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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 9259 | . 2 ⊢ 3 ∈ ℝ | |
| 2 | 1 | recni 8234 | 1 ⊢ 3 ∈ ℂ |
| Colors of variables: wff set class |
| Syntax hints: ∈ wcel 2202 ℂcc 8073 3c3 9237 |
| 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 2213 ax-resscn 8167 ax-1re 8169 ax-addrcl 8172 |
| This theorem depends on definitions: df-bi 117 df-nf 1510 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-in 3207 df-ss 3214 df-2 9244 df-3 9245 |
| This theorem is referenced by: 3ex 9261 3m1e2 9305 4m1e3 9306 3p2e5 9327 3p3e6 9328 4p4e8 9331 5p4e9 9334 3t1e3 9341 3t2e6 9342 3t3e9 9343 8th4div3 9405 halfpm6th 9406 6p4e10 9726 9t8e72 9782 halfthird 9797 fzo0to42pr 10511 sq3 10944 expnass 10953 fac3 11040 4bc3eq4 11081 ef01bndlem 12380 sin01bnd 12381 cos01bnd 12382 cos1bnd 12383 cos2bnd 12384 cos01gt0 12387 3dvdsdec 12489 3dvds2dec 12490 5ndvds3 12558 3lcm2e6woprm 12721 2exp6 13069 2exp16 13073 cosq23lt0 15627 tangtx 15632 sincos6thpi 15636 sincos3rdpi 15637 pigt3 15638 binom4 15773 lgsdir2lem1 15830 lgsdir2lem5 15834 2lgslem3b 15896 2lgslem3d 15898 2lgsoddprmlem3c 15911 2lgsoddprmlem3d 15912 ex-exp 16424 ex-dvds 16427 ex-gcd 16428 |
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