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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 11098 | . . . 4 ⊢ 1 ≠ 0 | |
| 2 | 1 | neii 2935 | . . 3 ⊢ ¬ 1 = 0 |
| 3 | oveq2 7368 | . . . . . 6 ⊢ (i = 0 → (i · i) = (i · 0)) | |
| 4 | ax-icn 11088 | . . . . . . 7 ⊢ i ∈ ℂ | |
| 5 | 4 | mul01i 11327 | . . . . . 6 ⊢ (i · 0) = 0 |
| 6 | 3, 5 | eqtr2di 2789 | . . . . 5 ⊢ (i = 0 → 0 = (i · i)) |
| 7 | 6 | oveq1d 7375 | . . . 4 ⊢ (i = 0 → (0 + 1) = ((i · i) + 1)) |
| 8 | ax-1cn 11087 | . . . . 5 ⊢ 1 ∈ ℂ | |
| 9 | 8 | addlidi 11325 | . . . 4 ⊢ (0 + 1) = 1 |
| 10 | ax-i2m1 11097 | . . . 4 ⊢ ((i · i) + 1) = 0 | |
| 11 | 7, 9, 10 | 3eqtr3g 2795 | . . 3 ⊢ (i = 0 → 1 = 0) |
| 12 | 2, 11 | mto 197 | . 2 ⊢ ¬ i = 0 |
| 13 | 12 | neir 2936 | 1 ⊢ i ≠ 0 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1542 ≠ wne 2933 (class class class)co 7360 0cc0 11029 1c1 11030 ici 11031 + caddc 11032 · cmul 11034 |
| 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 5231 ax-nul 5241 ax-pow 5302 ax-pr 5370 ax-un 7682 ax-resscn 11086 ax-1cn 11087 ax-icn 11088 ax-addcl 11089 ax-addrcl 11090 ax-mulcl 11091 ax-mulrcl 11092 ax-mulcom 11093 ax-addass 11094 ax-mulass 11095 ax-distr 11096 ax-i2m1 11097 ax-1ne0 11098 ax-1rid 11099 ax-rnegex 11100 ax-rrecex 11101 ax-cnre 11102 ax-pre-lttri 11103 ax-pre-lttrn 11104 ax-pre-ltadd 11105 |
| 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-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-br 5087 df-opab 5149 df-mpt 5168 df-id 5519 df-po 5532 df-so 5533 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-res 5636 df-ima 5637 df-iota 6448 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 df-ov 7363 df-er 8636 df-en 8887 df-dom 8888 df-sdom 8889 df-pnf 11172 df-mnf 11173 df-ltxr 11175 |
| This theorem is referenced by: inelr 12140 2muline0 12393 irec 14154 iexpcyc 14160 imre 15061 reim 15062 crim 15068 cjreb 15076 cnpart 15193 tanval2 16091 tanval3 16092 efival 16110 sinhval 16112 retanhcl 16117 tanhlt1 16118 tanhbnd 16119 itgz 25758 ibl0 25764 iblcnlem1 25765 itgcnlem 25767 iblss 25782 iblss2 25783 itgss 25789 itgeqa 25791 iblconst 25795 iblabsr 25807 iblmulc2 25808 itgsplit 25813 dvsincos 25958 efeq1 26505 tanregt0 26516 efif1olem4 26522 logi 26564 eflogeq 26579 cxpsqrtlem 26679 root1eq1 26732 ang180lem1 26786 ang180lem2 26787 ang180lem3 26788 atandm2 26854 2efiatan 26895 atantan 26900 dvatan 26912 atantayl2 26915 log2cnv 26921 ccfldextdgrr 33832 constrelextdg2 33907 iconstr 33926 constrrecl 33929 cos9thpiminplylem3 33944 itgexpif 34766 iexpire 35933 iblmulc2nc 38020 ftc1anclem6 38033 ef11d 42785 cxpi11d 42789 proot1ex 43642 iblsplit 46412 sinh-conventional 50226 |
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