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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 10758 modqcyc 10817 addmodlteq 10856 binom2 11109 binom3 11115 sqoddm1div8 11152 bcpasc 11226 hashf1lem2 11308 remim 11647 mulreap 11651 readd 11656 remullem 11658 imadd 11664 cjadd 11671 bdtrilem 12030 fsummulc2 12240 binomlem 12275 tanval3ap 12506 sinadd 12528 tanaddap 12531 bezoutlemnewy 12798 dvdsmulgcd 12827 lcmgcdlem 12880 pythagtriplem1 13073 pcaddlem 13147 mul4sqlem 13201 tangtx 16098 rpmulcxp 16175 rpcxpmul2 16179 binom4 16252 chtqub 16329 bposlem9 16352 lgseisenlem2 16428 2lgsoddprmlem2 16463 2sqlem4 16475 2sqlem8 16480 |
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