The size of a matrix $A$ is given in the form $m\times n$, where $m$ $i$ $s$ the number of rows and $n$ gives the number of columns of the matrix.

• $m$ is the number on the left of the $\times$ symbol, known as the row dimension of the matrix
• $n$ is the number on the right of the $\times$ symbol, known as the column dimension of the matrix