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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 2733 | . . . 4 ⊢ (𝐺 ↾s 𝑆) = (𝐺 ↾s 𝑆) | |
| 2 | 1 | subggrp 19052 | . . 3 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → (𝐺 ↾s 𝑆) ∈ Grp) |
| 3 | eqid 2733 | . . . 4 ⊢ (Base‘(𝐺 ↾s 𝑆)) = (Base‘(𝐺 ↾s 𝑆)) | |
| 4 | eqid 2733 | . . . 4 ⊢ (0g‘(𝐺 ↾s 𝑆)) = (0g‘(𝐺 ↾s 𝑆)) | |
| 5 | 3, 4 | grpidcl 18888 | . . 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 19055 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 0 = (0g‘(𝐺 ↾s 𝑆))) |
| 9 | 1 | subgbas 19053 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝑆 = (Base‘(𝐺 ↾s 𝑆))) |
| 10 | 6, 8, 9 | 3eltr4d 2848 | 1 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 0 ∈ 𝑆) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1541 ∈ wcel 2113 ‘cfv 6489 (class class class)co 7355 Basecbs 17130 ↾s cress 17151 0gc0g 17353 Grpcgrp 18856 SubGrpcsubg 19043 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2182 ax-ext 2705 ax-sep 5238 ax-nul 5248 ax-pow 5307 ax-pr 5374 ax-un 7677 ax-cnex 11072 ax-resscn 11073 ax-1cn 11074 ax-icn 11075 ax-addcl 11076 ax-addrcl 11077 ax-mulcl 11078 ax-mulrcl 11079 ax-mulcom 11080 ax-addass 11081 ax-mulass 11082 ax-distr 11083 ax-i2m1 11084 ax-1ne0 11085 ax-1rid 11086 ax-rnegex 11087 ax-rrecex 11088 ax-cnre 11089 ax-pre-lttri 11090 ax-pre-lttrn 11091 ax-pre-ltadd 11092 ax-pre-mulgt0 11093 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2537 df-eu 2566 df-clab 2712 df-cleq 2725 df-clel 2808 df-nfc 2883 df-ne 2931 df-nel 3035 df-ral 3050 df-rex 3059 df-rmo 3348 df-reu 3349 df-rab 3398 df-v 3440 df-sbc 3739 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4285 df-if 4477 df-pw 4553 df-sn 4578 df-pr 4580 df-op 4584 df-uni 4861 df-iun 4945 df-br 5096 df-opab 5158 df-mpt 5177 df-tr 5203 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 7312 df-ov 7358 df-oprab 7359 df-mpo 7360 df-om 7806 df-2nd 7931 df-frecs 8220 df-wrecs 8251 df-recs 8300 df-rdg 8338 df-er 8631 df-en 8879 df-dom 8880 df-sdom 8881 df-pnf 11158 df-mnf 11159 df-xr 11160 df-ltxr 11161 df-le 11162 df-sub 11356 df-neg 11357 df-nn 12136 df-2 12198 df-sets 17085 df-slot 17103 df-ndx 17115 df-base 17131 df-ress 17152 df-plusg 17184 df-0g 17355 df-mgm 18558 df-sgrp 18637 df-mnd 18653 df-grp 18859 df-subg 19046 |
| This theorem is referenced by: subgmulgcl 19062 issubg3 19067 issubg4 19068 subgint 19073 trivsubgd 19075 eqger 19100 ghmpreima 19160 subgga 19222 gasubg 19224 sylow1lem5 19524 sylow2blem2 19543 sylow2blem3 19544 fislw 19547 sylow3lem3 19551 sylow3lem4 19552 lsm01 19593 lsm02 19594 lsmdisj 19603 lsmdisj2 19604 pj1lid 19623 pj1rid 19624 dmdprdd 19923 dprdfid 19941 dprdfeq0 19946 dprdsubg 19948 dprdres 19952 dprdz 19954 dprdsn 19960 dmdprdsplitlem 19961 dprddisj2 19963 dprd2da 19966 dmdprdsplit2lem 19969 ablfacrp 19990 ablfacrp2 19991 ablfac1c 19995 ablfac1eu 19997 pgpfac1lem3a 20000 pgpfac1lem3 20001 pgpfac1lem5 20003 pgpfaclem2 20006 pgpfaclem3 20007 prmgrpsimpgd 20038 primefld0cl 20731 abvres 20756 islss4 20905 dflidl2rng 21165 rnglidlrng 21194 rng2idl0 21214 rng2idlsubg0 21217 2idlcpblrng 21218 rng2idl1cntr 21252 subrgpsr 21925 mpllsslem 21947 0elcpmat 22647 opnsubg 24033 clssubg 24034 tgpconncompss 24039 plypf1 26154 dvply2g 26229 dvply2gOLD 26230 efsubm 26497 dchrptlem3 27214 gsumsubg 33037 elrgspnlem4 33223 subrdom 33262 nsgqus0 33386 nsgqusf1olem1 33389 ressply1evls1 33539 ressply10g 33541 ressply1invg 33543 vr1nz 33565 drgext0gsca 33615 fedgmullem2 33654 fldextrspunlsplem 33697 fldextrspunlsp 33698 extdgfialglem1 33716 extdgfialglem2 33717 algextdeglem4 33744 algextdeglem5 33745 rtelextdg2lem 33750 fsumcnsrcl 43273 cnsrplycl 43274 rngunsnply 43276 |
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