Category:Perfectly Normal Spaces

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This category contains results about Perfectly Normal Spaces in the context of topology.
Definitions specific to this category can be found in Definitions/Perfectly Normal Spaces.


$\struct {S, \tau}$ is a perfectly normal space if and only if:

$\struct {S, \tau}$ is a perfectly $T_4$ space
$\struct {S, \tau}$ is a $T_1$ (Fréchet) space.