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Mirrors > Home > MPE Home > Th. List > subgnm | Structured version Visualization version GIF version |
Description: The norm in a subgroup. (Contributed by Mario Carneiro, 4-Oct-2015.) |
Ref | Expression |
---|---|
subgngp.h | ⊢ 𝐻 = (𝐺 ↾s 𝐴) |
subgnm.n | ⊢ 𝑁 = (norm‘𝐺) |
subgnm.m | ⊢ 𝑀 = (norm‘𝐻) |
Ref | Expression |
---|---|
subgnm | ⊢ (𝐴 ∈ (SubGrp‘𝐺) → 𝑀 = (𝑁 ↾ 𝐴)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqid 2725 | . . . . 5 ⊢ (Base‘𝐺) = (Base‘𝐺) | |
2 | 1 | subgss 19090 | . . . 4 ⊢ (𝐴 ∈ (SubGrp‘𝐺) → 𝐴 ⊆ (Base‘𝐺)) |
3 | 2 | resmptd 6045 | . . 3 ⊢ (𝐴 ∈ (SubGrp‘𝐺) → ((𝑥 ∈ (Base‘𝐺) ↦ (𝑥(dist‘𝐺)(0g‘𝐺))) ↾ 𝐴) = (𝑥 ∈ 𝐴 ↦ (𝑥(dist‘𝐺)(0g‘𝐺)))) |
4 | subgngp.h | . . . . 5 ⊢ 𝐻 = (𝐺 ↾s 𝐴) | |
5 | 4 | subgbas 19093 | . . . 4 ⊢ (𝐴 ∈ (SubGrp‘𝐺) → 𝐴 = (Base‘𝐻)) |
6 | eqid 2725 | . . . . . 6 ⊢ (dist‘𝐺) = (dist‘𝐺) | |
7 | 4, 6 | ressds 17394 | . . . . 5 ⊢ (𝐴 ∈ (SubGrp‘𝐺) → (dist‘𝐺) = (dist‘𝐻)) |
8 | eqidd 2726 | . . . . 5 ⊢ (𝐴 ∈ (SubGrp‘𝐺) → 𝑥 = 𝑥) | |
9 | eqid 2725 | . . . . . 6 ⊢ (0g‘𝐺) = (0g‘𝐺) | |
10 | 4, 9 | subg0 19095 | . . . . 5 ⊢ (𝐴 ∈ (SubGrp‘𝐺) → (0g‘𝐺) = (0g‘𝐻)) |
11 | 7, 8, 10 | oveq123d 7440 | . . . 4 ⊢ (𝐴 ∈ (SubGrp‘𝐺) → (𝑥(dist‘𝐺)(0g‘𝐺)) = (𝑥(dist‘𝐻)(0g‘𝐻))) |
12 | 5, 11 | mpteq12dv 5240 | . . 3 ⊢ (𝐴 ∈ (SubGrp‘𝐺) → (𝑥 ∈ 𝐴 ↦ (𝑥(dist‘𝐺)(0g‘𝐺))) = (𝑥 ∈ (Base‘𝐻) ↦ (𝑥(dist‘𝐻)(0g‘𝐻)))) |
13 | 3, 12 | eqtr2d 2766 | . 2 ⊢ (𝐴 ∈ (SubGrp‘𝐺) → (𝑥 ∈ (Base‘𝐻) ↦ (𝑥(dist‘𝐻)(0g‘𝐻))) = ((𝑥 ∈ (Base‘𝐺) ↦ (𝑥(dist‘𝐺)(0g‘𝐺))) ↾ 𝐴)) |
14 | subgnm.m | . . 3 ⊢ 𝑀 = (norm‘𝐻) | |
15 | eqid 2725 | . . 3 ⊢ (Base‘𝐻) = (Base‘𝐻) | |
16 | eqid 2725 | . . 3 ⊢ (0g‘𝐻) = (0g‘𝐻) | |
17 | eqid 2725 | . . 3 ⊢ (dist‘𝐻) = (dist‘𝐻) | |
18 | 14, 15, 16, 17 | nmfval 24541 | . 2 ⊢ 𝑀 = (𝑥 ∈ (Base‘𝐻) ↦ (𝑥(dist‘𝐻)(0g‘𝐻))) |
19 | subgnm.n | . . . 4 ⊢ 𝑁 = (norm‘𝐺) | |
20 | 19, 1, 9, 6 | nmfval 24541 | . . 3 ⊢ 𝑁 = (𝑥 ∈ (Base‘𝐺) ↦ (𝑥(dist‘𝐺)(0g‘𝐺))) |
21 | 20 | reseq1i 5981 | . 2 ⊢ (𝑁 ↾ 𝐴) = ((𝑥 ∈ (Base‘𝐺) ↦ (𝑥(dist‘𝐺)(0g‘𝐺))) ↾ 𝐴) |
22 | 13, 18, 21 | 3eqtr4g 2790 | 1 ⊢ (𝐴 ∈ (SubGrp‘𝐺) → 𝑀 = (𝑁 ↾ 𝐴)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1533 ∈ wcel 2098 ↦ cmpt 5232 ↾ cres 5680 ‘cfv 6549 (class class class)co 7419 Basecbs 17183 ↾s cress 17212 distcds 17245 0gc0g 17424 SubGrpcsubg 19083 normcnm 24529 |
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 2166 ax-ext 2696 ax-sep 5300 ax-nul 5307 ax-pow 5365 ax-pr 5429 ax-un 7741 ax-cnex 11196 ax-resscn 11197 ax-1cn 11198 ax-icn 11199 ax-addcl 11200 ax-addrcl 11201 ax-mulcl 11202 ax-mulrcl 11203 ax-mulcom 11204 ax-addass 11205 ax-mulass 11206 ax-distr 11207 ax-i2m1 11208 ax-1ne0 11209 ax-1rid 11210 ax-rnegex 11211 ax-rrecex 11212 ax-cnre 11213 ax-pre-lttri 11214 ax-pre-lttrn 11215 ax-pre-ltadd 11216 ax-pre-mulgt0 11217 |
This theorem depends on definitions: df-bi 206 df-an 395 df-or 846 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2528 df-eu 2557 df-clab 2703 df-cleq 2717 df-clel 2802 df-nfc 2877 df-ne 2930 df-nel 3036 df-ral 3051 df-rex 3060 df-rmo 3363 df-reu 3364 df-rab 3419 df-v 3463 df-sbc 3774 df-csb 3890 df-dif 3947 df-un 3949 df-in 3951 df-ss 3961 df-pss 3964 df-nul 4323 df-if 4531 df-pw 4606 df-sn 4631 df-pr 4633 df-op 4637 df-uni 4910 df-iun 4999 df-br 5150 df-opab 5212 df-mpt 5233 df-tr 5267 df-id 5576 df-eprel 5582 df-po 5590 df-so 5591 df-fr 5633 df-we 5635 df-xp 5684 df-rel 5685 df-cnv 5686 df-co 5687 df-dm 5688 df-rn 5689 df-res 5690 df-ima 5691 df-pred 6307 df-ord 6374 df-on 6375 df-lim 6376 df-suc 6377 df-iota 6501 df-fun 6551 df-fn 6552 df-f 6553 df-f1 6554 df-fo 6555 df-f1o 6556 df-fv 6557 df-riota 7375 df-ov 7422 df-oprab 7423 df-mpo 7424 df-om 7872 df-2nd 7995 df-frecs 8287 df-wrecs 8318 df-recs 8392 df-rdg 8431 df-er 8725 df-en 8965 df-dom 8966 df-sdom 8967 df-pnf 11282 df-mnf 11283 df-xr 11284 df-ltxr 11285 df-le 11286 df-sub 11478 df-neg 11479 df-nn 12246 df-2 12308 df-3 12309 df-4 12310 df-5 12311 df-6 12312 df-7 12313 df-8 12314 df-9 12315 df-n0 12506 df-z 12592 df-dec 12711 df-sets 17136 df-slot 17154 df-ndx 17166 df-base 17184 df-ress 17213 df-plusg 17249 df-ds 17258 df-0g 17426 df-mgm 18603 df-sgrp 18682 df-mnd 18698 df-grp 18901 df-subg 19086 df-nm 24535 |
This theorem is referenced by: subgnm2 24587 subrgnrg 24634 isncvsngp 25121 cphsscph 25223 |
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