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Mirrors > Home > MPE Home > Th. List > 2nsgsimpgd | Structured version Visualization version GIF version |
Description: If any normal subgroup of a nontrivial group is either the trivial subgroup or the whole group, the group is simple. (Contributed by Rohan Ridenour, 3-Aug-2023.) |
Ref | Expression |
---|---|
2nsgsimpgd.1 | ⊢ 𝐵 = (Base‘𝐺) |
2nsgsimpgd.2 | ⊢ 0 = (0g‘𝐺) |
2nsgsimpgd.3 | ⊢ (𝜑 → 𝐺 ∈ Grp) |
2nsgsimpgd.4 | ⊢ (𝜑 → ¬ { 0 } = 𝐵) |
2nsgsimpgd.5 | ⊢ ((𝜑 ∧ 𝑥 ∈ (NrmSGrp‘𝐺)) → (𝑥 = { 0 } ∨ 𝑥 = 𝐵)) |
Ref | Expression |
---|---|
2nsgsimpgd | ⊢ (𝜑 → 𝐺 ∈ SimpGrp) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 2nsgsimpgd.3 | . 2 ⊢ (𝜑 → 𝐺 ∈ Grp) | |
2 | 2nsgsimpgd.5 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ (NrmSGrp‘𝐺)) → (𝑥 = { 0 } ∨ 𝑥 = 𝐵)) | |
3 | elprg 4546 | . . . . . . 7 ⊢ (𝑥 ∈ (NrmSGrp‘𝐺) → (𝑥 ∈ {{ 0 }, 𝐵} ↔ (𝑥 = { 0 } ∨ 𝑥 = 𝐵))) | |
4 | 3 | adantl 485 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ (NrmSGrp‘𝐺)) → (𝑥 ∈ {{ 0 }, 𝐵} ↔ (𝑥 = { 0 } ∨ 𝑥 = 𝐵))) |
5 | 2, 4 | mpbird 260 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ (NrmSGrp‘𝐺)) → 𝑥 ∈ {{ 0 }, 𝐵}) |
6 | simpr 488 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 = { 0 }) → 𝑥 = { 0 }) | |
7 | 2nsgsimpgd.2 | . . . . . . . . . . 11 ⊢ 0 = (0g‘𝐺) | |
8 | 7 | 0nsg 18313 | . . . . . . . . . 10 ⊢ (𝐺 ∈ Grp → { 0 } ∈ (NrmSGrp‘𝐺)) |
9 | 1, 8 | syl 17 | . . . . . . . . 9 ⊢ (𝜑 → { 0 } ∈ (NrmSGrp‘𝐺)) |
10 | 9 | adantr 484 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 = { 0 }) → { 0 } ∈ (NrmSGrp‘𝐺)) |
11 | 6, 10 | eqeltrd 2890 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 = { 0 }) → 𝑥 ∈ (NrmSGrp‘𝐺)) |
12 | 11 | adantlr 714 | . . . . . 6 ⊢ (((𝜑 ∧ 𝑥 ∈ {{ 0 }, 𝐵}) ∧ 𝑥 = { 0 }) → 𝑥 ∈ (NrmSGrp‘𝐺)) |
13 | simpr 488 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 = 𝐵) → 𝑥 = 𝐵) | |
14 | 2nsgsimpgd.1 | . . . . . . . . . . 11 ⊢ 𝐵 = (Base‘𝐺) | |
15 | 14 | nsgid 18314 | . . . . . . . . . 10 ⊢ (𝐺 ∈ Grp → 𝐵 ∈ (NrmSGrp‘𝐺)) |
16 | 1, 15 | syl 17 | . . . . . . . . 9 ⊢ (𝜑 → 𝐵 ∈ (NrmSGrp‘𝐺)) |
17 | 16 | adantr 484 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 = 𝐵) → 𝐵 ∈ (NrmSGrp‘𝐺)) |
18 | 13, 17 | eqeltrd 2890 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 = 𝐵) → 𝑥 ∈ (NrmSGrp‘𝐺)) |
19 | 18 | adantlr 714 | . . . . . 6 ⊢ (((𝜑 ∧ 𝑥 ∈ {{ 0 }, 𝐵}) ∧ 𝑥 = 𝐵) → 𝑥 ∈ (NrmSGrp‘𝐺)) |
20 | elpri 4547 | . . . . . . 7 ⊢ (𝑥 ∈ {{ 0 }, 𝐵} → (𝑥 = { 0 } ∨ 𝑥 = 𝐵)) | |
21 | 20 | adantl 485 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ {{ 0 }, 𝐵}) → (𝑥 = { 0 } ∨ 𝑥 = 𝐵)) |
22 | 12, 19, 21 | mpjaodan 956 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ {{ 0 }, 𝐵}) → 𝑥 ∈ (NrmSGrp‘𝐺)) |
23 | 5, 22 | impbida 800 | . . . 4 ⊢ (𝜑 → (𝑥 ∈ (NrmSGrp‘𝐺) ↔ 𝑥 ∈ {{ 0 }, 𝐵})) |
24 | 23 | eqrdv 2796 | . . 3 ⊢ (𝜑 → (NrmSGrp‘𝐺) = {{ 0 }, 𝐵}) |
25 | snex 5297 | . . . . 5 ⊢ { 0 } ∈ V | |
26 | 25 | a1i 11 | . . . 4 ⊢ (𝜑 → { 0 } ∈ V) |
27 | 14 | fvexi 6659 | . . . . 5 ⊢ 𝐵 ∈ V |
28 | 27 | a1i 11 | . . . 4 ⊢ (𝜑 → 𝐵 ∈ V) |
29 | 2nsgsimpgd.4 | . . . 4 ⊢ (𝜑 → ¬ { 0 } = 𝐵) | |
30 | 26, 28, 29 | enpr2d 8580 | . . 3 ⊢ (𝜑 → {{ 0 }, 𝐵} ≈ 2o) |
31 | 24, 30 | eqbrtrd 5052 | . 2 ⊢ (𝜑 → (NrmSGrp‘𝐺) ≈ 2o) |
32 | 1, 31 | issimpgd 19208 | 1 ⊢ (𝜑 → 𝐺 ∈ SimpGrp) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ↔ wb 209 ∧ wa 399 ∨ wo 844 = wceq 1538 ∈ wcel 2111 Vcvv 3441 {csn 4525 {cpr 4527 ‘cfv 6324 2oc2o 8079 ≈ cen 8489 Basecbs 16475 0gc0g 16705 Grpcgrp 18095 NrmSGrpcnsg 18266 SimpGrpcsimpg 19205 |
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 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2770 ax-sep 5167 ax-nul 5174 ax-pow 5231 ax-pr 5295 ax-un 7441 ax-cnex 10582 ax-resscn 10583 ax-1cn 10584 ax-icn 10585 ax-addcl 10586 ax-addrcl 10587 ax-mulcl 10588 ax-mulrcl 10589 ax-mulcom 10590 ax-addass 10591 ax-mulass 10592 ax-distr 10593 ax-i2m1 10594 ax-1ne0 10595 ax-1rid 10596 ax-rnegex 10597 ax-rrecex 10598 ax-cnre 10599 ax-pre-lttri 10600 ax-pre-lttrn 10601 ax-pre-ltadd 10602 ax-pre-mulgt0 10603 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3or 1085 df-3an 1086 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2598 df-eu 2629 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-ne 2988 df-nel 3092 df-ral 3111 df-rex 3112 df-reu 3113 df-rmo 3114 df-rab 3115 df-v 3443 df-sbc 3721 df-csb 3829 df-dif 3884 df-un 3886 df-in 3888 df-ss 3898 df-pss 3900 df-nul 4244 df-if 4426 df-pw 4499 df-sn 4526 df-pr 4528 df-tp 4530 df-op 4532 df-uni 4801 df-iun 4883 df-br 5031 df-opab 5093 df-mpt 5111 df-tr 5137 df-id 5425 df-eprel 5430 df-po 5438 df-so 5439 df-fr 5478 df-we 5480 df-xp 5525 df-rel 5526 df-cnv 5527 df-co 5528 df-dm 5529 df-rn 5530 df-res 5531 df-ima 5532 df-pred 6116 df-ord 6162 df-on 6163 df-lim 6164 df-suc 6165 df-iota 6283 df-fun 6326 df-fn 6327 df-f 6328 df-f1 6329 df-fo 6330 df-f1o 6331 df-fv 6332 df-riota 7093 df-ov 7138 df-oprab 7139 df-mpo 7140 df-om 7561 df-1st 7671 df-2nd 7672 df-wrecs 7930 df-recs 7991 df-rdg 8029 df-1o 8085 df-2o 8086 df-er 8272 df-en 8493 df-dom 8494 df-sdom 8495 df-pnf 10666 df-mnf 10667 df-xr 10668 df-ltxr 10669 df-le 10670 df-sub 10861 df-neg 10862 df-nn 11626 df-2 11688 df-ndx 16478 df-slot 16479 df-base 16481 df-sets 16482 df-ress 16483 df-plusg 16570 df-0g 16707 df-mgm 17844 df-sgrp 17893 df-mnd 17904 df-grp 18098 df-minusg 18099 df-sbg 18100 df-subg 18268 df-nsg 18269 df-simpg 19206 |
This theorem is referenced by: simpgnsgbid 19218 prmgrpsimpgd 19229 |
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