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Mirrors > Home > MPE Home > Th. List > psgnevpmb | Structured version Visualization version GIF version |
Description: A class is an even permutation if it is a permutation with sign 1. (Contributed by SO, 9-Jul-2018.) |
Ref | Expression |
---|---|
evpmss.s | ⊢ 𝑆 = (SymGrp‘𝐷) |
evpmss.p | ⊢ 𝑃 = (Base‘𝑆) |
psgnevpmb.n | ⊢ 𝑁 = (pmSgn‘𝐷) |
Ref | Expression |
---|---|
psgnevpmb | ⊢ (𝐷 ∈ Fin → (𝐹 ∈ (pmEven‘𝐷) ↔ (𝐹 ∈ 𝑃 ∧ (𝑁‘𝐹) = 1))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elex 3459 | . . . 4 ⊢ (𝐷 ∈ Fin → 𝐷 ∈ V) | |
2 | fveq2 6645 | . . . . . . . 8 ⊢ (𝑑 = 𝐷 → (pmSgn‘𝑑) = (pmSgn‘𝐷)) | |
3 | psgnevpmb.n | . . . . . . . 8 ⊢ 𝑁 = (pmSgn‘𝐷) | |
4 | 2, 3 | eqtr4di 2851 | . . . . . . 7 ⊢ (𝑑 = 𝐷 → (pmSgn‘𝑑) = 𝑁) |
5 | 4 | cnveqd 5710 | . . . . . 6 ⊢ (𝑑 = 𝐷 → ◡(pmSgn‘𝑑) = ◡𝑁) |
6 | 5 | imaeq1d 5895 | . . . . 5 ⊢ (𝑑 = 𝐷 → (◡(pmSgn‘𝑑) “ {1}) = (◡𝑁 “ {1})) |
7 | df-evpm 18612 | . . . . 5 ⊢ pmEven = (𝑑 ∈ V ↦ (◡(pmSgn‘𝑑) “ {1})) | |
8 | 3 | fvexi 6659 | . . . . . . 7 ⊢ 𝑁 ∈ V |
9 | 8 | cnvex 7612 | . . . . . 6 ⊢ ◡𝑁 ∈ V |
10 | 9 | imaex 7603 | . . . . 5 ⊢ (◡𝑁 “ {1}) ∈ V |
11 | 6, 7, 10 | fvmpt 6745 | . . . 4 ⊢ (𝐷 ∈ V → (pmEven‘𝐷) = (◡𝑁 “ {1})) |
12 | 1, 11 | syl 17 | . . 3 ⊢ (𝐷 ∈ Fin → (pmEven‘𝐷) = (◡𝑁 “ {1})) |
13 | 12 | eleq2d 2875 | . 2 ⊢ (𝐷 ∈ Fin → (𝐹 ∈ (pmEven‘𝐷) ↔ 𝐹 ∈ (◡𝑁 “ {1}))) |
14 | evpmss.s | . . . . 5 ⊢ 𝑆 = (SymGrp‘𝐷) | |
15 | eqid 2798 | . . . . 5 ⊢ ((mulGrp‘ℂfld) ↾s {1, -1}) = ((mulGrp‘ℂfld) ↾s {1, -1}) | |
16 | 14, 3, 15 | psgnghm2 20270 | . . . 4 ⊢ (𝐷 ∈ Fin → 𝑁 ∈ (𝑆 GrpHom ((mulGrp‘ℂfld) ↾s {1, -1}))) |
17 | evpmss.p | . . . . 5 ⊢ 𝑃 = (Base‘𝑆) | |
18 | eqid 2798 | . . . . 5 ⊢ (Base‘((mulGrp‘ℂfld) ↾s {1, -1})) = (Base‘((mulGrp‘ℂfld) ↾s {1, -1})) | |
19 | 17, 18 | ghmf 18354 | . . . 4 ⊢ (𝑁 ∈ (𝑆 GrpHom ((mulGrp‘ℂfld) ↾s {1, -1})) → 𝑁:𝑃⟶(Base‘((mulGrp‘ℂfld) ↾s {1, -1}))) |
20 | 16, 19 | syl 17 | . . 3 ⊢ (𝐷 ∈ Fin → 𝑁:𝑃⟶(Base‘((mulGrp‘ℂfld) ↾s {1, -1}))) |
21 | ffn 6487 | . . 3 ⊢ (𝑁:𝑃⟶(Base‘((mulGrp‘ℂfld) ↾s {1, -1})) → 𝑁 Fn 𝑃) | |
22 | fniniseg 6807 | . . 3 ⊢ (𝑁 Fn 𝑃 → (𝐹 ∈ (◡𝑁 “ {1}) ↔ (𝐹 ∈ 𝑃 ∧ (𝑁‘𝐹) = 1))) | |
23 | 20, 21, 22 | 3syl 18 | . 2 ⊢ (𝐷 ∈ Fin → (𝐹 ∈ (◡𝑁 “ {1}) ↔ (𝐹 ∈ 𝑃 ∧ (𝑁‘𝐹) = 1))) |
24 | 13, 23 | bitrd 282 | 1 ⊢ (𝐷 ∈ Fin → (𝐹 ∈ (pmEven‘𝐷) ↔ (𝐹 ∈ 𝑃 ∧ (𝑁‘𝐹) = 1))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 209 ∧ wa 399 = wceq 1538 ∈ wcel 2111 Vcvv 3441 {csn 4525 {cpr 4527 ◡ccnv 5518 “ cima 5522 Fn wfn 6319 ⟶wf 6320 ‘cfv 6324 (class class class)co 7135 Fincfn 8492 1c1 10527 -cneg 10860 Basecbs 16475 ↾s cress 16476 GrpHom cghm 18347 SymGrpcsymg 18487 pmSgncpsgn 18609 pmEvencevpm 18610 mulGrpcmgp 19232 ℂfldccnfld 20091 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2770 ax-rep 5154 ax-sep 5167 ax-nul 5174 ax-pow 5231 ax-pr 5295 ax-un 7441 ax-cnex 10582 ax-resscn 10583 ax-1cn 10584 ax-icn 10585 ax-addcl 10586 ax-addrcl 10587 ax-mulcl 10588 ax-mulrcl 10589 ax-mulcom 10590 ax-addass 10591 ax-mulass 10592 ax-distr 10593 ax-i2m1 10594 ax-1ne0 10595 ax-1rid 10596 ax-rnegex 10597 ax-rrecex 10598 ax-cnre 10599 ax-pre-lttri 10600 ax-pre-lttrn 10601 ax-pre-ltadd 10602 ax-pre-mulgt0 10603 ax-addf 10605 ax-mulf 10606 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3or 1085 df-3an 1086 df-xor 1503 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2598 df-eu 2629 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-ne 2988 df-nel 3092 df-ral 3111 df-rex 3112 df-reu 3113 df-rmo 3114 df-rab 3115 df-v 3443 df-sbc 3721 df-csb 3829 df-dif 3884 df-un 3886 df-in 3888 df-ss 3898 df-pss 3900 df-nul 4244 df-if 4426 df-pw 4499 df-sn 4526 df-pr 4528 df-tp 4530 df-op 4532 df-ot 4534 df-uni 4801 df-int 4839 df-iun 4883 df-iin 4884 df-br 5031 df-opab 5093 df-mpt 5111 df-tr 5137 df-id 5425 df-eprel 5430 df-po 5438 df-so 5439 df-fr 5478 df-se 5479 df-we 5480 df-xp 5525 df-rel 5526 df-cnv 5527 df-co 5528 df-dm 5529 df-rn 5530 df-res 5531 df-ima 5532 df-pred 6116 df-ord 6162 df-on 6163 df-lim 6164 df-suc 6165 df-iota 6283 df-fun 6326 df-fn 6327 df-f 6328 df-f1 6329 df-fo 6330 df-f1o 6331 df-fv 6332 df-isom 6333 df-riota 7093 df-ov 7138 df-oprab 7139 df-mpo 7140 df-om 7561 df-1st 7671 df-2nd 7672 df-tpos 7875 df-wrecs 7930 df-recs 7991 df-rdg 8029 df-1o 8085 df-2o 8086 df-oadd 8089 df-er 8272 df-map 8391 df-en 8493 df-dom 8494 df-sdom 8495 df-fin 8496 df-card 9352 df-pnf 10666 df-mnf 10667 df-xr 10668 df-ltxr 10669 df-le 10670 df-sub 10861 df-neg 10862 df-div 11287 df-nn 11626 df-2 11688 df-3 11689 df-4 11690 df-5 11691 df-6 11692 df-7 11693 df-8 11694 df-9 11695 df-n0 11886 df-xnn0 11956 df-z 11970 df-dec 12087 df-uz 12232 df-rp 12378 df-fz 12886 df-fzo 13029 df-seq 13365 df-exp 13426 df-hash 13687 df-word 13858 df-lsw 13906 df-concat 13914 df-s1 13941 df-substr 13994 df-pfx 14024 df-splice 14103 df-reverse 14112 df-s2 14201 df-struct 16477 df-ndx 16478 df-slot 16479 df-base 16481 df-sets 16482 df-ress 16483 df-plusg 16570 df-mulr 16571 df-starv 16572 df-tset 16576 df-ple 16577 df-ds 16579 df-unif 16580 df-0g 16707 df-gsum 16708 df-mre 16849 df-mrc 16850 df-acs 16852 df-mgm 17844 df-sgrp 17893 df-mnd 17904 df-mhm 17948 df-submnd 17949 df-efmnd 18026 df-grp 18098 df-minusg 18099 df-subg 18268 df-ghm 18348 df-gim 18391 df-oppg 18466 df-symg 18488 df-pmtr 18562 df-psgn 18611 df-evpm 18612 df-cmn 18900 df-abl 18901 df-mgp 19233 df-ur 19245 df-ring 19292 df-cring 19293 df-oppr 19369 df-dvdsr 19387 df-unit 19388 df-invr 19418 df-dvr 19429 df-drng 19497 df-cnfld 20092 |
This theorem is referenced by: psgnodpm 20277 psgnevpm 20278 evpmodpmf1o 20285 mdet0pr 21197 odpmco 30780 evpmid 30840 cyc3evpm 30842 |
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