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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 19708 | . . . 4 ⊢ ((𝐺 ∈ Grp ∧ 𝑋 ∈ Fin ∧ 𝑃 ∈ ℙ) → (𝑃 pSyl 𝐺) ≠ ∅) |
| 6 | 1, 2, 3, 5 | syl3anc 1398 | . . 3 ⊢ (𝜑 → (𝑃 pSyl 𝐺) ≠ ∅) |
| 7 | n0 4307 | . . 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 2765 | . . . . 5 ⊢ (+g‘𝐺) = (+g‘𝐺) | |
| 14 | eqid 2765 | . . . . 5 ⊢ (-g‘𝐺) = (-g‘𝐺) | |
| 15 | oveq2 7424 | . . . . . . . . . 10 ⊢ (𝑐 = 𝑧 → (𝑎(+g‘𝐺)𝑐) = (𝑎(+g‘𝐺)𝑧)) | |
| 16 | 15 | oveq1d 7431 | . . . . . . . . 9 ⊢ (𝑐 = 𝑧 → ((𝑎(+g‘𝐺)𝑐)(-g‘𝐺)𝑎) = ((𝑎(+g‘𝐺)𝑧)(-g‘𝐺)𝑎)) |
| 17 | 16 | cbvmptv 5217 | . . . . . . . 8 ⊢ (𝑐 ∈ 𝑏 ↦ ((𝑎(+g‘𝐺)𝑐)(-g‘𝐺)𝑎)) = (𝑧 ∈ 𝑏 ↦ ((𝑎(+g‘𝐺)𝑧)(-g‘𝐺)𝑎)) |
| 18 | oveq1 7423 | . . . . . . . . . 10 ⊢ (𝑎 = 𝑥 → (𝑎(+g‘𝐺)𝑧) = (𝑥(+g‘𝐺)𝑧)) | |
| 19 | id 23 | . . . . . . . . . 10 ⊢ (𝑎 = 𝑥 → 𝑎 = 𝑥) | |
| 20 | 18, 19 | oveq12d 7434 | . . . . . . . . 9 ⊢ (𝑎 = 𝑥 → ((𝑎(+g‘𝐺)𝑧)(-g‘𝐺)𝑎) = ((𝑥(+g‘𝐺)𝑧)(-g‘𝐺)𝑥)) |
| 21 | 20 | mpteq2dv 5207 | . . . . . . . 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 2812 | . . . . . . 7 ⊢ (𝑎 = 𝑥 → (𝑐 ∈ 𝑏 ↦ ((𝑎(+g‘𝐺)𝑐)(-g‘𝐺)𝑎)) = (𝑧 ∈ 𝑏 ↦ ((𝑥(+g‘𝐺)𝑧)(-g‘𝐺)𝑥))) |
| 23 | 22 | rneqd 5930 | . . . . . 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 5202 | . . . . . . 7 ⊢ (𝑏 = 𝑦 → (𝑧 ∈ 𝑏 ↦ ((𝑥(+g‘𝐺)𝑧)(-g‘𝐺)𝑥)) = (𝑧 ∈ 𝑦 ↦ ((𝑥(+g‘𝐺)𝑧)(-g‘𝐺)𝑥))) | |
| 25 | 24 | rneqd 5930 | . . . . . 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 7511 | . . . . 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 2765 | . . . . 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 2765 | . . . . 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 19723 | . . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝑃 pSyl 𝐺)) → (♯‘(𝑃 pSyl 𝐺)) ∥ ((♯‘𝑋) / (𝑃↑(𝑃 pCnt (♯‘𝑋))))) |
| 31 | 9, 30 | eqbrtrid 5148 | . . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝑃 pSyl 𝐺)) → 𝑁 ∥ ((♯‘𝑋) / (𝑃↑(𝑃 pCnt (♯‘𝑋))))) |
| 32 | 9 | oveq1i 7426 | . . . 4 ⊢ (𝑁 mod 𝑃) = ((♯‘(𝑃 pSyl 𝐺)) mod 𝑃) |
| 33 | 23, 25 | cbvmpov 7511 | . . . . 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 2765 | . . . . 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 19725 | . . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝑃 pSyl 𝐺)) → ((♯‘(𝑃 pSyl 𝐺)) mod 𝑃) = 1) |
| 36 | 32, 35 | eqtrid 2812 | . . 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 2960 ∀wral 3081 {crab 3418 ∅c0 4286 class class class wbr 5111 ↦ cmpt 5194 ran crn 5664 ‘cfv 6540 (class class class)co 7416 ∈ cmpo 7418 Fincfn 8945 1c1 11112 / cdiv 11882 mod cmo 13915 ↑cexp 14110 ♯chash 14379 ∥ cdvds 16327 ℙcprime 16746 pCnt cpc 16913 Basecbs 17286 +gcplusg 17327 Grpcgrp 19023 -gcsg 19025 pSyl cslw 19620 |
| 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 2737 ax-rep 5240 ax-sep 5259 ax-nul 5271 ax-pow 5338 ax-pr 5406 ax-un 7738 ax-inf2 9613 ax-cnex 11167 ax-resscn 11168 ax-1cn 11169 ax-icn 11170 ax-addcl 11171 ax-addrcl 11172 ax-mulcl 11173 ax-mulrcl 11174 ax-mulcom 11175 ax-addass 11176 ax-mulass 11177 ax-distr 11178 ax-i2m1 11179 ax-1ne0 11180 ax-1rid 11181 ax-rnegex 11182 ax-rrecex 11183 ax-cnre 11184 ax-pre-lttri 11185 ax-pre-lttrn 11186 ax-pre-ltadd 11187 ax-pre-mulgt0 11188 ax-pre-sup 11189 |
| 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 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-nel 3067 df-ral 3082 df-rex 3092 df-rmo 3371 df-reu 3372 df-rab 3419 df-v 3459 df-sbc 3747 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-pss 3926 df-nul 4287 df-if 4490 df-pw 4566 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4875 df-int 4915 df-iun 4960 df-disj 5079 df-br 5112 df-opab 5176 df-mpt 5195 df-tr 5221 df-id 5558 df-eprel 5563 df-po 5571 df-so 5572 df-fr 5616 df-se 5617 df-we 5618 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-pred 6306 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6496 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-isom 6549 df-riota 7373 df-ov 7419 df-oprab 7420 df-mpo 7421 df-om 7865 df-1st 7988 df-2nd 7989 df-frecs 8280 df-wrecs 8311 df-recs 8360 df-rdg 8399 df-1o 8455 df-2o 8456 df-oadd 8459 df-omul 8460 df-er 8696 df-ec 8698 df-qs 8702 df-map 8828 df-en 8946 df-dom 8947 df-sdom 8948 df-fin 8949 df-sup 9405 df-inf 9406 df-oi 9475 df-dju 9899 df-card 9937 df-acn 9940 df-pnf 11256 df-mnf 11257 df-xr 11258 df-ltxr 11259 df-le 11260 df-sub 11454 df-neg 11455 df-div 11883 df-nn 12245 df-2 12314 df-3 12315 df-n0 12516 df-xnn0 12589 df-z 12603 df-uz 12874 df-q 12984 df-rp 13028 df-fz 13547 df-fzo 13695 df-fl 13838 df-mod 13916 df-seq 14051 df-exp 14111 df-fac 14323 df-bc 14352 df-hash 14380 df-cj 15169 df-re 15170 df-im 15171 df-sqrt 15305 df-abs 15306 df-clim 15558 df-sum 15757 df-dvds 16328 df-gcd 16570 df-prm 16747 df-pc 16914 df-sets 17241 df-slot 17259 df-ndx 17271 df-base 17287 df-ress 17308 df-plusg 17340 df-0g 17511 df-mgm 18715 df-sgrp 18798 df-mnd 18814 df-submnd 18865 df-grp 19026 df-minusg 19027 df-sbg 19028 df-mulg 19157 df-subg 19212 df-nsg 19213 df-eqg 19214 df-ghm 19307 df-ga 19383 df-od 19621 df-pgp 19623 df-slw 19624 |
| This theorem is used by: (None) |
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