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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 2763 | . . . 4 ⊢ (𝐺 ↾s 𝑆) = (𝐺 ↾s 𝑆) | |
| 2 | 1 | subggrp 19181 | . . 3 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → (𝐺 ↾s 𝑆) ∈ Grp) |
| 3 | eqid 2763 | . . . 4 ⊢ (Base‘(𝐺 ↾s 𝑆)) = (Base‘(𝐺 ↾s 𝑆)) | |
| 4 | eqid 2763 | . . . 4 ⊢ (0g‘(𝐺 ↾s 𝑆)) = (0g‘(𝐺 ↾s 𝑆)) | |
| 5 | 3, 4 | grpidcl 19017 | . . 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 19184 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 0 = (0g‘(𝐺 ↾s 𝑆))) |
| 9 | 1 | subgbas 19182 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝑆 = (Base‘(𝐺 ↾s 𝑆))) |
| 10 | 6, 8, 9 | 3eltr4d 2878 | 1 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 0 ∈ 𝑆) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1561 ∈ wcel 2143 ‘cfv 6521 (class class class)co 7396 Basecbs 17255 ↾s cress 17276 0gc0g 17478 Grpcgrp 18985 SubGrpcsubg 19172 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1816 ax-4 1830 ax-5 1931 ax-6 1988 ax-7 2029 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-sep 5247 ax-nul 5257 ax-pow 5323 ax-pr 5391 ax-un 7718 ax-cnex 11140 ax-resscn 11141 ax-1cn 11142 ax-icn 11143 ax-addcl 11144 ax-addrcl 11145 ax-mulcl 11146 ax-mulrcl 11147 ax-mulcom 11148 ax-addass 11149 ax-mulass 11150 ax-distr 11151 ax-i2m1 11152 ax-1ne0 11153 ax-1rid 11154 ax-rnegex 11155 ax-rrecex 11156 ax-cnre 11157 ax-pre-lttri 11158 ax-pre-lttrn 11159 ax-pre-ltadd 11160 ax-pre-mulgt0 11161 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1100 df-3an 1101 df-tru 1564 df-fal 1574 df-ex 1801 df-nf 1805 df-sb 2092 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-nel 3063 df-ral 3078 df-rex 3088 df-rmo 3368 df-reu 3369 df-rab 3416 df-v 3457 df-sbc 3746 df-csb 3854 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-pss 3925 df-nul 4287 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-iun 4952 df-br 5102 df-opab 5164 df-mpt 5183 df-tr 5209 df-id 5543 df-eprel 5548 df-po 5556 df-so 5557 df-fr 5601 df-we 5603 df-xp 5654 df-rel 5655 df-cnv 5656 df-co 5657 df-dm 5658 df-rn 5659 df-res 5660 df-ima 5661 df-pred 6288 df-ord 6349 df-on 6350 df-lim 6351 df-suc 6352 df-iota 6477 df-fun 6523 df-fn 6524 df-f 6525 df-f1 6526 df-fo 6527 df-f1o 6528 df-fv 6529 df-riota 7353 df-ov 7399 df-oprab 7400 df-mpo 7401 df-om 7847 df-2nd 7971 df-frecs 8262 df-wrecs 8293 df-recs 8342 df-rdg 8381 df-er 8678 df-en 8928 df-dom 8929 df-sdom 8930 df-pnf 11229 df-mnf 11230 df-xr 11231 df-ltxr 11232 df-le 11233 df-sub 11427 df-neg 11428 df-nn 12221 df-2 12290 df-sets 17210 df-slot 17228 df-ndx 17240 df-base 17256 df-ress 17277 df-plusg 17309 df-0g 17480 df-mgm 18684 df-sgrp 18763 df-mnd 18779 df-grp 18988 df-subg 19175 |
| This theorem is referenced by: subgmulgcl 19191 issubg3 19196 issubg4 19197 subgint 19202 trivsubgd 19204 eqger 19229 ghmpreima 19288 subgga 19350 gasubg 19352 sylow1lem5 19652 sylow2blem2 19671 sylow2blem3 19672 fislw 19675 sylow3lem3 19679 sylow3lem4 19680 lsm01 19721 lsm02 19722 lsmdisj 19731 lsmdisj2 19732 pj1lid 19751 pj1rid 19752 dmdprdd 20051 dprdfid 20069 dprdfeq0 20074 dprdsubg 20076 dprdres 20080 dprdz 20082 dprdsn 20088 dmdprdsplitlem 20089 dprddisj2 20091 dprd2da 20094 dmdprdsplit2lem 20097 ablfacrp 20118 ablfacrp2 20119 ablfac1c 20123 ablfac1eu 20125 pgpfac1lem3a 20128 pgpfac1lem3 20129 pgpfac1lem5 20131 pgpfaclem2 20134 pgpfaclem3 20135 prmgrpsimpgd 20166 primefld0cl 20862 abvres 20887 islss4 21036 dflidl2rng 21295 rnglidlrng 21324 rng2idl0 21344 rng2idlsubg0 21347 2idlcpblrng 21348 rng2idl1cntr 21382 subrgpsr 22036 mpllsslem 22058 0elcpmat 22789 opnsubg 24175 clssubg 24176 tgpconncompss 24181 plypf1 26279 dvply2g 26356 efsubm 26623 dchrptlem3 27337 gsumsubg 33232 elrgspnlem4 33432 subrdom 33472 nsgqus0 33599 nsgqusf1olem1 33602 ressply1evls1 33764 ressply10g 33766 ressply1invg 33768 vr1nz 33792 drgext0gsca 33891 fedgmullem2 33929 fldextrspunlsplem 33972 fldextrspunlsp 33973 extdgfialglem1 33991 extdgfialglem2 33992 algextdeglem4 34019 algextdeglem5 34020 rtelextdg2lem 34025 fsumcnsrcl 43748 cnsrplycl 43749 rngunsnply 43751 |
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