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| Mirrors > Home > MPE Home > Th. List > subgid | Structured version Visualization version GIF version | ||
| Description: A group is a subgroup of itself. (Contributed by Mario Carneiro, 7-Dec-2014.) |
| Ref | Expression |
|---|---|
| issubg.b | ⊢ 𝐵 = (Base‘𝐺) |
| Ref | Expression |
|---|---|
| subgid | ⊢ (𝐺 ∈ Grp → 𝐵 ∈ (SubGrp‘𝐺)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | id 22 | . 2 ⊢ (𝐺 ∈ Grp → 𝐺 ∈ Grp) | |
| 2 | ssidd 3946 | . 2 ⊢ (𝐺 ∈ Grp → 𝐵 ⊆ 𝐵) | |
| 3 | issubg.b | . . . 4 ⊢ 𝐵 = (Base‘𝐺) | |
| 4 | 3 | ressid 17205 | . . 3 ⊢ (𝐺 ∈ Grp → (𝐺 ↾s 𝐵) = 𝐺) |
| 5 | 4, 1 | eqeltrd 2837 | . 2 ⊢ (𝐺 ∈ Grp → (𝐺 ↾s 𝐵) ∈ Grp) |
| 6 | 3 | issubg 19093 | . 2 ⊢ (𝐵 ∈ (SubGrp‘𝐺) ↔ (𝐺 ∈ Grp ∧ 𝐵 ⊆ 𝐵 ∧ (𝐺 ↾s 𝐵) ∈ Grp)) |
| 7 | 1, 2, 5, 6 | syl3anbrc 1345 | 1 ⊢ (𝐺 ∈ Grp → 𝐵 ∈ (SubGrp‘𝐺)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1542 ∈ wcel 2114 ⊆ wss 3890 ‘cfv 6492 (class class class)co 7360 Basecbs 17170 ↾s cress 17191 Grpcgrp 18900 SubGrpcsubg 19087 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5231 ax-nul 5241 ax-pow 5302 ax-pr 5370 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-ral 3053 df-rex 3063 df-rab 3391 df-v 3432 df-sbc 3730 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-br 5087 df-opab 5149 df-mpt 5168 df-id 5519 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-res 5636 df-ima 5637 df-iota 6448 df-fun 6494 df-fv 6500 df-ov 7363 df-oprab 7364 df-mpo 7365 df-ress 17192 df-subg 19090 |
| This theorem is referenced by: trivsubgsnd 19120 nsgid 19136 gaid2 19269 pgpfac1 20048 pgpfac 20052 ablfaclem2 20054 ablfac 20056 qusxpid 33438 qusrn 33484 |
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