2 00 7 Return Words in Fixed Points of Substitutions

نویسنده

  • WOLFGANG STEINER
چکیده

We present three simple ideas which enable to determine easily the number of return words in some infinite words. Using these ideas, we give a new and very short proof of the fact that each factor of an Arnoux-Rauzy word of order m has exactly m return words. We describe the structure of return words for the Thue-Morse sequence and focus on infinite words which are associated to simple Parry numbers.

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تاریخ انتشار 2007