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| Mirrors > Home > ILE Home > Th. List > subgrcl | GIF version | ||
| Description: Reverse closure for the subgroup predicate. (Contributed by Mario Carneiro, 2-Dec-2014.) |
| Ref | Expression |
|---|---|
| subgrcl | ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝐺 ∈ Grp) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2238 | . . 3 ⊢ (Base‘𝐺) = (Base‘𝐺) | |
| 2 | 1 | issubg 14027 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) ↔ (𝐺 ∈ Grp ∧ 𝑆 ⊆ (Base‘𝐺) ∧ (𝐺 ↾s 𝑆) ∈ Grp)) |
| 3 | 2 | simp1bi 1043 | 1 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝐺 ∈ Grp) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2209 ⊆ wss 3220 ‘cfv 5377 (class class class)co 6085 Basecbs 13403 ↾s cress 13404 Grpcgrp 13856 SubGrpcsubg 14021 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4249 ax-pow 4311 ax-pr 4346 ax-un 4578 ax-cnex 8271 ax-resscn 8272 ax-1re 8274 ax-addrcl 8277 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ral 2533 df-rex 2534 df-rab 2537 df-v 2823 df-sbc 3052 df-csb 3148 df-un 3224 df-in 3226 df-ss 3233 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-int 3971 df-br 4131 df-opab 4193 df-mpt 4194 df-id 4438 df-xp 4780 df-rel 4781 df-cnv 4782 df-co 4783 df-dm 4784 df-rn 4785 df-res 4786 df-ima 4787 df-iota 5337 df-fun 5379 df-fn 5380 df-fv 5385 df-ov 6088 df-inn 9308 df-ndx 13406 df-slot 13407 df-base 13409 df-subg 14024 |
| This theorem is used by: subg0 14034 subginv 14035 subgcl 14038 subgsub 14040 subgmulgcl 14041 subgmulg 14042 subgsubm 14050 subsubg 14051 subgintm 14052 isnsg 14056 nsgconj 14060 isnsg3 14061 ssnmz 14065 nmznsg 14067 eqger 14078 eqgid 14080 eqgen 14081 eqgcpbl 14082 qusgrp 14086 quseccl 14087 qusadd 14088 qus0 14089 qusinv 14090 qussub 14091 ecqusaddcl 14093 resghm 14114 resghm2 14115 resghm2b 14116 conjsubg 14131 conjsubgen 14132 conjnmz 14133 conjnmzb 14134 qusghm 14136 issubrng2 14569 issubrg2 14600 |
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