Definition:Gaussian Integer

Definition
A Gaussian integer is a complex number whose real and imaginary parts are both integers.

That is, a Gaussian integer is a number in the form:
 * $a + b i: a, b \in \Z$

The set of all Gaussian integers can be denoted $\Z \sqbrk i$, and hence can be defined as:
 * $\Z \sqbrk i = \set {a + b i: a, b \in \Z}$

Some sources use the symbol $J$ for the set $\Z \sqbrk i$.

Also known as
A Gaussian integer can also be referred to as a complex integer.

Also see

 * Definition:Lipschitz Quaternion
 * Definition:Hurwitz Quaternion


 * Units of Gaussian Integers
 * Gaussian Integers form Integral Domain
 * Definition:Algebraic Integer