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| Mirrors > Home > MPE Home > Th. List > 2times | Structured version Visualization version GIF version | ||
| Description: Two times a number. (Contributed by NM, 10-Oct-2004.) (Revised by Mario Carneiro, 27-May-2016.) (Proof shortened by AV, 26-Feb-2020.) |
| Ref | Expression |
|---|---|
| 2times | ⊢ (𝐴 ∈ ℂ → (2 · 𝐴) = (𝐴 + 𝐴)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-2 12210 | . . 3 ⊢ 2 = (1 + 1) | |
| 2 | 1 | oveq1i 7368 | . 2 ⊢ (2 · 𝐴) = ((1 + 1) · 𝐴) |
| 3 | 1p1times 11306 | . 2 ⊢ (𝐴 ∈ ℂ → ((1 + 1) · 𝐴) = (𝐴 + 𝐴)) | |
| 4 | 2, 3 | eqtrid 2782 | 1 ⊢ (𝐴 ∈ ℂ → (2 · 𝐴) = (𝐴 + 𝐴)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1542 ∈ wcel 2114 (class class class)co 7358 ℂcc 11026 1c1 11029 + caddc 11031 · cmul 11033 2c2 12202 |
| 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 2707 ax-resscn 11085 ax-1cn 11086 ax-icn 11087 ax-addcl 11088 ax-mulcl 11090 ax-mulcom 11092 ax-mulass 11094 ax-distr 11095 ax-1rid 11098 ax-cnre 11101 |
| 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 2714 df-cleq 2727 df-clel 2810 df-rex 3060 df-rab 3399 df-v 3441 df-dif 3903 df-un 3905 df-ss 3917 df-nul 4285 df-if 4479 df-sn 4580 df-pr 4582 df-op 4586 df-uni 4863 df-br 5098 df-iota 6447 df-fv 6499 df-ov 7361 df-2 12210 |
| This theorem is referenced by: times2 12279 2timesi 12280 2txmxeqx 12282 2halves 12361 halfaddsub 12376 avglt2 12382 2timesd 12386 expubnd 14103 absmax 15255 sinmul 16099 sin2t 16104 cos2t 16105 sadadd2lem2 16379 pythagtriplem4 16749 pythagtriplem14 16758 pythagtriplem16 16760 2sqreultlem 27416 2sqreunnltlem 27419 cncph 30875 pellexlem2 43109 acongrep 43259 sub2times 45558 2timesgt 45573 |
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