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Mirrors > Home > MPE Home > Th. List > odhash2 | Structured version Visualization version GIF version |
Description: If an element has nonzero order, it generates a subgroup with size equal to the order. (Contributed by Stefan O'Rear, 12-Sep-2015.) |
Ref | Expression |
---|---|
odhash.x | ⊢ 𝑋 = (Base‘𝐺) |
odhash.o | ⊢ 𝑂 = (od‘𝐺) |
odhash.k | ⊢ 𝐾 = (mrCls‘(SubGrp‘𝐺)) |
Ref | Expression |
---|---|
odhash2 | ⊢ ((𝐺 ∈ Grp ∧ 𝐴 ∈ 𝑋 ∧ (𝑂‘𝐴) ∈ ℕ) → (♯‘(𝐾‘{𝐴})) = (𝑂‘𝐴)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | odhash.x | . . . 4 ⊢ 𝑋 = (Base‘𝐺) | |
2 | eqid 2738 | . . . 4 ⊢ (.g‘𝐺) = (.g‘𝐺) | |
3 | odhash.o | . . . 4 ⊢ 𝑂 = (od‘𝐺) | |
4 | odhash.k | . . . 4 ⊢ 𝐾 = (mrCls‘(SubGrp‘𝐺)) | |
5 | 1, 2, 3, 4 | odf1o2 19314 | . . 3 ⊢ ((𝐺 ∈ Grp ∧ 𝐴 ∈ 𝑋 ∧ (𝑂‘𝐴) ∈ ℕ) → (𝑥 ∈ (0..^(𝑂‘𝐴)) ↦ (𝑥(.g‘𝐺)𝐴)):(0..^(𝑂‘𝐴))–1-1-onto→(𝐾‘{𝐴})) |
6 | ovex 7385 | . . . 4 ⊢ (0..^(𝑂‘𝐴)) ∈ V | |
7 | 6 | f1oen 8872 | . . 3 ⊢ ((𝑥 ∈ (0..^(𝑂‘𝐴)) ↦ (𝑥(.g‘𝐺)𝐴)):(0..^(𝑂‘𝐴))–1-1-onto→(𝐾‘{𝐴}) → (0..^(𝑂‘𝐴)) ≈ (𝐾‘{𝐴})) |
8 | hasheni 14202 | . . 3 ⊢ ((0..^(𝑂‘𝐴)) ≈ (𝐾‘{𝐴}) → (♯‘(0..^(𝑂‘𝐴))) = (♯‘(𝐾‘{𝐴}))) | |
9 | 5, 7, 8 | 3syl 18 | . 2 ⊢ ((𝐺 ∈ Grp ∧ 𝐴 ∈ 𝑋 ∧ (𝑂‘𝐴) ∈ ℕ) → (♯‘(0..^(𝑂‘𝐴))) = (♯‘(𝐾‘{𝐴}))) |
10 | 1, 3 | odcl 19277 | . . . 4 ⊢ (𝐴 ∈ 𝑋 → (𝑂‘𝐴) ∈ ℕ0) |
11 | 10 | 3ad2ant2 1135 | . . 3 ⊢ ((𝐺 ∈ Grp ∧ 𝐴 ∈ 𝑋 ∧ (𝑂‘𝐴) ∈ ℕ) → (𝑂‘𝐴) ∈ ℕ0) |
12 | hashfzo0 14284 | . . 3 ⊢ ((𝑂‘𝐴) ∈ ℕ0 → (♯‘(0..^(𝑂‘𝐴))) = (𝑂‘𝐴)) | |
13 | 11, 12 | syl 17 | . 2 ⊢ ((𝐺 ∈ Grp ∧ 𝐴 ∈ 𝑋 ∧ (𝑂‘𝐴) ∈ ℕ) → (♯‘(0..^(𝑂‘𝐴))) = (𝑂‘𝐴)) |
14 | 9, 13 | eqtr3d 2780 | 1 ⊢ ((𝐺 ∈ Grp ∧ 𝐴 ∈ 𝑋 ∧ (𝑂‘𝐴) ∈ ℕ) → (♯‘(𝐾‘{𝐴})) = (𝑂‘𝐴)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ w3a 1088 = wceq 1542 ∈ wcel 2107 {csn 4585 class class class wbr 5104 ↦ cmpt 5187 –1-1-onto→wf1o 6493 ‘cfv 6494 (class class class)co 7352 ≈ cen 8839 0cc0 11010 ℕcn 12112 ℕ0cn0 12372 ..^cfzo 13522 ♯chash 14184 Basecbs 17043 mrClscmrc 17423 Grpcgrp 18708 .gcmg 18831 SubGrpcsubg 18881 odcod 19265 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2109 ax-9 2117 ax-10 2138 ax-11 2155 ax-12 2172 ax-ext 2709 ax-rep 5241 ax-sep 5255 ax-nul 5262 ax-pow 5319 ax-pr 5383 ax-un 7665 ax-cnex 11066 ax-resscn 11067 ax-1cn 11068 ax-icn 11069 ax-addcl 11070 ax-addrcl 11071 ax-mulcl 11072 ax-mulrcl 11073 ax-mulcom 11074 ax-addass 11075 ax-mulass 11076 ax-distr 11077 ax-i2m1 11078 ax-1ne0 11079 ax-1rid 11080 ax-rnegex 11081 ax-rrecex 11082 ax-cnre 11083 ax-pre-lttri 11084 ax-pre-lttrn 11085 ax-pre-ltadd 11086 ax-pre-mulgt0 11087 ax-pre-sup 11088 |
This theorem depends on definitions: df-bi 206 df-an 398 df-or 847 df-3or 1089 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1783 df-nf 1787 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2888 df-ne 2943 df-nel 3049 df-ral 3064 df-rex 3073 df-rmo 3352 df-reu 3353 df-rab 3407 df-v 3446 df-sbc 3739 df-csb 3855 df-dif 3912 df-un 3914 df-in 3916 df-ss 3926 df-pss 3928 df-nul 4282 df-if 4486 df-pw 4561 df-sn 4586 df-pr 4588 df-op 4592 df-uni 4865 df-int 4907 df-iun 4955 df-iin 4956 df-br 5105 df-opab 5167 df-mpt 5188 df-tr 5222 df-id 5530 df-eprel 5536 df-po 5544 df-so 5545 df-fr 5587 df-we 5589 df-xp 5638 df-rel 5639 df-cnv 5640 df-co 5641 df-dm 5642 df-rn 5643 df-res 5644 df-ima 5645 df-pred 6252 df-ord 6319 df-on 6320 df-lim 6321 df-suc 6322 df-iota 6446 df-fun 6496 df-fn 6497 df-f 6498 df-f1 6499 df-fo 6500 df-f1o 6501 df-fv 6502 df-riota 7308 df-ov 7355 df-oprab 7356 df-mpo 7357 df-om 7796 df-1st 7914 df-2nd 7915 df-frecs 8205 df-wrecs 8236 df-recs 8310 df-rdg 8349 df-1o 8405 df-er 8607 df-en 8843 df-dom 8844 df-sdom 8845 df-fin 8846 df-sup 9337 df-inf 9338 df-card 9834 df-pnf 11150 df-mnf 11151 df-xr 11152 df-ltxr 11153 df-le 11154 df-sub 11346 df-neg 11347 df-div 11772 df-nn 12113 df-2 12175 df-3 12176 df-n0 12373 df-z 12459 df-uz 12723 df-rp 12871 df-fz 13380 df-fzo 13523 df-fl 13652 df-mod 13730 df-seq 13862 df-exp 13923 df-hash 14185 df-cj 14944 df-re 14945 df-im 14946 df-sqrt 15080 df-abs 15081 df-dvds 16097 df-sets 16996 df-slot 17014 df-ndx 17026 df-base 17044 df-ress 17073 df-plusg 17106 df-0g 17283 df-mre 17426 df-mrc 17427 df-acs 17429 df-mgm 18457 df-sgrp 18506 df-mnd 18517 df-submnd 18562 df-grp 18711 df-minusg 18712 df-sbg 18713 df-mulg 18832 df-subg 18884 df-od 19269 |
This theorem is referenced by: odhash3 19317 proot1mul 41429 |
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