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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 2735 | . . . 4 ⊢ (𝐺 ↾s 𝑆) = (𝐺 ↾s 𝑆) | |
| 2 | 1 | subggrp 19094 | . . 3 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → (𝐺 ↾s 𝑆) ∈ Grp) |
| 3 | eqid 2735 | . . . 4 ⊢ (Base‘(𝐺 ↾s 𝑆)) = (Base‘(𝐺 ↾s 𝑆)) | |
| 4 | eqid 2735 | . . . 4 ⊢ (0g‘(𝐺 ↾s 𝑆)) = (0g‘(𝐺 ↾s 𝑆)) | |
| 5 | 3, 4 | grpidcl 18930 | . . 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 19097 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 0 = (0g‘(𝐺 ↾s 𝑆))) |
| 9 | 1 | subgbas 19095 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝑆 = (Base‘(𝐺 ↾s 𝑆))) |
| 10 | 6, 8, 9 | 3eltr4d 2850 | 1 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 0 ∈ 𝑆) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1542 ∈ wcel 2114 ‘cfv 6487 (class class class)co 7356 Basecbs 17168 ↾s cress 17189 0gc0g 17391 Grpcgrp 18898 SubGrpcsubg 19085 |
| 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 2184 ax-ext 2707 ax-sep 5220 ax-nul 5230 ax-pow 5296 ax-pr 5364 ax-un 7678 ax-cnex 11083 ax-resscn 11084 ax-1cn 11085 ax-icn 11086 ax-addcl 11087 ax-addrcl 11088 ax-mulcl 11089 ax-mulrcl 11090 ax-mulcom 11091 ax-addass 11092 ax-mulass 11093 ax-distr 11094 ax-i2m1 11095 ax-1ne0 11096 ax-1rid 11097 ax-rnegex 11098 ax-rrecex 11099 ax-cnre 11100 ax-pre-lttri 11101 ax-pre-lttrn 11102 ax-pre-ltadd 11103 ax-pre-mulgt0 11104 |
| 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 2538 df-eu 2568 df-clab 2714 df-cleq 2727 df-clel 2810 df-nfc 2884 df-ne 2931 df-nel 3035 df-ral 3050 df-rex 3060 df-rmo 3340 df-reu 3341 df-rab 3388 df-v 3429 df-sbc 3726 df-csb 3834 df-dif 3888 df-un 3890 df-in 3892 df-ss 3902 df-pss 3905 df-nul 4264 df-if 4457 df-pw 4533 df-sn 4558 df-pr 4560 df-op 4564 df-uni 4841 df-iun 4925 df-br 5075 df-opab 5137 df-mpt 5156 df-tr 5182 df-id 5515 df-eprel 5520 df-po 5528 df-so 5529 df-fr 5573 df-we 5575 df-xp 5626 df-rel 5627 df-cnv 5628 df-co 5629 df-dm 5630 df-rn 5631 df-res 5632 df-ima 5633 df-pred 6254 df-ord 6315 df-on 6316 df-lim 6317 df-suc 6318 df-iota 6443 df-fun 6489 df-fn 6490 df-f 6491 df-f1 6492 df-fo 6493 df-f1o 6494 df-fv 6495 df-riota 7313 df-ov 7359 df-oprab 7360 df-mpo 7361 df-om 7807 df-2nd 7932 df-frecs 8220 df-wrecs 8251 df-recs 8300 df-rdg 8338 df-er 8632 df-en 8883 df-dom 8884 df-sdom 8885 df-pnf 11170 df-mnf 11171 df-xr 11172 df-ltxr 11173 df-le 11174 df-sub 11368 df-neg 11369 df-nn 12164 df-2 12233 df-sets 17123 df-slot 17141 df-ndx 17153 df-base 17169 df-ress 17190 df-plusg 17222 df-0g 17393 df-mgm 18597 df-sgrp 18676 df-mnd 18692 df-grp 18901 df-subg 19088 |
| This theorem is referenced by: subgmulgcl 19104 issubg3 19109 issubg4 19110 subgint 19115 trivsubgd 19117 eqger 19142 ghmpreima 19202 subgga 19264 gasubg 19266 sylow1lem5 19566 sylow2blem2 19585 sylow2blem3 19586 fislw 19589 sylow3lem3 19593 sylow3lem4 19594 lsm01 19635 lsm02 19636 lsmdisj 19645 lsmdisj2 19646 pj1lid 19665 pj1rid 19666 dmdprdd 19965 dprdfid 19983 dprdfeq0 19988 dprdsubg 19990 dprdres 19994 dprdz 19996 dprdsn 20002 dmdprdsplitlem 20003 dprddisj2 20005 dprd2da 20008 dmdprdsplit2lem 20011 ablfacrp 20032 ablfacrp2 20033 ablfac1c 20037 ablfac1eu 20039 pgpfac1lem3a 20042 pgpfac1lem3 20043 pgpfac1lem5 20045 pgpfaclem2 20048 pgpfaclem3 20049 prmgrpsimpgd 20080 primefld0cl 20772 abvres 20797 islss4 20946 dflidl2rng 21205 rnglidlrng 21234 rng2idl0 21254 rng2idlsubg0 21257 2idlcpblrng 21258 rng2idl1cntr 21292 subrgpsr 21945 mpllsslem 21967 0elcpmat 22675 opnsubg 24061 clssubg 24062 tgpconncompss 24067 plypf1 26165 dvply2g 26239 efsubm 26503 dchrptlem3 27217 gsumsubg 33095 elrgspnlem4 33294 subrdom 33334 nsgqus0 33458 nsgqusf1olem1 33461 ressply1evls1 33613 ressply10g 33615 ressply1invg 33617 vr1nz 33641 drgext0gsca 33724 fedgmullem2 33762 fldextrspunlsplem 33805 fldextrspunlsp 33806 extdgfialglem1 33824 extdgfialglem2 33825 algextdeglem4 33852 algextdeglem5 33853 rtelextdg2lem 33858 fsumcnsrcl 43582 cnsrplycl 43583 rngunsnply 43585 |
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