Metamath Proof Explorer


Theorem pnrmtop

Description: A perfectly normal space is a topological space. (Contributed by Mario Carneiro, 26-Aug-2015)

Ref Expression
Assertion pnrmtop J PNrm J Top

Proof

Step Hyp Ref Expression
1 pnrmnrm J PNrm J Nrm
2 nrmtop J Nrm J Top
3 1 2 syl J PNrm J Top