Pattern restricted Stirling k-ary words, the plateau statistic and the kernel method
Pattern restricted Stirling k-ary words, the plateau statistic and the kernel method
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模式限制Stirling k元词、平台统计和核方法
DOI:
10.1016/j.dam.2016.02.014
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发表时间:
2016-06
影响因子:
1.1
通讯作者:
Mansour Toufik
中科院分区:
文献类型:
--
作者:
马世美;Mansour Toufik
Stirling k-ary words resemble classical Stirling permutations except that all entries of a Stirling k-ary word of length n belong to the set {1, 2,…, k}. We first study generating functions for the number of pattern restricted Stirling k-ary words with a given number of plateaux by using the kernel method. We then study the generating function for the number of Stirling k-ary words of length n according to the number of distinct letters.
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