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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 11168 | . . . 4 ⊢ 1 ≠ 0 | |
| 2 | 1 | neii 2958 | . . 3 ⊢ ¬ 1 = 0 |
| 3 | oveq2 7418 | . . . . . 6 ⊢ (i = 0 → (i · i) = (i · 0)) | |
| 4 | ax-icn 11158 | . . . . . . 7 ⊢ i ∈ ℂ | |
| 5 | 4 | mul01i 11399 | . . . . . 6 ⊢ (i · 0) = 0 |
| 6 | 3, 5 | eqtr2di 2813 | . . . . 5 ⊢ (i = 0 → 0 = (i · i)) |
| 7 | 6 | oveq1d 7425 | . . . 4 ⊢ (i = 0 → (0 + 1) = ((i · i) + 1)) |
| 8 | ax-1cn 11157 | . . . . 5 ⊢ 1 ∈ ℂ | |
| 9 | 8 | addlidi 11397 | . . . 4 ⊢ (0 + 1) = 1 |
| 10 | ax-i2m1 11167 | . . . 4 ⊢ ((i · i) + 1) = 0 | |
| 11 | 7, 9, 10 | 3eqtr3g 2819 | . . 3 ⊢ (i = 0 → 1 = 0) |
| 12 | 2, 11 | mto 200 | . 2 ⊢ ¬ i = 0 |
| 13 | 12 | neir 2959 | 1 ⊢ i ≠ 0 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1568 ≠ wne 2956 (class class class)co 7410 0cc0 11099 1c1 11100 ici 11101 + caddc 11102 · cmul 11104 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1823 ax-4 1837 ax-5 1938 ax-6 1995 ax-7 2036 ax-8 2143 ax-9 2151 ax-10 2174 ax-11 2190 ax-12 2211 ax-ext 2733 ax-sep 5256 ax-nul 5268 ax-pow 5336 ax-pr 5404 ax-un 7732 ax-resscn 11156 ax-1cn 11157 ax-icn 11158 ax-addcl 11159 ax-addrcl 11160 ax-mulcl 11161 ax-mulrcl 11162 ax-mulcom 11163 ax-addass 11164 ax-mulass 11165 ax-distr 11166 ax-i2m1 11167 ax-1ne0 11168 ax-1rid 11169 ax-rnegex 11170 ax-rrecex 11171 ax-cnre 11172 ax-pre-lttri 11173 ax-pre-lttrn 11174 ax-pre-ltadd 11175 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1571 df-fal 1581 df-ex 1808 df-nf 1812 df-sb 2095 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3063 df-ral 3078 df-rex 3088 df-rab 3415 df-v 3455 df-sbc 3744 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-nul 4286 df-if 4487 df-pw 4563 df-sn 4589 df-pr 4591 df-op 4595 df-uni 4872 df-br 5109 df-opab 5173 df-mpt 5192 df-id 5556 df-po 5569 df-so 5570 df-xp 5667 df-rel 5668 df-cnv 5669 df-co 5670 df-dm 5671 df-rn 5672 df-res 5673 df-ima 5674 df-iota 6492 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-ov 7413 df-er 8693 df-en 8943 df-dom 8944 df-sdom 8945 df-pnf 11244 df-mnf 11245 df-ltxr 11247 |
| This theorem is referenced by: inelr 12207 2muline0 12468 irec 14236 iexpcyc 14242 imre 15158 reim 15159 crim 15165 cjreb 15173 cnpart 15290 tanval2 16188 tanval3 16189 efival 16207 sinhval 16209 retanhcl 16214 tanhlt1 16215 tanhbnd 16216 itgz 25919 ibl0 25925 iblcnlem1 25926 itgcnlem 25928 iblss 25943 iblss2 25944 itgss 25950 itgeqa 25952 iblconst 25956 iblabsr 25968 iblmulc2 25969 itgsplit 25974 dvsincos 26119 efeq1 26669 tanregt0 26680 efif1olem4 26686 logi 26728 eflogeq 26743 cxpsqrtlem 26843 root1eq1 26896 ang180lem1 26950 ang180lem2 26951 ang180lem3 26952 atandm2 27018 2efiatan 27059 atantan 27064 dvatan 27076 atantayl2 27079 log2cnv 27085 ccfldextdgrr 34028 constrelextdg2 34103 iconstr 34122 constrrecl 34125 cos9thpiminplylem3 34140 itgexpif 34959 iexpire 36181 iblmulc2nc 38280 ftc1anclem6 38293 ef11d 43046 cxpi11d 43050 proot1ex 43871 iblsplit 46628 sinh-conventional 50462 |
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