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| Mirrors > Home > ILE Home > Th. List > adddid | GIF version | ||
| Description: Distributive law (left-distributivity). (Contributed by Mario Carneiro, 27-May-2016.) |
| Ref | Expression |
|---|---|
| addcld.1 | ⊢ (𝜑 → 𝐴 ∈ ℂ) |
| addcld.2 | ⊢ (𝜑 → 𝐵 ∈ ℂ) |
| addassd.3 | ⊢ (𝜑 → 𝐶 ∈ ℂ) |
| Ref | Expression |
|---|---|
| adddid | ⊢ (𝜑 → (𝐴 · (𝐵 + 𝐶)) = ((𝐴 · 𝐵) + (𝐴 · 𝐶))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | addcld.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℂ) | |
| 2 | addcld.2 | . 2 ⊢ (𝜑 → 𝐵 ∈ ℂ) | |
| 3 | addassd.3 | . 2 ⊢ (𝜑 → 𝐶 ∈ ℂ) | |
| 4 | adddi 8311 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ) → (𝐴 · (𝐵 + 𝐶)) = ((𝐴 · 𝐵) + (𝐴 · 𝐶))) | |
| 5 | 1, 2, 3, 4 | syl3anc 1278 | 1 ⊢ (𝜑 → (𝐴 · (𝐵 + 𝐶)) = ((𝐴 · 𝐵) + (𝐴 · 𝐶))) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 = wceq 1402 ∈ wcel 2209 (class class class)co 6085 ℂcc 8177 + caddc 8182 · cmul 8184 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-distr 8283 |
| This proof depends on definitions: df-bi 117 df-3an 1011 |
| This theorem is used by: subdi 8712 mulreim 8933 apadd1 8937 conjmulap 9060 cju 9292 flhalf 10739 modqcyc 10798 addmodlteq 10837 binom2 11090 binom3 11096 sqoddm1div8 11133 bcpasc 11206 hashf1lem2 11288 remim 11627 mulreap 11631 readd 11636 remullem 11638 imadd 11644 cjadd 11651 bdtrilem 12007 fsummulc2 12217 binomlem 12252 tanval3ap 12483 sinadd 12505 tanaddap 12508 bezoutlemnewy 12775 dvdsmulgcd 12804 lcmgcdlem 12857 pythagtriplem1 13046 pcaddlem 13120 mul4sqlem 13174 tangtx 15942 rpmulcxp 16017 rpcxpmul2 16021 binom4 16087 lgseisenlem2 16202 2lgsoddprmlem2 16237 2sqlem4 16249 2sqlem8 16254 |
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