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| Mirrors > Home > MPE Home > Th. List > 2mulicn | Structured version Visualization version GIF version | ||
| Description: (2 · i) ∈ ℂ. (Contributed by David A. Wheeler, 8-Dec-2018.) |
| Ref | Expression |
|---|---|
| 2mulicn | ⊢ (2 · i) ∈ ℂ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 2cn 12333 | . 2 ⊢ 2 ∈ ℂ | |
| 2 | ax-icn 11176 | . 2 ⊢ i ∈ ℂ | |
| 3 | 1, 2 | mulcli 11233 | 1 ⊢ (2 · i) ∈ ℂ |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ∈ wcel 2146 (class class class)co 7419 ℂcc 11115 ici 11119 · cmul 11122 2c2 12312 |
| 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 2148 ax-9 2156 ax-ext 2737 ax-1cn 11175 ax-icn 11176 ax-addcl 11177 ax-mulcl 11179 |
| This proof depends on definitions: df-bi 210 df-an 402 df-ex 1813 df-cleq 2757 df-clel 2840 df-2 12320 |
| This theorem is used by: imval2 15228 sinf 16204 sinneg 16226 efival 16232 sinadd 16244 dvmptim 26182 sincn 26660 sineq0 26742 sinasin 27107 efiatan2 27135 2efiatan 27136 tanatan 27137 sineq0ALT 45705 |
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