On the second largest distance eigenvalue

被引:10
作者
Xing, Rundan [1 ]
Zhou, Bo [2 ]
机构
[1] Wuyi Univ, Sch Comp Sci, Jiangmen, Peoples R China
[2] S China Normal Univ, Sch Math Sci, Guangzhou, Guangdong, Peoples R China
关键词
distance matrix; second largest distance eigenvalue; forbidden subgraph; tree; unicyclic graph; 05C50; SPECTRAL-RADIUS; GRAPHS; MATRIX; TREES;
D O I
10.1080/03081087.2015.1127317
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
We characterize all connected graphs whose second largest distanceeigenvalues belong to 2 +f), as well as all trees whose second distance eigenvalues belong to ( (x.),). We also consider unicyclic graphs whose second distance eigenvalues belong to (-infinity, -1/2).
引用
收藏
页码:1887 / 1898
页数:12
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