Universal cycles for permutation classes

Universal cycles for permutation classes
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排列类的通用循环

DOI:
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发表时间:
2009
期刊:
影响因子:
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通讯作者:
J. West
J. West
中科院分区:
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文献类型:
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作者:
M. Albert;J. West

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我们定义了一个通用的循环一类的$n$-置换作为一个循环字,其中类的每个元素出现一次作为一个$n$-因素。我们给出了循环闭类的一般结果,然后调查的情况下,当类被定义为一组排列的长度$3$,或一组排列的混合长度$3$和$4$的回避类。
We define a universal cycle for a class of $n$-permutations as a cyclic word in which each element of the class occurs exactly once as an $n$-factor. We give a general result for cyclically closed classes, and then survey the situation when the class is defined as the avoidance class of a set of permutations of length $3$, or of a set of permutations of mixed lengths $3$ and $4$.