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arXiv 1704.03085math.CO
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三个图的对偶与一个双射

Three Graph Duals and A Bijection

Nikolaos Apostolakis, Kerry Ojakian

摘要:

我们开发了一个概念的对偶的一个图,推广的定义Goulden和勇(仅适用于树),并reprofiting他们的主要结果使用我们的新概念。事实上,我们给三个定义的双重:一个图论的一个,一个代数的,和一个组合的“身心”双重,表明他们实际上是相同的,也是相同的(树)作为拓扑对偶开发的古尔登和勇。Goulden和Yong用他们的对偶定义了顶点标记树和置换$(n, \ldots, 1)$到$n-1$转置的因式分解之间的双射,表明他们的双射具有特殊的结构性质。我们用我们的对偶来重新证明他们的结果。

英文摘要:

We develop a notion of a dual of a graph, generalizing the definition of Goulden and Yong (which only applied to trees), and reproving their main result using our new notion. We in fact give three definitions of the dual: a graph-theoretic one, an algebraic one, and a combinatorial "mind-body" dual, showing that they are in fact the same, and are also the same (on trees) as the topological dual developed by Goulden and Yong. Goulden and Yong use their dual to define a bijection between the vertex labeled trees and the factorizations of the permutation $(n, \ldots, 1)$ into $n-1$ transpositions, showing that their bijection has a particular structural property. We reprove their result using our dual instead.

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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