Category:Definitions/Null Relation

This category contains definitions related to Null Relation.
Related results can be found in Category:Null Relation.

The null relation is a relation $\RR$ in $S$ to $T$ such that $\RR$ is the empty set:

$\RR \subseteq S \times T: \RR = \O$

That is, no element of $S$ relates to any element in $T$:

$\RR: S \times T: \forall \tuple {s, t} \in S \times T: \neg s \mathrel \RR t$