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arxiv: 0708.4217 · v1 · pith:A4N2YWECnew · submitted 2007-08-30 · 🧮 math.CO

A note on the Markoff condition and central words

classification 🧮 math.CO
keywords wordsmarkoffcentralconditionappearingbi-infinitecertaincharacterization
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We define Markoff words as certain factors appearing in bi-infinite words satisfying the Markoff condition. We prove that these words coincide with central words, yielding a new characterization of Christoffel words.

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