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| Mirrors > Home > MPE Home > Th. List > subggrp | Structured version Visualization version GIF version | ||
| Description: A subgroup is a group. (Contributed by Mario Carneiro, 2-Dec-2014.) |
| Ref | Expression |
|---|---|
| subggrp.h | ⊢ 𝐻 = (𝐺 ↾s 𝑆) |
| Ref | Expression |
|---|---|
| subggrp | ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝐻 ∈ Grp) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | subggrp.h | . 2 ⊢ 𝐻 = (𝐺 ↾s 𝑆) | |
| 2 | eqid 2734 | . . . 4 ⊢ (Base‘𝐺) = (Base‘𝐺) | |
| 3 | 2 | issubg 19054 | . . 3 ⊢ (𝑆 ∈ (SubGrp‘𝐺) ↔ (𝐺 ∈ Grp ∧ 𝑆 ⊆ (Base‘𝐺) ∧ (𝐺 ↾s 𝑆) ∈ Grp)) |
| 4 | 3 | simp3bi 1147 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → (𝐺 ↾s 𝑆) ∈ Grp) |
| 5 | 1, 4 | eqeltrid 2838 | 1 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝐻 ∈ Grp) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1541 ∈ wcel 2113 ⊆ wss 3899 ‘cfv 6490 (class class class)co 7356 Basecbs 17134 ↾s cress 17155 Grpcgrp 18861 SubGrpcsubg 19048 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2182 ax-ext 2706 ax-sep 5239 ax-nul 5249 ax-pow 5308 ax-pr 5375 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2537 df-eu 2567 df-clab 2713 df-cleq 2726 df-clel 2809 df-nfc 2883 df-ne 2931 df-ral 3050 df-rex 3059 df-rab 3398 df-v 3440 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4284 df-if 4478 df-pw 4554 df-sn 4579 df-pr 4581 df-op 4585 df-uni 4862 df-br 5097 df-opab 5159 df-mpt 5178 df-id 5517 df-xp 5628 df-rel 5629 df-cnv 5630 df-co 5631 df-dm 5632 df-rn 5633 df-res 5634 df-ima 5635 df-iota 6446 df-fun 6492 df-fv 6498 df-ov 7359 df-subg 19051 |
| This theorem is referenced by: subg0 19060 subginv 19061 subg0cl 19062 subginvcl 19063 subgcl 19064 issubg2 19069 issubgrpd 19071 subsubg 19077 resghm 19159 resghm2b 19161 subgga 19227 gasubg 19229 odsubdvds 19498 pgp0 19523 subgpgp 19524 sylow2blem2 19548 slwhash 19551 fislw 19552 subglsm 19600 pj1ghm 19630 subgabl 19763 cntrabl 19770 cycsubgcyg 19828 subgdmdprd 19963 subgdprd 19964 ablfacrplem 19994 pgpfaclem1 20010 pgpfaclem3 20012 ablfaclem3 20016 issubrg2 20523 subdrgint 20734 islss3 20908 zringcyg 21422 cnmsgngrp 21532 psgnghm 21533 mplgrp 21970 scmatghm 22475 subgtgp 24047 subgngp 24577 reefgim 26414 subgmulgcld 33075 ressply1sub 33600 amgmlemALT 49990 |
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