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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 2229 | . . 3 ⊢ (Base‘𝐺) = (Base‘𝐺) | |
| 4 | 3 | a1i 9 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → (Base‘𝐺) = (Base‘𝐺)) |
| 5 | 3 | issubg 13718 | . . 3 ⊢ (𝑆 ∈ (SubGrp‘𝐺) ↔ (𝐺 ∈ Grp ∧ 𝑆 ⊆ (Base‘𝐺) ∧ (𝐺 ↾s 𝑆) ∈ Grp)) |
| 6 | 5 | simp1bi 1036 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝐺 ∈ Grp) |
| 7 | 3 | subgss 13719 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝑆 ⊆ (Base‘𝐺)) |
| 8 | 2, 4, 6, 7 | ressbas2d 13109 | 1 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝑆 = (Base‘𝐻)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1395 ∈ wcel 2200 ⊆ wss 3197 ‘cfv 5318 (class class class)co 6007 Basecbs 13040 ↾s cress 13041 Grpcgrp 13541 SubGrpcsubg 13712 |
| 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 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-13 2202 ax-14 2203 ax-ext 2211 ax-sep 4202 ax-pow 4258 ax-pr 4293 ax-un 4524 ax-setind 4629 ax-cnex 8098 ax-resscn 8099 ax-1re 8101 ax-addrcl 8104 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-fal 1401 df-nf 1507 df-sb 1809 df-eu 2080 df-mo 2081 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ne 2401 df-ral 2513 df-rex 2514 df-rab 2517 df-v 2801 df-sbc 3029 df-csb 3125 df-dif 3199 df-un 3201 df-in 3203 df-ss 3210 df-nul 3492 df-pw 3651 df-sn 3672 df-pr 3673 df-op 3675 df-uni 3889 df-int 3924 df-br 4084 df-opab 4146 df-mpt 4147 df-id 4384 df-xp 4725 df-rel 4726 df-cnv 4727 df-co 4728 df-dm 4729 df-rn 4730 df-res 4731 df-ima 4732 df-iota 5278 df-fun 5320 df-fn 5321 df-fv 5326 df-ov 6010 df-oprab 6011 df-mpo 6012 df-inn 9119 df-ndx 13043 df-slot 13044 df-base 13046 df-sets 13047 df-iress 13048 df-subg 13715 |
| This theorem is referenced by: subg0 13725 subginv 13726 subg0cl 13727 subginvcl 13728 subgcl 13729 subgsub 13731 subgmulg 13733 issubg2m 13734 subsubg 13742 nmznsg 13758 subgabl 13877 subrngbas 14178 issubrng2 14182 subrgbas 14202 issubrg2 14213 |
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