# relation

## Primary tabs

Defines:
unary relation, binary relation, ternary relation, $n$-ary relation, domain, range, nullary relation, field
Keywords:
cartesian ordered pair
Type of Math Object:
Definition
Major Section:
Reference
Groups audience:

## Mathematics Subject Classification

I meant to have my addendum in five paragraphs, but now it's all in one paragraph and looks like the frantic ravings of a madman.

That is fixed, btw.

-apk

### Doubt

A binary relation could be seen as a binary characteristic function. I don't get why a binary relation could be represented as a ternary characteristic function.