arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2004.01659math.COmath.PR
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洗牌和$P$ -分区

Card shuffling and $P$-partitions

Jason Fulman, T. Kyle Petersen

摘要:

在这篇简要的文章中,我们强调洗牌和被称为$P$的函数之间的直接联系-来自代数组合学的分区。虽然我们讨论的许多(但不是全部)结果是已知的,但我们给出了统一的处理方法。关键的想法是这样的:从货架混洗获得置换$π$的概率是随机$P$ -分区被$π$排序的概率,并且从列混洗获得$π$的概率是随机$P$ -分区被$π^{-1}$排序的概率。

英文摘要:

In this expository article, we highlight the direct connection between card shuffling and the functions known as $P$-partitions that come from algebraic combinatorics. While many (but not all) of the results we discuss are known, we give a unified treatment. The key idea is this: the probability of obtaining a permutation $π$ from shelf shuffling is the probability that a random $P$-partition is sorted by $π$, and the probability of obtaining $π$ from riffle shuffling is the probability that a random $P$-partition is sorted by $π^{-1}$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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