Category:Extremally Disconnected Spaces

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This category contains results about Extremally Disconnected Spaces.
Definitions specific to this category can be found in Definitions/Extremally Disconnected Spaces.

A $T_2$ (Hausdorff) topological space $T = \struct {S, \tau}$ is extremally disconnected if and only if the closure of every open set of $T$ is open.