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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 9200 | . 2 ⊢ 3 ∈ ℝ | |
| 2 | 1 | recni 8174 | 1 ⊢ 3 ∈ ℂ |
| Colors of variables: wff set class |
| Syntax hints: ∈ wcel 2200 ℂcc 8013 3c3 9178 |
| 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 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-11 1552 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-ext 2211 ax-resscn 8107 ax-1re 8109 ax-addrcl 8112 |
| This theorem depends on definitions: df-bi 117 df-nf 1507 df-sb 1809 df-clab 2216 df-cleq 2222 df-clel 2225 df-in 3203 df-ss 3210 df-2 9185 df-3 9186 |
| This theorem is referenced by: 3ex 9202 3m1e2 9246 4m1e3 9247 3p2e5 9268 3p3e6 9269 4p4e8 9272 5p4e9 9275 3t1e3 9282 3t2e6 9283 3t3e9 9284 8th4div3 9346 halfpm6th 9347 6p4e10 9665 9t8e72 9721 halfthird 9736 fzo0to42pr 10443 sq3 10875 expnass 10884 fac3 10971 4bc3eq4 11012 ef01bndlem 12288 sin01bnd 12289 cos01bnd 12290 cos1bnd 12291 cos2bnd 12292 cos01gt0 12295 3dvdsdec 12397 3dvds2dec 12398 5ndvds3 12466 3lcm2e6woprm 12629 2exp6 12977 2exp16 12981 cosq23lt0 15528 tangtx 15533 sincos6thpi 15537 sincos3rdpi 15538 pigt3 15539 binom4 15674 lgsdir2lem1 15728 lgsdir2lem5 15732 2lgslem3b 15794 2lgslem3d 15796 2lgsoddprmlem3c 15809 2lgsoddprmlem3d 15810 ex-exp 16200 ex-dvds 16203 ex-gcd 16204 |
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