Title of article
Some results on the signless Laplacians of graphs
Author/Authors
Wang، نويسنده , , Jianfeng and Huang، نويسنده , , Qiongxiang and An، نويسنده , , Xinhui and Belardo، نويسنده , , Francesco، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2010
Pages
5
From page
1045
To page
1049
Abstract
In this paper we give two results concerning the signless Laplacian spectra of simple graphs. Firstly, we give a combinatorial expression for the fourth coefficient of the (signless Laplacian) characteristic polynomial of a graph. Secondly, we consider limit points for the (signless Laplacian) eigenvalues and we prove that each non-negative real number is a limit point for (signless Laplacian) eigenvalue of graphs.
Keywords
Signless Laplacian , Limit point , Spectrum , Coefficients , eigenvalues
Journal title
Applied Mathematics Letters
Serial Year
2010
Journal title
Applied Mathematics Letters
Record number
1527161
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