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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 2730 | . . . 4 ⊢ (𝐺 ↾s 𝑆) = (𝐺 ↾s 𝑆) | |
| 2 | 1 | subggrp 19034 | . . 3 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → (𝐺 ↾s 𝑆) ∈ Grp) |
| 3 | eqid 2730 | . . . 4 ⊢ (Base‘(𝐺 ↾s 𝑆)) = (Base‘(𝐺 ↾s 𝑆)) | |
| 4 | eqid 2730 | . . . 4 ⊢ (0g‘(𝐺 ↾s 𝑆)) = (0g‘(𝐺 ↾s 𝑆)) | |
| 5 | 3, 4 | grpidcl 18870 | . . 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 19037 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 0 = (0g‘(𝐺 ↾s 𝑆))) |
| 9 | 1 | subgbas 19035 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝑆 = (Base‘(𝐺 ↾s 𝑆))) |
| 10 | 6, 8, 9 | 3eltr4d 2844 | 1 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 0 ∈ 𝑆) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1541 ∈ wcel 2110 ‘cfv 6477 (class class class)co 7341 Basecbs 17112 ↾s cress 17133 0gc0g 17335 Grpcgrp 18838 SubGrpcsubg 19025 |
| 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 2112 ax-9 2120 ax-10 2143 ax-11 2159 ax-12 2179 ax-ext 2702 ax-sep 5232 ax-nul 5242 ax-pow 5301 ax-pr 5368 ax-un 7663 ax-cnex 11054 ax-resscn 11055 ax-1cn 11056 ax-icn 11057 ax-addcl 11058 ax-addrcl 11059 ax-mulcl 11060 ax-mulrcl 11061 ax-mulcom 11062 ax-addass 11063 ax-mulass 11064 ax-distr 11065 ax-i2m1 11066 ax-1ne0 11067 ax-1rid 11068 ax-rnegex 11069 ax-rrecex 11070 ax-cnre 11071 ax-pre-lttri 11072 ax-pre-lttrn 11073 ax-pre-ltadd 11074 ax-pre-mulgt0 11075 |
| 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 2067 df-mo 2534 df-eu 2563 df-clab 2709 df-cleq 2722 df-clel 2804 df-nfc 2879 df-ne 2927 df-nel 3031 df-ral 3046 df-rex 3055 df-rmo 3344 df-reu 3345 df-rab 3394 df-v 3436 df-sbc 3740 df-csb 3849 df-dif 3903 df-un 3905 df-in 3907 df-ss 3917 df-pss 3920 df-nul 4282 df-if 4474 df-pw 4550 df-sn 4575 df-pr 4577 df-op 4581 df-uni 4858 df-iun 4941 df-br 5090 df-opab 5152 df-mpt 5171 df-tr 5197 df-id 5509 df-eprel 5514 df-po 5522 df-so 5523 df-fr 5567 df-we 5569 df-xp 5620 df-rel 5621 df-cnv 5622 df-co 5623 df-dm 5624 df-rn 5625 df-res 5626 df-ima 5627 df-pred 6244 df-ord 6305 df-on 6306 df-lim 6307 df-suc 6308 df-iota 6433 df-fun 6479 df-fn 6480 df-f 6481 df-f1 6482 df-fo 6483 df-f1o 6484 df-fv 6485 df-riota 7298 df-ov 7344 df-oprab 7345 df-mpo 7346 df-om 7792 df-2nd 7917 df-frecs 8206 df-wrecs 8237 df-recs 8286 df-rdg 8324 df-er 8617 df-en 8865 df-dom 8866 df-sdom 8867 df-pnf 11140 df-mnf 11141 df-xr 11142 df-ltxr 11143 df-le 11144 df-sub 11338 df-neg 11339 df-nn 12118 df-2 12180 df-sets 17067 df-slot 17085 df-ndx 17097 df-base 17113 df-ress 17134 df-plusg 17166 df-0g 17337 df-mgm 18540 df-sgrp 18619 df-mnd 18635 df-grp 18841 df-subg 19028 |
| This theorem is referenced by: subgmulgcl 19044 issubg3 19049 issubg4 19050 subgint 19055 trivsubgd 19058 eqger 19083 ghmpreima 19143 subgga 19205 gasubg 19207 sylow1lem5 19507 sylow2blem2 19526 sylow2blem3 19527 fislw 19530 sylow3lem3 19534 sylow3lem4 19535 lsm01 19576 lsm02 19577 lsmdisj 19586 lsmdisj2 19587 pj1lid 19606 pj1rid 19607 dmdprdd 19906 dprdfid 19924 dprdfeq0 19929 dprdsubg 19931 dprdres 19935 dprdz 19937 dprdsn 19943 dmdprdsplitlem 19944 dprddisj2 19946 dprd2da 19949 dmdprdsplit2lem 19952 ablfacrp 19973 ablfacrp2 19974 ablfac1c 19978 ablfac1eu 19980 pgpfac1lem3a 19983 pgpfac1lem3 19984 pgpfac1lem5 19986 pgpfaclem2 19989 pgpfaclem3 19990 prmgrpsimpgd 20021 primefld0cl 20714 abvres 20739 islss4 20888 dflidl2rng 21148 rnglidlrng 21177 rng2idl0 21197 rng2idlsubg0 21200 2idlcpblrng 21201 rng2idl1cntr 21235 subrgpsr 21908 mpllsslem 21930 0elcpmat 22630 opnsubg 24016 clssubg 24017 tgpconncompss 24022 plypf1 26137 dvply2g 26212 dvply2gOLD 26213 efsubm 26480 dchrptlem3 27197 gsumsubg 33016 elrgspnlem4 33202 subrdom 33241 nsgqus0 33365 nsgqusf1olem1 33368 ressply1evls1 33518 ressply10g 33520 ressply1invg 33522 vr1nz 33544 drgext0gsca 33594 fedgmullem2 33633 fldextrspunlsplem 33676 fldextrspunlsp 33677 extdgfialglem1 33695 extdgfialglem2 33696 algextdeglem4 33723 algextdeglem5 33724 rtelextdg2lem 33729 fsumcnsrcl 43178 cnsrplycl 43179 rngunsnply 43181 |
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