Symmetric relation
Set
context
$X$
definiendum
$ R\in\mathrm{SymmetricRel}(X) $
context
$ R \in \mathrm{Rel}(X) $
$ x,y\in X $
postulate
$ xRy \Leftrightarrow yRx $
Discussion
Parents
Subset of
Binary relation on a set
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