arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2011.09385math.CO
收藏

图的非回溯矩阵的谱性质

Spectral properties of the non-backtracking matrix of a graph

Cory Glover, Mark Kempton

摘要:

研究了图的非回溯矩阵的谱。特别是,我们展示了如何获得一个较小的矩阵的特征向量的非回溯矩阵的特征向量。此外,我们找到了一个表达式的特征值的非回溯矩阵的特征值的邻接矩阵,并使用此上限的非回溯矩阵的谱半径,并给出了一个下界的频谱。我们还研究了可以由谱确定的图的性质。具体来说,我们证明了组件的数量,1度顶点的数量,以及是否是二分图都是由非回溯矩阵的谱。

英文摘要:

We investigate the spectrum of the non-backtracking matrix of a graph. In particular, we show how to obtain eigenvectors of the non-backtracking matrix in terms of eigenvectors of a smaller matrix. Furthermore, we find an expression for the eigenvalues of the non-backtracking matrix in terms of eigenvalues of the adjacency matrix and use this to upper-bound the spectral radius of the non-backtracking matrix and to give a lower bound on the spectrum. We also investigate properties of a graph that can be determined by the spectrum. Specifically, we prove that the number of components, the number of degree 1 vertices, and whether or not the graph is bipartite are all determined by the spectrum of the non-backtracking matrix.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑