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| Mirrors > Home > MPE Home > Th. List > Mathboxes > cnmsgn0g | Structured version Visualization version GIF version | ||
| Description: The neutral element of the sign subgroup of the complex numbers. (Contributed by Thierry Arnoux, 1-Nov-2023.) |
| Ref | Expression |
|---|---|
| cnmsgn0g.1 | ⊢ 𝑈 = ((mulGrp‘ℂfld) ↾s {1, -1}) |
| Ref | Expression |
|---|---|
| cnmsgn0g | ⊢ 1 = (0g‘𝑈) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cnring 21362 | . . 3 ⊢ ℂfld ∈ Ring | |
| 2 | eqid 2737 | . . . 4 ⊢ (mulGrp‘ℂfld) = (mulGrp‘ℂfld) | |
| 3 | 2 | ringmgp 20191 | . . 3 ⊢ (ℂfld ∈ Ring → (mulGrp‘ℂfld) ∈ Mnd) |
| 4 | 1, 3 | ax-mp 5 | . 2 ⊢ (mulGrp‘ℂfld) ∈ Mnd |
| 5 | 1ex 11142 | . . 3 ⊢ 1 ∈ V | |
| 6 | 5 | prid1 4721 | . 2 ⊢ 1 ∈ {1, -1} |
| 7 | ax-1cn 11098 | . . 3 ⊢ 1 ∈ ℂ | |
| 8 | neg1cn 12144 | . . 3 ⊢ -1 ∈ ℂ | |
| 9 | prssi 4779 | . . 3 ⊢ ((1 ∈ ℂ ∧ -1 ∈ ℂ) → {1, -1} ⊆ ℂ) | |
| 10 | 7, 8, 9 | mp2an 693 | . 2 ⊢ {1, -1} ⊆ ℂ |
| 11 | cnmsgn0g.1 | . . 3 ⊢ 𝑈 = ((mulGrp‘ℂfld) ↾s {1, -1}) | |
| 12 | cnfldbas 21330 | . . . 4 ⊢ ℂ = (Base‘ℂfld) | |
| 13 | 2, 12 | mgpbas 20097 | . . 3 ⊢ ℂ = (Base‘(mulGrp‘ℂfld)) |
| 14 | cnfld1 21365 | . . . 4 ⊢ 1 = (1r‘ℂfld) | |
| 15 | 2, 14 | ringidval 20135 | . . 3 ⊢ 1 = (0g‘(mulGrp‘ℂfld)) |
| 16 | 11, 13, 15 | ress0g 18701 | . 2 ⊢ (((mulGrp‘ℂfld) ∈ Mnd ∧ 1 ∈ {1, -1} ∧ {1, -1} ⊆ ℂ) → 1 = (0g‘𝑈)) |
| 17 | 4, 6, 10, 16 | mp3an 1464 | 1 ⊢ 1 = (0g‘𝑈) |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1542 ∈ wcel 2114 ⊆ wss 3903 {cpr 4584 ‘cfv 6502 (class class class)co 7370 ℂcc 11038 1c1 11041 -cneg 11379 ↾s cress 17171 0gc0g 17373 Mndcmnd 18673 mulGrpcmgp 20092 Ringcrg 20185 ℂfldccnfld 21326 |
| 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 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5245 ax-nul 5255 ax-pow 5314 ax-pr 5381 ax-un 7692 ax-cnex 11096 ax-resscn 11097 ax-1cn 11098 ax-icn 11099 ax-addcl 11100 ax-addrcl 11101 ax-mulcl 11102 ax-mulrcl 11103 ax-mulcom 11104 ax-addass 11105 ax-mulass 11106 ax-distr 11107 ax-i2m1 11108 ax-1ne0 11109 ax-1rid 11110 ax-rnegex 11111 ax-rrecex 11112 ax-cnre 11113 ax-pre-lttri 11114 ax-pre-lttrn 11115 ax-pre-ltadd 11116 ax-pre-mulgt0 11117 ax-addf 11119 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-rmo 3352 df-reu 3353 df-rab 3402 df-v 3444 df-sbc 3743 df-csb 3852 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-pss 3923 df-nul 4288 df-if 4482 df-pw 4558 df-sn 4583 df-pr 4585 df-tp 4587 df-op 4589 df-uni 4866 df-iun 4950 df-br 5101 df-opab 5163 df-mpt 5182 df-tr 5208 df-id 5529 df-eprel 5534 df-po 5542 df-so 5543 df-fr 5587 df-we 5589 df-xp 5640 df-rel 5641 df-cnv 5642 df-co 5643 df-dm 5644 df-rn 5645 df-res 5646 df-ima 5647 df-pred 6269 df-ord 6330 df-on 6331 df-lim 6332 df-suc 6333 df-iota 6458 df-fun 6504 df-fn 6505 df-f 6506 df-f1 6507 df-fo 6508 df-f1o 6509 df-fv 6510 df-riota 7327 df-ov 7373 df-oprab 7374 df-mpo 7375 df-om 7821 df-1st 7945 df-2nd 7946 df-frecs 8235 df-wrecs 8266 df-recs 8315 df-rdg 8353 df-1o 8409 df-er 8647 df-en 8898 df-dom 8899 df-sdom 8900 df-fin 8901 df-pnf 11182 df-mnf 11183 df-xr 11184 df-ltxr 11185 df-le 11186 df-sub 11380 df-neg 11381 df-nn 12160 df-2 12222 df-3 12223 df-4 12224 df-5 12225 df-6 12226 df-7 12227 df-8 12228 df-9 12229 df-n0 12416 df-z 12503 df-dec 12622 df-uz 12766 df-fz 13438 df-struct 17088 df-sets 17105 df-slot 17123 df-ndx 17135 df-base 17151 df-ress 17172 df-plusg 17204 df-mulr 17205 df-starv 17206 df-tset 17210 df-ple 17211 df-ds 17213 df-unif 17214 df-0g 17375 df-mgm 18579 df-sgrp 18658 df-mnd 18674 df-grp 18883 df-cmn 19728 df-mgp 20093 df-ur 20134 df-ring 20187 df-cring 20188 df-cnfld 21327 |
| This theorem is referenced by: evpmsubg 33247 |
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