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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 9217 | . 2 ⊢ 3 ∈ ℝ | |
| 2 | 1 | recni 8191 | 1 ⊢ 3 ∈ ℂ |
| Colors of variables: wff set class |
| Syntax hints: ∈ wcel 2202 ℂcc 8030 3c3 9195 |
| 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 8124 ax-1re 8126 ax-addrcl 8129 |
| 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 9202 df-3 9203 |
| This theorem is referenced by: 3ex 9219 3m1e2 9263 4m1e3 9264 3p2e5 9285 3p3e6 9286 4p4e8 9289 5p4e9 9292 3t1e3 9299 3t2e6 9300 3t3e9 9301 8th4div3 9363 halfpm6th 9364 6p4e10 9682 9t8e72 9738 halfthird 9753 fzo0to42pr 10466 sq3 10899 expnass 10908 fac3 10995 4bc3eq4 11036 ef01bndlem 12322 sin01bnd 12323 cos01bnd 12324 cos1bnd 12325 cos2bnd 12326 cos01gt0 12329 3dvdsdec 12431 3dvds2dec 12432 5ndvds3 12500 3lcm2e6woprm 12663 2exp6 13011 2exp16 13015 cosq23lt0 15563 tangtx 15568 sincos6thpi 15572 sincos3rdpi 15573 pigt3 15574 binom4 15709 lgsdir2lem1 15763 lgsdir2lem5 15767 2lgslem3b 15829 2lgslem3d 15831 2lgsoddprmlem3c 15844 2lgsoddprmlem3d 15845 ex-exp 16345 ex-dvds 16348 ex-gcd 16349 |
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