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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 2741 | . . . 4 ⊢ (Base‘𝐺) = (Base‘𝐺) | |
| 3 | 2 | issubg 19097 | . . 3 ⊢ (𝑆 ∈ (SubGrp‘𝐺) ↔ (𝐺 ∈ Grp ∧ 𝑆 ⊆ (Base‘𝐺) ∧ (𝐺 ↾s 𝑆) ∈ Grp)) |
| 4 | 3 | simp3bi 1154 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → (𝐺 ↾s 𝑆) ∈ Grp) |
| 5 | 1, 4 | eqeltrid 2845 | 1 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝐻 ∈ Grp) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1548 ∈ wcel 2121 ⊆ wss 3885 ‘cfv 6489 (class class class)co 7360 Basecbs 17174 ↾s cress 17195 Grpcgrp 18904 SubGrpcsubg 19091 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1975 ax-7 2016 ax-8 2123 ax-9 2131 ax-10 2154 ax-11 2170 ax-12 2191 ax-ext 2713 ax-sep 5221 ax-nul 5231 ax-pow 5297 ax-pr 5365 |
| This theorem depends on definitions: df-bi 209 df-an 398 df-or 855 df-3an 1095 df-tru 1551 df-fal 1561 df-ex 1788 df-nf 1792 df-sb 2075 df-mo 2545 df-eu 2575 df-clab 2720 df-cleq 2733 df-clel 2816 df-nfc 2890 df-ne 2937 df-ral 3056 df-rex 3066 df-rab 3394 df-v 3435 df-dif 3888 df-un 3890 df-in 3892 df-ss 3902 df-nul 4265 df-if 4458 df-pw 4534 df-sn 4559 df-pr 4561 df-op 4565 df-uni 4842 df-br 5076 df-opab 5138 df-mpt 5157 df-id 5516 df-xp 5627 df-rel 5628 df-cnv 5629 df-co 5630 df-dm 5631 df-rn 5632 df-res 5633 df-ima 5634 df-iota 6445 df-fun 6491 df-fv 6497 df-ov 7363 df-subg 19094 |
| This theorem is referenced by: subg0 19103 subginv 19104 subg0cl 19105 subginvcl 19106 subgcl 19107 issubg2 19112 issubgrpd 19114 subsubg 19120 resghm 19202 resghm2b 19204 subgga 19270 gasubg 19272 odsubdvds 19541 pgp0 19566 subgpgp 19567 sylow2blem2 19591 slwhash 19594 fislw 19595 subglsm 19643 pj1ghm 19673 subgabl 19806 cntrabl 19813 cycsubgcyg 19871 subgdmdprd 20006 subgdprd 20007 ablfacrplem 20037 pgpfaclem1 20053 pgpfaclem3 20055 ablfaclem3 20059 issubrg2 20568 subdrgint 20779 islss3 20953 zringcyg 21448 cnmsgngrp 21558 psgnghm 21559 mplgrp 21995 scmatghm 22520 subgtgp 24092 subgngp 24622 reefgim 26437 subgmulgcld 33128 ressply1sub 33665 amgmlemALT 50307 |
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