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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 2760 | . . . . 5 ⊢ (Base‘𝐺) = (Base‘𝐺) | |
| 2 | 1 | subgss 19251 | . . . 4 ⊢ (𝐴 ∈ (SubGrp‘𝐺) → 𝐴 ⊆ (Base‘𝐺)) |
| 3 | 2 | resmptd 6036 | . . 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 19254 | . . . 4 ⊢ (𝐴 ∈ (SubGrp‘𝐺) → 𝐴 = (Base‘𝐻)) |
| 6 | eqid 2760 | . . . . . 6 ⊢ (dist‘𝐺) = (dist‘𝐺) | |
| 7 | 4, 6 | ressds 17496 | . . . . 5 ⊢ (𝐴 ∈ (SubGrp‘𝐺) → (dist‘𝐺) = (dist‘𝐻)) |
| 8 | eqidd 2761 | . . . . 5 ⊢ (𝐴 ∈ (SubGrp‘𝐺) → 𝑥 = 𝑥) | |
| 9 | eqid 2760 | . . . . . 6 ⊢ (0g‘𝐺) = (0g‘𝐺) | |
| 10 | 4, 9 | subg0 19256 | . . . . 5 ⊢ (𝐴 ∈ (SubGrp‘𝐺) → (0g‘𝐺) = (0g‘𝐻)) |
| 11 | 7, 8, 10 | oveq123d 7435 | . . . 4 ⊢ (𝐴 ∈ (SubGrp‘𝐺) → (𝑥(dist‘𝐺)(0g‘𝐺)) = (𝑥(dist‘𝐻)(0g‘𝐻))) |
| 12 | 5, 11 | mpteq12dv 5192 | . . 3 ⊢ (𝐴 ∈ (SubGrp‘𝐺) → (𝑥 ∈ 𝐴 ↦ (𝑥(dist‘𝐺)(0g‘𝐺))) = (𝑥 ∈ (Base‘𝐻) ↦ (𝑥(dist‘𝐻)(0g‘𝐻)))) |
| 13 | 3, 12 | eqtr2d 2796 | . 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 2760 | . . 3 ⊢ (Base‘𝐻) = (Base‘𝐻) | |
| 16 | eqid 2760 | . . 3 ⊢ (0g‘𝐻) = (0g‘𝐻) | |
| 17 | eqid 2760 | . . 3 ⊢ (dist‘𝐻) = (dist‘𝐻) | |
| 18 | 14, 15, 16, 17 | nmfval 24815 | . 2 ⊢ 𝑀 = (𝑥 ∈ (Base‘𝐻) ↦ (𝑥(dist‘𝐻)(0g‘𝐻))) |
| 19 | subgnm.n | . . . 4 ⊢ 𝑁 = (norm‘𝐺) | |
| 20 | 19, 1, 9, 6 | nmfval 24815 | . . 3 ⊢ 𝑁 = (𝑥 ∈ (Base‘𝐺) ↦ (𝑥(dist‘𝐺)(0g‘𝐺))) |
| 21 | 20 | reseq1i 5968 | . 2 ⊢ (𝑁 ↾ 𝐴) = ((𝑥 ∈ (Base‘𝐺) ↦ (𝑥(dist‘𝐺)(0g‘𝐺))) ↾ 𝐴) |
| 22 | 13, 18, 21 | 3eqtr4g 2820 | 1 ⊢ (𝐴 ∈ (SubGrp‘𝐺) → 𝑀 = (𝑁 ↾ 𝐴)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 ∈ wcel 2145 ↦ cmpt 5186 ↾ cres 5657 ‘cfv 6533 (class class class)co 7414 Basecbs 17302 ↾s cress 17323 distcds 17352 0gc0g 17525 SubGrpcsubg 19244 normcnm 24803 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-sep 5251 ax-nul 5263 ax-pow 5330 ax-pr 5398 ax-un 7737 ax-cnex 11181 ax-resscn 11182 ax-1cn 11183 ax-icn 11184 ax-addcl 11185 ax-addrcl 11186 ax-mulcl 11187 ax-mulrcl 11188 ax-mulcom 11189 ax-addass 11190 ax-mulass 11191 ax-distr 11192 ax-i2m1 11193 ax-1ne0 11194 ax-1rid 11195 ax-rnegex 11196 ax-rrecex 11197 ax-cnre 11198 ax-pre-lttri 11199 ax-pre-lttrn 11200 ax-pre-ltadd 11201 ax-pre-mulgt0 11202 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-rmo 3365 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5550 df-eprel 5555 df-po 5563 df-so 5564 df-fr 5608 df-we 5610 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-pred 6299 df-ord 6360 df-on 6361 df-lim 6362 df-suc 6363 df-iota 6489 df-fun 6535 df-fn 6536 df-f 6537 df-f1 6538 df-fo 6539 df-f1o 6540 df-fv 6541 df-riota 7371 df-ov 7417 df-oprab 7418 df-mpo 7419 df-om 7864 df-2nd 7988 df-frecs 8281 df-wrecs 8312 df-recs 8361 df-rdg 8400 df-er 8697 df-en 8954 df-dom 8955 df-sdom 8956 df-pnf 11270 df-mnf 11271 df-xr 11272 df-ltxr 11273 df-le 11274 df-sub 11468 df-neg 11469 df-nn 12259 df-2 12328 df-3 12329 df-4 12330 df-5 12331 df-6 12332 df-7 12333 df-8 12334 df-9 12335 df-n0 12530 df-z 12617 df-dec 12738 df-sets 17257 df-slot 17275 df-ndx 17287 df-base 17303 df-ress 17324 df-plusg 17356 df-ds 17365 df-0g 17527 df-mgm 18731 df-sgrp 18822 df-mnd 18838 df-grp 19061 df-subg 19247 df-nm 24809 |
| This theorem is used by: subgnm2 24861 subrgnrg 24900 isncvsngp 25378 cphsscph 25480 |
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