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Mirrors > Home > MPE Home > Th. List > ine0 | Structured version Visualization version GIF version |
Description: The imaginary unit i is not zero. (Contributed by NM, 6-May-1999.) |
Ref | Expression |
---|---|
ine0 | ⊢ i ≠ 0 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ax-1ne0 10595 | . . . 4 ⊢ 1 ≠ 0 | |
2 | 1 | neii 2989 | . . 3 ⊢ ¬ 1 = 0 |
3 | oveq2 7143 | . . . . . 6 ⊢ (i = 0 → (i · i) = (i · 0)) | |
4 | ax-icn 10585 | . . . . . . 7 ⊢ i ∈ ℂ | |
5 | 4 | mul01i 10819 | . . . . . 6 ⊢ (i · 0) = 0 |
6 | 3, 5 | eqtr2di 2850 | . . . . 5 ⊢ (i = 0 → 0 = (i · i)) |
7 | 6 | oveq1d 7150 | . . . 4 ⊢ (i = 0 → (0 + 1) = ((i · i) + 1)) |
8 | ax-1cn 10584 | . . . . 5 ⊢ 1 ∈ ℂ | |
9 | 8 | addid2i 10817 | . . . 4 ⊢ (0 + 1) = 1 |
10 | ax-i2m1 10594 | . . . 4 ⊢ ((i · i) + 1) = 0 | |
11 | 7, 9, 10 | 3eqtr3g 2856 | . . 3 ⊢ (i = 0 → 1 = 0) |
12 | 2, 11 | mto 200 | . 2 ⊢ ¬ i = 0 |
13 | 12 | neir 2990 | 1 ⊢ i ≠ 0 |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1538 ≠ wne 2987 (class class class)co 7135 0cc0 10526 1c1 10527 ici 10528 + caddc 10529 · cmul 10531 |
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-sep 5167 ax-nul 5174 ax-pow 5231 ax-pr 5295 ax-un 7441 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 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3or 1085 df-3an 1086 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-rab 3115 df-v 3443 df-sbc 3721 df-csb 3829 df-dif 3884 df-un 3886 df-in 3888 df-ss 3898 df-nul 4244 df-if 4426 df-pw 4499 df-sn 4526 df-pr 4528 df-op 4532 df-uni 4801 df-br 5031 df-opab 5093 df-mpt 5111 df-id 5425 df-po 5438 df-so 5439 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-iota 6283 df-fun 6326 df-fn 6327 df-f 6328 df-f1 6329 df-fo 6330 df-f1o 6331 df-fv 6332 df-ov 7138 df-er 8272 df-en 8493 df-dom 8494 df-sdom 8495 df-pnf 10666 df-mnf 10667 df-ltxr 10669 |
This theorem is referenced by: inelr 11615 2muline0 11849 irec 13560 iexpcyc 13565 imre 14459 reim 14460 crim 14466 cjreb 14474 cnpart 14591 tanval2 15478 tanval3 15479 efival 15497 sinhval 15499 retanhcl 15504 tanhlt1 15505 tanhbnd 15506 itgz 24384 ibl0 24390 iblcnlem1 24391 itgcnlem 24393 iblss 24408 iblss2 24409 itgss 24415 itgeqa 24417 iblconst 24421 iblabsr 24433 iblmulc2 24434 itgsplit 24439 dvsincos 24584 efeq1 25120 tanregt0 25131 efif1olem4 25137 eflogeq 25193 cxpsqrtlem 25293 root1eq1 25344 ang180lem1 25395 ang180lem2 25396 ang180lem3 25397 atandm2 25463 2efiatan 25504 atantan 25509 dvatan 25521 atantayl2 25524 log2cnv 25530 ccfldextdgrr 31145 itgexpif 31987 logi 33079 iexpire 33080 iblmulc2nc 35122 ftc1anclem6 35135 proot1ex 40145 iblsplit 42608 sinh-conventional 45265 |
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