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Hong's canonical form of a Hermitian matrix with respect to orthogonal *congruence
Linear Algebra and its Applications ( IF 1.0 ) Pub Date : 2021-08-16 , DOI: 10.1016/j.laa.2021.08.007
Tadej Starčič 1, 2
Affiliation  

Yoopyo Hong proved in 1989 that each Hermitian matrix A is orthogonally *congruent to a matrix of the form ε1A1εrArB1Bs, in which A1,,Ar,B1,,Bs are uniquely determined by the orthogonal *congruence class of A, and ε1,,εr{1,1}. We prove that ε1,,εp are uniquely determined by the orthogonal *congruence class of A as well. As an application, we present a canonical form of a pair (A,B) consisting of a Hermitian matrix A and a nonsingular symmetric matrix B with respect to transformations (SAS,STBS) with a nonsingular S.



中文翻译:

关于正交*同余的厄米矩阵的 Hong 规范形式

Yoopyo Hong 在 1989 年证明了每个 Hermitian 矩阵A都是正交*全等的矩阵形式ε1一种1εr一种r1,其中 一种1,,一种r,1,, 由 A 的正交 *同余类唯一确定,并且 ε1,,εr{1,-1}. 我们证明ε1,,ε也由 A 的正交 *同余类唯一确定。作为一个应用程序,我们提出了一对的规范形式(一种,)由一个 Hermitian 矩阵A和一个关于变换的非奇异对称矩阵B 组成(一种,)与非奇异S

更新日期:2021-08-24
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