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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 16636 | . . . . . 6 ⊢ (𝑃 ∈ ℙ → 𝑃 ∈ ℕ) | |
2 | 1 | adantl 481 | . . . . 5 ⊢ ((𝐺 ∈ Grp ∧ 𝑃 ∈ ℙ) → 𝑃 ∈ ℕ) |
3 | 2 | nncnd 12250 | . . . 4 ⊢ ((𝐺 ∈ Grp ∧ 𝑃 ∈ ℙ) → 𝑃 ∈ ℂ) |
4 | 3 | exp0d 14128 | . . 3 ⊢ ((𝐺 ∈ Grp ∧ 𝑃 ∈ ℙ) → (𝑃↑0) = 1) |
5 | pgp0.1 | . . . . . 6 ⊢ 0 = (0g‘𝐺) | |
6 | 5 | fvexi 6905 | . . . . 5 ⊢ 0 ∈ V |
7 | hashsng 14352 | . . . . 5 ⊢ ( 0 ∈ V → (♯‘{ 0 }) = 1) | |
8 | 6, 7 | ax-mp 5 | . . . 4 ⊢ (♯‘{ 0 }) = 1 |
9 | 5 | 0subg 19097 | . . . . . . 7 ⊢ (𝐺 ∈ Grp → { 0 } ∈ (SubGrp‘𝐺)) |
10 | 9 | adantr 480 | . . . . . 6 ⊢ ((𝐺 ∈ Grp ∧ 𝑃 ∈ ℙ) → { 0 } ∈ (SubGrp‘𝐺)) |
11 | eqid 2727 | . . . . . . 7 ⊢ (𝐺 ↾s { 0 }) = (𝐺 ↾s { 0 }) | |
12 | 11 | subgbas 19076 | . . . . . 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 6895 | . . . 4 ⊢ ((𝐺 ∈ Grp ∧ 𝑃 ∈ ℙ) → (♯‘{ 0 }) = (♯‘(Base‘(𝐺 ↾s { 0 })))) |
15 | 8, 14 | eqtr3id 2781 | . . 3 ⊢ ((𝐺 ∈ Grp ∧ 𝑃 ∈ ℙ) → 1 = (♯‘(Base‘(𝐺 ↾s { 0 })))) |
16 | 4, 15 | eqtr2d 2768 | . 2 ⊢ ((𝐺 ∈ Grp ∧ 𝑃 ∈ ℙ) → (♯‘(Base‘(𝐺 ↾s { 0 }))) = (𝑃↑0)) |
17 | 11 | subggrp 19075 | . . . 4 ⊢ ({ 0 } ∈ (SubGrp‘𝐺) → (𝐺 ↾s { 0 }) ∈ Grp) |
18 | 10, 17 | syl 17 | . . 3 ⊢ ((𝐺 ∈ Grp ∧ 𝑃 ∈ ℙ) → (𝐺 ↾s { 0 }) ∈ Grp) |
19 | simpr 484 | . . 3 ⊢ ((𝐺 ∈ Grp ∧ 𝑃 ∈ ℙ) → 𝑃 ∈ ℙ) | |
20 | 0nn0 12509 | . . . 4 ⊢ 0 ∈ ℕ0 | |
21 | 20 | a1i 11 | . . 3 ⊢ ((𝐺 ∈ Grp ∧ 𝑃 ∈ ℙ) → 0 ∈ ℕ0) |
22 | eqid 2727 | . . . 4 ⊢ (Base‘(𝐺 ↾s { 0 })) = (Base‘(𝐺 ↾s { 0 })) | |
23 | 22 | pgpfi1 19541 | . . 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 1369 | . 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 395 = wceq 1534 ∈ wcel 2099 Vcvv 3469 {csn 4624 class class class wbr 5142 ‘cfv 6542 (class class class)co 7414 0cc0 11130 1c1 11131 ℕcn 12234 ℕ0cn0 12494 ↑cexp 14050 ♯chash 14313 ℙcprime 16633 Basecbs 17171 ↾s cress 17200 0gc0g 17412 Grpcgrp 18881 SubGrpcsubg 19066 pGrp cpgp 19472 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1790 ax-4 1804 ax-5 1906 ax-6 1964 ax-7 2004 ax-8 2101 ax-9 2109 ax-10 2130 ax-11 2147 ax-12 2164 ax-ext 2698 ax-rep 5279 ax-sep 5293 ax-nul 5300 ax-pow 5359 ax-pr 5423 ax-un 7734 ax-inf2 9656 ax-cnex 11186 ax-resscn 11187 ax-1cn 11188 ax-icn 11189 ax-addcl 11190 ax-addrcl 11191 ax-mulcl 11192 ax-mulrcl 11193 ax-mulcom 11194 ax-addass 11195 ax-mulass 11196 ax-distr 11197 ax-i2m1 11198 ax-1ne0 11199 ax-1rid 11200 ax-rnegex 11201 ax-rrecex 11202 ax-cnre 11203 ax-pre-lttri 11204 ax-pre-lttrn 11205 ax-pre-ltadd 11206 ax-pre-mulgt0 11207 ax-pre-sup 11208 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 847 df-3or 1086 df-3an 1087 df-tru 1537 df-fal 1547 df-ex 1775 df-nf 1779 df-sb 2061 df-mo 2529 df-eu 2558 df-clab 2705 df-cleq 2719 df-clel 2805 df-nfc 2880 df-ne 2936 df-nel 3042 df-ral 3057 df-rex 3066 df-rmo 3371 df-reu 3372 df-rab 3428 df-v 3471 df-sbc 3775 df-csb 3890 df-dif 3947 df-un 3949 df-in 3951 df-ss 3961 df-pss 3963 df-nul 4319 df-if 4525 df-pw 4600 df-sn 4625 df-pr 4627 df-op 4631 df-uni 4904 df-int 4945 df-iun 4993 df-disj 5108 df-br 5143 df-opab 5205 df-mpt 5226 df-tr 5260 df-id 5570 df-eprel 5576 df-po 5584 df-so 5585 df-fr 5627 df-se 5628 df-we 5629 df-xp 5678 df-rel 5679 df-cnv 5680 df-co 5681 df-dm 5682 df-rn 5683 df-res 5684 df-ima 5685 df-pred 6299 df-ord 6366 df-on 6367 df-lim 6368 df-suc 6369 df-iota 6494 df-fun 6544 df-fn 6545 df-f 6546 df-f1 6547 df-fo 6548 df-f1o 6549 df-fv 6550 df-isom 6551 df-riota 7370 df-ov 7417 df-oprab 7418 df-mpo 7419 df-om 7865 df-1st 7987 df-2nd 7988 df-frecs 8280 df-wrecs 8311 df-recs 8385 df-rdg 8424 df-1o 8480 df-2o 8481 df-oadd 8484 df-omul 8485 df-er 8718 df-ec 8720 df-qs 8724 df-map 8838 df-en 8956 df-dom 8957 df-sdom 8958 df-fin 8959 df-sup 9457 df-inf 9458 df-oi 9525 df-card 9954 df-acn 9957 df-pnf 11272 df-mnf 11273 df-xr 11274 df-ltxr 11275 df-le 11276 df-sub 11468 df-neg 11469 df-div 11894 df-nn 12235 df-2 12297 df-3 12298 df-n0 12495 df-z 12581 df-uz 12845 df-q 12955 df-rp 12999 df-fz 13509 df-fzo 13652 df-fl 13781 df-mod 13859 df-seq 13991 df-exp 14051 df-hash 14314 df-cj 15070 df-re 15071 df-im 15072 df-sqrt 15206 df-abs 15207 df-clim 15456 df-sum 15657 df-dvds 16223 df-gcd 16461 df-prm 16634 df-pc 16797 df-sets 17124 df-slot 17142 df-ndx 17154 df-base 17172 df-ress 17201 df-plusg 17237 df-0g 17414 df-mgm 18591 df-sgrp 18670 df-mnd 18686 df-submnd 18732 df-grp 18884 df-minusg 18885 df-sbg 18886 df-mulg 19015 df-subg 19069 df-eqg 19071 df-od 19474 df-pgp 19476 |
This theorem is referenced by: slwn0 19561 |
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