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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 2232 | . . 3 ⊢ (Base‘𝐺) = (Base‘𝐺) | |
| 4 | 3 | a1i 9 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → (Base‘𝐺) = (Base‘𝐺)) |
| 5 | 3 | issubg 13879 | . . 3 ⊢ (𝑆 ∈ (SubGrp‘𝐺) ↔ (𝐺 ∈ Grp ∧ 𝑆 ⊆ (Base‘𝐺) ∧ (𝐺 ↾s 𝑆) ∈ Grp)) |
| 6 | 5 | simp1bi 1039 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝐺 ∈ Grp) |
| 7 | 3 | subgss 13880 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝑆 ⊆ (Base‘𝐺)) |
| 8 | 2, 4, 6, 7 | ressbas2d 13270 | 1 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝑆 = (Base‘𝐻)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1398 ∈ wcel 2203 ⊆ wss 3210 ‘cfv 5351 (class class class)co 6049 Basecbs 13201 ↾s cress 13202 Grpcgrp 13702 SubGrpcsubg 13873 |
| 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 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2205 ax-14 2206 ax-ext 2214 ax-sep 4227 ax-pow 4286 ax-pr 4321 ax-un 4553 ax-setind 4658 ax-cnex 8214 ax-resscn 8215 ax-1re 8217 ax-addrcl 8220 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1812 df-eu 2083 df-mo 2084 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-ne 2413 df-ral 2525 df-rex 2526 df-rab 2529 df-v 2814 df-sbc 3042 df-csb 3138 df-dif 3212 df-un 3214 df-in 3216 df-ss 3223 df-nul 3508 df-pw 3670 df-sn 3694 df-pr 3695 df-op 3697 df-uni 3914 df-int 3949 df-br 4109 df-opab 4171 df-mpt 4172 df-id 4413 df-xp 4754 df-rel 4755 df-cnv 4756 df-co 4757 df-dm 4758 df-rn 4759 df-res 4760 df-ima 4761 df-iota 5311 df-fun 5353 df-fn 5354 df-fv 5359 df-ov 6052 df-oprab 6053 df-mpo 6054 df-inn 9234 df-ndx 13204 df-slot 13205 df-base 13207 df-sets 13208 df-iress 13209 df-subg 13876 |
| This theorem is referenced by: subg0 13886 subginv 13887 subg0cl 13888 subginvcl 13889 subgcl 13890 subgsub 13892 subgmulg 13894 issubg2m 13895 subsubg 13903 nmznsg 13919 subgabl 14038 subrngbas 14340 issubrng2 14344 subrgbas 14364 issubrg2 14375 |
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