| Issue |
RAIRO-Theor. Inf. Appl.
Volume 34, Number 4, July/August 2000
|
|
|---|---|---|
| Page(s) | 307 - 330 | |
| DOI | https://doi.org/10.1051/ita:2000119 | |
| Published online | 15 April 2002 | |
Semi-commutations and Partial commutations
1
LIFL, bâtiment M3, Cité Scientifique,
59655 Villeneuve-d'Ascq Cedex, France; (clerbout@lifl.fr)
2
LIFL, bâtiment M3, Cité Scientifique, 59655
Villeneuve-d'Ascq Cedex, France; (yroos@lifl.fr)
3
LIFL, bâtiment M3, Cité Scientifique, 59655
Villeneuve-d'Ascq Cedex, France; (ryl@lifl.fr)
Received:
21
June
2000
Accepted:
21
September
2000
The aim of this paper is to show that a semi-commutation function can be expressed as the compound of a sequential transformation, a partial commutation function, and the reverse transformation. Moreover, we give a necessary and sufficient condition for the image of a regular language to be computed by the compound of two sequential functions and a partial commutation function.
Mathematics Subject Classification: 68Q45 / 68Q85
© EDP Sciences, 2000
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