A
\kern{1.3em} \mathbf{A}
A
A
T
\kern{1.8em} \mathbf{A^{T}}
A
T
[
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]
\begin{bmatrix}\color{black}1 & \color{black}2 \\\color{black}3 & \color{black}4 \\\color{black}5 & \color{black}6\end{bmatrix}
⎣
⎢
⎡
1
3
5
2
4
6
⎦
⎥
⎤
[
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]
\begin{bmatrix}\color{white}1 & \color{white}3 & \color{white}5 \\\color{white}2 & \color{white}4 & \color{white}6\end{bmatrix}
[
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6
]