Mathbox for Saveliy Skresanov |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > sigarmf | Structured version Visualization version GIF version |
Description: Signed area is additive (with respect to subtraction) by the first argument. (Contributed by Saveliy Skresanov, 19-Sep-2017.) |
Ref | Expression |
---|---|
sigar | ⊢ 𝐺 = (𝑥 ∈ ℂ, 𝑦 ∈ ℂ ↦ (ℑ‘((∗‘𝑥) · 𝑦))) |
Ref | Expression |
---|---|
sigarmf | ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → ((𝐴 − 𝐶)𝐺𝐵) = ((𝐴𝐺𝐵) − (𝐶𝐺𝐵))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cjsub 14788 | . . . . . . 7 ⊢ ((𝐴 ∈ ℂ ∧ 𝐶 ∈ ℂ) → (∗‘(𝐴 − 𝐶)) = ((∗‘𝐴) − (∗‘𝐶))) | |
2 | 1 | oveq1d 7270 | . . . . . 6 ⊢ ((𝐴 ∈ ℂ ∧ 𝐶 ∈ ℂ) → ((∗‘(𝐴 − 𝐶)) · 𝐵) = (((∗‘𝐴) − (∗‘𝐶)) · 𝐵)) |
3 | 2 | 3adant2 1129 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → ((∗‘(𝐴 − 𝐶)) · 𝐵) = (((∗‘𝐴) − (∗‘𝐶)) · 𝐵)) |
4 | simp1 1134 | . . . . . . 7 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → 𝐴 ∈ ℂ) | |
5 | 4 | cjcld 14835 | . . . . . 6 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → (∗‘𝐴) ∈ ℂ) |
6 | simp3 1136 | . . . . . . 7 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → 𝐶 ∈ ℂ) | |
7 | 6 | cjcld 14835 | . . . . . 6 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → (∗‘𝐶) ∈ ℂ) |
8 | simp2 1135 | . . . . . 6 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → 𝐵 ∈ ℂ) | |
9 | 5, 7, 8 | subdird 11362 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → (((∗‘𝐴) − (∗‘𝐶)) · 𝐵) = (((∗‘𝐴) · 𝐵) − ((∗‘𝐶) · 𝐵))) |
10 | 3, 9 | eqtrd 2778 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → ((∗‘(𝐴 − 𝐶)) · 𝐵) = (((∗‘𝐴) · 𝐵) − ((∗‘𝐶) · 𝐵))) |
11 | 10 | fveq2d 6760 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → (ℑ‘((∗‘(𝐴 − 𝐶)) · 𝐵)) = (ℑ‘(((∗‘𝐴) · 𝐵) − ((∗‘𝐶) · 𝐵)))) |
12 | 5, 8 | mulcld 10926 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → ((∗‘𝐴) · 𝐵) ∈ ℂ) |
13 | 7, 8 | mulcld 10926 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → ((∗‘𝐶) · 𝐵) ∈ ℂ) |
14 | 12, 13 | imsubd 14856 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → (ℑ‘(((∗‘𝐴) · 𝐵) − ((∗‘𝐶) · 𝐵))) = ((ℑ‘((∗‘𝐴) · 𝐵)) − (ℑ‘((∗‘𝐶) · 𝐵)))) |
15 | 11, 14 | eqtrd 2778 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → (ℑ‘((∗‘(𝐴 − 𝐶)) · 𝐵)) = ((ℑ‘((∗‘𝐴) · 𝐵)) − (ℑ‘((∗‘𝐶) · 𝐵)))) |
16 | 4, 6 | subcld 11262 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → (𝐴 − 𝐶) ∈ ℂ) |
17 | sigar | . . . 4 ⊢ 𝐺 = (𝑥 ∈ ℂ, 𝑦 ∈ ℂ ↦ (ℑ‘((∗‘𝑥) · 𝑦))) | |
18 | 17 | sigarval 44253 | . . 3 ⊢ (((𝐴 − 𝐶) ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 − 𝐶)𝐺𝐵) = (ℑ‘((∗‘(𝐴 − 𝐶)) · 𝐵))) |
19 | 16, 8, 18 | syl2anc 583 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → ((𝐴 − 𝐶)𝐺𝐵) = (ℑ‘((∗‘(𝐴 − 𝐶)) · 𝐵))) |
20 | 17 | sigarval 44253 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴𝐺𝐵) = (ℑ‘((∗‘𝐴) · 𝐵))) |
21 | 20 | 3adant3 1130 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → (𝐴𝐺𝐵) = (ℑ‘((∗‘𝐴) · 𝐵))) |
22 | 3simpc 1148 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → (𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ)) | |
23 | 22 | ancomd 461 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → (𝐶 ∈ ℂ ∧ 𝐵 ∈ ℂ)) |
24 | 17 | sigarval 44253 | . . . 4 ⊢ ((𝐶 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐶𝐺𝐵) = (ℑ‘((∗‘𝐶) · 𝐵))) |
25 | 23, 24 | syl 17 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → (𝐶𝐺𝐵) = (ℑ‘((∗‘𝐶) · 𝐵))) |
26 | 21, 25 | oveq12d 7273 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → ((𝐴𝐺𝐵) − (𝐶𝐺𝐵)) = ((ℑ‘((∗‘𝐴) · 𝐵)) − (ℑ‘((∗‘𝐶) · 𝐵)))) |
27 | 15, 19, 26 | 3eqtr4d 2788 | 1 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → ((𝐴 − 𝐶)𝐺𝐵) = ((𝐴𝐺𝐵) − (𝐶𝐺𝐵))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 395 ∧ w3a 1085 = wceq 1539 ∈ wcel 2108 ‘cfv 6418 (class class class)co 7255 ∈ cmpo 7257 ℂcc 10800 · cmul 10807 − cmin 11135 ∗ccj 14735 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: sigarms 44259 sigarexp 44262 sigaradd 44269 |
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