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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 19064 | . . 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 18900 | . . 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 19067 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 0 = (0g‘(𝐺 ↾s 𝑆))) |
| 9 | 1 | subgbas 19065 | . 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 7361 Basecbs 17141 ↾s cress 17162 0gc0g 17364 Grpcgrp 18868 SubGrpcsubg 19055 |
| 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 7683 ax-cnex 11087 ax-resscn 11088 ax-1cn 11089 ax-icn 11090 ax-addcl 11091 ax-addrcl 11092 ax-mulcl 11093 ax-mulrcl 11094 ax-mulcom 11095 ax-addass 11096 ax-mulass 11097 ax-distr 11098 ax-i2m1 11099 ax-1ne0 11100 ax-1rid 11101 ax-rnegex 11102 ax-rrecex 11103 ax-cnre 11104 ax-pre-lttri 11105 ax-pre-lttrn 11106 ax-pre-ltadd 11107 ax-pre-mulgt0 11108 |
| 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 7318 df-ov 7364 df-oprab 7365 df-mpo 7366 df-om 7812 df-2nd 7937 df-frecs 8226 df-wrecs 8257 df-recs 8306 df-rdg 8344 df-er 8638 df-en 8889 df-dom 8890 df-sdom 8891 df-pnf 11173 df-mnf 11174 df-xr 11175 df-ltxr 11176 df-le 11177 df-sub 11371 df-neg 11372 df-nn 12151 df-2 12213 df-sets 17096 df-slot 17114 df-ndx 17126 df-base 17142 df-ress 17163 df-plusg 17195 df-0g 17366 df-mgm 18570 df-sgrp 18649 df-mnd 18665 df-grp 18871 df-subg 19058 |
| This theorem is referenced by: subgmulgcl 19074 issubg3 19079 issubg4 19080 subgint 19085 trivsubgd 19087 eqger 19112 ghmpreima 19172 subgga 19234 gasubg 19236 sylow1lem5 19536 sylow2blem2 19555 sylow2blem3 19556 fislw 19559 sylow3lem3 19563 sylow3lem4 19564 lsm01 19605 lsm02 19606 lsmdisj 19615 lsmdisj2 19616 pj1lid 19635 pj1rid 19636 dmdprdd 19935 dprdfid 19953 dprdfeq0 19958 dprdsubg 19960 dprdres 19964 dprdz 19966 dprdsn 19972 dmdprdsplitlem 19973 dprddisj2 19975 dprd2da 19978 dmdprdsplit2lem 19981 ablfacrp 20002 ablfacrp2 20003 ablfac1c 20007 ablfac1eu 20009 pgpfac1lem3a 20012 pgpfac1lem3 20013 pgpfac1lem5 20015 pgpfaclem2 20018 pgpfaclem3 20019 prmgrpsimpgd 20050 primefld0cl 20744 abvres 20769 islss4 20918 dflidl2rng 21178 rnglidlrng 21207 rng2idl0 21227 rng2idlsubg0 21230 2idlcpblrng 21231 rng2idl1cntr 21265 subrgpsr 21938 mpllsslem 21960 0elcpmat 22671 opnsubg 24057 clssubg 24058 tgpconncompss 24063 plypf1 26178 dvply2g 26253 dvply2gOLD 26254 efsubm 26521 dchrptlem3 27238 gsumsubg 33132 elrgspnlem4 33331 subrdom 33371 nsgqus0 33495 nsgqusf1olem1 33498 ressply1evls1 33650 ressply10g 33652 ressply1invg 33654 vr1nz 33678 drgext0gsca 33761 fedgmullem2 33800 fldextrspunlsplem 33843 fldextrspunlsp 33844 extdgfialglem1 33862 extdgfialglem2 33863 algextdeglem4 33890 algextdeglem5 33891 rtelextdg2lem 33896 fsumcnsrcl 43486 cnsrplycl 43487 rngunsnply 43489 |
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