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Mirrors > Home > MPE Home > Th. List > zrhpsgnodpm | Structured version Visualization version GIF version |
Description: The sign of an odd permutation embedded into a ring is the additive inverse of the multiplicative neutral element of the ring. (Contributed by SO, 9-Jul-2018.) |
Ref | Expression |
---|---|
zrhpsgnevpm.y | ⊢ 𝑌 = (ℤRHom‘𝑅) |
zrhpsgnevpm.s | ⊢ 𝑆 = (pmSgn‘𝑁) |
zrhpsgnevpm.o | ⊢ 1 = (1r‘𝑅) |
zrhpsgnodpm.p | ⊢ 𝑃 = (Base‘(SymGrp‘𝑁)) |
zrhpsgnodpm.i | ⊢ 𝐼 = (invg‘𝑅) |
Ref | Expression |
---|---|
zrhpsgnodpm | ⊢ ((𝑅 ∈ Ring ∧ 𝑁 ∈ Fin ∧ 𝐹 ∈ (𝑃 ∖ (pmEven‘𝑁))) → ((𝑌 ∘ 𝑆)‘𝐹) = (𝐼‘ 1 )) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqid 2738 | . . . . . 6 ⊢ (SymGrp‘𝑁) = (SymGrp‘𝑁) | |
2 | zrhpsgnevpm.s | . . . . . 6 ⊢ 𝑆 = (pmSgn‘𝑁) | |
3 | eqid 2738 | . . . . . 6 ⊢ ((mulGrp‘ℂfld) ↾s {1, -1}) = ((mulGrp‘ℂfld) ↾s {1, -1}) | |
4 | 1, 2, 3 | psgnghm2 20786 | . . . . 5 ⊢ (𝑁 ∈ Fin → 𝑆 ∈ ((SymGrp‘𝑁) GrpHom ((mulGrp‘ℂfld) ↾s {1, -1}))) |
5 | zrhpsgnodpm.p | . . . . . 6 ⊢ 𝑃 = (Base‘(SymGrp‘𝑁)) | |
6 | eqid 2738 | . . . . . 6 ⊢ (Base‘((mulGrp‘ℂfld) ↾s {1, -1})) = (Base‘((mulGrp‘ℂfld) ↾s {1, -1})) | |
7 | 5, 6 | ghmf 18838 | . . . . 5 ⊢ (𝑆 ∈ ((SymGrp‘𝑁) GrpHom ((mulGrp‘ℂfld) ↾s {1, -1})) → 𝑆:𝑃⟶(Base‘((mulGrp‘ℂfld) ↾s {1, -1}))) |
8 | 4, 7 | syl 17 | . . . 4 ⊢ (𝑁 ∈ Fin → 𝑆:𝑃⟶(Base‘((mulGrp‘ℂfld) ↾s {1, -1}))) |
9 | 8 | 3ad2ant2 1133 | . . 3 ⊢ ((𝑅 ∈ Ring ∧ 𝑁 ∈ Fin ∧ 𝐹 ∈ (𝑃 ∖ (pmEven‘𝑁))) → 𝑆:𝑃⟶(Base‘((mulGrp‘ℂfld) ↾s {1, -1}))) |
10 | eldifi 4061 | . . . 4 ⊢ (𝐹 ∈ (𝑃 ∖ (pmEven‘𝑁)) → 𝐹 ∈ 𝑃) | |
11 | 10 | 3ad2ant3 1134 | . . 3 ⊢ ((𝑅 ∈ Ring ∧ 𝑁 ∈ Fin ∧ 𝐹 ∈ (𝑃 ∖ (pmEven‘𝑁))) → 𝐹 ∈ 𝑃) |
12 | fvco3 6867 | . . 3 ⊢ ((𝑆:𝑃⟶(Base‘((mulGrp‘ℂfld) ↾s {1, -1})) ∧ 𝐹 ∈ 𝑃) → ((𝑌 ∘ 𝑆)‘𝐹) = (𝑌‘(𝑆‘𝐹))) | |
13 | 9, 11, 12 | syl2anc 584 | . 2 ⊢ ((𝑅 ∈ Ring ∧ 𝑁 ∈ Fin ∧ 𝐹 ∈ (𝑃 ∖ (pmEven‘𝑁))) → ((𝑌 ∘ 𝑆)‘𝐹) = (𝑌‘(𝑆‘𝐹))) |
14 | 1, 5, 2 | psgnodpm 20793 | . . . 4 ⊢ ((𝑁 ∈ Fin ∧ 𝐹 ∈ (𝑃 ∖ (pmEven‘𝑁))) → (𝑆‘𝐹) = -1) |
15 | 14 | 3adant1 1129 | . . 3 ⊢ ((𝑅 ∈ Ring ∧ 𝑁 ∈ Fin ∧ 𝐹 ∈ (𝑃 ∖ (pmEven‘𝑁))) → (𝑆‘𝐹) = -1) |
16 | 15 | fveq2d 6778 | . 2 ⊢ ((𝑅 ∈ Ring ∧ 𝑁 ∈ Fin ∧ 𝐹 ∈ (𝑃 ∖ (pmEven‘𝑁))) → (𝑌‘(𝑆‘𝐹)) = (𝑌‘-1)) |
17 | zrhpsgnevpm.y | . . . . . . 7 ⊢ 𝑌 = (ℤRHom‘𝑅) | |
18 | 17 | zrhrhm 20713 | . . . . . 6 ⊢ (𝑅 ∈ Ring → 𝑌 ∈ (ℤring RingHom 𝑅)) |
19 | rhmghm 19969 | . . . . . 6 ⊢ (𝑌 ∈ (ℤring RingHom 𝑅) → 𝑌 ∈ (ℤring GrpHom 𝑅)) | |
20 | 18, 19 | syl 17 | . . . . 5 ⊢ (𝑅 ∈ Ring → 𝑌 ∈ (ℤring GrpHom 𝑅)) |
21 | 1z 12350 | . . . . . 6 ⊢ 1 ∈ ℤ | |
22 | 21 | a1i 11 | . . . . 5 ⊢ (𝑅 ∈ Ring → 1 ∈ ℤ) |
23 | zringbas 20676 | . . . . . 6 ⊢ ℤ = (Base‘ℤring) | |
24 | eqid 2738 | . . . . . 6 ⊢ (invg‘ℤring) = (invg‘ℤring) | |
25 | zrhpsgnodpm.i | . . . . . 6 ⊢ 𝐼 = (invg‘𝑅) | |
26 | 23, 24, 25 | ghminv 18841 | . . . . 5 ⊢ ((𝑌 ∈ (ℤring GrpHom 𝑅) ∧ 1 ∈ ℤ) → (𝑌‘((invg‘ℤring)‘1)) = (𝐼‘(𝑌‘1))) |
27 | 20, 22, 26 | syl2anc 584 | . . . 4 ⊢ (𝑅 ∈ Ring → (𝑌‘((invg‘ℤring)‘1)) = (𝐼‘(𝑌‘1))) |
28 | zringinvg 20687 | . . . . . . . 8 ⊢ (1 ∈ ℤ → -1 = ((invg‘ℤring)‘1)) | |
29 | 21, 28 | ax-mp 5 | . . . . . . 7 ⊢ -1 = ((invg‘ℤring)‘1) |
30 | 29 | eqcomi 2747 | . . . . . 6 ⊢ ((invg‘ℤring)‘1) = -1 |
31 | 30 | fveq2i 6777 | . . . . 5 ⊢ (𝑌‘((invg‘ℤring)‘1)) = (𝑌‘-1) |
32 | 31 | a1i 11 | . . . 4 ⊢ (𝑅 ∈ Ring → (𝑌‘((invg‘ℤring)‘1)) = (𝑌‘-1)) |
33 | zrhpsgnevpm.o | . . . . . 6 ⊢ 1 = (1r‘𝑅) | |
34 | 17, 33 | zrh1 20714 | . . . . 5 ⊢ (𝑅 ∈ Ring → (𝑌‘1) = 1 ) |
35 | 34 | fveq2d 6778 | . . . 4 ⊢ (𝑅 ∈ Ring → (𝐼‘(𝑌‘1)) = (𝐼‘ 1 )) |
36 | 27, 32, 35 | 3eqtr3d 2786 | . . 3 ⊢ (𝑅 ∈ Ring → (𝑌‘-1) = (𝐼‘ 1 )) |
37 | 36 | 3ad2ant1 1132 | . 2 ⊢ ((𝑅 ∈ Ring ∧ 𝑁 ∈ Fin ∧ 𝐹 ∈ (𝑃 ∖ (pmEven‘𝑁))) → (𝑌‘-1) = (𝐼‘ 1 )) |
38 | 13, 16, 37 | 3eqtrd 2782 | 1 ⊢ ((𝑅 ∈ Ring ∧ 𝑁 ∈ Fin ∧ 𝐹 ∈ (𝑃 ∖ (pmEven‘𝑁))) → ((𝑌 ∘ 𝑆)‘𝐹) = (𝐼‘ 1 )) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ w3a 1086 = wceq 1539 ∈ wcel 2106 ∖ cdif 3884 {cpr 4563 ∘ ccom 5593 ⟶wf 6429 ‘cfv 6433 (class class class)co 7275 Fincfn 8733 1c1 10872 -cneg 11206 ℤcz 12319 Basecbs 16912 ↾s cress 16941 invgcminusg 18578 GrpHom cghm 18831 SymGrpcsymg 18974 pmSgncpsgn 19097 pmEvencevpm 19098 mulGrpcmgp 19720 1rcur 19737 Ringcrg 19783 RingHom crh 19956 ℂfldccnfld 20597 ℤringczring 20670 ℤRHomczrh 20701 |
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 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-rep 5209 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 ax-un 7588 ax-cnex 10927 ax-resscn 10928 ax-1cn 10929 ax-icn 10930 ax-addcl 10931 ax-addrcl 10932 ax-mulcl 10933 ax-mulrcl 10934 ax-mulcom 10935 ax-addass 10936 ax-mulass 10937 ax-distr 10938 ax-i2m1 10939 ax-1ne0 10940 ax-1rid 10941 ax-rnegex 10942 ax-rrecex 10943 ax-cnre 10944 ax-pre-lttri 10945 ax-pre-lttrn 10946 ax-pre-ltadd 10947 ax-pre-mulgt0 10948 ax-addf 10950 ax-mulf 10951 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-xor 1507 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-nel 3050 df-ral 3069 df-rex 3070 df-rmo 3071 df-reu 3072 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-pss 3906 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-tp 4566 df-op 4568 df-ot 4570 df-uni 4840 df-int 4880 df-iun 4926 df-iin 4927 df-br 5075 df-opab 5137 df-mpt 5158 df-tr 5192 df-id 5489 df-eprel 5495 df-po 5503 df-so 5504 df-fr 5544 df-se 5545 df-we 5546 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-pred 6202 df-ord 6269 df-on 6270 df-lim 6271 df-suc 6272 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-fv 6441 df-isom 6442 df-riota 7232 df-ov 7278 df-oprab 7279 df-mpo 7280 df-om 7713 df-1st 7831 df-2nd 7832 df-tpos 8042 df-frecs 8097 df-wrecs 8128 df-recs 8202 df-rdg 8241 df-1o 8297 df-2o 8298 df-er 8498 df-map 8617 df-en 8734 df-dom 8735 df-sdom 8736 df-fin 8737 df-card 9697 df-pnf 11011 df-mnf 11012 df-xr 11013 df-ltxr 11014 df-le 11015 df-sub 11207 df-neg 11208 df-div 11633 df-nn 11974 df-2 12036 df-3 12037 df-4 12038 df-5 12039 df-6 12040 df-7 12041 df-8 12042 df-9 12043 df-n0 12234 df-xnn0 12306 df-z 12320 df-dec 12438 df-uz 12583 df-rp 12731 df-fz 13240 df-fzo 13383 df-seq 13722 df-exp 13783 df-hash 14045 df-word 14218 df-lsw 14266 df-concat 14274 df-s1 14301 df-substr 14354 df-pfx 14384 df-splice 14463 df-reverse 14472 df-s2 14561 df-struct 16848 df-sets 16865 df-slot 16883 df-ndx 16895 df-base 16913 df-ress 16942 df-plusg 16975 df-mulr 16976 df-starv 16977 df-tset 16981 df-ple 16982 df-ds 16984 df-unif 16985 df-0g 17152 df-gsum 17153 df-mre 17295 df-mrc 17296 df-acs 17298 df-mgm 18326 df-sgrp 18375 df-mnd 18386 df-mhm 18430 df-submnd 18431 df-efmnd 18508 df-grp 18580 df-minusg 18581 df-mulg 18701 df-subg 18752 df-ghm 18832 df-gim 18875 df-oppg 18950 df-symg 18975 df-pmtr 19050 df-psgn 19099 df-evpm 19100 df-cmn 19388 df-abl 19389 df-mgp 19721 df-ur 19738 df-ring 19785 df-cring 19786 df-oppr 19862 df-dvdsr 19883 df-unit 19884 df-invr 19914 df-dvr 19925 df-rnghom 19959 df-drng 19993 df-subrg 20022 df-cnfld 20598 df-zring 20671 df-zrh 20705 |
This theorem is referenced by: mdetralt 21757 mdetunilem7 21767 |
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