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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 2730 | . . . . 5 ⊢ (Base‘𝐺) = (Base‘𝐺) | |
| 2 | 1 | subgss 19066 | . . . 4 ⊢ (𝐴 ∈ (SubGrp‘𝐺) → 𝐴 ⊆ (Base‘𝐺)) |
| 3 | 2 | resmptd 6014 | . . 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 19069 | . . . 4 ⊢ (𝐴 ∈ (SubGrp‘𝐺) → 𝐴 = (Base‘𝐻)) |
| 6 | eqid 2730 | . . . . . 6 ⊢ (dist‘𝐺) = (dist‘𝐺) | |
| 7 | 4, 6 | ressds 17380 | . . . . 5 ⊢ (𝐴 ∈ (SubGrp‘𝐺) → (dist‘𝐺) = (dist‘𝐻)) |
| 8 | eqidd 2731 | . . . . 5 ⊢ (𝐴 ∈ (SubGrp‘𝐺) → 𝑥 = 𝑥) | |
| 9 | eqid 2730 | . . . . . 6 ⊢ (0g‘𝐺) = (0g‘𝐺) | |
| 10 | 4, 9 | subg0 19071 | . . . . 5 ⊢ (𝐴 ∈ (SubGrp‘𝐺) → (0g‘𝐺) = (0g‘𝐻)) |
| 11 | 7, 8, 10 | oveq123d 7411 | . . . 4 ⊢ (𝐴 ∈ (SubGrp‘𝐺) → (𝑥(dist‘𝐺)(0g‘𝐺)) = (𝑥(dist‘𝐻)(0g‘𝐻))) |
| 12 | 5, 11 | mpteq12dv 5197 | . . 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 2730 | . . 3 ⊢ (Base‘𝐻) = (Base‘𝐻) | |
| 16 | eqid 2730 | . . 3 ⊢ (0g‘𝐻) = (0g‘𝐻) | |
| 17 | eqid 2730 | . . 3 ⊢ (dist‘𝐻) = (dist‘𝐻) | |
| 18 | 14, 15, 16, 17 | nmfval 24483 | . 2 ⊢ 𝑀 = (𝑥 ∈ (Base‘𝐻) ↦ (𝑥(dist‘𝐻)(0g‘𝐻))) |
| 19 | subgnm.n | . . . 4 ⊢ 𝑁 = (norm‘𝐺) | |
| 20 | 19, 1, 9, 6 | nmfval 24483 | . . 3 ⊢ 𝑁 = (𝑥 ∈ (Base‘𝐺) ↦ (𝑥(dist‘𝐺)(0g‘𝐺))) |
| 21 | 20 | reseq1i 5949 | . 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 1540 ∈ wcel 2109 ↦ cmpt 5191 ↾ cres 5643 ‘cfv 6514 (class class class)co 7390 Basecbs 17186 ↾s cress 17207 distcds 17236 0gc0g 17409 SubGrpcsubg 19059 normcnm 24471 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2702 ax-sep 5254 ax-nul 5264 ax-pow 5323 ax-pr 5390 ax-un 7714 ax-cnex 11131 ax-resscn 11132 ax-1cn 11133 ax-icn 11134 ax-addcl 11135 ax-addrcl 11136 ax-mulcl 11137 ax-mulrcl 11138 ax-mulcom 11139 ax-addass 11140 ax-mulass 11141 ax-distr 11142 ax-i2m1 11143 ax-1ne0 11144 ax-1rid 11145 ax-rnegex 11146 ax-rrecex 11147 ax-cnre 11148 ax-pre-lttri 11149 ax-pre-lttrn 11150 ax-pre-ltadd 11151 ax-pre-mulgt0 11152 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2534 df-eu 2563 df-clab 2709 df-cleq 2722 df-clel 2804 df-nfc 2879 df-ne 2927 df-nel 3031 df-ral 3046 df-rex 3055 df-rmo 3356 df-reu 3357 df-rab 3409 df-v 3452 df-sbc 3757 df-csb 3866 df-dif 3920 df-un 3922 df-in 3924 df-ss 3934 df-pss 3937 df-nul 4300 df-if 4492 df-pw 4568 df-sn 4593 df-pr 4595 df-op 4599 df-uni 4875 df-iun 4960 df-br 5111 df-opab 5173 df-mpt 5192 df-tr 5218 df-id 5536 df-eprel 5541 df-po 5549 df-so 5550 df-fr 5594 df-we 5596 df-xp 5647 df-rel 5648 df-cnv 5649 df-co 5650 df-dm 5651 df-rn 5652 df-res 5653 df-ima 5654 df-pred 6277 df-ord 6338 df-on 6339 df-lim 6340 df-suc 6341 df-iota 6467 df-fun 6516 df-fn 6517 df-f 6518 df-f1 6519 df-fo 6520 df-f1o 6521 df-fv 6522 df-riota 7347 df-ov 7393 df-oprab 7394 df-mpo 7395 df-om 7846 df-2nd 7972 df-frecs 8263 df-wrecs 8294 df-recs 8343 df-rdg 8381 df-er 8674 df-en 8922 df-dom 8923 df-sdom 8924 df-pnf 11217 df-mnf 11218 df-xr 11219 df-ltxr 11220 df-le 11221 df-sub 11414 df-neg 11415 df-nn 12194 df-2 12256 df-3 12257 df-4 12258 df-5 12259 df-6 12260 df-7 12261 df-8 12262 df-9 12263 df-n0 12450 df-z 12537 df-dec 12657 df-sets 17141 df-slot 17159 df-ndx 17171 df-base 17187 df-ress 17208 df-plusg 17240 df-ds 17249 df-0g 17411 df-mgm 18574 df-sgrp 18653 df-mnd 18669 df-grp 18875 df-subg 19062 df-nm 24477 |
| This theorem is referenced by: subgnm2 24529 subrgnrg 24568 isncvsngp 25056 cphsscph 25158 |
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