![]() |
Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
|
Mirrors > Home > MPE Home > Th. List > simpgnsgd | Structured version Visualization version GIF version |
Description: The only normal subgroups of a simple group are the group itself and the trivial group. (Contributed by Rohan Ridenour, 3-Aug-2023.) |
Ref | Expression |
---|---|
simpgnsgd.1 | ⊢ 𝐵 = (Base‘𝐺) |
simpgnsgd.2 | ⊢ 0 = (0g‘𝐺) |
simpgnsgd.3 | ⊢ (𝜑 → 𝐺 ∈ SimpGrp) |
Ref | Expression |
---|---|
simpgnsgd | ⊢ (𝜑 → (NrmSGrp‘𝐺) = {{ 0 }, 𝐵}) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 2onn 8580 | . . . . 5 ⊢ 2o ∈ ω | |
2 | 1 | a1i 11 | . . . 4 ⊢ (𝜑 → 2o ∈ ω) |
3 | nnfi 9069 | . . . 4 ⊢ (2o ∈ ω → 2o ∈ Fin) | |
4 | 2, 3 | syl 17 | . . 3 ⊢ (𝜑 → 2o ∈ Fin) |
5 | simpgnsgd.3 | . . . 4 ⊢ (𝜑 → 𝐺 ∈ SimpGrp) | |
6 | simpg2nsg 19834 | . . . 4 ⊢ (𝐺 ∈ SimpGrp → (NrmSGrp‘𝐺) ≈ 2o) | |
7 | 5, 6 | syl 17 | . . 3 ⊢ (𝜑 → (NrmSGrp‘𝐺) ≈ 2o) |
8 | enfii 9091 | . . 3 ⊢ ((2o ∈ Fin ∧ (NrmSGrp‘𝐺) ≈ 2o) → (NrmSGrp‘𝐺) ∈ Fin) | |
9 | 4, 7, 8 | syl2anc 584 | . 2 ⊢ (𝜑 → (NrmSGrp‘𝐺) ∈ Fin) |
10 | simpgnsgd.1 | . . 3 ⊢ 𝐵 = (Base‘𝐺) | |
11 | simpgnsgd.2 | . . 3 ⊢ 0 = (0g‘𝐺) | |
12 | 5 | simpggrpd 19833 | . . 3 ⊢ (𝜑 → 𝐺 ∈ Grp) |
13 | 10, 11, 12 | 0idnsgd 18932 | . 2 ⊢ (𝜑 → {{ 0 }, 𝐵} ⊆ (NrmSGrp‘𝐺)) |
14 | snex 5386 | . . . . . 6 ⊢ { 0 } ∈ V | |
15 | 14 | a1i 11 | . . . . 5 ⊢ (𝜑 → { 0 } ∈ V) |
16 | 10 | a1i 11 | . . . . . 6 ⊢ (𝜑 → 𝐵 = (Base‘𝐺)) |
17 | fvex 6852 | . . . . . 6 ⊢ (Base‘𝐺) ∈ V | |
18 | 16, 17 | eqeltrdi 2846 | . . . . 5 ⊢ (𝜑 → 𝐵 ∈ V) |
19 | 10, 11, 5 | simpgntrivd 19836 | . . . . . 6 ⊢ (𝜑 → ¬ 𝐵 = { 0 }) |
20 | 19 | neqcomd 2747 | . . . . 5 ⊢ (𝜑 → ¬ { 0 } = 𝐵) |
21 | 15, 18, 20 | enpr2d 8951 | . . . 4 ⊢ (𝜑 → {{ 0 }, 𝐵} ≈ 2o) |
22 | 21 | ensymd 8903 | . . 3 ⊢ (𝜑 → 2o ≈ {{ 0 }, 𝐵}) |
23 | entr 8904 | . . 3 ⊢ (((NrmSGrp‘𝐺) ≈ 2o ∧ 2o ≈ {{ 0 }, 𝐵}) → (NrmSGrp‘𝐺) ≈ {{ 0 }, 𝐵}) | |
24 | 7, 22, 23 | syl2anc 584 | . 2 ⊢ (𝜑 → (NrmSGrp‘𝐺) ≈ {{ 0 }, 𝐵}) |
25 | 9, 13, 24 | phpeqd 9117 | 1 ⊢ (𝜑 → (NrmSGrp‘𝐺) = {{ 0 }, 𝐵}) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1541 ∈ wcel 2106 Vcvv 3443 {csn 4584 {cpr 4586 class class class wbr 5103 ‘cfv 6493 ωcom 7794 2oc2o 8398 ≈ cen 8838 Fincfn 8841 Basecbs 17043 0gc0g 17281 NrmSGrpcnsg 18882 SimpGrpcsimpg 19828 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2708 ax-sep 5254 ax-nul 5261 ax-pow 5318 ax-pr 5382 ax-un 7664 ax-cnex 11065 ax-resscn 11066 ax-1cn 11067 ax-icn 11068 ax-addcl 11069 ax-addrcl 11070 ax-mulcl 11071 ax-mulrcl 11072 ax-mulcom 11073 ax-addass 11074 ax-mulass 11075 ax-distr 11076 ax-i2m1 11077 ax-1ne0 11078 ax-1rid 11079 ax-rnegex 11080 ax-rrecex 11081 ax-cnre 11082 ax-pre-lttri 11083 ax-pre-lttrn 11084 ax-pre-ltadd 11085 ax-pre-mulgt0 11086 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3or 1088 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2539 df-eu 2568 df-clab 2715 df-cleq 2729 df-clel 2815 df-nfc 2887 df-ne 2942 df-nel 3048 df-ral 3063 df-rex 3072 df-rmo 3351 df-reu 3352 df-rab 3406 df-v 3445 df-sbc 3738 df-csb 3854 df-dif 3911 df-un 3913 df-in 3915 df-ss 3925 df-pss 3927 df-nul 4281 df-if 4485 df-pw 4560 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4864 df-iun 4954 df-br 5104 df-opab 5166 df-mpt 5187 df-tr 5221 df-id 5529 df-eprel 5535 df-po 5543 df-so 5544 df-fr 5586 df-we 5588 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-pred 6251 df-ord 6318 df-on 6319 df-lim 6320 df-suc 6321 df-iota 6445 df-fun 6495 df-fn 6496 df-f 6497 df-f1 6498 df-fo 6499 df-f1o 6500 df-fv 6501 df-riota 7307 df-ov 7354 df-oprab 7355 df-mpo 7356 df-om 7795 df-1st 7913 df-2nd 7914 df-frecs 8204 df-wrecs 8235 df-recs 8309 df-rdg 8348 df-1o 8404 df-2o 8405 df-er 8606 df-en 8842 df-dom 8843 df-sdom 8844 df-fin 8845 df-pnf 11149 df-mnf 11150 df-xr 11151 df-ltxr 11152 df-le 11153 df-sub 11345 df-neg 11346 df-nn 12112 df-2 12174 df-sets 16996 df-slot 17014 df-ndx 17026 df-base 17044 df-ress 17073 df-plusg 17106 df-0g 17283 df-mgm 18457 df-sgrp 18506 df-mnd 18517 df-submnd 18562 df-grp 18711 df-minusg 18712 df-sbg 18713 df-subg 18884 df-nsg 18885 df-simpg 19829 |
This theorem is referenced by: simpgnsgeqd 19839 simpgnsgbid 19841 |
Copyright terms: Public domain | W3C validator |