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Mirrors > Home > ILE Home > Th. List > adddir | GIF version |
Description: Distributive law for complex numbers (right-distributivity). (Contributed by NM, 10-Oct-2004.) |
Ref | Expression |
---|---|
adddir | ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → ((𝐴 + 𝐵) · 𝐶) = ((𝐴 · 𝐶) + (𝐵 · 𝐶))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | adddi 7906 | . . 3 ⊢ ((𝐶 ∈ ℂ ∧ 𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐶 · (𝐴 + 𝐵)) = ((𝐶 · 𝐴) + (𝐶 · 𝐵))) | |
2 | 1 | 3coml 1205 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → (𝐶 · (𝐴 + 𝐵)) = ((𝐶 · 𝐴) + (𝐶 · 𝐵))) |
3 | addcl 7899 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 + 𝐵) ∈ ℂ) | |
4 | mulcom 7903 | . . . 4 ⊢ (((𝐴 + 𝐵) ∈ ℂ ∧ 𝐶 ∈ ℂ) → ((𝐴 + 𝐵) · 𝐶) = (𝐶 · (𝐴 + 𝐵))) | |
5 | 3, 4 | sylan 281 | . . 3 ⊢ (((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) ∧ 𝐶 ∈ ℂ) → ((𝐴 + 𝐵) · 𝐶) = (𝐶 · (𝐴 + 𝐵))) |
6 | 5 | 3impa 1189 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → ((𝐴 + 𝐵) · 𝐶) = (𝐶 · (𝐴 + 𝐵))) |
7 | mulcom 7903 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐶 ∈ ℂ) → (𝐴 · 𝐶) = (𝐶 · 𝐴)) | |
8 | 7 | 3adant2 1011 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → (𝐴 · 𝐶) = (𝐶 · 𝐴)) |
9 | mulcom 7903 | . . . 4 ⊢ ((𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → (𝐵 · 𝐶) = (𝐶 · 𝐵)) | |
10 | 9 | 3adant1 1010 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → (𝐵 · 𝐶) = (𝐶 · 𝐵)) |
11 | 8, 10 | oveq12d 5871 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → ((𝐴 · 𝐶) + (𝐵 · 𝐶)) = ((𝐶 · 𝐴) + (𝐶 · 𝐵))) |
12 | 2, 6, 11 | 3eqtr4d 2213 | 1 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → ((𝐴 + 𝐵) · 𝐶) = ((𝐴 · 𝐶) + (𝐵 · 𝐶))) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ wa 103 ∧ w3a 973 = wceq 1348 ∈ wcel 2141 (class class class)co 5853 ℂcc 7772 + caddc 7777 · cmul 7779 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 704 ax-5 1440 ax-7 1441 ax-gen 1442 ax-ie1 1486 ax-ie2 1487 ax-8 1497 ax-10 1498 ax-11 1499 ax-i12 1500 ax-bndl 1502 ax-4 1503 ax-17 1519 ax-i9 1523 ax-ial 1527 ax-i5r 1528 ax-ext 2152 ax-addcl 7870 ax-mulcom 7875 ax-distr 7878 |
This theorem depends on definitions: df-bi 116 df-3an 975 df-tru 1351 df-nf 1454 df-sb 1756 df-clab 2157 df-cleq 2163 df-clel 2166 df-nfc 2301 df-rex 2454 df-v 2732 df-un 3125 df-sn 3589 df-pr 3590 df-op 3592 df-uni 3797 df-br 3990 df-iota 5160 df-fv 5206 df-ov 5856 |
This theorem is referenced by: mulid1 7917 adddiri 7931 adddird 7945 muladd11 8052 muladd 8303 demoivreALT 11736 dvds2ln 11786 dvds2add 11787 odd2np1lem 11831 sincosq1eq 13554 abssinper 13561 |
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