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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 2936 | . . 3 ⊢ ¬ 1 = 0 |
| 3 | oveq2 7364 | . . . . . 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 2791 | . . . . 5 ⊢ (i = 0 → 0 = (i · i)) |
| 7 | 6 | oveq1d 7371 | . . . 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 2797 | . . 3 ⊢ (i = 0 → 1 = 0) |
| 12 | 2, 11 | mto 198 | . 2 ⊢ ¬ i = 0 |
| 13 | 12 | neir 2937 | 1 ⊢ i ≠ 0 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1547 ≠ wne 2934 (class class class)co 7356 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 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2711 ax-sep 5218 ax-nul 5228 ax-pow 5294 ax-pr 5362 ax-un 7678 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 208 df-an 397 df-or 854 df-3or 1093 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2718 df-cleq 2731 df-clel 2814 df-nfc 2888 df-ne 2935 df-nel 3039 df-ral 3054 df-rex 3064 df-rab 3392 df-v 3433 df-sbc 3724 df-csb 3832 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-nul 4262 df-if 4455 df-pw 4531 df-sn 4556 df-pr 4558 df-op 4562 df-uni 4839 df-br 5073 df-opab 5135 df-mpt 5154 df-id 5513 df-po 5526 df-so 5527 df-xp 5624 df-rel 5625 df-cnv 5626 df-co 5627 df-dm 5628 df-rn 5629 df-res 5630 df-ima 5631 df-iota 6441 df-fun 6487 df-fn 6488 df-f 6489 df-f1 6490 df-fo 6491 df-f1o 6492 df-fv 6493 df-ov 7359 df-er 8633 df-en 8884 df-dom 8885 df-sdom 8886 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 25766 ibl0 25772 iblcnlem1 25773 itgcnlem 25775 iblss 25790 iblss2 25791 itgss 25797 itgeqa 25799 iblconst 25803 iblabsr 25815 iblmulc2 25816 itgsplit 25821 dvsincos 25966 efeq1 26510 tanregt0 26521 efif1olem4 26527 logi 26569 eflogeq 26584 cxpsqrtlem 26684 root1eq1 26737 ang180lem1 26791 ang180lem2 26792 ang180lem3 26793 atandm2 26859 2efiatan 26900 atantan 26905 dvatan 26917 atantayl2 26920 log2cnv 26926 ccfldextdgrr 33856 constrelextdg2 33931 iconstr 33950 constrrecl 33953 cos9thpiminplylem3 33968 itgexpif 34790 iexpire 35963 iblmulc2nc 38052 ftc1anclem6 38065 ef11d 42816 cxpi11d 42820 proot1ex 43641 iblsplit 46409 sinh-conventional 50229 |
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