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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 2741 | . . . 4 ⊢ (𝐺 ↾s 𝑆) = (𝐺 ↾s 𝑆) | |
| 2 | 1 | subggrp 19100 | . . 3 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → (𝐺 ↾s 𝑆) ∈ Grp) |
| 3 | eqid 2741 | . . . 4 ⊢ (Base‘(𝐺 ↾s 𝑆)) = (Base‘(𝐺 ↾s 𝑆)) | |
| 4 | eqid 2741 | . . . 4 ⊢ (0g‘(𝐺 ↾s 𝑆)) = (0g‘(𝐺 ↾s 𝑆)) | |
| 5 | 3, 4 | grpidcl 18936 | . . 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 19103 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 0 = (0g‘(𝐺 ↾s 𝑆))) |
| 9 | 1 | subgbas 19101 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝑆 = (Base‘(𝐺 ↾s 𝑆))) |
| 10 | 6, 8, 9 | 3eltr4d 2856 | 1 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 0 ∈ 𝑆) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1548 ∈ wcel 2121 ‘cfv 6489 (class class class)co 7360 Basecbs 17174 ↾s cress 17195 0gc0g 17397 Grpcgrp 18904 SubGrpcsubg 19091 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1975 ax-7 2016 ax-8 2123 ax-9 2131 ax-10 2154 ax-11 2170 ax-12 2191 ax-ext 2713 ax-sep 5221 ax-nul 5231 ax-pow 5297 ax-pr 5365 ax-un 7682 ax-cnex 11089 ax-resscn 11090 ax-1cn 11091 ax-icn 11092 ax-addcl 11093 ax-addrcl 11094 ax-mulcl 11095 ax-mulrcl 11096 ax-mulcom 11097 ax-addass 11098 ax-mulass 11099 ax-distr 11100 ax-i2m1 11101 ax-1ne0 11102 ax-1rid 11103 ax-rnegex 11104 ax-rrecex 11105 ax-cnre 11106 ax-pre-lttri 11107 ax-pre-lttrn 11108 ax-pre-ltadd 11109 ax-pre-mulgt0 11110 |
| This theorem depends on definitions: df-bi 209 df-an 398 df-or 855 df-3or 1094 df-3an 1095 df-tru 1551 df-fal 1561 df-ex 1788 df-nf 1792 df-sb 2075 df-mo 2545 df-eu 2575 df-clab 2720 df-cleq 2733 df-clel 2816 df-nfc 2890 df-ne 2937 df-nel 3041 df-ral 3056 df-rex 3066 df-rmo 3346 df-reu 3347 df-rab 3394 df-v 3435 df-sbc 3726 df-csb 3834 df-dif 3888 df-un 3890 df-in 3892 df-ss 3902 df-pss 3905 df-nul 4265 df-if 4458 df-pw 4534 df-sn 4559 df-pr 4561 df-op 4565 df-uni 4842 df-iun 4926 df-br 5076 df-opab 5138 df-mpt 5157 df-tr 5183 df-id 5516 df-eprel 5521 df-po 5529 df-so 5530 df-fr 5574 df-we 5576 df-xp 5627 df-rel 5628 df-cnv 5629 df-co 5630 df-dm 5631 df-rn 5632 df-res 5633 df-ima 5634 df-pred 6256 df-ord 6317 df-on 6318 df-lim 6319 df-suc 6320 df-iota 6445 df-fun 6491 df-fn 6492 df-f 6493 df-f1 6494 df-fo 6495 df-f1o 6496 df-fv 6497 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 11176 df-mnf 11177 df-xr 11178 df-ltxr 11179 df-le 11180 df-sub 11374 df-neg 11375 df-nn 12170 df-2 12239 df-sets 17129 df-slot 17147 df-ndx 17159 df-base 17175 df-ress 17196 df-plusg 17228 df-0g 17399 df-mgm 18603 df-sgrp 18682 df-mnd 18698 df-grp 18907 df-subg 19094 |
| This theorem is referenced by: subgmulgcl 19110 issubg3 19115 issubg4 19116 subgint 19121 trivsubgd 19123 eqger 19148 ghmpreima 19208 subgga 19270 gasubg 19272 sylow1lem5 19572 sylow2blem2 19591 sylow2blem3 19592 fislw 19595 sylow3lem3 19599 sylow3lem4 19600 lsm01 19641 lsm02 19642 lsmdisj 19651 lsmdisj2 19652 pj1lid 19671 pj1rid 19672 dmdprdd 19971 dprdfid 19989 dprdfeq0 19994 dprdsubg 19996 dprdres 20000 dprdz 20002 dprdsn 20008 dmdprdsplitlem 20009 dprddisj2 20011 dprd2da 20014 dmdprdsplit2lem 20017 ablfacrp 20038 ablfacrp2 20039 ablfac1c 20043 ablfac1eu 20045 pgpfac1lem3a 20048 pgpfac1lem3 20049 pgpfac1lem5 20051 pgpfaclem2 20054 pgpfaclem3 20055 prmgrpsimpgd 20086 primefld0cl 20782 abvres 20807 islss4 20956 dflidl2rng 21215 rnglidlrng 21244 rng2idl0 21264 rng2idlsubg0 21267 2idlcpblrng 21268 rng2idl1cntr 21302 subrgpsr 21956 mpllsslem 21978 0elcpmat 22709 opnsubg 24095 clssubg 24096 tgpconncompss 24101 plypf1 26199 dvply2g 26273 efsubm 26537 dchrptlem3 27251 gsumsubg 33131 elrgspnlem4 33330 subrdom 33370 nsgqus0 33497 nsgqusf1olem1 33500 ressply1evls1 33660 ressply10g 33662 ressply1invg 33664 vr1nz 33688 drgext0gsca 33788 fedgmullem2 33826 fldextrspunlsplem 33869 fldextrspunlsp 33870 extdgfialglem1 33888 extdgfialglem2 33889 algextdeglem4 33916 algextdeglem5 33917 rtelextdg2lem 33922 fsumcnsrcl 43626 cnsrplycl 43627 rngunsnply 43629 |
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