Issue |
RAIRO-Theor. Inf. Appl.
Volume 39, Number 1, January-March 2005
Imre Simon, the tropical computer scientist
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Page(s) | 207 - 215 | |
DOI | https://doi.org/10.1051/ita:2005012 | |
Published online | 15 March 2005 |
Episturmian morphisms and a Galois theorem on continued fractions
1
Present address: 19 rue de Bagneux, 92330 Sceaux, France.
2
LIAFA, ERS 586, Université Paris VII, case 7014, 2 place Jussieu, 75251 Paris Cedex 5, France; justin@liafa.jussieu.fr
We associate with a word w on a finite alphabet A an episturmian (or Arnoux-Rauzy) morphism and a palindrome. We study their relations with the similar ones for the reversal of w. Then when |A|=2 we deduce, using the Sturmian words that are the fixed points of the two morphisms, a proof of a Galois theorem on purely periodic continued fractions whose periods are the reversal of each other.
Mathematics Subject Classification: 11A55 / 68R15
Key words: Episturmian morphism / Arnoux-Rauzy morphism / palindrome / continued fraction / Sturmian word.
© EDP Sciences, 2005
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