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| Mirrors > Home > ILE Home > Th. List > 3cn | GIF version | ||
| Description: The number 3 is a complex number. (Contributed by FL, 17-Oct-2010.) |
| Ref | Expression |
|---|---|
| 3cn | ⊢ 3 ∈ ℂ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 3re 9216 | . 2 ⊢ 3 ∈ ℝ | |
| 2 | 1 | recni 8190 | 1 ⊢ 3 ∈ ℂ |
| Colors of variables: wff set class |
| Syntax hints: ∈ wcel 2202 ℂcc 8029 3c3 9194 |
| 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-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-11 1554 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-ext 2213 ax-resscn 8123 ax-1re 8125 ax-addrcl 8128 |
| This theorem depends on definitions: df-bi 117 df-nf 1509 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-in 3206 df-ss 3213 df-2 9201 df-3 9202 |
| This theorem is referenced by: 3ex 9218 3m1e2 9262 4m1e3 9263 3p2e5 9284 3p3e6 9285 4p4e8 9288 5p4e9 9291 3t1e3 9298 3t2e6 9299 3t3e9 9300 8th4div3 9362 halfpm6th 9363 6p4e10 9681 9t8e72 9737 halfthird 9752 fzo0to42pr 10464 sq3 10897 expnass 10906 fac3 10993 4bc3eq4 11034 ef01bndlem 12316 sin01bnd 12317 cos01bnd 12318 cos1bnd 12319 cos2bnd 12320 cos01gt0 12323 3dvdsdec 12425 3dvds2dec 12426 5ndvds3 12494 3lcm2e6woprm 12657 2exp6 13005 2exp16 13009 cosq23lt0 15556 tangtx 15561 sincos6thpi 15565 sincos3rdpi 15566 pigt3 15567 binom4 15702 lgsdir2lem1 15756 lgsdir2lem5 15760 2lgslem3b 15822 2lgslem3d 15824 2lgsoddprmlem3c 15837 2lgsoddprmlem3d 15838 ex-exp 16323 ex-dvds 16326 ex-gcd 16327 |
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