Definition:Quasi-Reflexive Relation/Definition 1
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Definition
Let $\RR \subseteq S \times S$ be a relation in $S$.
$\RR$ is quasi-reflexive if and only if:
- $\forall x, y \in S: \tuple {x, y} \in \RR \implies \tuple {x, x} \in \RR \land \tuple {y, y} \in \RR$
Also see
- Results about quasi-reflexive relations can be found here.