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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 12209 | . . 3 ⊢ 2 = (1 + 1) | |
| 2 | 1 | oveq1i 7368 | . 2 ⊢ (2 · 𝐴) = ((1 + 1) · 𝐴) |
| 3 | 1p1times 11305 | . 2 ⊢ (𝐴 ∈ ℂ → ((1 + 1) · 𝐴) = (𝐴 + 𝐴)) | |
| 4 | 2, 3 | eqtrid 2784 | 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 11025 1c1 11028 + caddc 11030 · cmul 11032 2c2 12201 |
| 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 2709 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 2716 df-cleq 2729 df-clel 2812 df-rex 3063 df-rab 3391 df-v 3432 df-dif 3893 df-un 3895 df-ss 3907 df-nul 4275 df-if 4468 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-br 5087 df-iota 6446 df-fv 6498 df-ov 7361 df-2 12209 |
| This theorem is referenced by: times2 12278 2timesi 12279 2txmxeqx 12281 2halves 12360 halfaddsub 12375 avglt2 12381 2timesd 12385 expubnd 14102 absmax 15254 sinmul 16098 sin2t 16103 cos2t 16104 sadadd2lem2 16378 pythagtriplem4 16748 pythagtriplem14 16757 pythagtriplem16 16759 2sqreultlem 27398 2sqreunnltlem 27401 cncph 30879 pellexlem2 43261 acongrep 43411 sub2times 45709 2timesgt 45724 |
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