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Theorem nmcn 24753

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 2728	. . 3 ⊢ (Base‘𝐺) = (Base‘𝐺)
3		eqid 2728	. . 3 ⊢ (0_g‘𝐺) = (0_g‘𝐺)
4		eqid 2728	. . 3 ⊢ (dist‘𝐺) = (dist‘𝐺)
5	1, 2, 3, 4	nmfval 24490	. 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 24502	. . 3 ⊢ (𝐺 ∈ NrmGrp → 𝐺 ∈ MetSp)
9		ngptps 24504	. . . 4 ⊢ (𝐺 ∈ NrmGrp → 𝐺 ∈ TopSp)
10	2, 6	istps 22829	. . . 4 ⊢ (𝐺 ∈ TopSp ↔ 𝐽 ∈ (TopOn‘(Base‘𝐺)))
11	9, 10	sylib 217	. . 3 ⊢ (𝐺 ∈ NrmGrp → 𝐽 ∈ (TopOn‘(Base‘𝐺)))
12	11	cnmptid 23558	. . 3 ⊢ (𝐺 ∈ NrmGrp → (𝑥 ∈ (Base‘𝐺) ↦ 𝑥) ∈ (𝐽 Cn 𝐽))
13		ngpgrp 24501	. . . . 5 ⊢ (𝐺 ∈ NrmGrp → 𝐺 ∈ Grp)
14	2, 3	grpidcl 18915	. . . . 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 23559	. . 3 ⊢ (𝐺 ∈ NrmGrp → (𝑥 ∈ (Base‘𝐺) ↦ (0_g‘𝐺)) ∈ (𝐽 Cn 𝐽))
17	4, 6, 7, 8, 11, 12, 16	cnmpt1ds 24751	. 2 ⊢ (𝐺 ∈ NrmGrp → (𝑥 ∈ (Base‘𝐺) ↦ (𝑥(dist‘𝐺)(0_g‘𝐺))) ∈ (𝐽 Cn 𝐾))
18	5, 17	eqeltrid 2833	1 ⊢ (𝐺 ∈ NrmGrp → 𝑁 ∈ (𝐽 Cn 𝐾))

Colors of variables: wff setvar class

Syntax hints: → wi 4 = wceq 1534 ∈ wcel 2099 ↦ cmpt 5225 ran crn 5673 ‘cfv 6542 (class class class)co 7414 (,)cioo 13350 Basecbs 17173 distcds 17235 TopOpenctopn 17396 topGenctg 17412 0_gc0g 17414 Grpcgrp 18883 TopOnctopon 22805 TopSpctps 22827 Cn ccn 23121 normcnm 24478 NrmGrpcngp 24479

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1790 ax-4 1804 ax-5 1906 ax-6 1964 ax-7 2004 ax-8 2101 ax-9 2109 ax-10 2130 ax-11 2147 ax-12 2167 ax-ext 2699 ax-rep 5279 ax-sep 5293 ax-nul 5300 ax-pow 5359 ax-pr 5423 ax-un 7734 ax-cnex 11188 ax-resscn 11189 ax-1cn 11190 ax-icn 11191 ax-addcl 11192 ax-addrcl 11193 ax-mulcl 11194 ax-mulrcl 11195 ax-mulcom 11196 ax-addass 11197 ax-mulass 11198 ax-distr 11199 ax-i2m1 11200 ax-1ne0 11201 ax-1rid 11202 ax-rnegex 11203 ax-rrecex 11204 ax-cnre 11205 ax-pre-lttri 11206 ax-pre-lttrn 11207 ax-pre-ltadd 11208 ax-pre-mulgt0 11209 ax-pre-sup 11210

This theorem depends on definitions: df-bi 206 df-an 396 df-or 847 df-3or 1086 df-3an 1087 df-tru 1537 df-fal 1547 df-ex 1775 df-nf 1779 df-sb 2061 df-mo 2530 df-eu 2559 df-clab 2706 df-cleq 2720 df-clel 2806 df-nfc 2881 df-ne 2937 df-nel 3043 df-ral 3058 df-rex 3067 df-rmo 3372 df-reu 3373 df-rab 3429 df-v 3472 df-sbc 3776 df-csb 3891 df-dif 3948 df-un 3950 df-in 3952 df-ss 3962 df-pss 3964 df-nul 4319 df-if 4525 df-pw 4600 df-sn 4625 df-pr 4627 df-tp 4629 df-op 4631 df-uni 4904 df-int 4945 df-iun 4993 df-iin 4994 df-br 5143 df-opab 5205 df-mpt 5226 df-tr 5260 df-id 5570 df-eprel 5576 df-po 5584 df-so 5585 df-fr 5627 df-se 5628 df-we 5629 df-xp 5678 df-rel 5679 df-cnv 5680 df-co 5681 df-dm 5682 df-rn 5683 df-res 5684 df-ima 5685 df-pred 6299 df-ord 6366 df-on 6367 df-lim 6368 df-suc 6369 df-iota 6494 df-fun 6544 df-fn 6545 df-f 6546 df-f1 6547 df-fo 6548 df-f1o 6549 df-fv 6550 df-isom 6551 df-riota 7370 df-ov 7417 df-oprab 7418 df-mpo 7419 df-of 7679 df-om 7865 df-1st 7987 df-2nd 7988 df-supp 8160 df-frecs 8280 df-wrecs 8311 df-recs 8385 df-rdg 8424 df-1o 8480 df-2o 8481 df-er 8718 df-ec 8720 df-map 8840 df-ixp 8910 df-en 8958 df-dom 8959 df-sdom 8960 df-fin 8961 df-fsupp 9380 df-fi 9428 df-sup 9459 df-inf 9460 df-oi 9527 df-card 9956 df-pnf 11274 df-mnf 11275 df-xr 11276 df-ltxr 11277 df-le 11278 df-sub 11470 df-neg 11471 df-div 11896 df-nn 12237 df-2 12299 df-3 12300 df-4 12301 df-5 12302 df-6 12303 df-7 12304 df-8 12305 df-9 12306 df-n0 12497 df-z 12583 df-dec 12702 df-uz 12847 df-q 12957 df-rp 13001 df-xneg 13118 df-xadd 13119 df-xmul 13120 df-ioo 13354 df-ioc 13355 df-ico 13356 df-icc 13357 df-fz 13511 df-fzo 13654 df-seq 13993 df-exp 14053 df-hash 14316 df-cj 15072 df-re 15073 df-im 15074 df-sqrt 15208 df-abs 15209 df-struct 17109 df-sets 17126 df-slot 17144 df-ndx 17156 df-base 17174 df-ress 17203 df-plusg 17239 df-mulr 17240 df-sca 17242 df-vsca 17243 df-ip 17244 df-tset 17245 df-ple 17246 df-ds 17248 df-hom 17250 df-cco 17251 df-rest 17397 df-topn 17398 df-0g 17416 df-gsum 17417 df-topgen 17418 df-pt 17419 df-prds 17422 df-ordt 17476 df-xrs 17477 df-qtop 17482 df-imas 17483 df-xps 17485 df-mre 17559 df-mrc 17560 df-acs 17562 df-ps 18551 df-tsr 18552 df-mgm 18593 df-sgrp 18672 df-mnd 18688 df-submnd 18734 df-grp 18886 df-mulg 19017 df-cntz 19261 df-cmn 19730 df-psmet 21264 df-xmet 21265 df-met 21266 df-bl 21267 df-mopn 21268 df-top 22789 df-topon 22806 df-topsp 22828 df-bases 22842 df-cn 23124 df-cnp 23125 df-tx 23459 df-hmeo 23652 df-xms 24219 df-ms 24220 df-tms 24221 df-nm 24484 df-ngp 24485

This theorem is referenced by: ngnmcncn 24754 abscn 24755

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