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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 2760 | . . . 4 ⊢ (𝐺 ↾s 𝑆) = (𝐺 ↾s 𝑆) | |
| 2 | 1 | subggrp 19339 | . . 3 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → (𝐺 ↾s 𝑆) ∈ Grp) |
| 3 | eqid 2760 | . . . 4 ⊢ (Base‘(𝐺 ↾s 𝑆)) = (Base‘(𝐺 ↾s 𝑆)) | |
| 4 | eqid 2760 | . . . 4 ⊢ (0g‘(𝐺 ↾s 𝑆)) = (0g‘(𝐺 ↾s 𝑆)) | |
| 5 | 3, 4 | grpidcl 19176 | . . 3 ⊢ ((𝐺 ↾s 𝑆) ∈ Grp → (0g‘(𝐺 ↾s 𝑆)) ∈ (Base‘(𝐺 ↾s 𝑆))) |
| 6 | 2, 5 | syl 18 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → (0g‘(𝐺 ↾s 𝑆)) ∈ (Base‘(𝐺 ↾s 𝑆))) |
| 7 | subg0cl.i | . . 3 ⊢ 0 = (0g‘𝐺) | |
| 8 | 1, 7 | subg0 19342 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 0 = (0g‘(𝐺 ↾s 𝑆))) |
| 9 | 1 | subgbas 19340 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝑆 = (Base‘(𝐺 ↾s 𝑆))) |
| 10 | 6, 8, 9 | 3eltr4d 2875 | 1 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 0 ∈ 𝑆) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1569 ∈ wcel 2144 ‘cfv 6538 (class class class)co 7420 Basecbs 17387 ↾s cress 17408 0gc0g 17610 Grpcgrp 19144 SubGrpcsubg 19330 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7751 ax-cnex 11256 ax-resscn 11257 ax-1cn 11258 ax-icn 11259 ax-addcl 11260 ax-addrcl 11261 ax-mulcl 11262 ax-mulrcl 11263 ax-mulcom 11264 ax-addass 11265 ax-mulass 11266 ax-distr 11267 ax-i2m1 11268 ax-1ne0 11269 ax-1rid 11270 ax-rnegex 11271 ax-rrecex 11272 ax-cnre 11273 ax-pre-lttri 11274 ax-pre-lttrn 11275 ax-pre-ltadd 11276 ax-pre-mulgt0 11277 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-rmo 3365 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-ss 3896 df-pss 4014 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5545 df-eprel 5550 df-po 5558 df-so 5559 df-fr 5603 df-we 5605 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-pred 6304 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-riota 7377 df-ov 7423 df-oprab 7424 df-mpo 7425 df-om 7878 df-2nd 8002 df-frecs 8299 df-wrecs 8330 df-recs 8379 df-rdg 8418 df-er 8717 df-en 8974 df-dom 8975 df-sdom 8976 df-pnf 11345 df-mnf 11346 df-xr 11347 df-ltxr 11348 df-le 11349 df-sub 11543 df-neg 11544 df-nn 12336 df-2 12405 df-sets 17342 df-slot 17360 df-ndx 17372 df-base 17388 df-ress 17409 df-plusg 17441 df-0g 17612 df-mgm 18816 df-sgrp 18908 df-mnd 18924 df-grp 19147 df-subg 19333 |
| This theorem is used by: subgmulgcl 19350 issubg3 19355 issubg4 19356 subgint 19361 trivsubgd 19363 eqger 19390 ghmpreima 19452 subgga 19514 gasubg 19516 sylow1lem5 19816 sylow2blem2 19835 sylow2blem3 19836 fislw 19839 sylow3lem3 19843 sylow3lem4 19844 lsm01 19885 lsm02 19886 lsmdisj 19895 lsmdisj2 19896 pj1lid 19915 pj1rid 19916 dmdprdd 20215 dprdfid 20233 dprdfeq0 20238 dprdsubg 20240 dprdres 20244 dprdz 20246 dprdsn 20252 dmdprdsplitlem 20253 dprddisj2 20255 dprd2da 20258 dmdprdsplit2lem 20261 ablfacrp 20282 ablfacrp2 20283 ablfac1c 20287 ablfac1eu 20289 pgpfac1lem3a 20292 pgpfac1lem3 20293 pgpfac1lem5 20295 pgpfaclem2 20298 pgpfaclem3 20299 prmgrpsimpgd 20330 primefld0cl 21063 abvres 21088 islss4 21237 dflidl2rng 21497 rnglidlrng 21535 rng2idl0 21561 rng2idlsubg0 21564 2idlcpblrng 21565 rng2idl1cntr 21601 subrgpsr 22285 mpllsslem 22307 0elcpmat 23040 opnsubg 24427 clssubg 24428 tgpconncompss 24433 plypf1 26531 dvply2g 26606 efsubm 26879 dchrptlem3 27593 gsumsubg 33649 elrgspnlem4 33848 subrdom 33888 nsgqus0 34003 nsgqusf1olem1 34006 ressply1evls1 34139 ressply10g 34141 ressply1invg 34143 vr1nz 34167 drgext0gsca 34266 fedgmullem2 34304 fldextrspunlsplem 34347 fldextrspunlsp 34348 extdgfialglem1 34366 extdgfialglem2 34367 algextdeglem4 34394 algextdeglem5 34395 rtelextdg2lem 34400 fsumcnsrcl 44211 cnsrplycl 44212 rngunsnply 44214 |
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