第二章介绍符号模式矩阵的惯量所具有的几类重要形式以及惯量研究的动态。
In chapter two, it includes some impontant forms of sign pattern matrix inertias and research trends of inertia.
本文基于反对称矩阵的谱集，采用正交相似变换，得到一类具有零对角的符号模式矩阵具有唯一惯量的结论。
Based on the spectral set of skew-symmetric matrix, the result that a class sign pattern matrix with zero diagonal is unique inertia was proved by using orthogonal similarity transformation.
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