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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 8281 | . 2 ⊢ i ∈ ℂ | |
| 2 | negcl 8534 | . 2 ⊢ (i ∈ ℂ → -i ∈ ℂ) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ -i ∈ ℂ |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: ∈ wcel 2209 ℂcc 8184 ici 8188 -cneg 8506 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4251 ax-pow 4313 ax-pr 4348 ax-setind 4686 ax-resscn 8278 ax-1cn 8279 ax-icn 8281 ax-addcl 8282 ax-addrcl 8283 ax-mulcl 8284 ax-addcom 8286 ax-addass 8288 ax-distr 8290 ax-i2m1 8291 ax-0id 8294 ax-rnegex 8295 ax-cnre 8297 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-ral 2533 df-rex 2534 df-reu 2535 df-rab 2537 df-v 2823 df-sbc 3052 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-br 4132 df-opab 4194 df-id 4440 df-xp 4782 df-rel 4783 df-cnv 4784 df-co 4785 df-dm 4786 df-iota 5340 df-fun 5382 df-fv 5388 df-riota 6041 df-ov 6091 df-oprab 6092 df-mpo 6093 df-sub 8507 df-neg 8508 |
| This theorem is used by: irec 11098 imcl 11642 absimle 11874 recan 11899 sinval 12495 cosval 12496 sinf 12497 cosf 12498 tanval2ap 12506 tanval3ap 12507 efi4p 12510 sinneg 12519 cosneg 12520 efival 12525 sinadd 12529 cosadd 12530 sincn 16007 coscn 16008 sinperlem 16047 sineq0re 16088 |
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