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| Mirrors > Home > MPE Home > Th. List > sylow3 | Structured version Visualization version GIF version | ||
| Description: Sylow's third theorem. The number of Sylow subgroups is a divisor of ∣ 𝐺 ∣ / 𝑑, where 𝑑 is the common order of a Sylow subgroup, and is equivalent to 1 mod 𝑃. This is part of Metamath 100 proof #72. (Contributed by Mario Carneiro, 19-Jan-2015.) |
| Ref | Expression |
|---|---|
| sylow3.x | ⊢ 𝑋 = (Base‘𝐺) |
| sylow3.g | ⊢ (𝜑 → 𝐺 ∈ Grp) |
| sylow3.xf | ⊢ (𝜑 → 𝑋 ∈ Fin) |
| sylow3.p | ⊢ (𝜑 → 𝑃 ∈ ℙ) |
| sylow3.n | ⊢ 𝑁 = (♯‘(𝑃 pSyl 𝐺)) |
| Ref | Expression |
|---|---|
| sylow3 | ⊢ (𝜑 → (𝑁 ∥ ((♯‘𝑋) / (𝑃↑(𝑃 pCnt (♯‘𝑋)))) ∧ (𝑁 mod 𝑃) = 1)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sylow3.g | . . . 4 ⊢ (𝜑 → 𝐺 ∈ Grp) | |
| 2 | sylow3.xf | . . . 4 ⊢ (𝜑 → 𝑋 ∈ Fin) | |
| 3 | sylow3.p | . . . 4 ⊢ (𝜑 → 𝑃 ∈ ℙ) | |
| 4 | sylow3.x | . . . . 5 ⊢ 𝑋 = (Base‘𝐺) | |
| 5 | 4 | slwn0 19710 | . . . 4 ⊢ ((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) → (𝑃 pSyl 𝐺) ≠ ∅) |
| 6 | 1, 2, 3, 5 | syl3anc 1398 | . . 3 ⊢ (𝜑 → (𝑃 pSyl 𝐺) ≠ ∅) |
| 7 | n0 4310 | . . 3 ⊢ ((𝑃 pSyl 𝐺) ≠ ∅ ↔ ∃𝑘 𝑘 ∈ (𝑃 pSyl 𝐺)) | |
| 8 | 6, 7 | sylib 221 | . 2 ⊢ (𝜑 → ∃𝑘 𝑘 ∈ (𝑃 pSyl 𝐺)) |
| 9 | sylow3.n | . . . 4 ⊢ 𝑁 = (♯‘(𝑃 pSyl 𝐺)) | |
| 10 | 1 | adantr 486 | . . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝑃 pSyl 𝐺)) → 𝐺 ∈ Grp) |
| 11 | 2 | adantr 486 | . . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝑃 pSyl 𝐺)) → 𝑋 ∈ Fin) |
| 12 | 3 | adantr 486 | . . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝑃 pSyl 𝐺)) → 𝑃 ∈ ℙ) |
| 13 | eqid 2766 | . . . . 5 ⊢ (+g‘𝐺) = (+g‘𝐺) | |
| 14 | eqid 2766 | . . . . 5 ⊢ (-g‘𝐺) = (-g‘𝐺) | |
| 15 | oveq2 7431 | . . . . . . . . . 10 ⊢ (𝑐 = 𝑧 → (𝑎(+g‘𝐺)𝑐) = (𝑎(+g‘𝐺)𝑧)) | |
| 16 | 15 | oveq1d 7438 | . . . . . . . . 9 ⊢ (𝑐 = 𝑧 → ((𝑎(+g‘𝐺)𝑐)(-g‘𝐺)𝑎) = ((𝑎(+g‘𝐺)𝑧)(-g‘𝐺)𝑎)) |
| 17 | 16 | cbvmptv 5220 | . . . . . . . 8 ⊢ (𝑐 ∈ 𝑏 ↦ ((𝑎(+g‘𝐺)𝑐)(-g‘𝐺)𝑎)) = (𝑧 ∈ 𝑏 ↦ ((𝑎(+g‘𝐺)𝑧)(-g‘𝐺)𝑎)) |
| 18 | oveq1 7430 | . . . . . . . . . 10 ⊢ (𝑎 = 𝑥 → (𝑎(+g‘𝐺)𝑧) = (𝑥(+g‘𝐺)𝑧)) | |
| 19 | id 23 | . . . . . . . . . 10 ⊢ (𝑎 = 𝑥 → 𝑎 = 𝑥) | |
| 20 | 18, 19 | oveq12d 7441 | . . . . . . . . 9 ⊢ (𝑎 = 𝑥 → ((𝑎(+g‘𝐺)𝑧)(-g‘𝐺)𝑎) = ((𝑥(+g‘𝐺)𝑧)(-g‘𝐺)𝑥)) |
| 21 | 20 | mpteq2dv 5210 | . . . . . . . 8 ⊢ (𝑎 = 𝑥 → (𝑧 ∈ 𝑏 ↦ ((𝑎(+g‘𝐺)𝑧)(-g‘𝐺)𝑎)) = (𝑧 ∈ 𝑏 ↦ ((𝑥(+g‘𝐺)𝑧)(-g‘𝐺)𝑥))) |
| 22 | 17, 21 | eqtrid 2813 | . . . . . . 7 ⊢ (𝑎 = 𝑥 → (𝑐 ∈ 𝑏 ↦ ((𝑎(+g‘𝐺)𝑐)(-g‘𝐺)𝑎)) = (𝑧 ∈ 𝑏 ↦ ((𝑥(+g‘𝐺)𝑧)(-g‘𝐺)𝑥))) |
| 23 | 22 | rneqd 5933 | . . . . . 6 ⊢ (𝑎 = 𝑥 → ran (𝑐 ∈ 𝑏 ↦ ((𝑎(+g‘𝐺)𝑐)(-g‘𝐺)𝑎)) = ran (𝑧 ∈ 𝑏 ↦ ((𝑥(+g‘𝐺)𝑧)(-g‘𝐺)𝑥))) |
| 24 | mpteq1 5205 | . . . . . . 7 ⊢ (𝑏 = 𝑦 → (𝑧 ∈ 𝑏 ↦ ((𝑥(+g‘𝐺)𝑧)(-g‘𝐺)𝑥)) = (𝑧 ∈ 𝑦 ↦ ((𝑥(+g‘𝐺)𝑧)(-g‘𝐺)𝑥))) | |
| 25 | 24 | rneqd 5933 | . . . . . 6 ⊢ (𝑏 = 𝑦 → ran (𝑧 ∈ 𝑏 ↦ ((𝑥(+g‘𝐺)𝑧)(-g‘𝐺)𝑥)) = ran (𝑧 ∈ 𝑦 ↦ ((𝑥(+g‘𝐺)𝑧)(-g‘𝐺)𝑥))) |
| 26 | 23, 25 | cbvmpov 7518 | . . . . 5 ⊢ (𝑎 ∈ 𝑋, 𝑏 ∈ (𝑃 pSyl 𝐺) ↦ ran (𝑐 ∈ 𝑏 ↦ ((𝑎(+g‘𝐺)𝑐)(-g‘𝐺)𝑎))) = (𝑥 ∈ 𝑋, 𝑦 ∈ (𝑃 pSyl 𝐺) ↦ ran (𝑧 ∈ 𝑦 ↦ ((𝑥(+g‘𝐺)𝑧)(-g‘𝐺)𝑥))) |
| 27 | simpr 490 | . . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝑃 pSyl 𝐺)) → 𝑘 ∈ (𝑃 pSyl 𝐺)) | |
| 28 | eqid 2766 | . . . . 5 ⊢ {𝑢 ∈ 𝑋 ∣ (𝑢(𝑎 ∈ 𝑋, 𝑏 ∈ (𝑃 pSyl 𝐺) ↦ ran (𝑐 ∈ 𝑏 ↦ ((𝑎(+g‘𝐺)𝑐)(-g‘𝐺)𝑎)))𝑘) = 𝑘} = {𝑢 ∈ 𝑋 ∣ (𝑢(𝑎 ∈ 𝑋, 𝑏 ∈ (𝑃 pSyl 𝐺) ↦ ran (𝑐 ∈ 𝑏 ↦ ((𝑎(+g‘𝐺)𝑐)(-g‘𝐺)𝑎)))𝑘) = 𝑘} | |
| 29 | eqid 2766 | . . . . 5 ⊢ {𝑥 ∈ 𝑋 ∣ ∀𝑦 ∈ 𝑋 ((𝑥(+g‘𝐺)𝑦) ∈ 𝑘 ↔ (𝑦(+g‘𝐺)𝑥) ∈ 𝑘)} = {𝑥 ∈ 𝑋 ∣ ∀𝑦 ∈ 𝑋 ((𝑥(+g‘𝐺)𝑦) ∈ 𝑘 ↔ (𝑦(+g‘𝐺)𝑥) ∈ 𝑘)} | |
| 30 | 4, 10, 11, 12, 13, 14, 26, 27, 28, 29 | sylow3lem4 19725 | . . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝑃 pSyl 𝐺)) → (♯‘(𝑃 pSyl 𝐺)) ∥ ((♯‘𝑋) / (𝑃↑(𝑃 pCnt (♯‘𝑋))))) |
| 31 | 9, 30 | eqbrtrid 5151 | . . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝑃 pSyl 𝐺)) → 𝑁 ∥ ((♯‘𝑋) / (𝑃↑(𝑃 pCnt (♯‘𝑋))))) |
| 32 | 9 | oveq1i 7433 | . . . 4 ⊢ (𝑁 mod 𝑃) = ((♯‘(𝑃 pSyl 𝐺)) mod 𝑃) |
| 33 | 23, 25 | cbvmpov 7518 | . . . . 5 ⊢ (𝑎 ∈ 𝑘, 𝑏 ∈ (𝑃 pSyl 𝐺) ↦ ran (𝑐 ∈ 𝑏 ↦ ((𝑎(+g‘𝐺)𝑐)(-g‘𝐺)𝑎))) = (𝑥 ∈ 𝑘, 𝑦 ∈ (𝑃 pSyl 𝐺) ↦ ran (𝑧 ∈ 𝑦 ↦ ((𝑥(+g‘𝐺)𝑧)(-g‘𝐺)𝑥))) |
| 34 | eqid 2766 | . . . . 5 ⊢ {𝑥 ∈ 𝑋 ∣ ∀𝑦 ∈ 𝑋 ((𝑥(+g‘𝐺)𝑦) ∈ 𝑠 ↔ (𝑦(+g‘𝐺)𝑥) ∈ 𝑠)} = {𝑥 ∈ 𝑋 ∣ ∀𝑦 ∈ 𝑋 ((𝑥(+g‘𝐺)𝑦) ∈ 𝑠 ↔ (𝑦(+g‘𝐺)𝑥) ∈ 𝑠)} | |
| 35 | 4, 10, 11, 12, 13, 14, 27, 33, 34 | sylow3lem6 19727 | . . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝑃 pSyl 𝐺)) → ((♯‘(𝑃 pSyl 𝐺)) mod 𝑃) = 1) |
| 36 | 32, 35 | eqtrid 2813 | . . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝑃 pSyl 𝐺)) → (𝑁 mod 𝑃) = 1) |
| 37 | 31, 36 | jca 521 | . 2 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝑃 pSyl 𝐺)) → (𝑁 ∥ ((♯‘𝑋) / (𝑃↑(𝑃 pCnt (♯‘𝑋)))) ∧ (𝑁 mod 𝑃) = 1)) |
| 38 | 8, 37 | exlimddv 1968 | 1 ⊢ (𝜑 → (𝑁 ∥ ((♯‘𝑋) / (𝑃↑(𝑃 pCnt (♯‘𝑋)))) ∧ (𝑁 mod 𝑃) = 1)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 = wceq 1570 ∃wex 1812 ∈ wcel 2146 ≠ wne 2961 ∀wral 3082 {crab 3419 ∅c0 4289 class class class wbr 5114 ↦ cmpt 5197 ran crn 5667 ‘cfv 6543 (class class class)co 7423 ∈ cmpo 7425 Fincfn 8952 1c1 11119 / cdiv 11889 mod cmo 13922 ↑cexp 14117 ♯chash 14386 ∥ cdvds 16335 ℙcprime 16754 pCnt cpc 16921 Basecbs 17294 +gcplusg 17335 Grpcgrp 19025 -gcsg 19027 pSyl cslw 19622 |
| 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 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2738 ax-rep 5243 ax-sep 5262 ax-nul 5274 ax-pow 5341 ax-pr 5409 ax-un 7745 ax-inf2 9620 ax-cnex 11174 ax-resscn 11175 ax-1cn 11176 ax-icn 11177 ax-addcl 11178 ax-addrcl 11179 ax-mulcl 11180 ax-mulrcl 11181 ax-mulcom 11182 ax-addass 11183 ax-mulass 11184 ax-distr 11185 ax-i2m1 11186 ax-1ne0 11187 ax-1rid 11188 ax-rnegex 11189 ax-rrecex 11190 ax-cnre 11191 ax-pre-lttri 11192 ax-pre-lttrn 11193 ax-pre-ltadd 11194 ax-pre-mulgt0 11195 ax-pre-sup 11196 |
| 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 2100 df-mo 2570 df-eu 2600 df-clab 2745 df-cleq 2758 df-clel 2841 df-nfc 2915 df-ne 2962 df-nel 3068 df-ral 3083 df-rex 3093 df-rmo 3372 df-reu 3373 df-rab 3420 df-v 3460 df-sbc 3748 df-csb 3857 df-dif 3911 df-un 3913 df-in 3915 df-ss 3925 df-pss 3928 df-nul 4290 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4878 df-int 4918 df-iun 4963 df-disj 5082 df-br 5115 df-opab 5179 df-mpt 5198 df-tr 5224 df-id 5561 df-eprel 5566 df-po 5574 df-so 5575 df-fr 5619 df-se 5620 df-we 5621 df-xp 5672 df-rel 5673 df-cnv 5674 df-co 5675 df-dm 5676 df-rn 5677 df-res 5678 df-ima 5679 df-pred 6309 df-ord 6370 df-on 6371 df-lim 6372 df-suc 6373 df-iota 6499 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-isom 6552 df-riota 7380 df-ov 7426 df-oprab 7427 df-mpo 7428 df-om 7872 df-1st 7995 df-2nd 7996 df-frecs 8287 df-wrecs 8318 df-recs 8367 df-rdg 8406 df-1o 8462 df-2o 8463 df-oadd 8466 df-omul 8467 df-er 8703 df-ec 8705 df-qs 8709 df-map 8835 df-en 8953 df-dom 8954 df-sdom 8955 df-fin 8956 df-sup 9412 df-inf 9413 df-oi 9482 df-dju 9906 df-card 9944 df-acn 9947 df-pnf 11263 df-mnf 11264 df-xr 11265 df-ltxr 11266 df-le 11267 df-sub 11461 df-neg 11462 df-div 11890 df-nn 12252 df-2 12321 df-3 12322 df-n0 12523 df-xnn0 12596 df-z 12610 df-uz 12881 df-q 12991 df-rp 13035 df-fz 13554 df-fzo 13702 df-fl 13845 df-mod 13923 df-seq 14058 df-exp 14118 df-fac 14330 df-bc 14359 df-hash 14387 df-cj 15176 df-re 15177 df-im 15178 df-sqrt 15312 df-abs 15313 df-clim 15565 df-sum 15764 df-dvds 16336 df-gcd 16578 df-prm 16755 df-pc 16922 df-sets 17249 df-slot 17267 df-ndx 17279 df-base 17295 df-ress 17316 df-plusg 17348 df-0g 17519 df-mgm 18723 df-sgrp 18802 df-mnd 18818 df-submnd 18867 df-grp 19028 df-minusg 19029 df-sbg 19030 df-mulg 19159 df-subg 19214 df-nsg 19215 df-eqg 19216 df-ghm 19309 df-ga 19385 df-od 19623 df-pgp 19625 df-slw 19626 |
| This theorem is used by: (None) |
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