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| Mirrors > Home > ILE Home > Th. List > 2timesi | GIF version | ||
| Description: Two times a number. (Contributed by NM, 1-Aug-1999.) |
| Ref | Expression |
|---|---|
| 2times.1 | ⊢ 𝐴 ∈ ℂ |
| Ref | Expression |
|---|---|
| 2timesi | ⊢ (2 · 𝐴) = (𝐴 + 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 2times.1 | . 2 ⊢ 𝐴 ∈ ℂ | |
| 2 | 2times 9199 | . 2 ⊢ (𝐴 ∈ ℂ → (2 · 𝐴) = (𝐴 + 𝐴)) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ (2 · 𝐴) = (𝐴 + 𝐴) |
| Colors of variables: wff set class |
| Syntax hints: = wceq 1373 ∈ wcel 2178 (class class class)co 5967 ℂcc 7958 + caddc 7963 · cmul 7965 2c2 9122 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 711 ax-5 1471 ax-7 1472 ax-gen 1473 ax-ie1 1517 ax-ie2 1518 ax-8 1528 ax-10 1529 ax-11 1530 ax-i12 1531 ax-bndl 1533 ax-4 1534 ax-17 1550 ax-i9 1554 ax-ial 1558 ax-i5r 1559 ax-ext 2189 ax-resscn 8052 ax-1cn 8053 ax-icn 8055 ax-addcl 8056 ax-mulcl 8058 ax-mulcom 8061 ax-mulass 8063 ax-distr 8064 ax-1rid 8067 ax-cnre 8071 |
| This theorem depends on definitions: df-bi 117 df-3an 983 df-tru 1376 df-nf 1485 df-sb 1787 df-clab 2194 df-cleq 2200 df-clel 2203 df-nfc 2339 df-ral 2491 df-rex 2492 df-v 2778 df-un 3178 df-in 3180 df-ss 3187 df-sn 3649 df-pr 3650 df-op 3652 df-uni 3865 df-br 4060 df-iota 5251 df-fv 5298 df-ov 5970 df-2 9130 |
| This theorem is referenced by: 2t2e4 9226 nn0le2xi 9380 binom2i 10830 mod2xi 12855 numexp2x 12863 sinq34lt0t 15418 tangtx 15425 ex-dvds 15866 |
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