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Theorem nmcn 24351

Description: The norm of a normed group is a continuous function. (Contributed by Mario Carneiro, 4-Oct-2015.)

**Hypotheses**
Ref	Expression
nmcn.n	⊢ 𝑁 = (norm‘𝐺)
nmcn.j	⊢ 𝐽 = (TopOpen‘𝐺)
nmcn.k	⊢ 𝐾 = (topGen‘ran (,))

**Assertion**
Ref	Expression
nmcn	⊢ (𝐺 ∈ NrmGrp → 𝑁 ∈ (𝐽 Cn 𝐾))

Proof of Theorem nmcn Dummy variable 𝑥 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		nmcn.n	. . 3 ⊢ 𝑁 = (norm‘𝐺)
2		eqid 2732	. . 3 ⊢ (Base‘𝐺) = (Base‘𝐺)
3		eqid 2732	. . 3 ⊢ (0_g‘𝐺) = (0_g‘𝐺)
4		eqid 2732	. . 3 ⊢ (dist‘𝐺) = (dist‘𝐺)
5	1, 2, 3, 4	nmfval 24088	. 2 ⊢ 𝑁 = (𝑥 ∈ (Base‘𝐺) ↦ (𝑥(dist‘𝐺)(0_g‘𝐺)))
6		nmcn.j	. . 3 ⊢ 𝐽 = (TopOpen‘𝐺)
7		nmcn.k	. . 3 ⊢ 𝐾 = (topGen‘ran (,))
8		ngpms 24100	. . 3 ⊢ (𝐺 ∈ NrmGrp → 𝐺 ∈ MetSp)
9		ngptps 24102	. . . 4 ⊢ (𝐺 ∈ NrmGrp → 𝐺 ∈ TopSp)
10	2, 6	istps 22427	. . . 4 ⊢ (𝐺 ∈ TopSp ↔ 𝐽 ∈ (TopOn‘(Base‘𝐺)))
11	9, 10	sylib 217	. . 3 ⊢ (𝐺 ∈ NrmGrp → 𝐽 ∈ (TopOn‘(Base‘𝐺)))
12	11	cnmptid 23156	. . 3 ⊢ (𝐺 ∈ NrmGrp → (𝑥 ∈ (Base‘𝐺) ↦ 𝑥) ∈ (𝐽 Cn 𝐽))
13		ngpgrp 24099	. . . . 5 ⊢ (𝐺 ∈ NrmGrp → 𝐺 ∈ Grp)
14	2, 3	grpidcl 18846	. . . . 5 ⊢ (𝐺 ∈ Grp → (0_g‘𝐺) ∈ (Base‘𝐺))
15	13, 14	syl 17	. . . 4 ⊢ (𝐺 ∈ NrmGrp → (0_g‘𝐺) ∈ (Base‘𝐺))
16	11, 11, 15	cnmptc 23157	. . 3 ⊢ (𝐺 ∈ NrmGrp → (𝑥 ∈ (Base‘𝐺) ↦ (0_g‘𝐺)) ∈ (𝐽 Cn 𝐽))
17	4, 6, 7, 8, 11, 12, 16	cnmpt1ds 24349	. 2 ⊢ (𝐺 ∈ NrmGrp → (𝑥 ∈ (Base‘𝐺) ↦ (𝑥(dist‘𝐺)(0_g‘𝐺))) ∈ (𝐽 Cn 𝐾))
18	5, 17	eqeltrid 2837	1 ⊢ (𝐺 ∈ NrmGrp → 𝑁 ∈ (𝐽 Cn 𝐾))

Colors of variables: wff setvar class

Syntax hints: → wi 4 = wceq 1541 ∈ wcel 2106 ↦ cmpt 5230 ran crn 5676 ‘cfv 6540 (class class class)co 7405 (,)cioo 13320 Basecbs 17140 distcds 17202 TopOpenctopn 17363 topGenctg 17379 0_gc0g 17381 Grpcgrp 18815 TopOnctopon 22403 TopSpctps 22425 Cn ccn 22719 normcnm 24076 NrmGrpcngp 24077

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 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2703 ax-rep 5284 ax-sep 5298 ax-nul 5305 ax-pow 5362 ax-pr 5426 ax-un 7721 ax-cnex 11162 ax-resscn 11163 ax-1cn 11164 ax-icn 11165 ax-addcl 11166 ax-addrcl 11167 ax-mulcl 11168 ax-mulrcl 11169 ax-mulcom 11170 ax-addass 11171 ax-mulass 11172 ax-distr 11173 ax-i2m1 11174 ax-1ne0 11175 ax-1rid 11176 ax-rnegex 11177 ax-rrecex 11178 ax-cnre 11179 ax-pre-lttri 11180 ax-pre-lttrn 11181 ax-pre-ltadd 11182 ax-pre-mulgt0 11183 ax-pre-sup 11184

This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3or 1088 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2534 df-eu 2563 df-clab 2710 df-cleq 2724 df-clel 2810 df-nfc 2885 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-rmo 3376 df-reu 3377 df-rab 3433 df-v 3476 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-pss 3966 df-nul 4322 df-if 4528 df-pw 4603 df-sn 4628 df-pr 4630 df-tp 4632 df-op 4634 df-uni 4908 df-int 4950 df-iun 4998 df-iin 4999 df-br 5148 df-opab 5210 df-mpt 5231 df-tr 5265 df-id 5573 df-eprel 5579 df-po 5587 df-so 5588 df-fr 5630 df-se 5631 df-we 5632 df-xp 5681 df-rel 5682 df-cnv 5683 df-co 5684 df-dm 5685 df-rn 5686 df-res 5687 df-ima 5688 df-pred 6297 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6492 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-isom 6549 df-riota 7361 df-ov 7408 df-oprab 7409 df-mpo 7410 df-of 7666 df-om 7852 df-1st 7971 df-2nd 7972 df-supp 8143 df-frecs 8262 df-wrecs 8293 df-recs 8367 df-rdg 8406 df-1o 8462 df-2o 8463 df-er 8699 df-ec 8701 df-map 8818 df-ixp 8888 df-en 8936 df-dom 8937 df-sdom 8938 df-fin 8939 df-fsupp 9358 df-fi 9402 df-sup 9433 df-inf 9434 df-oi 9501 df-card 9930 df-pnf 11246 df-mnf 11247 df-xr 11248 df-ltxr 11249 df-le 11250 df-sub 11442 df-neg 11443 df-div 11868 df-nn 12209 df-2 12271 df-3 12272 df-4 12273 df-5 12274 df-6 12275 df-7 12276 df-8 12277 df-9 12278 df-n0 12469 df-z 12555 df-dec 12674 df-uz 12819 df-q 12929 df-rp 12971 df-xneg 13088 df-xadd 13089 df-xmul 13090 df-ioo 13324 df-ioc 13325 df-ico 13326 df-icc 13327 df-fz 13481 df-fzo 13624 df-seq 13963 df-exp 14024 df-hash 14287 df-cj 15042 df-re 15043 df-im 15044 df-sqrt 15178 df-abs 15179 df-struct 17076 df-sets 17093 df-slot 17111 df-ndx 17123 df-base 17141 df-ress 17170 df-plusg 17206 df-mulr 17207 df-sca 17209 df-vsca 17210 df-ip 17211 df-tset 17212 df-ple 17213 df-ds 17215 df-hom 17217 df-cco 17218 df-rest 17364 df-topn 17365 df-0g 17383 df-gsum 17384 df-topgen 17385 df-pt 17386 df-prds 17389 df-ordt 17443 df-xrs 17444 df-qtop 17449 df-imas 17450 df-xps 17452 df-mre 17526 df-mrc 17527 df-acs 17529 df-ps 18515 df-tsr 18516 df-mgm 18557 df-sgrp 18606 df-mnd 18622 df-submnd 18668 df-grp 18818 df-mulg 18945 df-cntz 19175 df-cmn 19644 df-psmet 20928 df-xmet 20929 df-met 20930 df-bl 20931 df-mopn 20932 df-top 22387 df-topon 22404 df-topsp 22426 df-bases 22440 df-cn 22722 df-cnp 22723 df-tx 23057 df-hmeo 23250 df-xms 23817 df-ms 23818 df-tms 23819 df-nm 24082 df-ngp 24083

This theorem is referenced by: ngnmcncn 24352 abscn 24353

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