新的Q整图类K_n^(-tk2)  

Some new families of Q-integral graphs K_n^(-tk2)

作　　者：卢世芳[1] 

机构地区：[1]青海大学基础部,青海西宁810016

出　　处：《纯粹数学与应用数学》2014年第3期229-233,共5页Pure and Applied Mathematics

基　　金：教育部春晖计划项目(Z2012091);青海大学中青年科研基金(2011-QGY-8)

摘　　要：在他人研究整图,Laplace整图和Seidel-整图的基础上,刻画了Q整图新类.对图类K-tk2n的无符号拉普拉斯特征多项式进行研究分析,应用矩阵的初等变换,给出了图类K-tk2n是Q整图的充分必要条件,得到了新的Q整图类K-tk2n及其Q谱.Based on the results of integral graphs, L-integral graphs and S-integral graphs. Characterized some new families of Q-integral graphs. We firstly give the necessary and sufficient condition for the graphs Kn^-tk2 to be Q-integral. Using the elementary row transformation of a matrix and the signless Laplace characteristic polynomial of the graphs Kn^-tk2. Furthemore, we obtain large families of Q-integral graphs and their spectra.

关 键 词：无符号拉普拉斯谱 无符号拉普拉斯特征多项式 Q整图 

分 类 号：O157.5[理学—数学]