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Strong involutory matrix and its nature. (Chinese. English summary) Zbl 1173.15016

Summary: On the basis of an involutory matrix, this paper develops a concept of a strong involutory matrix, discusses its basic nature, and some conditions of equal value, thus enriching the contents of an involutory matrix. At last, it discusses the relationship between a strong involutory matrix and a sub-strong sub-orthogonal matrix.

MSC:

15B57 Hermitian, skew-Hermitian, and related matrices
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