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| Mirrors > Home > MPE Home > Th. List > subg0cl | Structured version Visualization version GIF version | ||
| Description: The group identity is an element of any subgroup. (Contributed by Mario Carneiro, 2-Dec-2014.) |
| Ref | Expression |
|---|---|
| subg0cl.i | ⊢ 0 = (0g‘𝐺) |
| Ref | Expression |
|---|---|
| subg0cl | ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 0 ∈ 𝑆) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2737 | . . . 4 ⊢ (𝐺 ↾s 𝑆) = (𝐺 ↾s 𝑆) | |
| 2 | 1 | subggrp 19063 | . . 3 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → (𝐺 ↾s 𝑆) ∈ Grp) |
| 3 | eqid 2737 | . . . 4 ⊢ (Base‘(𝐺 ↾s 𝑆)) = (Base‘(𝐺 ↾s 𝑆)) | |
| 4 | eqid 2737 | . . . 4 ⊢ (0g‘(𝐺 ↾s 𝑆)) = (0g‘(𝐺 ↾s 𝑆)) | |
| 5 | 3, 4 | grpidcl 18899 | . . 3 ⊢ ((𝐺 ↾s 𝑆) ∈ Grp → (0g‘(𝐺 ↾s 𝑆)) ∈ (Base‘(𝐺 ↾s 𝑆))) |
| 6 | 2, 5 | syl 17 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → (0g‘(𝐺 ↾s 𝑆)) ∈ (Base‘(𝐺 ↾s 𝑆))) |
| 7 | subg0cl.i | . . 3 ⊢ 0 = (0g‘𝐺) | |
| 8 | 1, 7 | subg0 19066 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 0 = (0g‘(𝐺 ↾s 𝑆))) |
| 9 | 1 | subgbas 19064 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝑆 = (Base‘(𝐺 ↾s 𝑆))) |
| 10 | 6, 8, 9 | 3eltr4d 2852 | 1 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 0 ∈ 𝑆) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1542 ∈ wcel 2114 ‘cfv 6493 (class class class)co 7360 Basecbs 17140 ↾s cress 17161 0gc0g 17363 Grpcgrp 18867 SubGrpcsubg 19054 |
| 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 5242 ax-nul 5252 ax-pow 5311 ax-pr 5378 ax-un 7682 ax-cnex 11086 ax-resscn 11087 ax-1cn 11088 ax-icn 11089 ax-addcl 11090 ax-addrcl 11091 ax-mulcl 11092 ax-mulrcl 11093 ax-mulcom 11094 ax-addass 11095 ax-mulass 11096 ax-distr 11097 ax-i2m1 11098 ax-1ne0 11099 ax-1rid 11100 ax-rnegex 11101 ax-rrecex 11102 ax-cnre 11103 ax-pre-lttri 11104 ax-pre-lttrn 11105 ax-pre-ltadd 11106 ax-pre-mulgt0 11107 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 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-nel 3038 df-ral 3053 df-rex 3062 df-rmo 3351 df-reu 3352 df-rab 3401 df-v 3443 df-sbc 3742 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4287 df-if 4481 df-pw 4557 df-sn 4582 df-pr 4584 df-op 4588 df-uni 4865 df-iun 4949 df-br 5100 df-opab 5162 df-mpt 5181 df-tr 5207 df-id 5520 df-eprel 5525 df-po 5533 df-so 5534 df-fr 5578 df-we 5580 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-res 5637 df-ima 5638 df-pred 6260 df-ord 6321 df-on 6322 df-lim 6323 df-suc 6324 df-iota 6449 df-fun 6495 df-fn 6496 df-f 6497 df-f1 6498 df-fo 6499 df-f1o 6500 df-fv 6501 df-riota 7317 df-ov 7363 df-oprab 7364 df-mpo 7365 df-om 7811 df-2nd 7936 df-frecs 8225 df-wrecs 8256 df-recs 8305 df-rdg 8343 df-er 8637 df-en 8888 df-dom 8889 df-sdom 8890 df-pnf 11172 df-mnf 11173 df-xr 11174 df-ltxr 11175 df-le 11176 df-sub 11370 df-neg 11371 df-nn 12150 df-2 12212 df-sets 17095 df-slot 17113 df-ndx 17125 df-base 17141 df-ress 17162 df-plusg 17194 df-0g 17365 df-mgm 18569 df-sgrp 18648 df-mnd 18664 df-grp 18870 df-subg 19057 |
| This theorem is referenced by: subgmulgcl 19073 issubg3 19078 issubg4 19079 subgint 19084 trivsubgd 19086 eqger 19111 ghmpreima 19171 subgga 19233 gasubg 19235 sylow1lem5 19535 sylow2blem2 19554 sylow2blem3 19555 fislw 19558 sylow3lem3 19562 sylow3lem4 19563 lsm01 19604 lsm02 19605 lsmdisj 19614 lsmdisj2 19615 pj1lid 19634 pj1rid 19635 dmdprdd 19934 dprdfid 19952 dprdfeq0 19957 dprdsubg 19959 dprdres 19963 dprdz 19965 dprdsn 19971 dmdprdsplitlem 19972 dprddisj2 19974 dprd2da 19977 dmdprdsplit2lem 19980 ablfacrp 20001 ablfacrp2 20002 ablfac1c 20006 ablfac1eu 20008 pgpfac1lem3a 20011 pgpfac1lem3 20012 pgpfac1lem5 20014 pgpfaclem2 20017 pgpfaclem3 20018 prmgrpsimpgd 20049 primefld0cl 20743 abvres 20768 islss4 20917 dflidl2rng 21177 rnglidlrng 21206 rng2idl0 21226 rng2idlsubg0 21229 2idlcpblrng 21230 rng2idl1cntr 21264 subrgpsr 21937 mpllsslem 21959 0elcpmat 22670 opnsubg 24056 clssubg 24057 tgpconncompss 24062 plypf1 26177 dvply2g 26252 dvply2gOLD 26253 efsubm 26520 dchrptlem3 27237 gsumsubg 33110 elrgspnlem4 33308 subrdom 33348 nsgqus0 33472 nsgqusf1olem1 33475 ressply1evls1 33627 ressply10g 33629 ressply1invg 33631 vr1nz 33655 drgext0gsca 33729 fedgmullem2 33768 fldextrspunlsplem 33811 fldextrspunlsp 33812 extdgfialglem1 33830 extdgfialglem2 33831 algextdeglem4 33858 algextdeglem5 33859 rtelextdg2lem 33864 fsumcnsrcl 43444 cnsrplycl 43445 rngunsnply 43447 |
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