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A remark on morphic Sturmian words. (English) Zbl 0883.68104

Summary: This note deals with binary Sturmian words that are morphic, i.e. generated by iterating a morphism. Among these, characteristic words are a well-known subclass. We prove that for every characteristic morphic word \(x\), the four words \(ax\), \(bx\), \(abx\) and \(bax\) are morphic.

MSC:

68R15 Combinatorics on words
68Q45 Formal languages and automata
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