following problem proposed by Pin. Given an alphabet , does there exist a sequence of languages on which can be accepted by a reversible automaton, and such that the number of states of the minimal automaton of is in (), while the minimal number of states of a reversible automaton accepting ...

On Shuffle Ideals

Pierre-Cyrille Héam — 2010

RAIRO - Theoretical Informatics and Applications


A shuffle ideal is a language which is a finite union of languages of the form where is a finite alphabet and the 's are letters. We show how to represent shuffle ideals by special automata and how to compute these representations. We also give a temporal logic characterization of shuffle ideals and we study its expressive power over infinite words. We characterize the complexity of deciding whether a language is a shuffle ideal and we give a new quadratic algorithm for...

Efficiency of automata in semi-commutation verification techniques

Gérard CécéPierre-Cyrille HéamYann Mainier — 2008

RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications

Computing the image of a regular language by the transitive closure of a relation is a central question in regular model checking. In a recent paper Bouajjani et al. [IEEE Comput. Soc. (2001) 399–408] proved that the class of regular languages L – called APC – of the form j L 0 , j L 1 , j L 2 , j ... L k j , j , where the union is finite and each L i , j is either a single symbol or a language of the form B * with B a subset of the alphabet, is closed under...

Efficiency of automata in semi-commutation verification techniques

Gérard CécéPierre-Cyrille HéamYann Mainier — 2007

RAIRO - Theoretical Informatics and Applications

Computing the image of a regular language by the transitive closure of a relation is a central question in regular model checking. In a recent paper Bouajjani [ (2001) 399–408] proved that the class of regular languages – called APC – of the form U ..., where the union is finite and each is either a single symbol or a language of the form with a subset of the alphabet, is closed under all semi-commutation relations . Moreover a recursive...

Page 1

Download Results (CSV)