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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 2770 | . . . 4 ⊢ (Base‘𝐺) = (Base‘𝐺) | |
| 3 | 2 | issubg 19195 | . . 3 ⊢ (𝑆 ∈ (SubGrp‘𝐺) ↔ (𝐺 ∈ Grp ∧ 𝑆 ⊆ (Base‘𝐺) ∧ (𝐺 ↾s 𝑆) ∈ Grp)) |
| 4 | 3 | simp3bi 1163 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → (𝐺 ↾s 𝑆) ∈ Grp) |
| 5 | 1, 4 | eqeltrid 2874 | 1 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝐻 ∈ Grp) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1568 ∈ wcel 2150 ⊆ wss 3913 ‘cfv 6540 (class class class)co 7414 Basecbs 17272 ↾s cress 17293 Grpcgrp 19003 SubGrpcsubg 19189 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1823 ax-4 1837 ax-5 1938 ax-6 1995 ax-7 2036 ax-8 2152 ax-9 2160 ax-10 2183 ax-11 2199 ax-12 2220 ax-ext 2742 ax-sep 5262 ax-nul 5274 ax-pow 5340 ax-pr 5408 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1103 df-tru 1571 df-fal 1581 df-ex 1808 df-nf 1812 df-sb 2099 df-mo 2574 df-eu 2604 df-clab 2749 df-cleq 2762 df-clel 2845 df-nfc 2919 df-ne 2966 df-ral 3087 df-rex 3097 df-rab 3424 df-v 3464 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-nul 4295 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4878 df-br 5115 df-opab 5179 df-mpt 5198 df-id 5560 df-xp 5671 df-rel 5672 df-cnv 5673 df-co 5674 df-dm 5675 df-rn 5676 df-res 5677 df-ima 5678 df-iota 6496 df-fun 6542 df-fv 6548 df-ov 7417 df-subg 19192 |
| This theorem is referenced by: subg0 19201 subginv 19202 subg0cl 19203 subginvcl 19204 subgcl 19205 issubg2 19211 issubgrpd 19213 subsubg 19219 resghm 19305 resghm2b 19307 subgga 19373 gasubg 19375 odsubdvds 19644 pgp0 19669 subgpgp 19670 sylow2blem2 19694 slwhash 19697 fislw 19698 subglsm 19746 pj1ghm 19776 subgabl 19909 cntrabl 19916 cycsubgcyg 19974 subgdmdprd 20109 subgdprd 20110 ablfacrplem 20140 pgpfaclem1 20156 pgpfaclem3 20158 ablfaclem3 20162 issubrg2 20680 subdrgint 20889 islss3 21063 zringcyg 21602 cnmsgngrp 21712 psgnghm 21713 mplgrp 22149 scmatghm 22673 subgtgp 24245 subgngp 24775 reefgim 26593 subgmulgcld 33333 ressply1sub 33830 amgmlemALT 50552 |
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