Assertion: column's space | /r/HasProperty | comma
Facets:
Source sentences:
text: (array spaces, no commas, transpose signs) [ x 1 x 2 … x m ] {\displaystyle {\begin{bmatrix}x_{1}\;x_{2}\;\dots \;x_{m}\end{bmatrix}}} [ x 1 x 2 ⋮ x m ] or [ x 1 x 2 … x m ] T {