In linear algebra, a column vector is a column of entries, for example, Similarly, a row vector is a row of entries Throughout, boldface is used for both row and column vectors. The transpose (indicated by T) of a row vector is the column vector and the transpose of a column vector is the row vector The set of all row vectors with n entries forms an n-dimensional vector space; similarly, the set of all column vectors with m entries forms an m-dimensional vector space.