Stack-sorting with consecutive-pattern-avoiding stacks
Stack-sorting with consecutive-pattern-avoiding stacks
复制标题
使用避免连续模式的堆栈进行堆栈排序
DOI:
10.1016/j.aam.2021.102192
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发表时间:
2021
影响因子:
1.1
通讯作者:
Zheng, Kai
中科院分区:
文献类型:
--
作者:
Defant, Colin;Zheng, Kai
We introduce consecutive-pattern-avoiding stack-sorting maps SC σ, which are natural generalizations of West's stack-sorting map s and natural analogues of the classical-pattern-avoiding stack-sorting maps s σ recently introduced by Cerbai, Claesson, and Ferrari. We characterize the patterns σ such that Sort (SC σ), the set of permutations that are sortable via the map s∘ SC σ, is a permutation class, and we enumerate the sets Sort (SC σ) for σ∈{123, 132, 321}. We also study the maps SC σ from a dynamical point of view, characterizing the periodic points of SC σ for all σ∈ S 3 and computing max π∈ S n| SC σ− 1 (π)| for all σ∈{132, 213, 231, 312}. In addition, we characterize the periodic points of the classical-pattern-avoiding stack-sorting map s 132, and we show that the maximum number of iterations of s 132 needed to send a permutation in S n to a periodic point is n− 1. The paper ends with numerous open problems and conjectures.
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影响因子:
0.8
作者:
M. Bousquet
通讯作者:
M. Bousquet
影响因子:
0.7
作者:
H. Mularczyk
通讯作者:
H. Mularczyk
DOI:
--
发表时间:
1982
期刊:
Journal of Combinatorial Theory
影响因子:
--
作者:
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通讯作者:
P. Ungar
DOI:
--
发表时间:
2019
期刊:
Journal of Combinatorial Theory
影响因子:
--
作者:
Colin Defant
通讯作者:
Colin Defant
DOI:
--
发表时间:
2020
期刊:
影响因子:
--
作者:
Giulio Cerbai
通讯作者:
Giulio Cerbai