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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 19368 | . . 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 19205 | . . 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 19371 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 0 = (0g‘(𝐺 ↾s 𝑆))) |
| 9 | 1 | subgbas 19369 | . 2 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 𝑆 = (Base‘(𝐺 ↾s 𝑆))) |
| 10 | 6, 8, 9 | 3eltr4d 2879 | 1 ⊢ (𝑆 ∈ (SubGrp‘𝐺) → 0 ∈ 𝑆) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 ∈ wcel 2147 ‘cfv 6558 (class class class)co 7443 Basecbs 17416 ↾s cress 17437 0gc0g 17639 Grpcgrp 19173 SubGrpcsubg 19359 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5252 ax-nul 5263 ax-pow 5331 ax-pr 5395 ax-un 7775 ax-cnex 11283 ax-resscn 11284 ax-1cn 11285 ax-icn 11286 ax-addcl 11287 ax-addrcl 11288 ax-mulcl 11289 ax-mulrcl 11290 ax-mulcom 11291 ax-addass 11292 ax-mulass 11293 ax-distr 11294 ax-i2m1 11295 ax-1ne0 11296 ax-1rid 11297 ax-rnegex 11298 ax-rrecex 11299 ax-cnre 11300 ax-pre-lttri 11301 ax-pre-lttrn 11302 ax-pre-ltadd 11303 ax-pre-mulgt0 11304 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-iun 4956 df-br 5107 df-opab 5171 df-mpt 5190 df-tr 5216 df-id 5550 df-eprel 5555 df-po 5563 df-so 5564 df-fr 5608 df-we 5610 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-pred 6322 df-ord 6383 df-on 6384 df-lim 6385 df-suc 6386 df-iota 6512 df-fun 6560 df-fn 6561 df-f 6562 df-f1 6563 df-fo 6564 df-f1o 6565 df-fv 6566 df-riota 7400 df-ov 7446 df-oprab 7447 df-mpo 7448 df-om 7902 df-2nd 8026 df-frecs 8327 df-wrecs 8358 df-recs 8407 df-rdg 8446 df-er 8745 df-en 9002 df-dom 9003 df-sdom 9004 df-pnf 11372 df-mnf 11373 df-xr 11374 df-ltxr 11375 df-le 11376 df-sub 11570 df-neg 11571 df-nn 12363 df-2 12432 df-sets 17371 df-slot 17389 df-ndx 17401 df-base 17417 df-ress 17438 df-plusg 17470 df-0g 17641 df-mgm 18845 df-sgrp 18937 df-mnd 18953 df-grp 19176 df-subg 19362 |
| This theorem is used by: subgmulgcl 19379 issubg3 19384 issubg4 19385 subgint 19390 trivsubgd 19392 eqger 19419 ghmpreima 19481 subgga 19544 gasubg 19546 sylow1lem5 19846 sylow2blem2 19865 sylow2blem3 19866 fislw 19869 sylow3lem3 19873 sylow3lem4 19874 lsm01 19915 lsm02 19916 lsmdisj 19925 lsmdisj2 19926 pj1lid 19945 pj1rid 19946 dmdprdd 20245 dprdfid 20263 dprdfeq0 20268 dprdsubg 20270 dprdres 20274 dprdz 20276 dprdsn 20282 dmdprdsplitlem 20283 dprddisj2 20285 dprd2da 20288 dmdprdsplit2lem 20291 ablfacrp 20312 ablfacrp2 20313 ablfac1c 20317 ablfac1eu 20319 pgpfac1lem3a 20322 pgpfac1lem3 20323 pgpfac1lem5 20325 pgpfaclem2 20328 pgpfaclem3 20329 prmgrpsimpgd 20360 primefld0cl 21093 abvres 21118 islss4 21267 dflidl2rng 21527 rnglidlrng 21565 rng2idl0 21591 rng2idlsubg0 21594 2idlcpblrng 21595 rng2idl1cntr 21631 subrgpsr 22315 mpllsslem 22337 0elcpmat 23070 opnsubg 24457 clssubg 24458 tgpconncompss 24463 plypf1 26561 dvply2g 26636 efsubm 26909 dchrptlem3 27623 gsumsubg 33677 elrgspnlem4 33876 subrdom 33916 nsgqus0 34031 nsgqusf1olem1 34034 ressply1evls1 34167 ressply10g 34169 ressply1invg 34171 vr1nz 34195 drgext0gsca 34294 fedgmullem2 34332 fldextrspunlsplem 34375 fldextrspunlsp 34376 extdgfialglem1 34394 extdgfialglem2 34395 algextdeglem4 34422 algextdeglem5 34423 rtelextdg2lem 34428 fsumcnsrcl 44360 cnsrplycl 44361 rngunsnply 44363 |
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