The Hoffman number of a graph
The Hoffman number of a graph
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DOI:
10.1016/s0012-365x(02)00764-1
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发表时间:
2003-01
期刊:
影响因子:
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通讯作者:
Y. Teranishi
中科院分区:
文献类型:
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作者:
Y. Teranishi
For a connected graph G with n vertices, let {λ1,λ2,…,λr} be the set of distinct positive eigenvalues of the Laplacian matrix of G. The Hoffman number μ(G) of G is defined by μ(G)=λ1λ2…λr/n. In this paper, we study some properties and applications of the Hoffman number.