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Mirrors > Home > MPE Home > Th. List > pgp0 | Structured version Visualization version GIF version |
Description: The identity subgroup is a 𝑃-group for every prime 𝑃. (Contributed by Mario Carneiro, 19-Jan-2015.) |
Ref | Expression |
---|---|
pgp0.1 | ⊢ 0 = (0g‘𝐺) |
Ref | Expression |
---|---|
pgp0 | ⊢ ((𝐺 ∈ Grp ∧ 𝑃 ∈ ℙ) → 𝑃 pGrp (𝐺 ↾s { 0 })) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | prmnn 15760 | . . . . . 6 ⊢ (𝑃 ∈ ℙ → 𝑃 ∈ ℕ) | |
2 | 1 | adantl 475 | . . . . 5 ⊢ ((𝐺 ∈ Grp ∧ 𝑃 ∈ ℙ) → 𝑃 ∈ ℕ) |
3 | 2 | nncnd 11368 | . . . 4 ⊢ ((𝐺 ∈ Grp ∧ 𝑃 ∈ ℙ) → 𝑃 ∈ ℂ) |
4 | 3 | exp0d 13296 | . . 3 ⊢ ((𝐺 ∈ Grp ∧ 𝑃 ∈ ℙ) → (𝑃↑0) = 1) |
5 | pgp0.1 | . . . . . 6 ⊢ 0 = (0g‘𝐺) | |
6 | 5 | fvexi 6447 | . . . . 5 ⊢ 0 ∈ V |
7 | hashsng 13449 | . . . . 5 ⊢ ( 0 ∈ V → (♯‘{ 0 }) = 1) | |
8 | 6, 7 | ax-mp 5 | . . . 4 ⊢ (♯‘{ 0 }) = 1 |
9 | 5 | 0subg 17970 | . . . . . . 7 ⊢ (𝐺 ∈ Grp → { 0 } ∈ (SubGrp‘𝐺)) |
10 | 9 | adantr 474 | . . . . . 6 ⊢ ((𝐺 ∈ Grp ∧ 𝑃 ∈ ℙ) → { 0 } ∈ (SubGrp‘𝐺)) |
11 | eqid 2825 | . . . . . . 7 ⊢ (𝐺 ↾s { 0 }) = (𝐺 ↾s { 0 }) | |
12 | 11 | subgbas 17949 | . . . . . 6 ⊢ ({ 0 } ∈ (SubGrp‘𝐺) → { 0 } = (Base‘(𝐺 ↾s { 0 }))) |
13 | 10, 12 | syl 17 | . . . . 5 ⊢ ((𝐺 ∈ Grp ∧ 𝑃 ∈ ℙ) → { 0 } = (Base‘(𝐺 ↾s { 0 }))) |
14 | 13 | fveq2d 6437 | . . . 4 ⊢ ((𝐺 ∈ Grp ∧ 𝑃 ∈ ℙ) → (♯‘{ 0 }) = (♯‘(Base‘(𝐺 ↾s { 0 })))) |
15 | 8, 14 | syl5eqr 2875 | . . 3 ⊢ ((𝐺 ∈ Grp ∧ 𝑃 ∈ ℙ) → 1 = (♯‘(Base‘(𝐺 ↾s { 0 })))) |
16 | 4, 15 | eqtr2d 2862 | . 2 ⊢ ((𝐺 ∈ Grp ∧ 𝑃 ∈ ℙ) → (♯‘(Base‘(𝐺 ↾s { 0 }))) = (𝑃↑0)) |
17 | 11 | subggrp 17948 | . . . 4 ⊢ ({ 0 } ∈ (SubGrp‘𝐺) → (𝐺 ↾s { 0 }) ∈ Grp) |
18 | 10, 17 | syl 17 | . . 3 ⊢ ((𝐺 ∈ Grp ∧ 𝑃 ∈ ℙ) → (𝐺 ↾s { 0 }) ∈ Grp) |
19 | simpr 479 | . . 3 ⊢ ((𝐺 ∈ Grp ∧ 𝑃 ∈ ℙ) → 𝑃 ∈ ℙ) | |
20 | 0nn0 11635 | . . . 4 ⊢ 0 ∈ ℕ0 | |
21 | 20 | a1i 11 | . . 3 ⊢ ((𝐺 ∈ Grp ∧ 𝑃 ∈ ℙ) → 0 ∈ ℕ0) |
22 | eqid 2825 | . . . 4 ⊢ (Base‘(𝐺 ↾s { 0 })) = (Base‘(𝐺 ↾s { 0 })) | |
23 | 22 | pgpfi1 18361 | . . 3 ⊢ (((𝐺 ↾s { 0 }) ∈ Grp ∧ 𝑃 ∈ ℙ ∧ 0 ∈ ℕ0) → ((♯‘(Base‘(𝐺 ↾s { 0 }))) = (𝑃↑0) → 𝑃 pGrp (𝐺 ↾s { 0 }))) |
24 | 18, 19, 21, 23 | syl3anc 1496 | . 2 ⊢ ((𝐺 ∈ Grp ∧ 𝑃 ∈ ℙ) → ((♯‘(Base‘(𝐺 ↾s { 0 }))) = (𝑃↑0) → 𝑃 pGrp (𝐺 ↾s { 0 }))) |
25 | 16, 24 | mpd 15 | 1 ⊢ ((𝐺 ∈ Grp ∧ 𝑃 ∈ ℙ) → 𝑃 pGrp (𝐺 ↾s { 0 })) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 386 = wceq 1658 ∈ wcel 2166 Vcvv 3414 {csn 4397 class class class wbr 4873 ‘cfv 6123 (class class class)co 6905 0cc0 10252 1c1 10253 ℕcn 11350 ℕ0cn0 11618 ↑cexp 13154 ♯chash 13410 ℙcprime 15757 Basecbs 16222 ↾s cress 16223 0gc0g 16453 Grpcgrp 17776 SubGrpcsubg 17939 pGrp cpgp 18297 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1896 ax-4 1910 ax-5 2011 ax-6 2077 ax-7 2114 ax-8 2168 ax-9 2175 ax-10 2194 ax-11 2209 ax-12 2222 ax-13 2391 ax-ext 2803 ax-rep 4994 ax-sep 5005 ax-nul 5013 ax-pow 5065 ax-pr 5127 ax-un 7209 ax-inf2 8815 ax-cnex 10308 ax-resscn 10309 ax-1cn 10310 ax-icn 10311 ax-addcl 10312 ax-addrcl 10313 ax-mulcl 10314 ax-mulrcl 10315 ax-mulcom 10316 ax-addass 10317 ax-mulass 10318 ax-distr 10319 ax-i2m1 10320 ax-1ne0 10321 ax-1rid 10322 ax-rnegex 10323 ax-rrecex 10324 ax-cnre 10325 ax-pre-lttri 10326 ax-pre-lttrn 10327 ax-pre-ltadd 10328 ax-pre-mulgt0 10329 ax-pre-sup 10330 |
This theorem depends on definitions: df-bi 199 df-an 387 df-or 881 df-3or 1114 df-3an 1115 df-tru 1662 df-fal 1672 df-ex 1881 df-nf 1885 df-sb 2070 df-mo 2605 df-eu 2640 df-clab 2812 df-cleq 2818 df-clel 2821 df-nfc 2958 df-ne 3000 df-nel 3103 df-ral 3122 df-rex 3123 df-reu 3124 df-rmo 3125 df-rab 3126 df-v 3416 df-sbc 3663 df-csb 3758 df-dif 3801 df-un 3803 df-in 3805 df-ss 3812 df-pss 3814 df-nul 4145 df-if 4307 df-pw 4380 df-sn 4398 df-pr 4400 df-tp 4402 df-op 4404 df-uni 4659 df-int 4698 df-iun 4742 df-disj 4842 df-br 4874 df-opab 4936 df-mpt 4953 df-tr 4976 df-id 5250 df-eprel 5255 df-po 5263 df-so 5264 df-fr 5301 df-se 5302 df-we 5303 df-xp 5348 df-rel 5349 df-cnv 5350 df-co 5351 df-dm 5352 df-rn 5353 df-res 5354 df-ima 5355 df-pred 5920 df-ord 5966 df-on 5967 df-lim 5968 df-suc 5969 df-iota 6086 df-fun 6125 df-fn 6126 df-f 6127 df-f1 6128 df-fo 6129 df-f1o 6130 df-fv 6131 df-isom 6132 df-riota 6866 df-ov 6908 df-oprab 6909 df-mpt2 6910 df-om 7327 df-1st 7428 df-2nd 7429 df-wrecs 7672 df-recs 7734 df-rdg 7772 df-1o 7826 df-2o 7827 df-oadd 7830 df-omul 7831 df-er 8009 df-ec 8011 df-qs 8015 df-map 8124 df-en 8223 df-dom 8224 df-sdom 8225 df-fin 8226 df-sup 8617 df-inf 8618 df-oi 8684 df-card 9078 df-acn 9081 df-pnf 10393 df-mnf 10394 df-xr 10395 df-ltxr 10396 df-le 10397 df-sub 10587 df-neg 10588 df-div 11010 df-nn 11351 df-2 11414 df-3 11415 df-n0 11619 df-z 11705 df-uz 11969 df-q 12072 df-rp 12113 df-fz 12620 df-fzo 12761 df-fl 12888 df-mod 12964 df-seq 13096 df-exp 13155 df-hash 13411 df-cj 14216 df-re 14217 df-im 14218 df-sqrt 14352 df-abs 14353 df-clim 14596 df-sum 14794 df-dvds 15358 df-gcd 15590 df-prm 15758 df-pc 15913 df-ndx 16225 df-slot 16226 df-base 16228 df-sets 16229 df-ress 16230 df-plusg 16318 df-0g 16455 df-mgm 17595 df-sgrp 17637 df-mnd 17648 df-grp 17779 df-minusg 17780 df-sbg 17781 df-mulg 17895 df-subg 17942 df-eqg 17944 df-od 18299 df-pgp 18301 |
This theorem is referenced by: slwn0 18381 |
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