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→top: clean up & uniformity
The converse of the Urysohn lemma also holds: if there is such a continuous function for any two disjoint closed sets ''A'' and ''B'' in ''X'', then ''X'' is normal.
The converse of the Urysohn lemma also holds: if there is such a continuous function for any two disjoint closed sets ''A'' and ''B'' in ''X'', then ''X'' is normal.
[[category: Topology]]
[[Category:Topology]]