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Mirrors > Home > MPE Home > Th. List > cjneg | Structured version Visualization version GIF version |
Description: Complex conjugate of negative. (Contributed by NM, 27-Feb-2005.) (Revised by Mario Carneiro, 14-Jul-2014.) |
Ref | Expression |
---|---|
cjneg | ⊢ (𝐴 ∈ ℂ → (∗‘-𝐴) = -(∗‘𝐴)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | recl 14749 | . . . . 5 ⊢ (𝐴 ∈ ℂ → (ℜ‘𝐴) ∈ ℝ) | |
2 | 1 | recnd 10934 | . . . 4 ⊢ (𝐴 ∈ ℂ → (ℜ‘𝐴) ∈ ℂ) |
3 | ax-icn 10861 | . . . . 5 ⊢ i ∈ ℂ | |
4 | imcl 14750 | . . . . . 6 ⊢ (𝐴 ∈ ℂ → (ℑ‘𝐴) ∈ ℝ) | |
5 | 4 | recnd 10934 | . . . . 5 ⊢ (𝐴 ∈ ℂ → (ℑ‘𝐴) ∈ ℂ) |
6 | mulcl 10886 | . . . . 5 ⊢ ((i ∈ ℂ ∧ (ℑ‘𝐴) ∈ ℂ) → (i · (ℑ‘𝐴)) ∈ ℂ) | |
7 | 3, 5, 6 | sylancr 586 | . . . 4 ⊢ (𝐴 ∈ ℂ → (i · (ℑ‘𝐴)) ∈ ℂ) |
8 | 2, 7 | neg2subd 11279 | . . 3 ⊢ (𝐴 ∈ ℂ → (-(ℜ‘𝐴) − -(i · (ℑ‘𝐴))) = ((i · (ℑ‘𝐴)) − (ℜ‘𝐴))) |
9 | reneg 14764 | . . . 4 ⊢ (𝐴 ∈ ℂ → (ℜ‘-𝐴) = -(ℜ‘𝐴)) | |
10 | imneg 14772 | . . . . . 6 ⊢ (𝐴 ∈ ℂ → (ℑ‘-𝐴) = -(ℑ‘𝐴)) | |
11 | 10 | oveq2d 7271 | . . . . 5 ⊢ (𝐴 ∈ ℂ → (i · (ℑ‘-𝐴)) = (i · -(ℑ‘𝐴))) |
12 | mulneg2 11342 | . . . . . 6 ⊢ ((i ∈ ℂ ∧ (ℑ‘𝐴) ∈ ℂ) → (i · -(ℑ‘𝐴)) = -(i · (ℑ‘𝐴))) | |
13 | 3, 5, 12 | sylancr 586 | . . . . 5 ⊢ (𝐴 ∈ ℂ → (i · -(ℑ‘𝐴)) = -(i · (ℑ‘𝐴))) |
14 | 11, 13 | eqtrd 2778 | . . . 4 ⊢ (𝐴 ∈ ℂ → (i · (ℑ‘-𝐴)) = -(i · (ℑ‘𝐴))) |
15 | 9, 14 | oveq12d 7273 | . . 3 ⊢ (𝐴 ∈ ℂ → ((ℜ‘-𝐴) − (i · (ℑ‘-𝐴))) = (-(ℜ‘𝐴) − -(i · (ℑ‘𝐴)))) |
16 | 2, 7 | negsubdi2d 11278 | . . 3 ⊢ (𝐴 ∈ ℂ → -((ℜ‘𝐴) − (i · (ℑ‘𝐴))) = ((i · (ℑ‘𝐴)) − (ℜ‘𝐴))) |
17 | 8, 15, 16 | 3eqtr4d 2788 | . 2 ⊢ (𝐴 ∈ ℂ → ((ℜ‘-𝐴) − (i · (ℑ‘-𝐴))) = -((ℜ‘𝐴) − (i · (ℑ‘𝐴)))) |
18 | negcl 11151 | . . 3 ⊢ (𝐴 ∈ ℂ → -𝐴 ∈ ℂ) | |
19 | remim 14756 | . . 3 ⊢ (-𝐴 ∈ ℂ → (∗‘-𝐴) = ((ℜ‘-𝐴) − (i · (ℑ‘-𝐴)))) | |
20 | 18, 19 | syl 17 | . 2 ⊢ (𝐴 ∈ ℂ → (∗‘-𝐴) = ((ℜ‘-𝐴) − (i · (ℑ‘-𝐴)))) |
21 | remim 14756 | . . 3 ⊢ (𝐴 ∈ ℂ → (∗‘𝐴) = ((ℜ‘𝐴) − (i · (ℑ‘𝐴)))) | |
22 | 21 | negeqd 11145 | . 2 ⊢ (𝐴 ∈ ℂ → -(∗‘𝐴) = -((ℜ‘𝐴) − (i · (ℑ‘𝐴)))) |
23 | 17, 20, 22 | 3eqtr4d 2788 | 1 ⊢ (𝐴 ∈ ℂ → (∗‘-𝐴) = -(∗‘𝐴)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1539 ∈ wcel 2108 ‘cfv 6418 (class class class)co 7255 ℂcc 10800 ici 10804 · cmul 10807 − cmin 11135 -cneg 11136 ∗ccj 14735 ℜcre 14736 ℑcim 14737 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 ax-resscn 10859 ax-1cn 10860 ax-icn 10861 ax-addcl 10862 ax-addrcl 10863 ax-mulcl 10864 ax-mulrcl 10865 ax-mulcom 10866 ax-addass 10867 ax-mulass 10868 ax-distr 10869 ax-i2m1 10870 ax-1ne0 10871 ax-1rid 10872 ax-rnegex 10873 ax-rrecex 10874 ax-cnre 10875 ax-pre-lttri 10876 ax-pre-lttrn 10877 ax-pre-ltadd 10878 ax-pre-mulgt0 10879 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-nel 3049 df-ral 3068 df-rex 3069 df-reu 3070 df-rmo 3071 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-op 4565 df-uni 4837 df-br 5071 df-opab 5133 df-mpt 5154 df-id 5480 df-po 5494 df-so 5495 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-riota 7212 df-ov 7258 df-oprab 7259 df-mpo 7260 df-er 8456 df-en 8692 df-dom 8693 df-sdom 8694 df-pnf 10942 df-mnf 10943 df-xr 10944 df-ltxr 10945 df-le 10946 df-sub 11137 df-neg 11138 df-div 11563 df-2 11966 df-cj 14738 df-re 14739 df-im 14740 |
This theorem is referenced by: cjsub 14788 cjnegi 14821 cjnegd 14850 absneg 14917 |
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