Description: A perfectly normal space is a topological space. (Contributed by Mario Carneiro, 26-Aug-2015)
Ref | Expression | ||
---|---|---|---|
Assertion | pnrmtop | ⊢ ( 𝐽 ∈ PNrm → 𝐽 ∈ Top ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | pnrmnrm | ⊢ ( 𝐽 ∈ PNrm → 𝐽 ∈ Nrm ) | |
2 | nrmtop | ⊢ ( 𝐽 ∈ Nrm → 𝐽 ∈ Top ) | |
3 | 1 2 | syl | ⊢ ( 𝐽 ∈ PNrm → 𝐽 ∈ Top ) |