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| Mirrors > Home > MPE Home > Th. List > cnrmnrm | Structured version Visualization version GIF version | ||
| Description: A completely normal space is normal. (Contributed by Mario Carneiro, 26-Aug-2015.) |
| Ref | Expression |
|---|---|
| cnrmnrm | ⊢ (𝐽 ∈ CNrm → 𝐽 ∈ Nrm) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2734 | . . 3 ⊢ ∪ 𝐽 = ∪ 𝐽 | |
| 2 | 1 | restid 17454 | . 2 ⊢ (𝐽 ∈ CNrm → (𝐽 ↾t ∪ 𝐽) = 𝐽) |
| 3 | uniexg 7743 | . . 3 ⊢ (𝐽 ∈ CNrm → ∪ 𝐽 ∈ V) | |
| 4 | cnrmi 23333 | . . 3 ⊢ ((𝐽 ∈ CNrm ∧ ∪ 𝐽 ∈ V) → (𝐽 ↾t ∪ 𝐽) ∈ Nrm) | |
| 5 | 3, 4 | mpdan 687 | . 2 ⊢ (𝐽 ∈ CNrm → (𝐽 ↾t ∪ 𝐽) ∈ Nrm) |
| 6 | 2, 5 | eqeltrrd 2834 | 1 ⊢ (𝐽 ∈ CNrm → 𝐽 ∈ Nrm) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2107 Vcvv 3464 ∪ cuni 4889 (class class class)co 7414 ↾t crest 17441 Nrmcnrm 23283 CNrmccnrm 23284 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1794 ax-4 1808 ax-5 1909 ax-6 1966 ax-7 2006 ax-8 2109 ax-9 2117 ax-10 2140 ax-11 2156 ax-12 2176 ax-ext 2706 ax-rep 5261 ax-sep 5278 ax-nul 5288 ax-pow 5347 ax-pr 5414 ax-un 7738 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1779 df-nf 1783 df-sb 2064 df-mo 2538 df-eu 2567 df-clab 2713 df-cleq 2726 df-clel 2808 df-nfc 2884 df-ne 2932 df-ral 3051 df-rex 3060 df-reu 3365 df-rab 3421 df-v 3466 df-sbc 3773 df-csb 3882 df-dif 3936 df-un 3938 df-in 3940 df-ss 3950 df-nul 4316 df-if 4508 df-pw 4584 df-sn 4609 df-pr 4611 df-op 4615 df-uni 4890 df-iun 4975 df-br 5126 df-opab 5188 df-mpt 5208 df-id 5560 df-xp 5673 df-rel 5674 df-cnv 5675 df-co 5676 df-dm 5677 df-rn 5678 df-res 5679 df-ima 5680 df-iota 6495 df-fun 6544 df-fn 6545 df-f 6546 df-f1 6547 df-fo 6548 df-f1o 6549 df-fv 6550 df-ov 7417 df-oprab 7418 df-mpo 7419 df-rest 17443 df-cnrm 23291 |
| This theorem is referenced by: (None) |
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