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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 11136 | . . . 4 ⊢ 1 ≠ 0 | |
| 2 | 1 | neii 2958 | . . 3 ⊢ ¬ 1 = 0 |
| 3 | oveq2 7399 | . . . . . 6 ⊢ (i = 0 → (i · i) = (i · 0)) | |
| 4 | ax-icn 11126 | . . . . . . 7 ⊢ i ∈ ℂ | |
| 5 | 4 | mul01i 11367 | . . . . . 6 ⊢ (i · 0) = 0 |
| 6 | 3, 5 | eqtr2di 2813 | . . . . 5 ⊢ (i = 0 → 0 = (i · i)) |
| 7 | 6 | oveq1d 7406 | . . . 4 ⊢ (i = 0 → (0 + 1) = ((i · i) + 1)) |
| 8 | ax-1cn 11125 | . . . . 5 ⊢ 1 ∈ ℂ | |
| 9 | 8 | addlidi 11365 | . . . 4 ⊢ (0 + 1) = 1 |
| 10 | ax-i2m1 11135 | . . . 4 ⊢ ((i · i) + 1) = 0 | |
| 11 | 7, 9, 10 | 3eqtr3g 2819 | . . 3 ⊢ (i = 0 → 1 = 0) |
| 12 | 2, 11 | mto 199 | . 2 ⊢ ¬ i = 0 |
| 13 | 12 | neir 2959 | 1 ⊢ i ≠ 0 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1559 ≠ wne 2956 (class class class)co 7391 0cc0 11067 1c1 11068 ici 11069 + caddc 11070 · cmul 11072 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-10 2174 ax-11 2190 ax-12 2211 ax-ext 2733 ax-sep 5243 ax-nul 5253 ax-pow 5319 ax-pr 5387 ax-un 7713 ax-resscn 11124 ax-1cn 11125 ax-icn 11126 ax-addcl 11127 ax-addrcl 11128 ax-mulcl 11129 ax-mulrcl 11130 ax-mulcom 11131 ax-addass 11132 ax-mulass 11133 ax-distr 11134 ax-i2m1 11135 ax-1ne0 11136 ax-1rid 11137 ax-rnegex 11138 ax-rrecex 11139 ax-cnre 11140 ax-pre-lttri 11141 ax-pre-lttrn 11142 ax-pre-ltadd 11143 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1098 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-nf 1803 df-sb 2090 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3061 df-ral 3076 df-rex 3086 df-rab 3414 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4284 df-if 4478 df-pw 4554 df-sn 4580 df-pr 4582 df-op 4586 df-uni 4863 df-br 5098 df-opab 5160 df-mpt 5179 df-id 5538 df-po 5551 df-so 5552 df-xp 5649 df-rel 5650 df-cnv 5651 df-co 5652 df-dm 5653 df-rn 5654 df-res 5655 df-ima 5656 df-iota 6472 df-fun 6518 df-fn 6519 df-f 6520 df-f1 6521 df-fo 6522 df-f1o 6523 df-fv 6524 df-ov 7394 df-er 8672 df-en 8922 df-dom 8923 df-sdom 8924 df-pnf 11212 df-mnf 11213 df-ltxr 11215 |
| This theorem is referenced by: inelr 12179 2muline0 12440 irec 14208 iexpcyc 14214 imre 15126 reim 15127 crim 15133 cjreb 15141 cnpart 15258 tanval2 16156 tanval3 16157 efival 16175 sinhval 16177 retanhcl 16182 tanhlt1 16183 tanhbnd 16184 itgz 25831 ibl0 25837 iblcnlem1 25838 itgcnlem 25840 iblss 25855 iblss2 25856 itgss 25862 itgeqa 25864 iblconst 25868 iblabsr 25880 iblmulc2 25881 itgsplit 25886 dvsincos 26031 efeq1 26581 tanregt0 26592 efif1olem4 26598 logi 26640 eflogeq 26655 cxpsqrtlem 26755 root1eq1 26808 ang180lem1 26862 ang180lem2 26863 ang180lem3 26864 atandm2 26930 2efiatan 26971 atantan 26976 dvatan 26988 atantayl2 26991 log2cnv 26997 ccfldextdgrr 33930 constrelextdg2 34005 iconstr 34024 constrrecl 34027 cos9thpiminplylem3 34042 itgexpif 34861 iexpire 36046 iblmulc2nc 38145 ftc1anclem6 38158 ef11d 42909 cxpi11d 42913 proot1ex 43734 iblsplit 46501 sinh-conventional 50321 |
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