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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 8312 | . 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 8178 + caddc 8183 · cmul 8185 |
| 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 8284 |
| This proof depends on definitions: df-bi 117 df-3an 1011 |
| This theorem is used by: subdi 8714 mulreim 8935 apadd1 8939 conjmulap 9062 cju 9294 flhalf 10751 modqcyc 10810 addmodlteq 10849 binom2 11102 binom3 11108 sqoddm1div8 11145 bcpasc 11219 hashf1lem2 11301 remim 11640 mulreap 11644 readd 11649 remullem 11651 imadd 11657 cjadd 11664 bdtrilem 12023 fsummulc2 12233 binomlem 12268 tanval3ap 12499 sinadd 12521 tanaddap 12524 bezoutlemnewy 12791 dvdsmulgcd 12820 lcmgcdlem 12873 pythagtriplem1 13066 pcaddlem 13140 mul4sqlem 13194 tangtx 15992 rpmulcxp 16067 rpcxpmul2 16071 binom4 16141 chtqub 16218 lgseisenlem2 16312 2lgsoddprmlem2 16347 2sqlem4 16359 2sqlem8 16364 |
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