vec作用素(vec operator)

$$ { vec(A) = \left( \begin{array}{c} a_{1} \\ a_{2} \\ \vdots \\
a_{n} \end{array} \right) } $$

例)

$$ { vec\left( \begin{array}{ccc} 1 & 3 & 2 \\ 0 & 7 & 4 \end{array} \right) = \left( \begin{array}{c} 1 \\ 0 \\ 3 \\ 7 \\ 2 \\ 4 \end{array} \right) } $$

REFERENCES:

  • http://yamaguchiyuto.hatenablog.com/entry/2016/11/16/100000