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Mirrors > Home > MPE Home > Th. List > cnfldinv | Structured version Visualization version GIF version |
Description: The multiplicative inverse in the field of complex numbers. (Contributed by Mario Carneiro, 4-Dec-2014.) |
Ref | Expression |
---|---|
cnfldinv | ⊢ ((𝑋 ∈ ℂ ∧ 𝑋 ≠ 0) → ((invr‘ℂfld)‘𝑋) = (1 / 𝑋)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eldifsn 4726 | . 2 ⊢ (𝑋 ∈ (ℂ ∖ {0}) ↔ (𝑋 ∈ ℂ ∧ 𝑋 ≠ 0)) | |
2 | cnring 20618 | . . 3 ⊢ ℂfld ∈ Ring | |
3 | cnfldbas 20599 | . . . 4 ⊢ ℂ = (Base‘ℂfld) | |
4 | cnfld0 20620 | . . . . 5 ⊢ 0 = (0g‘ℂfld) | |
5 | cndrng 20625 | . . . . 5 ⊢ ℂfld ∈ DivRing | |
6 | 3, 4, 5 | drngui 19995 | . . . 4 ⊢ (ℂ ∖ {0}) = (Unit‘ℂfld) |
7 | cnflddiv 20626 | . . . 4 ⊢ / = (/r‘ℂfld) | |
8 | cnfld1 20621 | . . . 4 ⊢ 1 = (1r‘ℂfld) | |
9 | eqid 2740 | . . . 4 ⊢ (invr‘ℂfld) = (invr‘ℂfld) | |
10 | 3, 6, 7, 8, 9 | ringinvdv 19934 | . . 3 ⊢ ((ℂfld ∈ Ring ∧ 𝑋 ∈ (ℂ ∖ {0})) → ((invr‘ℂfld)‘𝑋) = (1 / 𝑋)) |
11 | 2, 10 | mpan 687 | . 2 ⊢ (𝑋 ∈ (ℂ ∖ {0}) → ((invr‘ℂfld)‘𝑋) = (1 / 𝑋)) |
12 | 1, 11 | sylbir 234 | 1 ⊢ ((𝑋 ∈ ℂ ∧ 𝑋 ≠ 0) → ((invr‘ℂfld)‘𝑋) = (1 / 𝑋)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 396 = wceq 1542 ∈ wcel 2110 ≠ wne 2945 ∖ cdif 3889 {csn 4567 ‘cfv 6432 (class class class)co 7271 ℂcc 10870 0cc0 10872 1c1 10873 / cdiv 11632 Ringcrg 19781 invrcinvr 19911 ℂfldccnfld 20595 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1975 ax-7 2015 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2158 ax-12 2175 ax-ext 2711 ax-rep 5214 ax-sep 5227 ax-nul 5234 ax-pow 5292 ax-pr 5356 ax-un 7582 ax-cnex 10928 ax-resscn 10929 ax-1cn 10930 ax-icn 10931 ax-addcl 10932 ax-addrcl 10933 ax-mulcl 10934 ax-mulrcl 10935 ax-mulcom 10936 ax-addass 10937 ax-mulass 10938 ax-distr 10939 ax-i2m1 10940 ax-1ne0 10941 ax-1rid 10942 ax-rnegex 10943 ax-rrecex 10944 ax-cnre 10945 ax-pre-lttri 10946 ax-pre-lttrn 10947 ax-pre-ltadd 10948 ax-pre-mulgt0 10949 ax-addf 10951 ax-mulf 10952 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1545 df-fal 1555 df-ex 1787 df-nf 1791 df-sb 2072 df-mo 2542 df-eu 2571 df-clab 2718 df-cleq 2732 df-clel 2818 df-nfc 2891 df-ne 2946 df-nel 3052 df-ral 3071 df-rex 3072 df-reu 3073 df-rmo 3074 df-rab 3075 df-v 3433 df-sbc 3721 df-csb 3838 df-dif 3895 df-un 3897 df-in 3899 df-ss 3909 df-pss 3911 df-nul 4263 df-if 4466 df-pw 4541 df-sn 4568 df-pr 4570 df-tp 4572 df-op 4574 df-uni 4846 df-iun 4932 df-br 5080 df-opab 5142 df-mpt 5163 df-tr 5197 df-id 5490 df-eprel 5496 df-po 5504 df-so 5505 df-fr 5545 df-we 5547 df-xp 5596 df-rel 5597 df-cnv 5598 df-co 5599 df-dm 5600 df-rn 5601 df-res 5602 df-ima 5603 df-pred 6201 df-ord 6268 df-on 6269 df-lim 6270 df-suc 6271 df-iota 6390 df-fun 6434 df-fn 6435 df-f 6436 df-f1 6437 df-fo 6438 df-f1o 6439 df-fv 6440 df-riota 7228 df-ov 7274 df-oprab 7275 df-mpo 7276 df-om 7707 df-1st 7824 df-2nd 7825 df-tpos 8033 df-frecs 8088 df-wrecs 8119 df-recs 8193 df-rdg 8232 df-1o 8288 df-er 8481 df-en 8717 df-dom 8718 df-sdom 8719 df-fin 8720 df-pnf 11012 df-mnf 11013 df-xr 11014 df-ltxr 11015 df-le 11016 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-z 12320 df-dec 12437 df-uz 12582 df-fz 13239 df-struct 16846 df-sets 16863 df-slot 16881 df-ndx 16893 df-base 16911 df-ress 16940 df-plusg 16973 df-mulr 16974 df-starv 16975 df-tset 16979 df-ple 16980 df-ds 16982 df-unif 16983 df-0g 17150 df-mgm 18324 df-sgrp 18373 df-mnd 18384 df-grp 18578 df-minusg 18579 df-cmn 19386 df-mgp 19719 df-ur 19736 df-ring 19783 df-cring 19784 df-oppr 19860 df-dvdsr 19881 df-unit 19882 df-invr 19912 df-dvr 19923 df-drng 19991 df-cnfld 20596 |
This theorem is referenced by: cnmsubglem 20659 gzrngunit 20662 zringunit 20686 psgninv 20785 cphreccllem 24340 sum2dchr 26420 |
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