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| Mirrors > Home > ILE Home > Th. List > subgbas | GIF version | ||
| Description: The base of the restricted group in a subgroup. (Contributed by Mario Carneiro, 2-Dec-2014.) |
| Ref | Expression |
|---|---|
| subggrp.h | ⊢ 𝐻 = (𝐺 ↾s 𝑆) |
| Ref | Expression |
|---|---|
| subgbas | ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝑆 = (Base‘𝐻)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | subggrp.h | . . 3 ⊢ 𝐻 = (𝐺 ↾s 𝑆) | |
| 2 | 1 | a1i 9 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝐻 = (𝐺 ↾s 𝑆)) |
| 3 | eqid 2230 | . . 3 ⊢ (Base‘𝐺) = (Base‘𝐺) | |
| 4 | 3 | a1i 9 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → (Base‘𝐺) = (Base‘𝐺)) |
| 5 | 3 | issubg 13783 | . . 3 ⊢ (𝑆 ∈ (SubGrp‘𝐺) ↔ (𝐺 ∈ Grp ∧ 𝑆 ⊆ (Base‘𝐺) ∧ (𝐺 ↾s 𝑆) ∈ Grp)) |
| 6 | 5 | simp1bi 1038 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝐺 ∈ Grp) |
| 7 | 3 | subgss 13784 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝑆 ⊆ (Base‘𝐺)) |
| 8 | 2, 4, 6, 7 | ressbas2d 13174 | 1 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝑆 = (Base‘𝐻)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1397 ∈ wcel 2201 ⊆ wss 3199 ‘cfv 5328 (class class class)co 6023 Basecbs 13105 ↾s cress 13106 Grpcgrp 13606 SubGrpcsubg 13777 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 619 ax-in2 620 ax-io 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-13 2203 ax-14 2204 ax-ext 2212 ax-sep 4208 ax-pow 4266 ax-pr 4301 ax-un 4532 ax-setind 4637 ax-cnex 8128 ax-resscn 8129 ax-1re 8131 ax-addrcl 8134 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-fal 1403 df-nf 1509 df-sb 1810 df-eu 2081 df-mo 2082 df-clab 2217 df-cleq 2223 df-clel 2226 df-nfc 2362 df-ne 2402 df-ral 2514 df-rex 2515 df-rab 2518 df-v 2803 df-sbc 3031 df-csb 3127 df-dif 3201 df-un 3203 df-in 3205 df-ss 3212 df-nul 3494 df-pw 3655 df-sn 3676 df-pr 3677 df-op 3679 df-uni 3895 df-int 3930 df-br 4090 df-opab 4152 df-mpt 4153 df-id 4392 df-xp 4733 df-rel 4734 df-cnv 4735 df-co 4736 df-dm 4737 df-rn 4738 df-res 4739 df-ima 4740 df-iota 5288 df-fun 5330 df-fn 5331 df-fv 5336 df-ov 6026 df-oprab 6027 df-mpo 6028 df-inn 9149 df-ndx 13108 df-slot 13109 df-base 13111 df-sets 13112 df-iress 13113 df-subg 13780 |
| This theorem is referenced by: subg0 13790 subginv 13791 subg0cl 13792 subginvcl 13793 subgcl 13794 subgsub 13796 subgmulg 13798 issubg2m 13799 subsubg 13807 nmznsg 13823 subgabl 13942 subrngbas 14244 issubrng2 14248 subrgbas 14268 issubrg2 14279 |
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