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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 12200 | . . 3 ⊢ 2 ∈ ℂ | |
| 2 | mulcom 11092 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 2 ∈ ℂ) → (𝐴 · 2) = (2 · 𝐴)) | |
| 3 | 1, 2 | mpan2 691 | . 2 ⊢ (𝐴 ∈ ℂ → (𝐴 · 2) = (2 · 𝐴)) |
| 4 | 2times 12256 | . 2 ⊢ (𝐴 ∈ ℂ → (2 · 𝐴) = (𝐴 + 𝐴)) | |
| 5 | 3, 4 | eqtrd 2766 | 1 ⊢ (𝐴 ∈ ℂ → (𝐴 · 2) = (𝐴 + 𝐴)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1541 ∈ wcel 2111 (class class class)co 7346 ℂcc 11004 + caddc 11009 · cmul 11011 2c2 12180 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2113 ax-9 2121 ax-ext 2703 ax-resscn 11063 ax-1cn 11064 ax-icn 11065 ax-addcl 11066 ax-mulcl 11068 ax-mulcom 11070 ax-mulass 11072 ax-distr 11073 ax-1rid 11076 ax-cnre 11079 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-sb 2068 df-clab 2710 df-cleq 2723 df-clel 2806 df-rex 3057 df-rab 3396 df-v 3438 df-dif 3900 df-un 3902 df-ss 3914 df-nul 4281 df-if 4473 df-sn 4574 df-pr 4576 df-op 4580 df-uni 4857 df-br 5090 df-iota 6437 df-fv 6489 df-ov 7349 df-2 12188 |
| This theorem is referenced by: times2i 12259 avglt1 12359 times2d 12365 |
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