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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 2762 | . . . 4 ⊢ (𝐺 ↾s 𝑆) = (𝐺 ↾s 𝑆) | |
| 2 | 1 | subggrp 19201 | . . 3 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → (𝐺 ↾s 𝑆) ∈ Grp) |
| 3 | eqid 2762 | . . . 4 ⊢ (Base‘(𝐺 ↾s 𝑆)) = (Base‘(𝐺 ↾s 𝑆)) | |
| 4 | eqid 2762 | . . . 4 ⊢ (0g‘(𝐺 ↾s 𝑆)) = (0g‘(𝐺 ↾s 𝑆)) | |
| 5 | 3, 4 | grpidcl 19038 | . . 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 19204 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 0 = (0g‘(𝐺 ↾s 𝑆))) |
| 9 | 1 | subgbas 19202 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝑆 = (Base‘(𝐺 ↾s 𝑆))) |
| 10 | 6, 8, 9 | 3eltr4d 2877 | 1 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 0 ∈ 𝑆) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1569 ∈ wcel 2142 ‘cfv 6536 (class class class)co 7412 Basecbs 17275 ↾s cress 17296 0gc0g 17498 Grpcgrp 19006 SubGrpcsubg 19192 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1824 ax-4 1838 ax-5 1939 ax-6 1996 ax-7 2037 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-sep 5256 ax-nul 5268 ax-pow 5335 ax-pr 5403 ax-un 7734 ax-cnex 11162 ax-resscn 11163 ax-1cn 11164 ax-icn 11165 ax-addcl 11166 ax-addrcl 11167 ax-mulcl 11168 ax-mulrcl 11169 ax-mulcom 11170 ax-addass 11171 ax-mulass 11172 ax-distr 11173 ax-i2m1 11174 ax-1ne0 11175 ax-1rid 11176 ax-rnegex 11177 ax-rrecex 11178 ax-cnre 11179 ax-pre-lttri 11180 ax-pre-lttrn 11181 ax-pre-ltadd 11182 ax-pre-mulgt0 11183 |
| This proof depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1103 df-3an 1104 df-tru 1572 df-fal 1582 df-ex 1809 df-nf 1813 df-sb 2096 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3064 df-ral 3079 df-rex 3089 df-rmo 3368 df-reu 3369 df-rab 3416 df-v 3456 df-sbc 3744 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4487 df-pw 4563 df-sn 4589 df-pr 4591 df-op 4595 df-uni 4872 df-iun 4957 df-br 5109 df-opab 5173 df-mpt 5192 df-tr 5218 df-id 5555 df-eprel 5560 df-po 5568 df-so 5569 df-fr 5613 df-we 5615 df-xp 5666 df-rel 5667 df-cnv 5668 df-co 5669 df-dm 5670 df-rn 5671 df-res 5672 df-ima 5673 df-pred 6302 df-ord 6363 df-on 6364 df-lim 6365 df-suc 6366 df-iota 6492 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-riota 7369 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7861 df-2nd 7985 df-frecs 8276 df-wrecs 8307 df-recs 8356 df-rdg 8395 df-er 8692 df-en 8942 df-dom 8943 df-sdom 8944 df-pnf 11251 df-mnf 11252 df-xr 11253 df-ltxr 11254 df-le 11255 df-sub 11449 df-neg 11450 df-nn 12240 df-2 12309 df-sets 17230 df-slot 17248 df-ndx 17260 df-base 17276 df-ress 17297 df-plusg 17329 df-0g 17500 df-mgm 18704 df-sgrp 18783 df-mnd 18799 df-grp 19009 df-subg 19195 |
| This theorem is used by: subgmulgcl 19212 issubg3 19217 issubg4 19218 subgint 19223 trivsubgd 19225 eqger 19252 ghmpreima 19314 subgga 19376 gasubg 19378 sylow1lem5 19678 sylow2blem2 19697 sylow2blem3 19698 fislw 19701 sylow3lem3 19705 sylow3lem4 19706 lsm01 19747 lsm02 19748 lsmdisj 19757 lsmdisj2 19758 pj1lid 19777 pj1rid 19778 dmdprdd 20077 dprdfid 20095 dprdfeq0 20100 dprdsubg 20102 dprdres 20106 dprdz 20108 dprdsn 20114 dmdprdsplitlem 20115 dprddisj2 20117 dprd2da 20120 dmdprdsplit2lem 20123 ablfacrp 20144 ablfacrp2 20145 ablfac1c 20149 ablfac1eu 20151 pgpfac1lem3a 20154 pgpfac1lem3 20155 pgpfac1lem5 20157 pgpfaclem2 20160 pgpfaclem3 20161 prmgrpsimpgd 20192 primefld0cl 20920 abvres 20945 islss4 21094 dflidl2rng 21354 rnglidlrng 21392 rng2idl0 21417 rng2idlsubg0 21420 2idlcpblrng 21421 rng2idl1cntr 21456 subrgpsr 22138 mpllsslem 22160 0elcpmat 22890 opnsubg 24276 clssubg 24277 tgpconncompss 24282 plypf1 26380 dvply2g 26457 efsubm 26727 dchrptlem3 27441 gsumsubg 33375 elrgspnlem4 33574 subrdom 33614 nsgqus0 33728 nsgqusf1olem1 33731 ressply1evls1 33864 ressply10g 33866 ressply1invg 33868 vr1nz 33892 drgext0gsca 33991 fedgmullem2 34029 fldextrspunlsplem 34072 fldextrspunlsp 34073 extdgfialglem1 34091 extdgfialglem2 34092 algextdeglem4 34119 algextdeglem5 34120 rtelextdg2lem 34125 fsumcnsrcl 43921 cnsrplycl 43922 rngunsnply 43924 |
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