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Theorem cnrmnrm 22074
 Description: A completely normal space is normal. (Contributed by Mario Carneiro, 26-Aug-2015.)
Assertion
Ref Expression
cnrmnrm (𝐽 ∈ CNrm → 𝐽 ∈ Nrm)

Proof of Theorem cnrmnrm
StepHypRef Expression
1 eqid 2758 . . 3 𝐽 = 𝐽
21restid 16778 . 2 (𝐽 ∈ CNrm → (𝐽t 𝐽) = 𝐽)
3 uniexg 7470 . . 3 (𝐽 ∈ CNrm → 𝐽 ∈ V)
4 cnrmi 22073 . . 3 ((𝐽 ∈ CNrm ∧ 𝐽 ∈ V) → (𝐽t 𝐽) ∈ Nrm)
53, 4mpdan 686 . 2 (𝐽 ∈ CNrm → (𝐽t 𝐽) ∈ Nrm)
62, 5eqeltrrd 2853 1 (𝐽 ∈ CNrm → 𝐽 ∈ Nrm)
 Colors of variables: wff setvar class Syntax hints:   → wi 4   ∈ wcel 2111  Vcvv 3409  ∪ cuni 4801  (class class class)co 7156   ↾t crest 16765  Nrmcnrm 22023  CNrmccnrm 22024 This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2113  ax-9 2121  ax-10 2142  ax-11 2158  ax-12 2175  ax-ext 2729  ax-rep 5160  ax-sep 5173  ax-nul 5180  ax-pow 5238  ax-pr 5302  ax-un 7465 This theorem depends on definitions:  df-bi 210  df-an 400  df-or 845  df-3an 1086  df-tru 1541  df-fal 1551  df-ex 1782  df-nf 1786  df-sb 2070  df-mo 2557  df-eu 2588  df-clab 2736  df-cleq 2750  df-clel 2830  df-nfc 2901  df-ne 2952  df-ral 3075  df-rex 3076  df-reu 3077  df-rab 3079  df-v 3411  df-sbc 3699  df-csb 3808  df-dif 3863  df-un 3865  df-in 3867  df-ss 3877  df-nul 4228  df-if 4424  df-pw 4499  df-sn 4526  df-pr 4528  df-op 4532  df-uni 4802  df-iun 4888  df-br 5037  df-opab 5099  df-mpt 5117  df-id 5434  df-xp 5534  df-rel 5535  df-cnv 5536  df-co 5537  df-dm 5538  df-rn 5539  df-res 5540  df-ima 5541  df-iota 6299  df-fun 6342  df-fn 6343  df-f 6344  df-f1 6345  df-fo 6346  df-f1o 6347  df-fv 6348  df-ov 7159  df-oprab 7160  df-mpo 7161  df-rest 16767  df-cnrm 22031 This theorem is referenced by: (None)
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