次正交矩阵的几个充要条件

Several Necessary and Sufficient Conditions for the Sub-orthogonal Matrix

目前对次正交矩阵的研究文章已有不少,但学者们基本上都是从运算性质以及它与其他特殊矩阵的关系上进行的.此处从矩阵元素的结构上研究了次正交矩阵,给出了次正交矩阵的3个充分必要条件.

There have been many research articles on the sub-orthogonal matrix, however, researchers tend to focus on the computing property and its relation to some other special matrices. In this article, the sub-orthogonal matrix is studied from the structure of its elements; and three necessary and sufficient conditions for sub-orthogonal matrix are given.