Category:Diagonal Relation

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This category contains results about Diagonal Relation.
Definitions specific to this category can be found in Definitions/Diagonal Relation.

Let $S$ be a set.

The diagonal relation on $S$ is the relation $\Delta_S$ on $S$ defined as:

$\Delta_S = \set {\tuple {x, x}: x \in S} \subseteq S \times S$


$\Delta_S = \set {\tuple {x, y}: x, y \in S: x = y}$