I've always seen the following identity for the determinant of block matrices as a 'joke'
$\rm{det}\left( \det\left( \begin{array}{cc}A begin{array}{cc} A & B \newline C & D \end{array} \right) = \det(AD-BC)$
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2 | i know it's a hack, still let the matrix look like a matrix | ||
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1 | [made Community Wiki] | ||
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I've always seen the following identity for the determinant of block matrices as a 'joke' $\rm{det}\left( \begin{array}{cc}A & B \ C & D \end{array} \right) = \det(AD-BC)$ |
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