似双星图H_n(4,2)的谱确定  

Double Starlike Graph Determined by Its Laplacian Spectrum

作　　者：卞红琴[1] 刘晓刚[2] 李秦[1] 

机构地区：[1]兰州交通大学数理与软件工程学院,兰州730070 [2]兰州理工大学理学院,兰州730050

出　　处：《重庆工学院学报》2007年第19期85-87,92,共4页Journal of Chongqing Institute of Technology

摘　　要：定义了恰有2个顶点度大于2的树为似双星树,分析了似双星树最大Laplacian特征值,并结合其线图的性质,证明了似双星树由它的Laplacian谱确定.A tree is called a double starlike tree if it has exactly two vertices of degree greater than two. The maximum Laplaeian eigenvalues of a double starlike is analyzed, and combined with the character of a linear graph. Aouble starlike is proved to be determined by their Laplaeian spectra.

关 键 词：LAPLACIAN谱 同谱图 似双星树 

分 类 号：O151.21[理学—数学]