Input- or output-unary sweeping transducers are weaker than their 2-way counterparts
Guillon, Bruno1
1 LIAFA, Université Paris-Diderot, Paris 7, Paris, France
RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications, 7th Non-Classical Models of Automata and Applications (NCMA-2015) , Tome 50 (2016) no. 4, pp. 275-294.

In a previous paper we showed that two-way (nondeterministic) transducers with unary input and output alphabets have the same recognition power as the sweeping ones. We show that this no longer holds when one of the alphabets has cardinality at least 2.

Reçu le :
Accepté le :
DOI : 10.1051/ita/2016028
Classification : 68Q70
Mots-clés : Unary alphabets, Hadamard relations, two-way, sweeping transducers
Guillon, Bruno 1

1 LIAFA, Université Paris-Diderot, Paris 7, Paris, France 
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Guillon, Bruno. Input- or output-unary sweeping transducers are weaker than their 2-way counterparts. RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications, 7th Non-Classical Models of Automata and Applications (NCMA-2015) , Tome 50 (2016) no. 4, pp. 275-294. doi : 10.1051/ita/2016028. http://www.numdam.org/articles/10.1051/ita/2016028/

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