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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 9207 | . 2 ⊢ 3 ∈ ℝ | |
| 2 | 1 | recni 8181 | 1 ⊢ 3 ∈ ℂ |
| Colors of variables: wff set class |
| Syntax hints: ∈ wcel 2200 ℂcc 8020 3c3 9185 |
| 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 8114 ax-1re 8116 ax-addrcl 8119 |
| 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 3204 df-ss 3211 df-2 9192 df-3 9193 |
| This theorem is referenced by: 3ex 9209 3m1e2 9253 4m1e3 9254 3p2e5 9275 3p3e6 9276 4p4e8 9279 5p4e9 9282 3t1e3 9289 3t2e6 9290 3t3e9 9291 8th4div3 9353 halfpm6th 9354 6p4e10 9672 9t8e72 9728 halfthird 9743 fzo0to42pr 10455 sq3 10888 expnass 10897 fac3 10984 4bc3eq4 11025 ef01bndlem 12307 sin01bnd 12308 cos01bnd 12309 cos1bnd 12310 cos2bnd 12311 cos01gt0 12314 3dvdsdec 12416 3dvds2dec 12417 5ndvds3 12485 3lcm2e6woprm 12648 2exp6 12996 2exp16 13000 cosq23lt0 15547 tangtx 15552 sincos6thpi 15556 sincos3rdpi 15557 pigt3 15558 binom4 15693 lgsdir2lem1 15747 lgsdir2lem5 15751 2lgslem3b 15813 2lgslem3d 15815 2lgsoddprmlem3c 15828 2lgsoddprmlem3d 15829 ex-exp 16259 ex-dvds 16262 ex-gcd 16263 |
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