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Theorem nmcn 24684

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 2724	. . 3 ⊢ (Base‘𝐺) = (Base‘𝐺)
3		eqid 2724	. . 3 ⊢ (0_g‘𝐺) = (0_g‘𝐺)
4		eqid 2724	. . 3 ⊢ (dist‘𝐺) = (dist‘𝐺)
5	1, 2, 3, 4	nmfval 24421	. 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 24433	. . 3 ⊢ (𝐺 ∈ NrmGrp → 𝐺 ∈ MetSp)
9		ngptps 24435	. . . 4 ⊢ (𝐺 ∈ NrmGrp → 𝐺 ∈ TopSp)
10	2, 6	istps 22760	. . . 4 ⊢ (𝐺 ∈ TopSp ↔ 𝐽 ∈ (TopOn‘(Base‘𝐺)))
11	9, 10	sylib 217	. . 3 ⊢ (𝐺 ∈ NrmGrp → 𝐽 ∈ (TopOn‘(Base‘𝐺)))
12	11	cnmptid 23489	. . 3 ⊢ (𝐺 ∈ NrmGrp → (𝑥 ∈ (Base‘𝐺) ↦ 𝑥) ∈ (𝐽 Cn 𝐽))
13		ngpgrp 24432	. . . . 5 ⊢ (𝐺 ∈ NrmGrp → 𝐺 ∈ Grp)
14	2, 3	grpidcl 18887	. . . . 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 23490	. . 3 ⊢ (𝐺 ∈ NrmGrp → (𝑥 ∈ (Base‘𝐺) ↦ (0_g‘𝐺)) ∈ (𝐽 Cn 𝐽))
17	4, 6, 7, 8, 11, 12, 16	cnmpt1ds 24682	. 2 ⊢ (𝐺 ∈ NrmGrp → (𝑥 ∈ (Base‘𝐺) ↦ (𝑥(dist‘𝐺)(0_g‘𝐺))) ∈ (𝐽 Cn 𝐾))
18	5, 17	eqeltrid 2829	1 ⊢ (𝐺 ∈ NrmGrp → 𝑁 ∈ (𝐽 Cn 𝐾))

Colors of variables: wff setvar class

Syntax hints: → wi 4 = wceq 1533 ∈ wcel 2098 ↦ cmpt 5222 ran crn 5668 ‘cfv 6534 (class class class)co 7402 (,)cioo 13322 Basecbs 17145 distcds 17207 TopOpenctopn 17368 topGenctg 17384 0_gc0g 17386 Grpcgrp 18855 TopOnctopon 22736 TopSpctps 22758 Cn ccn 23052 normcnm 24409 NrmGrpcngp 24410

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2163 ax-ext 2695 ax-rep 5276 ax-sep 5290 ax-nul 5297 ax-pow 5354 ax-pr 5418 ax-un 7719 ax-cnex 11163 ax-resscn 11164 ax-1cn 11165 ax-icn 11166 ax-addcl 11167 ax-addrcl 11168 ax-mulcl 11169 ax-mulrcl 11170 ax-mulcom 11171 ax-addass 11172 ax-mulass 11173 ax-distr 11174 ax-i2m1 11175 ax-1ne0 11176 ax-1rid 11177 ax-rnegex 11178 ax-rrecex 11179 ax-cnre 11180 ax-pre-lttri 11181 ax-pre-lttrn 11182 ax-pre-ltadd 11183 ax-pre-mulgt0 11184 ax-pre-sup 11185

This theorem depends on definitions: df-bi 206 df-an 396 df-or 845 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2526 df-eu 2555 df-clab 2702 df-cleq 2716 df-clel 2802 df-nfc 2877 df-ne 2933 df-nel 3039 df-ral 3054 df-rex 3063 df-rmo 3368 df-reu 3369 df-rab 3425 df-v 3468 df-sbc 3771 df-csb 3887 df-dif 3944 df-un 3946 df-in 3948 df-ss 3958 df-pss 3960 df-nul 4316 df-if 4522 df-pw 4597 df-sn 4622 df-pr 4624 df-tp 4626 df-op 4628 df-uni 4901 df-int 4942 df-iun 4990 df-iin 4991 df-br 5140 df-opab 5202 df-mpt 5223 df-tr 5257 df-id 5565 df-eprel 5571 df-po 5579 df-so 5580 df-fr 5622 df-se 5623 df-we 5624 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-pred 6291 df-ord 6358 df-on 6359 df-lim 6360 df-suc 6361 df-iota 6486 df-fun 6536 df-fn 6537 df-f 6538 df-f1 6539 df-fo 6540 df-f1o 6541 df-fv 6542 df-isom 6543 df-riota 7358 df-ov 7405 df-oprab 7406 df-mpo 7407 df-of 7664 df-om 7850 df-1st 7969 df-2nd 7970 df-supp 8142 df-frecs 8262 df-wrecs 8293 df-recs 8367 df-rdg 8406 df-1o 8462 df-2o 8463 df-er 8700 df-ec 8702 df-map 8819 df-ixp 8889 df-en 8937 df-dom 8938 df-sdom 8939 df-fin 8940 df-fsupp 9359 df-fi 9403 df-sup 9434 df-inf 9435 df-oi 9502 df-card 9931 df-pnf 11248 df-mnf 11249 df-xr 11250 df-ltxr 11251 df-le 11252 df-sub 11444 df-neg 11445 df-div 11870 df-nn 12211 df-2 12273 df-3 12274 df-4 12275 df-5 12276 df-6 12277 df-7 12278 df-8 12279 df-9 12280 df-n0 12471 df-z 12557 df-dec 12676 df-uz 12821 df-q 12931 df-rp 12973 df-xneg 13090 df-xadd 13091 df-xmul 13092 df-ioo 13326 df-ioc 13327 df-ico 13328 df-icc 13329 df-fz 13483 df-fzo 13626 df-seq 13965 df-exp 14026 df-hash 14289 df-cj 15044 df-re 15045 df-im 15046 df-sqrt 15180 df-abs 15181 df-struct 17081 df-sets 17098 df-slot 17116 df-ndx 17128 df-base 17146 df-ress 17175 df-plusg 17211 df-mulr 17212 df-sca 17214 df-vsca 17215 df-ip 17216 df-tset 17217 df-ple 17218 df-ds 17220 df-hom 17222 df-cco 17223 df-rest 17369 df-topn 17370 df-0g 17388 df-gsum 17389 df-topgen 17390 df-pt 17391 df-prds 17394 df-ordt 17448 df-xrs 17449 df-qtop 17454 df-imas 17455 df-xps 17457 df-mre 17531 df-mrc 17532 df-acs 17534 df-ps 18523 df-tsr 18524 df-mgm 18565 df-sgrp 18644 df-mnd 18660 df-submnd 18706 df-grp 18858 df-mulg 18988 df-cntz 19225 df-cmn 19694 df-psmet 21222 df-xmet 21223 df-met 21224 df-bl 21225 df-mopn 21226 df-top 22720 df-topon 22737 df-topsp 22759 df-bases 22773 df-cn 23055 df-cnp 23056 df-tx 23390 df-hmeo 23583 df-xms 24150 df-ms 24151 df-tms 24152 df-nm 24415 df-ngp 24416

This theorem is referenced by: ngnmcncn 24685 abscn 24686

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