凯莱图的单特征值
首发时间:2018-10-31
摘要:凯莱图构造简单,对称性高,种类多样,越来越受到图论学者的重视,已成为群和图的一个重要研究领域。单特征值在图论的研究中具有重要意义。一个图的特征值指的是这个图的邻接矩阵的特征值,如果特征值的重数为1,那么就称这个特征值为单特征值。本文主要研究了两类凯莱图的单特征值,给出了循环群和二面体群凯莱图的单特征值能够取得的必要条件。
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Simple eigenvalues of Cayley graphs
Abstract:Cayley graph is of simple struture,high symmetry and various kinds,which has drawn more and more attention from graph theoty scholars.Simple eigenvalues are very important in graph theory.The eigenvalues of a graph refer to the eigenvalues of the adjacent matrix of this graph. If the multiplicity of the eigenvalue is 1,we call this eigenvalue a single eigenvalue. In this paper, we give necessary conditions a value should satisfy to be the simple eigenvalue of a Cayley graph corresponding to a cyclic group or a dihedral group.
Keywords: Cayley graph Eigenvalue Cyclic group Dihedral group
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