Bartholdi zeta functions of graph coverings

Bartholdi zeta functions of graph coverings
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DOI:
10.1016/s0095-8956(03)00043-1
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发表时间:
2003-09
期刊:
J. Comb. Theory B
影响因子:
--
通讯作者:
H. Mizuno;I. Sato
H. Mizuno;I. Sato
中科院分区:
其他
文献类型:
--
作者:
H. Mizuno;I. Sato

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给出了图G的正则覆盖的Bartholdi zeta函数的一个分解公式。进一步,我们定义了G的L-函数,并给出了它的行列式表达式,作为推论,我们得到了G的正则覆盖的Bartholdi zeta函数被G的L-函数分解的公式。给出了G的L-函数的行列式表达式的另一个证明。
We give a decomposition formula for the Bartholdi zeta function of a regular covering of a graph G. Furthermore, we define an L-function of G, and give a determinant expression of it. As a corollary, we obtain a decomposition formula for the Bartholdi zeta function of a regular covering of G by L-functions of G. Also, we present another proof of the determinant expression of the L-function of G.