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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 12256 | . . 3 ⊢ 2 ∈ ℂ | |
| 2 | mulcom 11124 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 2 ∈ ℂ) → (𝐴 · 2) = (2 · 𝐴)) | |
| 3 | 1, 2 | mpan2 692 | . 2 ⊢ (𝐴 ∈ ℂ → (𝐴 · 2) = (2 · 𝐴)) |
| 4 | 2times 12312 | . 2 ⊢ (𝐴 ∈ ℂ → (2 · 𝐴) = (𝐴 + 𝐴)) | |
| 5 | 3, 4 | eqtrd 2771 | 1 ⊢ (𝐴 ∈ ℂ → (𝐴 · 2) = (𝐴 + 𝐴)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1542 ∈ wcel 2114 (class class class)co 7367 ℂcc 11036 + caddc 11041 · cmul 11043 2c2 12236 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-ext 2708 ax-resscn 11095 ax-1cn 11096 ax-icn 11097 ax-addcl 11098 ax-mulcl 11100 ax-mulcom 11102 ax-mulass 11104 ax-distr 11105 ax-1rid 11108 ax-cnre 11111 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-sb 2069 df-clab 2715 df-cleq 2728 df-clel 2811 df-rex 3062 df-rab 3390 df-v 3431 df-dif 3892 df-un 3894 df-ss 3906 df-nul 4274 df-if 4467 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4851 df-br 5086 df-iota 6454 df-fv 6506 df-ov 7370 df-2 12244 |
| This theorem is referenced by: times2i 12315 avglt1 12415 times2d 12421 |
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