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arXiv 0903.0898math.CO
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Place-difference-value patterns:广义排列和词模式的推广

Place-difference-value patterns: A generalization of generalized permutation and word patterns

Sergey Kitaev, Jeffrey Remmel

摘要:

受Mahonian统计研究的启发,Babson和Steingrimsson在2000年引入了“广义置换模式”(GP)的概念,它推广了Knuth在1969年引入的“经典”置换模式的概念。GP的发明导致了大量与这些排列和单词模式的属性相关的出版物。自巴布森和斯坦格里姆森的工作以来,文献中出现了几种对排列模式的进一步推广,每一种都带来了一组新的排列或单词模式问题,并且经常与其他组合对象和学科建立新的联系。例如,Bousquet-Melou等人引入了一种新的置换模式,使他们能够将置换模式理论与偏序集理论联系起来。在本文中,我们介绍了另一种更一般的模式定义,称为位差值模式(PDVP),它涵盖了文献中出现的所有最常见的排列和/或单词模式的定义。PDVP提供了许多新的方法来发展排列和单词中的模式理论。我们将给出几个PDVP的例子,在排列和单词中,不能用前面介绍的任何其他模式条件来描述。最后,我们提出了几个双射的问题,我们的模式连接到其他组合对象。

英文摘要:

Motivated by study of Mahonian statistics, in 2000, Babson and Steingrimsson introduced the notion of a "generalized permutation pattern" (GP) which generalizes the concept of "classical" permutation pattern introduced by Knuth in 1969. The invention of GPs led to a large number of publications related to properties of these patterns in permutations and words. Since the work of Babson and Steingrimsson, several further generalizations of permutation patterns have appeared in the literature, each bringing a new set of permutation or word pattern problems and often new connections with other combinatorial objects and disciplines. For example, Bousquet-Melou et al. introduced a new type of permutation pattern that allowed them to relate permutation patterns theory to the theory of partially ordered sets. In this paper we introduce yet another, more general definition of a pattern, called place-difference-value patterns (PDVP) that covers all of the most common definitions of permutation and/or word patterns that have occurred in the literature. PDVPs provide many new ways to develop the theory of patterns in permutations and words. We shall give several examples of PDVPs in both permutations and words that cannot be described in terms of any other pattern conditions that have been introduced previously. Finally, we raise several bijective questions linking our patterns to other combinatorial objects.

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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