Set of Integer Multiples/Examples/Set of Even Numbers

Example of Set of Integer Multiples
The set of even integers is defined as:
 * $2 \Z := \set {x \in \Z: 2 \divides x}$

That is:
 * $2 \Z := \set {\ldots, -6, -4, -2, 0, 2, 4, 6, \ldots}$