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北美退伍军人节(Veterans Day),12 日无更新
arXiv 1504.04178math.CO
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具有谱为$\{λ_1^{n-2}, λ_1^2\}$的加权邻接矩阵的图

Graphs that have a weighted adjacency matrix with spectrum $\{λ_1^{n-2}, λ_1^2\}$

Karen Meagher, Irene Sciriha

摘要:

本文完全刻划了边加权邻接矩阵属于谱等于$\{ λ_1^{n-2}, λ_2^{2} \}$的$n \times n$对合类的图,其中某些图是$λ_1$,某些图是$λ_2$ .连通图是由至少两个完全图对的并构成的余图,并且可能与另一个完全图相连。

英文摘要:

In this paper we completely characterize the graphs which have an edge weighted adjacency matrix belonging to the class of $n \times n$ involutions with spectrum equal to $\{ λ_1^{n-2}, λ_2^{2} \}$ for some $λ_1$ and some $λ_2$. The connected graphs turn out to be the cographs constructed as the join of at least two unions of pairs of complete graphs, and possibly joined with one other complete graph.

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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