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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 2752 | . . . 4 ⊢ (𝐺 ↾s 𝑆) = (𝐺 ↾s 𝑆) | |
| 2 | 1 | subggrp 19143 | . . 3 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → (𝐺 ↾s 𝑆) ∈ Grp) |
| 3 | eqid 2752 | . . . 4 ⊢ (Base‘(𝐺 ↾s 𝑆)) = (Base‘(𝐺 ↾s 𝑆)) | |
| 4 | eqid 2752 | . . . 4 ⊢ (0g‘(𝐺 ↾s 𝑆)) = (0g‘(𝐺 ↾s 𝑆)) | |
| 5 | 3, 4 | grpidcl 18979 | . . 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 19146 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 0 = (0g‘(𝐺 ↾s 𝑆))) |
| 9 | 1 | subgbas 19144 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝑆 = (Base‘(𝐺 ↾s 𝑆))) |
| 10 | 6, 8, 9 | 3eltr4d 2867 | 1 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 0 ∈ 𝑆) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1550 ∈ wcel 2132 ‘cfv 6506 (class class class)co 7381 Basecbs 17217 ↾s cress 17238 0gc0g 17440 Grpcgrp 18947 SubGrpcsubg 19134 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1805 ax-4 1819 ax-5 1920 ax-6 1977 ax-7 2018 ax-8 2134 ax-9 2142 ax-10 2165 ax-11 2181 ax-12 2202 ax-ext 2724 ax-sep 5236 ax-nul 5246 ax-pow 5312 ax-pr 5380 ax-un 7703 ax-cnex 11115 ax-resscn 11116 ax-1cn 11117 ax-icn 11118 ax-addcl 11119 ax-addrcl 11120 ax-mulcl 11121 ax-mulrcl 11122 ax-mulcom 11123 ax-addass 11124 ax-mulass 11125 ax-distr 11126 ax-i2m1 11127 ax-1ne0 11128 ax-1rid 11129 ax-rnegex 11130 ax-rrecex 11131 ax-cnre 11132 ax-pre-lttri 11133 ax-pre-lttrn 11134 ax-pre-ltadd 11135 ax-pre-mulgt0 11136 |
| This theorem depends on definitions: df-bi 209 df-an 399 df-or 857 df-3or 1096 df-3an 1097 df-tru 1553 df-fal 1563 df-ex 1790 df-nf 1794 df-sb 2081 df-mo 2556 df-eu 2586 df-clab 2731 df-cleq 2744 df-clel 2827 df-nfc 2901 df-ne 2948 df-nel 3052 df-ral 3067 df-rex 3077 df-rmo 3357 df-reu 3358 df-rab 3405 df-v 3446 df-sbc 3736 df-csb 3844 df-dif 3898 df-un 3900 df-in 3902 df-ss 3912 df-pss 3915 df-nul 4277 df-if 4471 df-pw 4547 df-sn 4573 df-pr 4575 df-op 4579 df-uni 4856 df-iun 4941 df-br 5091 df-opab 5153 df-mpt 5172 df-tr 5198 df-id 5531 df-eprel 5536 df-po 5544 df-so 5545 df-fr 5589 df-we 5591 df-xp 5642 df-rel 5643 df-cnv 5644 df-co 5645 df-dm 5646 df-rn 5647 df-res 5648 df-ima 5649 df-pred 6273 df-ord 6334 df-on 6335 df-lim 6336 df-suc 6337 df-iota 6462 df-fun 6508 df-fn 6509 df-f 6510 df-f1 6511 df-fo 6512 df-f1o 6513 df-fv 6514 df-riota 7338 df-ov 7384 df-oprab 7385 df-mpo 7386 df-om 7832 df-2nd 7956 df-frecs 8246 df-wrecs 8277 df-recs 8326 df-rdg 8365 df-er 8662 df-en 8913 df-dom 8914 df-sdom 8915 df-pnf 11204 df-mnf 11205 df-xr 11206 df-ltxr 11207 df-le 11208 df-sub 11402 df-neg 11403 df-nn 12197 df-2 12266 df-sets 17172 df-slot 17190 df-ndx 17202 df-base 17218 df-ress 17239 df-plusg 17271 df-0g 17442 df-mgm 18646 df-sgrp 18725 df-mnd 18741 df-grp 18950 df-subg 19137 |
| This theorem is referenced by: subgmulgcl 19153 issubg3 19158 issubg4 19159 subgint 19164 trivsubgd 19166 eqger 19191 ghmpreima 19250 subgga 19312 gasubg 19314 sylow1lem5 19614 sylow2blem2 19633 sylow2blem3 19634 fislw 19637 sylow3lem3 19641 sylow3lem4 19642 lsm01 19683 lsm02 19684 lsmdisj 19693 lsmdisj2 19694 pj1lid 19713 pj1rid 19714 dmdprdd 20013 dprdfid 20031 dprdfeq0 20036 dprdsubg 20038 dprdres 20042 dprdz 20044 dprdsn 20050 dmdprdsplitlem 20051 dprddisj2 20053 dprd2da 20056 dmdprdsplit2lem 20059 ablfacrp 20080 ablfacrp2 20081 ablfac1c 20085 ablfac1eu 20087 pgpfac1lem3a 20090 pgpfac1lem3 20091 pgpfac1lem5 20093 pgpfaclem2 20096 pgpfaclem3 20097 prmgrpsimpgd 20128 primefld0cl 20824 abvres 20849 islss4 20998 dflidl2rng 21257 rnglidlrng 21286 rng2idl0 21306 rng2idlsubg0 21309 2idlcpblrng 21310 rng2idl1cntr 21344 subrgpsr 21998 mpllsslem 22020 0elcpmat 22751 opnsubg 24137 clssubg 24138 tgpconncompss 24143 plypf1 26241 dvply2g 26315 efsubm 26582 dchrptlem3 27296 gsumsubg 33176 elrgspnlem4 33375 subrdom 33415 nsgqus0 33542 nsgqusf1olem1 33545 ressply1evls1 33705 ressply10g 33707 ressply1invg 33709 vr1nz 33733 drgext0gsca 33833 fedgmullem2 33871 fldextrspunlsplem 33914 fldextrspunlsp 33915 extdgfialglem1 33933 extdgfialglem2 33934 algextdeglem4 33961 algextdeglem5 33962 rtelextdg2lem 33967 fsumcnsrcl 43681 cnsrplycl 43682 rngunsnply 43684 |
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