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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 2798 | . . . 4 ⊢ (Base‘𝐺) = (Base‘𝐺) | |
3 | 2 | issubg 18271 | . . 3 ⊢ (𝑆 ∈ (SubGrp‘𝐺) ↔ (𝐺 ∈ Grp ∧ 𝑆 ⊆ (Base‘𝐺) ∧ (𝐺 ↾s 𝑆) ∈ Grp)) |
4 | 3 | simp3bi 1144 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → (𝐺 ↾s 𝑆) ∈ Grp) |
5 | 1, 4 | eqeltrid 2894 | 1 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝐻 ∈ Grp) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1538 ∈ wcel 2111 ⊆ wss 3881 ‘cfv 6324 (class class class)co 7135 Basecbs 16475 ↾s cress 16476 Grpcgrp 18095 SubGrpcsubg 18265 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2770 ax-sep 5167 ax-nul 5174 ax-pow 5231 ax-pr 5295 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3an 1086 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2598 df-eu 2629 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-ral 3111 df-rex 3112 df-rab 3115 df-v 3443 df-sbc 3721 df-dif 3884 df-un 3886 df-in 3888 df-ss 3898 df-nul 4244 df-if 4426 df-pw 4499 df-sn 4526 df-pr 4528 df-op 4532 df-uni 4801 df-br 5031 df-opab 5093 df-mpt 5111 df-id 5425 df-xp 5525 df-rel 5526 df-cnv 5527 df-co 5528 df-dm 5529 df-rn 5530 df-res 5531 df-ima 5532 df-iota 6283 df-fun 6326 df-fv 6332 df-ov 7138 df-subg 18268 |
This theorem is referenced by: subg0 18277 subginv 18278 subg0cl 18279 subginvcl 18280 subgcl 18281 issubg2 18286 issubgrpd 18288 subsubg 18294 resghm 18366 resghm2b 18368 subgga 18422 gasubg 18424 odsubdvds 18688 pgp0 18713 subgpgp 18714 sylow2blem2 18738 slwhash 18741 fislw 18742 subglsm 18791 pj1ghm 18821 subgabl 18949 cntrabl 18956 cycsubgcyg 19014 subgdmdprd 19149 subgdprd 19150 ablfacrplem 19180 pgpfaclem1 19196 pgpfaclem3 19198 ablfaclem3 19202 issubrg2 19548 subdrgint 19575 islss3 19724 zringcyg 20184 cnmsgngrp 20268 psgnghm 20269 mplgrp 20689 scmatghm 21138 m2cpmrngiso 21363 subgtgp 22710 subgngp 23241 reefgim 25045 amgmlemALT 45331 |
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