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Mirrors > Home > MPE Home > Th. List > psgnval | Structured version Visualization version GIF version |
Description: Value of the permutation sign function. (Contributed by Stefan O'Rear, 28-Aug-2015.) |
Ref | Expression |
---|---|
psgnval.g | ⊢ 𝐺 = (SymGrp‘𝐷) |
psgnval.t | ⊢ 𝑇 = ran (pmTrsp‘𝐷) |
psgnval.n | ⊢ 𝑁 = (pmSgn‘𝐷) |
Ref | Expression |
---|---|
psgnval | ⊢ (𝑃 ∈ dom 𝑁 → (𝑁‘𝑃) = (℩𝑠∃𝑤 ∈ Word 𝑇(𝑃 = (𝐺 Σg 𝑤) ∧ 𝑠 = (-1↑(♯‘𝑤))))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqeq1 2742 | . . . . 5 ⊢ (𝑡 = 𝑃 → (𝑡 = (𝐺 Σg 𝑤) ↔ 𝑃 = (𝐺 Σg 𝑤))) | |
2 | 1 | anbi1d 629 | . . . 4 ⊢ (𝑡 = 𝑃 → ((𝑡 = (𝐺 Σg 𝑤) ∧ 𝑠 = (-1↑(♯‘𝑤))) ↔ (𝑃 = (𝐺 Σg 𝑤) ∧ 𝑠 = (-1↑(♯‘𝑤))))) |
3 | 2 | rexbidv 3225 | . . 3 ⊢ (𝑡 = 𝑃 → (∃𝑤 ∈ Word 𝑇(𝑡 = (𝐺 Σg 𝑤) ∧ 𝑠 = (-1↑(♯‘𝑤))) ↔ ∃𝑤 ∈ Word 𝑇(𝑃 = (𝐺 Σg 𝑤) ∧ 𝑠 = (-1↑(♯‘𝑤))))) |
4 | 3 | iotabidv 6402 | . 2 ⊢ (𝑡 = 𝑃 → (℩𝑠∃𝑤 ∈ Word 𝑇(𝑡 = (𝐺 Σg 𝑤) ∧ 𝑠 = (-1↑(♯‘𝑤)))) = (℩𝑠∃𝑤 ∈ Word 𝑇(𝑃 = (𝐺 Σg 𝑤) ∧ 𝑠 = (-1↑(♯‘𝑤))))) |
5 | psgnval.g | . . 3 ⊢ 𝐺 = (SymGrp‘𝐷) | |
6 | eqid 2738 | . . 3 ⊢ (Base‘𝐺) = (Base‘𝐺) | |
7 | eqid 2738 | . . . . 5 ⊢ {𝑥 ∈ (Base‘𝐺) ∣ dom (𝑥 ∖ I ) ∈ Fin} = {𝑥 ∈ (Base‘𝐺) ∣ dom (𝑥 ∖ I ) ∈ Fin} | |
8 | psgnval.n | . . . . 5 ⊢ 𝑁 = (pmSgn‘𝐷) | |
9 | 5, 6, 7, 8 | psgnfn 19024 | . . . 4 ⊢ 𝑁 Fn {𝑥 ∈ (Base‘𝐺) ∣ dom (𝑥 ∖ I ) ∈ Fin} |
10 | 9 | fndmi 6521 | . . 3 ⊢ dom 𝑁 = {𝑥 ∈ (Base‘𝐺) ∣ dom (𝑥 ∖ I ) ∈ Fin} |
11 | psgnval.t | . . 3 ⊢ 𝑇 = ran (pmTrsp‘𝐷) | |
12 | 5, 6, 10, 11, 8 | psgnfval 19023 | . 2 ⊢ 𝑁 = (𝑡 ∈ dom 𝑁 ↦ (℩𝑠∃𝑤 ∈ Word 𝑇(𝑡 = (𝐺 Σg 𝑤) ∧ 𝑠 = (-1↑(♯‘𝑤))))) |
13 | iotaex 6398 | . 2 ⊢ (℩𝑠∃𝑤 ∈ Word 𝑇(𝑃 = (𝐺 Σg 𝑤) ∧ 𝑠 = (-1↑(♯‘𝑤)))) ∈ V | |
14 | 4, 12, 13 | fvmpt 6857 | 1 ⊢ (𝑃 ∈ dom 𝑁 → (𝑁‘𝑃) = (℩𝑠∃𝑤 ∈ Word 𝑇(𝑃 = (𝐺 Σg 𝑤) ∧ 𝑠 = (-1↑(♯‘𝑤))))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 395 = wceq 1539 ∈ wcel 2108 ∃wrex 3064 {crab 3067 ∖ cdif 3880 I cid 5479 dom cdm 5580 ran crn 5581 ℩cio 6374 ‘cfv 6418 (class class class)co 7255 Fincfn 8691 1c1 10803 -cneg 11136 ↑cexp 13710 ♯chash 13972 Word cword 14145 Basecbs 16840 Σg cgsu 17068 SymGrpcsymg 18889 pmTrspcpmtr 18964 pmSgncpsgn 19012 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-rep 5205 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 ax-cnex 10858 ax-resscn 10859 ax-1cn 10860 ax-icn 10861 ax-addcl 10862 ax-addrcl 10863 ax-mulcl 10864 ax-mulrcl 10865 ax-mulcom 10866 ax-addass 10867 ax-mulass 10868 ax-distr 10869 ax-i2m1 10870 ax-1ne0 10871 ax-1rid 10872 ax-rnegex 10873 ax-rrecex 10874 ax-cnre 10875 ax-pre-lttri 10876 ax-pre-lttrn 10877 ax-pre-ltadd 10878 ax-pre-mulgt0 10879 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-nel 3049 df-ral 3068 df-rex 3069 df-reu 3070 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3902 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4837 df-int 4877 df-iun 4923 df-br 5071 df-opab 5133 df-mpt 5154 df-tr 5188 df-id 5480 df-eprel 5486 df-po 5494 df-so 5495 df-fr 5535 df-we 5537 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-pred 6191 df-ord 6254 df-on 6255 df-lim 6256 df-suc 6257 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-riota 7212 df-ov 7258 df-oprab 7259 df-mpo 7260 df-om 7688 df-1st 7804 df-2nd 7805 df-frecs 8068 df-wrecs 8099 df-recs 8173 df-rdg 8212 df-1o 8267 df-er 8456 df-en 8692 df-dom 8693 df-sdom 8694 df-fin 8695 df-card 9628 df-pnf 10942 df-mnf 10943 df-xr 10944 df-ltxr 10945 df-le 10946 df-sub 11137 df-neg 11138 df-nn 11904 df-n0 12164 df-z 12250 df-uz 12512 df-fz 13169 df-fzo 13312 df-hash 13973 df-word 14146 df-slot 16811 df-ndx 16823 df-base 16841 df-psgn 19014 |
This theorem is referenced by: psgnvali 19031 psgnvalii 19032 psgnvalfi 19037 psgnprfval 19044 |
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