| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 12360 | . . 3 ⊢ 2 = (1 + 1) | |
| 2 | 1 | oveq1i 7419 | . 2 ⊢ (2 · 𝐴) = ((1 + 1) · 𝐴) |
| 3 | 1p1times 11438 | . 2 ⊢ (𝐴 ∈ ℂ → ((1 + 1) · 𝐴) = (𝐴 + 𝐴)) | |
| 4 | 2, 3 | eqtrid 2807 | 1 ⊢ (𝐴 ∈ ℂ → (2 · 𝐴) = (𝐴 + 𝐴)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 ∈ wcel 2145 (class class class)co 7409 ℂcc 11155 1c1 11158 + caddc 11160 · cmul 11162 2c2 12352 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-ext 2732 ax-resscn 11214 ax-1cn 11215 ax-icn 11216 ax-addcl 11217 ax-mulcl 11219 ax-mulcom 11221 ax-mulass 11223 ax-distr 11224 ax-1rid 11227 ax-cnre 11230 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-sb 2100 df-clab 2739 df-cleq 2752 df-clel 2835 df-rex 3087 df-rab 3413 df-v 3452 df-dif 3902 df-un 3904 df-ss 3916 df-nul 4280 df-if 4483 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-br 5104 df-iota 6484 df-fv 6536 df-ov 7412 df-2 12360 |
| This theorem is used by: times2 12434 2timesi 12435 2txmxeqx 12437 2halves 12519 halfaddsub 12534 avglt2 12540 2timesd 12544 expubnd 14275 absmax 15450 sinmul 16293 sin2t 16298 cos2t 16299 sadadd2lem2 16573 pythagtriplem4 16944 pythagtriplem14 16953 pythagtriplem16 16955 2sqreultlem 27723 2sqreunnltlem 27726 cncph 31340 pellexlem2 43769 acongrep 43919 sub2times 46204 2timesgt 46219 |
| Copyright terms: Public domain | W3C validator |