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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 11164 | . . . 4 ⊢ 1 ≠ 0 | |
| 2 | 1 | neii 2960 | . . 3 ⊢ ¬ 1 = 0 |
| 3 | oveq2 7418 | . . . . . 6 ⊢ (i = 0 → (i · i) = (i · 0)) | |
| 4 | ax-icn 11154 | . . . . . . 7 ⊢ i ∈ ℂ | |
| 5 | 4 | mul01i 11395 | . . . . . 6 ⊢ (i · 0) = 0 |
| 6 | 3, 5 | eqtr2di 2815 | . . . . 5 ⊢ (i = 0 → 0 = (i · i)) |
| 7 | 6 | oveq1d 7425 | . . . 4 ⊢ (i = 0 → (0 + 1) = ((i · i) + 1)) |
| 8 | ax-1cn 11153 | . . . . 5 ⊢ 1 ∈ ℂ | |
| 9 | 8 | addlidi 11393 | . . . 4 ⊢ (0 + 1) = 1 |
| 10 | ax-i2m1 11163 | . . . 4 ⊢ ((i · i) + 1) = 0 | |
| 11 | 7, 9, 10 | 3eqtr3g 2821 | . . 3 ⊢ (i = 0 → 1 = 0) |
| 12 | 2, 11 | mto 200 | . 2 ⊢ ¬ i = 0 |
| 13 | 12 | neir 2961 | 1 ⊢ i ≠ 0 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1570 ≠ wne 2958 (class class class)co 7410 0cc0 11095 1c1 11096 ici 11097 + caddc 11098 · cmul 11100 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-sep 5257 ax-nul 5269 ax-pow 5336 ax-pr 5404 ax-un 7732 ax-resscn 11152 ax-1cn 11153 ax-icn 11154 ax-addcl 11155 ax-addrcl 11156 ax-mulcl 11157 ax-mulrcl 11158 ax-mulcom 11159 ax-addass 11160 ax-mulass 11161 ax-distr 11162 ax-i2m1 11163 ax-1ne0 11164 ax-1rid 11165 ax-rnegex 11166 ax-rrecex 11167 ax-cnre 11168 ax-pre-lttri 11169 ax-pre-lttrn 11170 ax-pre-ltadd 11171 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-nel 3065 df-ral 3080 df-rex 3090 df-rab 3417 df-v 3457 df-sbc 3745 df-csb 3854 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-nul 4287 df-if 4488 df-pw 4564 df-sn 4590 df-pr 4592 df-op 4596 df-uni 4873 df-br 5110 df-opab 5174 df-mpt 5193 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 8690 df-en 8940 df-dom 8941 df-sdom 8942 df-pnf 11240 df-mnf 11241 df-ltxr 11243 |
| This theorem is referenced by: inelr 12203 2muline0 12464 irec 14233 iexpcyc 14239 imre 15155 reim 15156 crim 15162 cjreb 15170 cnpart 15287 tanval2 16184 tanval3 16185 efival 16203 sinhval 16205 retanhcl 16210 tanhlt1 16211 tanhbnd 16212 itgz 25940 ibl0 25946 iblcnlem1 25947 itgcnlem 25949 iblss 25964 iblss2 25965 itgss 25971 itgeqa 25973 iblconst 25977 iblabsr 25989 iblmulc2 25990 itgsplit 25995 dvsincos 26140 efeq1 26693 tanregt0 26704 efif1olem4 26710 logi 26752 eflogeq 26767 cxpsqrtlem 26867 root1eq1 26920 ang180lem1 26974 ang180lem2 26975 ang180lem3 26976 atandm2 27042 2efiatan 27083 atantan 27088 dvatan 27100 atantayl2 27103 log2cnv 27109 ccfldextdgrr 34062 constrelextdg2 34137 iconstr 34156 constrrecl 34159 cos9thpiminplylem3 34174 itgexpif 34993 iexpire 36227 iblmulc2nc 38336 ftc1anclem6 38349 ef11d 43100 cxpi11d 43104 proot1ex 43923 iblsplit 46680 sinh-conventional 50517 |
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