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首页> 外文期刊>Journal of the Association for Computing Machinery >On the Generating Sequences of Regular Languages on k Symbols
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On the Generating Sequences of Regular Languages on k Symbols

机译:关于k个符号上的常规语言的生成序列

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摘要

The main result is a characterization of the generating sequences of the length of words in a regular language on k symbols. We say that a sequence s of integers is regular if there is a finite graph G with two vertices i, t such that s_n is the number of paths of length n from i to t in G. Thus the generating sequence of a regular language is regular. We prove that a sequence s is the generating sequence of a regular language on k symbols if and only if both sequences s = (s_n)_(n≥0) and t = (k~n ― s_n)_(n≥0) are regular.
机译:主要结果是在k个符号上表征了常规语言中单词长度的生成序列。我们说,如果存在一个具有两个顶点i,t的有限图G,则整数序列s是正则的,这样s_n是G中从i到t的长度为n的路径数。因此,规则语言的生成序列为定期。我们证明当且仅当两个序列s =(s_n)_(n≥0)并且t =(k〜n ― s_n)_(n≥0)时,序列s才是在k个符号上常规语言的生成序列。是正常的。

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