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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 8318 | . 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 6088 ℂcc 8184 + caddc 8189 · cmul 8191 |
| 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 8290 |
| This proof depends on definitions: df-bi 117 df-3an 1011 |
| This theorem is used by: subdi 8720 mulreim 8941 apadd1 8945 conjmulap 9068 cju 9300 flhalf 10759 modqcyc 10818 addmodlteq 10857 binom2 11110 binom3 11116 sqoddm1div8 11153 bcpasc 11227 hashf1lem2 11309 remim 11648 mulreap 11652 readd 11657 remullem 11659 imadd 11665 cjadd 11672 bdtrilem 12031 fsummulc2 12241 binomlem 12276 tanval3ap 12507 sinadd 12529 tanaddap 12532 bezoutlemnewy 12799 dvdsmulgcd 12828 lcmgcdlem 12881 pythagtriplem1 13074 pcaddlem 13148 mul4sqlem 13202 tangtx 16077 rpmulcxp 16154 rpcxpmul2 16158 binom4 16231 chtqub 16308 bposlem9 16331 lgseisenlem2 16407 2lgsoddprmlem2 16442 2sqlem4 16454 2sqlem8 16459 |
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