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Mirrors > Home > MPE Home > Th. List > ipcnval | Structured version Visualization version GIF version |
Description: Standard inner product on complex numbers. (Contributed by NM, 29-Jul-1999.) (Revised by Mario Carneiro, 14-Jul-2014.) |
Ref | Expression |
---|---|
ipcnval | ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (ℜ‘(𝐴 · (∗‘𝐵))) = (((ℜ‘𝐴) · (ℜ‘𝐵)) + ((ℑ‘𝐴) · (ℑ‘𝐵)))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cjcl 14525 | . . 3 ⊢ (𝐵 ∈ ℂ → (∗‘𝐵) ∈ ℂ) | |
2 | remul 14549 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ (∗‘𝐵) ∈ ℂ) → (ℜ‘(𝐴 · (∗‘𝐵))) = (((ℜ‘𝐴) · (ℜ‘(∗‘𝐵))) − ((ℑ‘𝐴) · (ℑ‘(∗‘𝐵))))) | |
3 | 1, 2 | sylan2 595 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (ℜ‘(𝐴 · (∗‘𝐵))) = (((ℜ‘𝐴) · (ℜ‘(∗‘𝐵))) − ((ℑ‘𝐴) · (ℑ‘(∗‘𝐵))))) |
4 | recj 14544 | . . . . 5 ⊢ (𝐵 ∈ ℂ → (ℜ‘(∗‘𝐵)) = (ℜ‘𝐵)) | |
5 | 4 | adantl 485 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (ℜ‘(∗‘𝐵)) = (ℜ‘𝐵)) |
6 | 5 | oveq2d 7172 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((ℜ‘𝐴) · (ℜ‘(∗‘𝐵))) = ((ℜ‘𝐴) · (ℜ‘𝐵))) |
7 | imcj 14552 | . . . . . 6 ⊢ (𝐵 ∈ ℂ → (ℑ‘(∗‘𝐵)) = -(ℑ‘𝐵)) | |
8 | 7 | adantl 485 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (ℑ‘(∗‘𝐵)) = -(ℑ‘𝐵)) |
9 | 8 | oveq2d 7172 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((ℑ‘𝐴) · (ℑ‘(∗‘𝐵))) = ((ℑ‘𝐴) · -(ℑ‘𝐵))) |
10 | imcl 14531 | . . . . . 6 ⊢ (𝐴 ∈ ℂ → (ℑ‘𝐴) ∈ ℝ) | |
11 | 10 | recnd 10720 | . . . . 5 ⊢ (𝐴 ∈ ℂ → (ℑ‘𝐴) ∈ ℂ) |
12 | imcl 14531 | . . . . . 6 ⊢ (𝐵 ∈ ℂ → (ℑ‘𝐵) ∈ ℝ) | |
13 | 12 | recnd 10720 | . . . . 5 ⊢ (𝐵 ∈ ℂ → (ℑ‘𝐵) ∈ ℂ) |
14 | mulneg2 11128 | . . . . 5 ⊢ (((ℑ‘𝐴) ∈ ℂ ∧ (ℑ‘𝐵) ∈ ℂ) → ((ℑ‘𝐴) · -(ℑ‘𝐵)) = -((ℑ‘𝐴) · (ℑ‘𝐵))) | |
15 | 11, 13, 14 | syl2an 598 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((ℑ‘𝐴) · -(ℑ‘𝐵)) = -((ℑ‘𝐴) · (ℑ‘𝐵))) |
16 | 9, 15 | eqtrd 2793 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((ℑ‘𝐴) · (ℑ‘(∗‘𝐵))) = -((ℑ‘𝐴) · (ℑ‘𝐵))) |
17 | 6, 16 | oveq12d 7174 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (((ℜ‘𝐴) · (ℜ‘(∗‘𝐵))) − ((ℑ‘𝐴) · (ℑ‘(∗‘𝐵)))) = (((ℜ‘𝐴) · (ℜ‘𝐵)) − -((ℑ‘𝐴) · (ℑ‘𝐵)))) |
18 | recl 14530 | . . . . 5 ⊢ (𝐴 ∈ ℂ → (ℜ‘𝐴) ∈ ℝ) | |
19 | 18 | recnd 10720 | . . . 4 ⊢ (𝐴 ∈ ℂ → (ℜ‘𝐴) ∈ ℂ) |
20 | recl 14530 | . . . . 5 ⊢ (𝐵 ∈ ℂ → (ℜ‘𝐵) ∈ ℝ) | |
21 | 20 | recnd 10720 | . . . 4 ⊢ (𝐵 ∈ ℂ → (ℜ‘𝐵) ∈ ℂ) |
22 | mulcl 10672 | . . . 4 ⊢ (((ℜ‘𝐴) ∈ ℂ ∧ (ℜ‘𝐵) ∈ ℂ) → ((ℜ‘𝐴) · (ℜ‘𝐵)) ∈ ℂ) | |
23 | 19, 21, 22 | syl2an 598 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((ℜ‘𝐴) · (ℜ‘𝐵)) ∈ ℂ) |
24 | mulcl 10672 | . . . 4 ⊢ (((ℑ‘𝐴) ∈ ℂ ∧ (ℑ‘𝐵) ∈ ℂ) → ((ℑ‘𝐴) · (ℑ‘𝐵)) ∈ ℂ) | |
25 | 11, 13, 24 | syl2an 598 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((ℑ‘𝐴) · (ℑ‘𝐵)) ∈ ℂ) |
26 | 23, 25 | subnegd 11055 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (((ℜ‘𝐴) · (ℜ‘𝐵)) − -((ℑ‘𝐴) · (ℑ‘𝐵))) = (((ℜ‘𝐴) · (ℜ‘𝐵)) + ((ℑ‘𝐴) · (ℑ‘𝐵)))) |
27 | 3, 17, 26 | 3eqtrd 2797 | 1 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (ℜ‘(𝐴 · (∗‘𝐵))) = (((ℜ‘𝐴) · (ℜ‘𝐵)) + ((ℑ‘𝐴) · (ℑ‘𝐵)))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 399 = wceq 1538 ∈ wcel 2111 ‘cfv 6340 (class class class)co 7156 ℂcc 10586 + caddc 10591 · cmul 10593 − cmin 10921 -cneg 10922 ∗ccj 14516 ℜcre 14517 ℑcim 14518 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2729 ax-sep 5173 ax-nul 5180 ax-pow 5238 ax-pr 5302 ax-un 7465 ax-resscn 10645 ax-1cn 10646 ax-icn 10647 ax-addcl 10648 ax-addrcl 10649 ax-mulcl 10650 ax-mulrcl 10651 ax-mulcom 10652 ax-addass 10653 ax-mulass 10654 ax-distr 10655 ax-i2m1 10656 ax-1ne0 10657 ax-1rid 10658 ax-rnegex 10659 ax-rrecex 10660 ax-cnre 10661 ax-pre-lttri 10662 ax-pre-lttrn 10663 ax-pre-ltadd 10664 ax-pre-mulgt0 10665 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3or 1085 df-3an 1086 df-tru 1541 df-fal 1551 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2557 df-eu 2588 df-clab 2736 df-cleq 2750 df-clel 2830 df-nfc 2901 df-ne 2952 df-nel 3056 df-ral 3075 df-rex 3076 df-reu 3077 df-rmo 3078 df-rab 3079 df-v 3411 df-sbc 3699 df-csb 3808 df-dif 3863 df-un 3865 df-in 3867 df-ss 3877 df-nul 4228 df-if 4424 df-pw 4499 df-sn 4526 df-pr 4528 df-op 4532 df-uni 4802 df-br 5037 df-opab 5099 df-mpt 5117 df-id 5434 df-po 5447 df-so 5448 df-xp 5534 df-rel 5535 df-cnv 5536 df-co 5537 df-dm 5538 df-rn 5539 df-res 5540 df-ima 5541 df-iota 6299 df-fun 6342 df-fn 6343 df-f 6344 df-f1 6345 df-fo 6346 df-f1o 6347 df-fv 6348 df-riota 7114 df-ov 7159 df-oprab 7160 df-mpo 7161 df-er 8305 df-en 8541 df-dom 8542 df-sdom 8543 df-pnf 10728 df-mnf 10729 df-xr 10730 df-ltxr 10731 df-le 10732 df-sub 10923 df-neg 10924 df-div 11349 df-2 11750 df-cj 14519 df-re 14520 df-im 14521 |
This theorem is referenced by: cjmulval 14565 ipcni 14610 ipcnd 14642 |
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