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| Mirrors > Home > MPE Home > Th. List > times2 | Structured version Visualization version GIF version | ||
| Description: A number times 2. (Contributed by NM, 16-Oct-2007.) |
| Ref | Expression |
|---|---|
| times2 | ⊢ (𝐴 ∈ ℂ → (𝐴 · 2) = (𝐴 + 𝐴)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 2cn 12311 | . . 3 ⊢ 2 ∈ ℂ | |
| 2 | mulcom 11181 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 2 ∈ ℂ) → (𝐴 · 2) = (2 · 𝐴)) | |
| 3 | 1, 2 | mpan2 703 | . 2 ⊢ (𝐴 ∈ ℂ → (𝐴 · 2) = (2 · 𝐴)) |
| 4 | 2times 12371 | . 2 ⊢ (𝐴 ∈ ℂ → (2 · 𝐴) = (𝐴 + 𝐴)) | |
| 5 | 3, 4 | eqtrd 2798 | 1 ⊢ (𝐴 ∈ ℂ → (𝐴 · 2) = (𝐴 + 𝐴)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1570 ∈ wcel 2143 (class class class)co 7410 ℂcc 11093 + caddc 11098 · cmul 11100 2c2 12290 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-ext 2735 ax-resscn 11152 ax-1cn 11153 ax-icn 11154 ax-addcl 11155 ax-mulcl 11157 ax-mulcom 11159 ax-mulass 11161 ax-distr 11162 ax-1rid 11165 ax-cnre 11168 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-sb 2097 df-clab 2742 df-cleq 2755 df-clel 2838 df-rex 3090 df-rab 3417 df-v 3457 df-dif 3908 df-un 3910 df-ss 3922 df-nul 4287 df-if 4488 df-sn 4590 df-pr 4592 df-op 4596 df-uni 4873 df-br 5110 df-iota 6492 df-fv 6544 df-ov 7413 df-2 12298 |
| This theorem is referenced by: times2i 12374 avglt1 12477 times2d 12483 |
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