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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 11078 | . . . 4 ⊢ 1 ≠ 0 | |
| 2 | 1 | neii 2927 | . . 3 ⊢ ¬ 1 = 0 |
| 3 | oveq2 7357 | . . . . . 6 ⊢ (i = 0 → (i · i) = (i · 0)) | |
| 4 | ax-icn 11068 | . . . . . . 7 ⊢ i ∈ ℂ | |
| 5 | 4 | mul01i 11306 | . . . . . 6 ⊢ (i · 0) = 0 |
| 6 | 3, 5 | eqtr2di 2781 | . . . . 5 ⊢ (i = 0 → 0 = (i · i)) |
| 7 | 6 | oveq1d 7364 | . . . 4 ⊢ (i = 0 → (0 + 1) = ((i · i) + 1)) |
| 8 | ax-1cn 11067 | . . . . 5 ⊢ 1 ∈ ℂ | |
| 9 | 8 | addlidi 11304 | . . . 4 ⊢ (0 + 1) = 1 |
| 10 | ax-i2m1 11077 | . . . 4 ⊢ ((i · i) + 1) = 0 | |
| 11 | 7, 9, 10 | 3eqtr3g 2787 | . . 3 ⊢ (i = 0 → 1 = 0) |
| 12 | 2, 11 | mto 197 | . 2 ⊢ ¬ i = 0 |
| 13 | 12 | neir 2928 | 1 ⊢ i ≠ 0 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1540 ≠ wne 2925 (class class class)co 7349 0cc0 11009 1c1 11010 ici 11011 + caddc 11012 · cmul 11014 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-sep 5235 ax-nul 5245 ax-pow 5304 ax-pr 5371 ax-un 7671 ax-resscn 11066 ax-1cn 11067 ax-icn 11068 ax-addcl 11069 ax-addrcl 11070 ax-mulcl 11071 ax-mulrcl 11072 ax-mulcom 11073 ax-addass 11074 ax-mulass 11075 ax-distr 11076 ax-i2m1 11077 ax-1ne0 11078 ax-1rid 11079 ax-rnegex 11080 ax-rrecex 11081 ax-cnre 11082 ax-pre-lttri 11083 ax-pre-lttrn 11084 ax-pre-ltadd 11085 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-nel 3030 df-ral 3045 df-rex 3054 df-rab 3395 df-v 3438 df-sbc 3743 df-csb 3852 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-nul 4285 df-if 4477 df-pw 4553 df-sn 4578 df-pr 4580 df-op 4584 df-uni 4859 df-br 5093 df-opab 5155 df-mpt 5174 df-id 5514 df-po 5527 df-so 5528 df-xp 5625 df-rel 5626 df-cnv 5627 df-co 5628 df-dm 5629 df-rn 5630 df-res 5631 df-ima 5632 df-iota 6438 df-fun 6484 df-fn 6485 df-f 6486 df-f1 6487 df-fo 6488 df-f1o 6489 df-fv 6490 df-ov 7352 df-er 8625 df-en 8873 df-dom 8874 df-sdom 8875 df-pnf 11151 df-mnf 11152 df-ltxr 11154 |
| This theorem is referenced by: inelr 12118 2muline0 12349 irec 14108 iexpcyc 14114 imre 15015 reim 15016 crim 15022 cjreb 15030 cnpart 15147 tanval2 16042 tanval3 16043 efival 16061 sinhval 16063 retanhcl 16068 tanhlt1 16069 tanhbnd 16070 itgz 25680 ibl0 25686 iblcnlem1 25687 itgcnlem 25689 iblss 25704 iblss2 25705 itgss 25711 itgeqa 25713 iblconst 25717 iblabsr 25729 iblmulc2 25730 itgsplit 25735 dvsincos 25883 efeq1 26435 tanregt0 26446 efif1olem4 26452 logi 26494 eflogeq 26509 cxpsqrtlem 26609 root1eq1 26663 ang180lem1 26717 ang180lem2 26718 ang180lem3 26719 atandm2 26785 2efiatan 26826 atantan 26831 dvatan 26843 atantayl2 26846 log2cnv 26852 ccfldextdgrr 33645 constrelextdg2 33720 iconstr 33739 constrrecl 33742 cos9thpiminplylem3 33757 itgexpif 34580 iexpire 35718 iblmulc2nc 37675 ftc1anclem6 37688 ef11d 42322 cxpi11d 42326 proot1ex 43179 iblsplit 45957 sinh-conventional 49734 |
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