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Mirrors > Home > MPE Home > Th. List > subgacs | Structured version Visualization version GIF version |
Description: Subgroups are an algebraic closure system. (Contributed by Stefan O'Rear, 4-Apr-2015.) (Revised by Mario Carneiro, 22-Aug-2015.) |
Ref | Expression |
---|---|
subgacs.b | ⊢ 𝐵 = (Base‘𝐺) |
Ref | Expression |
---|---|
subgacs | ⊢ (𝐺 ∈ Grp → (SubGrp‘𝐺) ∈ (ACS‘𝐵)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqid 2758 | . . . . . 6 ⊢ (invg‘𝐺) = (invg‘𝐺) | |
2 | 1 | issubg3 18377 | . . . . 5 ⊢ (𝐺 ∈ Grp → (𝑠 ∈ (SubGrp‘𝐺) ↔ (𝑠 ∈ (SubMnd‘𝐺) ∧ ∀𝑥 ∈ 𝑠 ((invg‘𝐺)‘𝑥) ∈ 𝑠))) |
3 | subgacs.b | . . . . . . . . . 10 ⊢ 𝐵 = (Base‘𝐺) | |
4 | 3 | submss 18053 | . . . . . . . . 9 ⊢ (𝑠 ∈ (SubMnd‘𝐺) → 𝑠 ⊆ 𝐵) |
5 | 4 | adantl 485 | . . . . . . . 8 ⊢ ((𝐺 ∈ Grp ∧ 𝑠 ∈ (SubMnd‘𝐺)) → 𝑠 ⊆ 𝐵) |
6 | velpw 4502 | . . . . . . . 8 ⊢ (𝑠 ∈ 𝒫 𝐵 ↔ 𝑠 ⊆ 𝐵) | |
7 | 5, 6 | sylibr 237 | . . . . . . 7 ⊢ ((𝐺 ∈ Grp ∧ 𝑠 ∈ (SubMnd‘𝐺)) → 𝑠 ∈ 𝒫 𝐵) |
8 | eleq2w 2835 | . . . . . . . . 9 ⊢ (𝑦 = 𝑠 → (((invg‘𝐺)‘𝑥) ∈ 𝑦 ↔ ((invg‘𝐺)‘𝑥) ∈ 𝑠)) | |
9 | 8 | raleqbi1dv 3321 | . . . . . . . 8 ⊢ (𝑦 = 𝑠 → (∀𝑥 ∈ 𝑦 ((invg‘𝐺)‘𝑥) ∈ 𝑦 ↔ ∀𝑥 ∈ 𝑠 ((invg‘𝐺)‘𝑥) ∈ 𝑠)) |
10 | 9 | elrab3 3605 | . . . . . . 7 ⊢ (𝑠 ∈ 𝒫 𝐵 → (𝑠 ∈ {𝑦 ∈ 𝒫 𝐵 ∣ ∀𝑥 ∈ 𝑦 ((invg‘𝐺)‘𝑥) ∈ 𝑦} ↔ ∀𝑥 ∈ 𝑠 ((invg‘𝐺)‘𝑥) ∈ 𝑠)) |
11 | 7, 10 | syl 17 | . . . . . 6 ⊢ ((𝐺 ∈ Grp ∧ 𝑠 ∈ (SubMnd‘𝐺)) → (𝑠 ∈ {𝑦 ∈ 𝒫 𝐵 ∣ ∀𝑥 ∈ 𝑦 ((invg‘𝐺)‘𝑥) ∈ 𝑦} ↔ ∀𝑥 ∈ 𝑠 ((invg‘𝐺)‘𝑥) ∈ 𝑠)) |
12 | 11 | pm5.32da 582 | . . . . 5 ⊢ (𝐺 ∈ Grp → ((𝑠 ∈ (SubMnd‘𝐺) ∧ 𝑠 ∈ {𝑦 ∈ 𝒫 𝐵 ∣ ∀𝑥 ∈ 𝑦 ((invg‘𝐺)‘𝑥) ∈ 𝑦}) ↔ (𝑠 ∈ (SubMnd‘𝐺) ∧ ∀𝑥 ∈ 𝑠 ((invg‘𝐺)‘𝑥) ∈ 𝑠))) |
13 | 2, 12 | bitr4d 285 | . . . 4 ⊢ (𝐺 ∈ Grp → (𝑠 ∈ (SubGrp‘𝐺) ↔ (𝑠 ∈ (SubMnd‘𝐺) ∧ 𝑠 ∈ {𝑦 ∈ 𝒫 𝐵 ∣ ∀𝑥 ∈ 𝑦 ((invg‘𝐺)‘𝑥) ∈ 𝑦}))) |
14 | elin 3876 | . . . 4 ⊢ (𝑠 ∈ ((SubMnd‘𝐺) ∩ {𝑦 ∈ 𝒫 𝐵 ∣ ∀𝑥 ∈ 𝑦 ((invg‘𝐺)‘𝑥) ∈ 𝑦}) ↔ (𝑠 ∈ (SubMnd‘𝐺) ∧ 𝑠 ∈ {𝑦 ∈ 𝒫 𝐵 ∣ ∀𝑥 ∈ 𝑦 ((invg‘𝐺)‘𝑥) ∈ 𝑦})) | |
15 | 13, 14 | bitr4di 292 | . . 3 ⊢ (𝐺 ∈ Grp → (𝑠 ∈ (SubGrp‘𝐺) ↔ 𝑠 ∈ ((SubMnd‘𝐺) ∩ {𝑦 ∈ 𝒫 𝐵 ∣ ∀𝑥 ∈ 𝑦 ((invg‘𝐺)‘𝑥) ∈ 𝑦}))) |
16 | 15 | eqrdv 2756 | . 2 ⊢ (𝐺 ∈ Grp → (SubGrp‘𝐺) = ((SubMnd‘𝐺) ∩ {𝑦 ∈ 𝒫 𝐵 ∣ ∀𝑥 ∈ 𝑦 ((invg‘𝐺)‘𝑥) ∈ 𝑦})) |
17 | 3 | fvexi 6677 | . . . 4 ⊢ 𝐵 ∈ V |
18 | mreacs 17000 | . . . 4 ⊢ (𝐵 ∈ V → (ACS‘𝐵) ∈ (Moore‘𝒫 𝐵)) | |
19 | 17, 18 | mp1i 13 | . . 3 ⊢ (𝐺 ∈ Grp → (ACS‘𝐵) ∈ (Moore‘𝒫 𝐵)) |
20 | grpmnd 18189 | . . . 4 ⊢ (𝐺 ∈ Grp → 𝐺 ∈ Mnd) | |
21 | 3 | submacs 18070 | . . . 4 ⊢ (𝐺 ∈ Mnd → (SubMnd‘𝐺) ∈ (ACS‘𝐵)) |
22 | 20, 21 | syl 17 | . . 3 ⊢ (𝐺 ∈ Grp → (SubMnd‘𝐺) ∈ (ACS‘𝐵)) |
23 | 3, 1 | grpinvcl 18231 | . . . . 5 ⊢ ((𝐺 ∈ Grp ∧ 𝑥 ∈ 𝐵) → ((invg‘𝐺)‘𝑥) ∈ 𝐵) |
24 | 23 | ralrimiva 3113 | . . . 4 ⊢ (𝐺 ∈ Grp → ∀𝑥 ∈ 𝐵 ((invg‘𝐺)‘𝑥) ∈ 𝐵) |
25 | acsfn1 17003 | . . . 4 ⊢ ((𝐵 ∈ V ∧ ∀𝑥 ∈ 𝐵 ((invg‘𝐺)‘𝑥) ∈ 𝐵) → {𝑦 ∈ 𝒫 𝐵 ∣ ∀𝑥 ∈ 𝑦 ((invg‘𝐺)‘𝑥) ∈ 𝑦} ∈ (ACS‘𝐵)) | |
26 | 17, 24, 25 | sylancr 590 | . . 3 ⊢ (𝐺 ∈ Grp → {𝑦 ∈ 𝒫 𝐵 ∣ ∀𝑥 ∈ 𝑦 ((invg‘𝐺)‘𝑥) ∈ 𝑦} ∈ (ACS‘𝐵)) |
27 | mreincl 16941 | . . 3 ⊢ (((ACS‘𝐵) ∈ (Moore‘𝒫 𝐵) ∧ (SubMnd‘𝐺) ∈ (ACS‘𝐵) ∧ {𝑦 ∈ 𝒫 𝐵 ∣ ∀𝑥 ∈ 𝑦 ((invg‘𝐺)‘𝑥) ∈ 𝑦} ∈ (ACS‘𝐵)) → ((SubMnd‘𝐺) ∩ {𝑦 ∈ 𝒫 𝐵 ∣ ∀𝑥 ∈ 𝑦 ((invg‘𝐺)‘𝑥) ∈ 𝑦}) ∈ (ACS‘𝐵)) | |
28 | 19, 22, 26, 27 | syl3anc 1368 | . 2 ⊢ (𝐺 ∈ Grp → ((SubMnd‘𝐺) ∩ {𝑦 ∈ 𝒫 𝐵 ∣ ∀𝑥 ∈ 𝑦 ((invg‘𝐺)‘𝑥) ∈ 𝑦}) ∈ (ACS‘𝐵)) |
29 | 16, 28 | eqeltrd 2852 | 1 ⊢ (𝐺 ∈ Grp → (SubGrp‘𝐺) ∈ (ACS‘𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 209 ∧ wa 399 = wceq 1538 ∈ wcel 2111 ∀wral 3070 {crab 3074 Vcvv 3409 ∩ cin 3859 ⊆ wss 3860 𝒫 cpw 4497 ‘cfv 6340 Basecbs 16554 Moorecmre 16924 ACScacs 16927 Mndcmnd 17990 SubMndcsubmnd 18034 Grpcgrp 18182 invgcminusg 18183 SubGrpcsubg 18353 |
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 2729 ax-sep 5173 ax-nul 5180 ax-pow 5238 ax-pr 5302 ax-un 7465 ax-cnex 10644 ax-resscn 10645 ax-1cn 10646 ax-icn 10647 ax-addcl 10648 ax-addrcl 10649 ax-mulcl 10650 ax-mulrcl 10651 ax-mulcom 10652 ax-addass 10653 ax-mulass 10654 ax-distr 10655 ax-i2m1 10656 ax-1ne0 10657 ax-1rid 10658 ax-rnegex 10659 ax-rrecex 10660 ax-cnre 10661 ax-pre-lttri 10662 ax-pre-lttrn 10663 ax-pre-ltadd 10664 ax-pre-mulgt0 10665 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3or 1085 df-3an 1086 df-tru 1541 df-fal 1551 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2557 df-eu 2588 df-clab 2736 df-cleq 2750 df-clel 2830 df-nfc 2901 df-ne 2952 df-nel 3056 df-ral 3075 df-rex 3076 df-reu 3077 df-rmo 3078 df-rab 3079 df-v 3411 df-sbc 3699 df-csb 3808 df-dif 3863 df-un 3865 df-in 3867 df-ss 3877 df-pss 3879 df-nul 4228 df-if 4424 df-pw 4499 df-sn 4526 df-pr 4528 df-tp 4530 df-op 4532 df-uni 4802 df-int 4842 df-iun 4888 df-iin 4889 df-br 5037 df-opab 5099 df-mpt 5117 df-tr 5143 df-id 5434 df-eprel 5439 df-po 5447 df-so 5448 df-fr 5487 df-we 5489 df-xp 5534 df-rel 5535 df-cnv 5536 df-co 5537 df-dm 5538 df-rn 5539 df-res 5540 df-ima 5541 df-pred 6131 df-ord 6177 df-on 6178 df-lim 6179 df-suc 6180 df-iota 6299 df-fun 6342 df-fn 6343 df-f 6344 df-f1 6345 df-fo 6346 df-f1o 6347 df-fv 6348 df-riota 7114 df-ov 7159 df-oprab 7160 df-mpo 7161 df-om 7586 df-wrecs 7963 df-recs 8024 df-rdg 8062 df-1o 8118 df-er 8305 df-en 8541 df-dom 8542 df-sdom 8543 df-fin 8544 df-pnf 10728 df-mnf 10729 df-xr 10730 df-ltxr 10731 df-le 10732 df-sub 10923 df-neg 10924 df-nn 11688 df-2 11750 df-ndx 16557 df-slot 16558 df-base 16560 df-sets 16561 df-ress 16562 df-plusg 16649 df-0g 16786 df-mre 16928 df-mrc 16929 df-acs 16931 df-mgm 17931 df-sgrp 17980 df-mnd 17991 df-submnd 18036 df-grp 18185 df-minusg 18186 df-subg 18356 |
This theorem is referenced by: nsgacs 18394 cycsubg2 18433 cycsubg2cl 18434 odf1o1 18777 lsmmod 18881 dmdprdd 19202 dprdfeq0 19225 dprdspan 19230 dprdres 19231 dprdss 19232 dprdz 19233 subgdmdprd 19237 subgdprd 19238 dprdsn 19239 dprd2dlem1 19244 dprd2da 19245 dmdprdsplit2lem 19248 ablfac1b 19273 pgpfac1lem1 19277 pgpfac1lem2 19278 pgpfac1lem3a 19279 pgpfac1lem3 19280 pgpfac1lem4 19281 pgpfac1lem5 19282 pgpfaclem1 19284 pgpfaclem2 19285 subrgacs 19660 lssacs 19820 proot1mul 40551 proot1hash 40552 |
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