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arXiv 1707.01010math.COcs.FL
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Ins-Robust原始词

Ins-Robust Primitive Words

Amit Kumar Srivastava, Kalpesh Kapoor

摘要:

设Q是一个至少有两个符号的有限字母表上的本原词集合。我们刻画了一类本原词Q_I,称为ins-鲁棒本原词,它在插入字母表中的任何字母时保持本原,并给出了刻画集合Q_I中词的一些性质.证明了语言Q_I是稠密的。我们证明了语言的原始词,不ins-鲁棒的是不是上下文无关的。我们还提出了一个线性时间算法来识别ins-鲁棒原始字,并给出了一个下界的数量n-长度ins-鲁棒原始字。

英文摘要:

Let Q be the set of primitive words over a finite alphabet with at least two symbols. We characterize a class of primitive words, Q_I, referred to as ins-robust primitive words, which remain primitive on insertion of any letter from the alphabet and present some properties that characterizes words in the set Q_I. It is shown that the language Q_I is dense. We prove that the language of primitive words that are not ins-robust is not context-free. We also present a linear time algorithm to recognize ins-robust primitive words and give a lower bound on the number of n-length ins-robust primitive words.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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