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Smith Normal Form与非循环矩阵

Smith Normal Form and Acyclic Matrics

Bryan L. Shader, In-Jae Kim

摘要:

本文介绍了一种基于Smith规范形的方法,研究了具有给定图的对称矩阵的谱。该方法很好地解释了路径覆盖数(分别为)树的直径T)与其图为T的对称矩阵的特征值出现的最大重数有关(分别图为T的对称矩阵上不同特征值的最小数目q(T)。该方法也适用于更一般的一类连通图G,不一定是树,以建立一个下界的q(G)。

英文摘要:

An approach, based on the Smith Normal Form, is introduced to study the spectra of symmetric matrices with a given graph. The approach serves well to explain how the path cover number (resp. diameter of a tree T) is related to the maximum multiplicity occurring for an eigenvalue of a symmetric matrix whose graph is T (resp. the minimum number q(T) of distinct eigenvalues over the symmetric matrices whose graphs are T). The approach is also applied to a more general class of connected graphs G, not necessarily trees, in order to establish a lower bound on q(G).

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。

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