In mathematics a zero matrix or null matrix is a matrix all of whose entries are zero.
For example, the matrix
[tex]\left[\begin{array}{cc}0&0\\0&0\end{array}\right][/tex]
is square matrix of dimension 2 and
the matrix
[tex]\left[\begin{array}{ccc}0&0&0\\0&0&0\end{array}\right][/tex]
is rerctangular matrix of dimension 2×3.
