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| Mirrors > Home > ILE Home > Th. List > negicn | GIF version | ||
| Description: -i is a complex number (common case). (Contributed by David A. Wheeler, 7-Dec-2018.) |
| Ref | Expression |
|---|---|
| negicn | ⊢ -i ∈ ℂ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ax-icn 8239 | . 2 ⊢ i ∈ ℂ | |
| 2 | negcl 8491 | . 2 ⊢ (i ∈ ℂ → -i ∈ ℂ) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ -i ∈ ℂ |
| Colors of variables: wff set class |
| Syntax hints: ∈ wcel 2205 ℂcc 8142 ici 8146 -cneg 8463 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-14 2208 ax-ext 2216 ax-sep 4234 ax-pow 4293 ax-pr 4328 ax-setind 4665 ax-resscn 8236 ax-1cn 8237 ax-icn 8239 ax-addcl 8240 ax-addrcl 8241 ax-mulcl 8242 ax-addcom 8244 ax-addass 8246 ax-distr 8248 ax-i2m1 8249 ax-0id 8252 ax-rnegex 8253 ax-cnre 8255 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1812 df-eu 2085 df-mo 2086 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ne 2415 df-ral 2527 df-rex 2528 df-reu 2529 df-rab 2531 df-v 2817 df-sbc 3046 df-dif 3216 df-un 3218 df-in 3220 df-ss 3227 df-pw 3677 df-sn 3701 df-pr 3702 df-op 3704 df-uni 3921 df-br 4116 df-opab 4178 df-id 4420 df-xp 4761 df-rel 4762 df-cnv 4763 df-co 4764 df-dm 4765 df-iota 5318 df-fun 5360 df-fv 5366 df-riota 6012 df-ov 6062 df-oprab 6063 df-mpo 6064 df-sub 8464 df-neg 8465 |
| This theorem is referenced by: irec 11029 imcl 11568 absimle 11799 recan 11824 sinval 12418 cosval 12419 sinf 12420 cosf 12421 tanval2ap 12429 tanval3ap 12430 efi4p 12433 sinneg 12442 cosneg 12443 efival 12448 sinadd 12452 cosadd 12453 sincn 15765 coscn 15766 sinperlem 15804 |
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