Kite'sthoughts on twin squares: Difference between revisions
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-4 & 4 & -1 \\ | -4 & 4 & -1 \\ | ||
\end{array} \right] | \end{array} \right] | ||
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\left[ \begin{array} {rrr} | \left[ \begin{array} {rrr} | ||
1 & 1 & 0 \\ | 1 & 1 & 0 \\ | ||