Article ID Journal Published Year Pages File Type
4599140 Linear Algebra and its Applications 2015 23 Pages PDF
Abstract

A 1989 result of Duarte asserts that for a given tree T on n vertices, a fixed vertex i, and two sets of distinct real numbers L, M of sizes n   and n−1n−1, respectively, such that M strictly interlaces L, there is a real symmetric matrix A such that graph of A is T, eigenvalues of A are given by L  , and eigenvalues of A(i)A(i) are given by M. In 2013, a similar result for connected graphs was published by Hassani Monfared and Shader, using the Jacobian method. Analogues of these results are presented here for real skew-symmetric matrices whose graphs belong to a certain family of trees, and all of their supergraphs.

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Physical Sciences and Engineering Mathematics Algebra and Number Theory
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