一些由它的邻接谱和角确定的图

On Some Graphs Determined by Their Adjacency Spectra and Angle

探讨了"哪些图由它的邻接谱和角确定的问题",利用同谱图的顶点度序列以及顶点度对序列的特点,证明了一些特殊结构的图,如冠图Cn■K1,Pn■K1,单轮图,树Ta各自由它们的特征值和角确定.

The question＂Which graphs are determined by their adjacency spectra and angle＂is discussed.By using the priperties of vertex degree sequence and vertex degree pair sequence of eospectral graphs, some graphs with special structure, are proved such as the corona of Cn and K1, the corona of P,, and K1, wheel graph, tree Ta which,are determined by their adjacency spectra and angle.