On certain hyperplane arrangements and colored graphs
On certain hyperplane arrangements and colored graphs
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在某些超平面排列和彩色图上
DOI:
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发表时间:
2016
期刊:
影响因子:
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通讯作者:
J. Song
中科院分区:
文献类型:
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作者:
J. Song
We exhibit a one-to-one correspondence between $3$-colored graphs and subarrangements of certain hyperplane arrangements denoted $mathcal J_n$, $n in mathbb N$. We define the notion of centrality of $3$-colored graphs which corresponds to the centrality of hyperplane arrangements. Via the correspondence, the characteristic polynomial $chi_{mathcal J_n}$ of $mathcal J_n$ can be expressed in terms of the number of central $3$-colored graphs, and we compute $chi_{mathcal J_n}$ for $n = 2, 3$.