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词汇 Recurrent word
分类 英语词汇 英语翻译词典
释义

Recurrent word

英语百科

Recurrent word

In mathematics, a recurrent word or sequence is an infinite word over a finite alphabet in which every factor occurs infinitely often. An infinite word is recurrent if and only if it is a sesquipower.

A uniformly recurrent word is a recurrent word in which for any given factor X in the sequence, there is some length nX (often much longer than the length of X) such that X appears in every block of length n: the term minimal sequence or almost periodic sequence(Muchnik, Semenov, Ushakov 2003) is also used.

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