Commutative Law of Multiplication

Theorem
Let $\mathbb F$ be one of the standard number sets: $\N, \Z, \Q, \R$ and $\C$.

Then:
 * $\forall x, y \in \mathbb F: x + y = y + x$

That is, the operation of multiplication on the standard number sets is commutative.

Also see

 * Commutative Law of Addition


 * Associative Law of Multiplication
 * Associative Law of Addition