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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 12233 | . . 3 ⊢ 2 = (1 + 1) | |
| 2 | 1 | oveq1i 7366 | . 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 7356 ℂcc 11025 1c1 11028 + caddc 11030 · cmul 11032 2c2 12225 |
| 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 11084 ax-1cn 11085 ax-icn 11086 ax-addcl 11087 ax-mulcl 11089 ax-mulcom 11091 ax-mulass 11093 ax-distr 11094 ax-1rid 11097 ax-cnre 11100 |
| 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 3388 df-v 3429 df-dif 3888 df-un 3890 df-ss 3902 df-nul 4264 df-if 4457 df-sn 4558 df-pr 4560 df-op 4564 df-uni 4841 df-br 5075 df-iota 6443 df-fv 6495 df-ov 7359 df-2 12233 |
| This theorem is referenced by: times2 12302 2timesi 12303 2txmxeqx 12305 2halves 12384 halfaddsub 12399 avglt2 12405 2timesd 12409 expubnd 14129 absmax 15281 sinmul 16128 sin2t 16133 cos2t 16134 sadadd2lem2 16408 pythagtriplem4 16779 pythagtriplem14 16788 pythagtriplem16 16790 2sqreultlem 27398 2sqreunnltlem 27401 cncph 30878 pellexlem2 43246 acongrep 43396 sub2times 45694 2timesgt 45709 |
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