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Compound matrix : ウィキペディア英語版
Compound matrix

In mathematics, the ''k''th compound matrix (sometimes referred to as the ''k''th ''multiplicative'' compound matrix) C_k(A),〔R.A. Horn and C.R. Johnson, ''Matrix Analysis'', Cambridge University Press, 1990, pp. 19–20〕 of an m\times n matrix ''A'' is the \binom m k\times \binom n k matrix formed from the determinants of all k\times k submatrices of ''A'', i.e., all k\times k minors, arranged with the submatrix index sets in lexicographic order.
:
\begin
C_1(A) & = A \\()
C_n(A) & = \det(A)\textA\textn\times n \\()
C_k(AB) & = C_k(A)C_k(B) \\()
C_k(aX) & = a^kC_k(X) \\()
\text n\times n \text I, C_k(I) & = I\,, \text\textstyle \text\\()
C_k(A^T) & = C_k(A)^T\,, \text \\()
C_k(A^
*) & = C_k(A)^
*\,, \text \mathbb \\()
C_k(A^) & = C_k(A)^\,, \text n\times n, \text A
\end

==References==


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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