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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 9311 | . 2 ⊢ 3 ∈ ℝ | |
| 2 | 1 | recni 8286 | 1 ⊢ 3 ∈ ℂ |
| Colors of variables: wff set class |
| Syntax hints: ∈ wcel 2203 ℂcc 8125 3c3 9289 |
| 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 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-11 1555 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-ext 2214 ax-resscn 8219 ax-1re 8221 ax-addrcl 8224 |
| This theorem depends on definitions: df-bi 117 df-nf 1510 df-sb 1812 df-clab 2219 df-cleq 2225 df-clel 2228 df-in 3217 df-ss 3224 df-2 9296 df-3 9297 |
| This theorem is referenced by: 3ex 9313 3m1e2 9357 4m1e3 9358 3p2e5 9379 3p3e6 9380 4p4e8 9383 5p4e9 9386 3t1e3 9393 3t2e6 9394 3t3e9 9395 8th4div3 9457 halfpm6th 9458 6p4e10 9780 9t8e72 9836 halfthird 9851 fzo0to42pr 10565 sq3 10998 expnass 11007 fac3 11094 4bc3eq4 11136 ef01bndlem 12442 sin01bnd 12443 cos01bnd 12444 cos1bnd 12445 cos2bnd 12446 cos01gt0 12449 3dvdsdec 12551 3dvds2dec 12552 5ndvds3 12620 3lcm2e6woprm 12783 2exp6 13131 2exp16 13135 cosq23lt0 15698 tangtx 15703 sincos6thpi 15707 sincos3rdpi 15708 pigt3 15709 binom4 15844 lgsdir2lem1 15901 lgsdir2lem5 15905 2lgslem3b 15967 2lgslem3d 15969 2lgsoddprmlem3c 15982 2lgsoddprmlem3d 15983 ex-exp 16495 ex-dvds 16498 ex-gcd 16499 |
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