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arXiv 0709.2473math.RT
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复矩阵同余与 * 同余的标准形

Canonical forms for complex matrix congruence and *congruence

Roger A. Horn, Vladimir V. Sergeichuk

摘要:

Horn和Sergeichuk在[线性代数应用389(2004)347-353]中基于Sergeichuk的论文[Math. USSR,Izvestiya 31(3)(1988)481-501]给出了平方复矩阵的同余和 * 同余的标准形式,该论文采用了对合的箭图表示理论。我们使用矩阵分析的标准方法来直接证明这些形式是规范的。我们的证明提供了明确的算法来计算所有的块和参数的规范形式。我们使用这些形式,以获得标准对的同时同余的复对称和反对称矩阵对,以及标准形式的同时 * 同余的复埃尔米特矩阵对。

英文摘要:

Canonical forms for congruence and *congruence of square complex matrices were given by Horn and Sergeichuk in [Linear Algebra Appl. 389 (2004) 347-353], based on Sergeichuk's paper [Math. USSR, Izvestiya 31 (3) (1988) 481-501], which employed the theory of representations of quivers with involution. We use standard methods of matrix analysis to prove directly that these forms are canonical. Our proof provides explicit algorithms to compute all the blocks and parameters in the canonical forms. We use these forms to derive canonical pairs for simultaneous congruence of pairs of complex symmetric and skew-symmetric matrices as well as canonical forms for simultaneous *congruence of pairs of complex Hermitian matrices.

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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