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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 2735 | . . . 4 ⊢ (Base‘𝐺) = (Base‘𝐺) | |
| 3 | 2 | issubg 19109 | . . 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 1540 ∈ wcel 2108 ⊆ wss 3926 ‘cfv 6531 (class class class)co 7405 Basecbs 17228 ↾s cress 17251 Grpcgrp 18916 SubGrpcsubg 19103 |
| 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 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2157 ax-12 2177 ax-ext 2707 ax-sep 5266 ax-nul 5276 ax-pow 5335 ax-pr 5402 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2065 df-mo 2539 df-eu 2568 df-clab 2714 df-cleq 2727 df-clel 2809 df-nfc 2885 df-ne 2933 df-ral 3052 df-rex 3061 df-rab 3416 df-v 3461 df-dif 3929 df-un 3931 df-in 3933 df-ss 3943 df-nul 4309 df-if 4501 df-pw 4577 df-sn 4602 df-pr 4604 df-op 4608 df-uni 4884 df-br 5120 df-opab 5182 df-mpt 5202 df-id 5548 df-xp 5660 df-rel 5661 df-cnv 5662 df-co 5663 df-dm 5664 df-rn 5665 df-res 5666 df-ima 5667 df-iota 6484 df-fun 6533 df-fv 6539 df-ov 7408 df-subg 19106 |
| This theorem is referenced by: subg0 19115 subginv 19116 subg0cl 19117 subginvcl 19118 subgcl 19119 issubg2 19124 issubgrpd 19126 subsubg 19132 resghm 19215 resghm2b 19217 subgga 19283 gasubg 19285 odsubdvds 19552 pgp0 19577 subgpgp 19578 sylow2blem2 19602 slwhash 19605 fislw 19606 subglsm 19654 pj1ghm 19684 subgabl 19817 cntrabl 19824 cycsubgcyg 19882 subgdmdprd 20017 subgdprd 20018 ablfacrplem 20048 pgpfaclem1 20064 pgpfaclem3 20066 ablfaclem3 20070 issubrg2 20552 subdrgint 20763 islss3 20916 zringcyg 21430 cnmsgngrp 21539 psgnghm 21540 mplgrp 21977 scmatghm 22471 subgtgp 24043 subgngp 24574 reefgim 26412 subgmulgcld 33038 ressply1sub 33583 amgmlemALT 49667 |
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