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Mirrors > Home > MPE Home > Th. List > pnrmnrm | Structured version Visualization version GIF version |
Description: A perfectly normal space is normal. (Contributed by Mario Carneiro, 26-Aug-2015.) |
Ref | Expression |
---|---|
pnrmnrm | ⊢ (𝐽 ∈ PNrm → 𝐽 ∈ Nrm) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ispnrm 21949 | . 2 ⊢ (𝐽 ∈ PNrm ↔ (𝐽 ∈ Nrm ∧ (Clsd‘𝐽) ⊆ ran (𝑥 ∈ (𝐽 ↑m ℕ) ↦ ∩ ran 𝑥))) | |
2 | 1 | simplbi 500 | 1 ⊢ (𝐽 ∈ PNrm → 𝐽 ∈ Nrm) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∈ wcel 2114 ⊆ wss 3938 ∩ cint 4878 ↦ cmpt 5148 ran crn 5558 ‘cfv 6357 (class class class)co 7158 ↑m cmap 8408 ℕcn 11640 Clsdccld 21626 Nrmcnrm 21920 PNrmcpnrm 21922 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2795 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-clab 2802 df-cleq 2816 df-clel 2895 df-nfc 2965 df-ral 3145 df-rab 3149 df-v 3498 df-dif 3941 df-un 3943 df-in 3945 df-ss 3954 df-nul 4294 df-if 4470 df-sn 4570 df-pr 4572 df-op 4576 df-uni 4841 df-br 5069 df-opab 5131 df-mpt 5149 df-cnv 5565 df-dm 5567 df-rn 5568 df-iota 6316 df-fv 6365 df-ov 7161 df-pnrm 21929 |
This theorem is referenced by: pnrmtop 21951 |
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