Definition:Congruence (Number Theory)

Definition
Let $z \in \R$.

Definition for Integers
The concept of congruence is usually considered in the integer domain.

Also see

 * Equivalence of Definitions of Congruence


 * Congruence Modulo $m$ is Equivalence Relation

Linguistic Note
The word modulo comes from the Latin for with modulus, that is, with measure.