For instance, the matrix A above is 3 × 4 and can be defined as A = (i = 1, 2, 3; j = 1, ..., 4), or A = 3×4.
Για παράδειγμα, ο πίνακας A παραπάνω είναι 3 × 4 και μπορεί να οριστεί ως A = (i = 1, 2, 3; j = 1, ..., 4), ή A = 3×4.