Some open problems on permutation patterns
Some open problems on permutation patterns
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关于排列模式的一些未决问题
DOI:
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发表时间:
2012
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影响因子:
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通讯作者:
E. Steingrímsson
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作者:
E. Steingrímsson
This is a brief survey of some open problems on permutation patterns, with an emphasis on subjects not covered in the recent book by Kitaev, \emph{Patterns in Permutations and words}. I first survey recent developments on the enumeration and asymptotics of the pattern 1324, the last pattern of length 4 whose asymptotic growth is unknown, and related issues such as upper bounds for the number of avoiders of any pattern of length $k$ for any given $k$. Other subjects treated are the M\"obius function, topological properties and other algebraic aspects of the poset of permutations, ordered by containment, and also the study of growth rates of permutation classes, which are containment closed subsets of this poset.
影响因子:
1
作者:
Albert M
通讯作者:
Albert M