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arXiv 0812.2817math.CO
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Tutte多项式与G-停车函数

Tutte polynomial and G-parking functions

HungYung Chang, Jun Ma, Yeong-Nan Yeh

摘要:

设$G$是一个顶点集为$\{0,1,2,...,n\}$的连通图.我们允许$G$具有重边和环。本文利用$G$ -parking函数的一些参数给出了外活动性的一个刻画。特别地,我们给出了$G$ -parking函数的桥顶点的定义,并得到了$G$的Tutte多项式$T_G(x,y)$关于$G$ -parking函数的表达式.我们发现Tutte多项式通过桥顶点的数目来枚举$G$ -parking函数。

英文摘要:

Let $G$ be a connected graph with vertex set $\{0,1,2,...,n\}$. We allow $G$ to have multiple edges and loops. In this paper, we give a characterization of external activity by some parameters of $G$-parking functions. In particular, we give the definition of the bridge vertex of a $G$-parking function and obtain an expression of the Tutte polynomial $T_G(x,y)$ of $G$ in terms of $G$-parking functions. We find the Tutte polynomial enumerates the $G$-parking function by the number of the bridge vertices.

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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