Definition:Vectorization of Matrix

Definition
Let $S$ be a set.

Let $m, n \ge 1$ be natural numbers.

Let $A = \sqbrk {a_{i j} }$ be a $m \times n$ matrix over $S$.

Also see

 * Equivalence of Definitions of Vectorization of Matrix
 * Vectorization of Product of Three Matrices
 * Vectorization of Product of Two Matrices