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Mirrors > Home > MPE Home > Th. List > cnfld1 | Structured version Visualization version GIF version |
Description: One is the unit element of the field of complex numbers. (Contributed by Stefan O'Rear, 27-Nov-2014.) |
Ref | Expression |
---|---|
cnfld1 | ⊢ 1 = (1r‘ℂfld) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ax-1cn 10938 | . . . 4 ⊢ 1 ∈ ℂ | |
2 | mulid2 10983 | . . . . . 6 ⊢ (𝑥 ∈ ℂ → (1 · 𝑥) = 𝑥) | |
3 | mulid1 10982 | . . . . . 6 ⊢ (𝑥 ∈ ℂ → (𝑥 · 1) = 𝑥) | |
4 | 2, 3 | jca 512 | . . . . 5 ⊢ (𝑥 ∈ ℂ → ((1 · 𝑥) = 𝑥 ∧ (𝑥 · 1) = 𝑥)) |
5 | 4 | rgen 3075 | . . . 4 ⊢ ∀𝑥 ∈ ℂ ((1 · 𝑥) = 𝑥 ∧ (𝑥 · 1) = 𝑥) |
6 | 1, 5 | pm3.2i 471 | . . 3 ⊢ (1 ∈ ℂ ∧ ∀𝑥 ∈ ℂ ((1 · 𝑥) = 𝑥 ∧ (𝑥 · 1) = 𝑥)) |
7 | cnring 20629 | . . . 4 ⊢ ℂfld ∈ Ring | |
8 | cnfldbas 20610 | . . . . 5 ⊢ ℂ = (Base‘ℂfld) | |
9 | cnfldmul 20612 | . . . . 5 ⊢ · = (.r‘ℂfld) | |
10 | eqid 2739 | . . . . 5 ⊢ (1r‘ℂfld) = (1r‘ℂfld) | |
11 | 8, 9, 10 | isringid 19821 | . . . 4 ⊢ (ℂfld ∈ Ring → ((1 ∈ ℂ ∧ ∀𝑥 ∈ ℂ ((1 · 𝑥) = 𝑥 ∧ (𝑥 · 1) = 𝑥)) ↔ (1r‘ℂfld) = 1)) |
12 | 7, 11 | ax-mp 5 | . . 3 ⊢ ((1 ∈ ℂ ∧ ∀𝑥 ∈ ℂ ((1 · 𝑥) = 𝑥 ∧ (𝑥 · 1) = 𝑥)) ↔ (1r‘ℂfld) = 1) |
13 | 6, 12 | mpbi 229 | . 2 ⊢ (1r‘ℂfld) = 1 |
14 | 13 | eqcomi 2748 | 1 ⊢ 1 = (1r‘ℂfld) |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 205 ∧ wa 396 = wceq 1539 ∈ wcel 2107 ∀wral 3065 ‘cfv 6437 (class class class)co 7284 ℂcc 10878 1c1 10881 · cmul 10885 1rcur 19746 Ringcrg 19792 ℂfldccnfld 20606 |
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 1914 ax-6 1972 ax-7 2012 ax-8 2109 ax-9 2117 ax-10 2138 ax-11 2155 ax-12 2172 ax-ext 2710 ax-sep 5224 ax-nul 5231 ax-pow 5289 ax-pr 5353 ax-un 7597 ax-cnex 10936 ax-resscn 10937 ax-1cn 10938 ax-icn 10939 ax-addcl 10940 ax-addrcl 10941 ax-mulcl 10942 ax-mulrcl 10943 ax-mulcom 10944 ax-addass 10945 ax-mulass 10946 ax-distr 10947 ax-i2m1 10948 ax-1ne0 10949 ax-1rid 10950 ax-rnegex 10951 ax-rrecex 10952 ax-cnre 10953 ax-pre-lttri 10954 ax-pre-lttrn 10955 ax-pre-ltadd 10956 ax-pre-mulgt0 10957 ax-addf 10959 ax-mulf 10960 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2069 df-mo 2541 df-eu 2570 df-clab 2717 df-cleq 2731 df-clel 2817 df-nfc 2890 df-ne 2945 df-nel 3051 df-ral 3070 df-rex 3071 df-rmo 3072 df-reu 3073 df-rab 3074 df-v 3435 df-sbc 3718 df-csb 3834 df-dif 3891 df-un 3893 df-in 3895 df-ss 3905 df-pss 3907 df-nul 4258 df-if 4461 df-pw 4536 df-sn 4563 df-pr 4565 df-tp 4567 df-op 4569 df-uni 4841 df-iun 4927 df-br 5076 df-opab 5138 df-mpt 5159 df-tr 5193 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 6206 df-ord 6273 df-on 6274 df-lim 6275 df-suc 6276 df-iota 6395 df-fun 6439 df-fn 6440 df-f 6441 df-f1 6442 df-fo 6443 df-f1o 6444 df-fv 6445 df-riota 7241 df-ov 7287 df-oprab 7288 df-mpo 7289 df-om 7722 df-1st 7840 df-2nd 7841 df-frecs 8106 df-wrecs 8137 df-recs 8211 df-rdg 8250 df-1o 8306 df-er 8507 df-en 8743 df-dom 8744 df-sdom 8745 df-fin 8746 df-pnf 11020 df-mnf 11021 df-xr 11022 df-ltxr 11023 df-le 11024 df-sub 11216 df-neg 11217 df-nn 11983 df-2 12045 df-3 12046 df-4 12047 df-5 12048 df-6 12049 df-7 12050 df-8 12051 df-9 12052 df-n0 12243 df-z 12329 df-dec 12447 df-uz 12592 df-fz 13249 df-struct 16857 df-sets 16874 df-slot 16892 df-ndx 16904 df-base 16922 df-plusg 16984 df-mulr 16985 df-starv 16986 df-tset 16990 df-ple 16991 df-ds 16993 df-unif 16994 df-0g 17161 df-mgm 18335 df-sgrp 18384 df-mnd 18395 df-grp 18589 df-cmn 19397 df-mgp 19730 df-ur 19747 df-ring 19794 df-cring 19795 df-cnfld 20607 |
This theorem is referenced by: cndrng 20636 cnfldinv 20638 cnfldexp 20640 cnsubrglem 20657 cnsubdrglem 20658 zsssubrg 20665 cnmgpid 20669 gzrngunitlem 20672 expmhm 20676 nn0srg 20677 rge0srg 20678 zring1 20690 re1r 20827 clm1 24245 isclmp 24269 cnlmod 24312 cphsubrglem 24350 taylply2 25536 efsubm 25716 amgmlem 26148 amgm 26149 wilthlem2 26227 wilthlem3 26228 dchrelbas3 26395 dchrzrh1 26401 dchrmulcl 26406 dchrn0 26407 dchrinvcl 26410 dchrfi 26412 dchrabs 26417 sumdchr2 26427 rpvmasum2 26669 qrng1 26779 psgnid 31373 cnmsgn0g 31422 altgnsg 31425 xrge0slmod 31557 znfermltl 31571 iistmd 31861 xrge0iifmhm 31898 cnsrexpcl 40997 rngunsnply 41005 proot1ex 41033 amgmwlem 46517 amgmlemALT 46518 |
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