Category:Examples of Integral Domains

This category contains examples of Integral Domain.

Definition 1

An integral domain $\struct {D, +, \circ}$ is:

a commutative ring which is non-null

with a unity

in which there are no (proper) zero divisors, that is:

$\forall x, y \in D: x \circ y = 0_D \implies x = 0_D \text{ or } y = 0_D$

that is, in which all non-zero elements are cancellable.

Definition 2

An integral domain $\struct {D, +, \circ}$ is a commutative ring such that $\struct {D^*, \circ}$ is a monoid, all of whose elements are cancellable.

In this context, $D^*$ denotes the ring $D$ without zero: $D \setminus \set {0_D}$.