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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 2209 | . . 3 ⊢ (Base‘𝐺) = (Base‘𝐺) | |
| 4 | 3 | a1i 9 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → (Base‘𝐺) = (Base‘𝐺)) |
| 5 | 3 | issubg 13676 | . . 3 ⊢ (𝑆 ∈ (SubGrp‘𝐺) ↔ (𝐺 ∈ Grp ∧ 𝑆 ⊆ (Base‘𝐺) ∧ (𝐺 ↾s 𝑆) ∈ Grp)) |
| 6 | 5 | simp1bi 1017 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝐺 ∈ Grp) |
| 7 | 3 | subgss 13677 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝑆 ⊆ (Base‘𝐺)) |
| 8 | 2, 4, 6, 7 | ressbas2d 13067 | 1 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝑆 = (Base‘𝐻)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1375 ∈ wcel 2180 ⊆ wss 3177 ‘cfv 5294 (class class class)co 5974 Basecbs 12998 ↾s cress 12999 Grpcgrp 13499 SubGrpcsubg 13670 |
| 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 617 ax-in2 618 ax-io 713 ax-5 1473 ax-7 1474 ax-gen 1475 ax-ie1 1519 ax-ie2 1520 ax-8 1530 ax-10 1531 ax-11 1532 ax-i12 1533 ax-bndl 1535 ax-4 1536 ax-17 1552 ax-i9 1556 ax-ial 1560 ax-i5r 1561 ax-13 2182 ax-14 2183 ax-ext 2191 ax-sep 4181 ax-pow 4237 ax-pr 4272 ax-un 4501 ax-setind 4606 ax-cnex 8058 ax-resscn 8059 ax-1re 8061 ax-addrcl 8064 |
| This theorem depends on definitions: df-bi 117 df-3an 985 df-tru 1378 df-fal 1381 df-nf 1487 df-sb 1789 df-eu 2060 df-mo 2061 df-clab 2196 df-cleq 2202 df-clel 2205 df-nfc 2341 df-ne 2381 df-ral 2493 df-rex 2494 df-rab 2497 df-v 2781 df-sbc 3009 df-csb 3105 df-dif 3179 df-un 3181 df-in 3183 df-ss 3190 df-nul 3472 df-pw 3631 df-sn 3652 df-pr 3653 df-op 3655 df-uni 3868 df-int 3903 df-br 4063 df-opab 4125 df-mpt 4126 df-id 4361 df-xp 4702 df-rel 4703 df-cnv 4704 df-co 4705 df-dm 4706 df-rn 4707 df-res 4708 df-ima 4709 df-iota 5254 df-fun 5296 df-fn 5297 df-fv 5302 df-ov 5977 df-oprab 5978 df-mpo 5979 df-inn 9079 df-ndx 13001 df-slot 13002 df-base 13004 df-sets 13005 df-iress 13006 df-subg 13673 |
| This theorem is referenced by: subg0 13683 subginv 13684 subg0cl 13685 subginvcl 13686 subgcl 13687 subgsub 13689 subgmulg 13691 issubg2m 13692 subsubg 13700 nmznsg 13716 subgabl 13835 subrngbas 14135 issubrng2 14139 subrgbas 14159 issubrg2 14170 |
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