This may be a silly linear algebra question, but I'm reading something on calculating a homography matrix and there is a notation that I'm not so familiar with, a matrix equated with a vector. The equation starts with the assumption that a homography matrix is such:
$ H = \begin{bmatrix} h_{11} & h_{12} & h_{13} \\ h_{21} & h_{22} & h_{23} \\ h_{31} & h_{32} & h_{32} \\ \end{bmatrix} = \begin{bmatrix} h_1 \\ h_2 \\ h_3 \end{bmatrix}$
Does this notation mean that the $3\times1$ vector is an abbreviation of the $3 \times 3$ homography matrix?