Q-integral graphs with edge-degrees at most five

被引：33
|
作者：
Simic, Slobodan K. [1 ]
Stanic, Zoran [2 ]
机构：
[1] Math Inst SANU, Belgrade 11000, Serbia
[2] Univ Belgrade, Fac Math, Belgrade 11000, Serbia
来源：
DISCRETE MATHEMATICS | 2008年 / 308卷 / 20期
关键词：
edge-degree; signless Laplacian spectrum; integral eigenvalues;
D O I：
10.1016/j.disc.2007.08.055
中图分类号：
O1 [数学];
学科分类号：
0701 ; 070101 ;
摘要：
We consider the problem of determining the Q-integral graphs, i.e. the graphs with integral signless Laplacian spectrum. We find all such graphs with maximum edge-degree 4, and obtain only partial results for the next natural case, with maximum edge-degree 5. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：4625 / 4634
页数：10
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