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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 9195 | . 2 ⊢ 3 ∈ ℝ | |
| 2 | 1 | recni 8169 | 1 ⊢ 3 ∈ ℂ |
| Colors of variables: wff set class |
| Syntax hints: ∈ wcel 2200 ℂcc 8008 3c3 9173 |
| 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 8102 ax-1re 8104 ax-addrcl 8107 |
| 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 9180 df-3 9181 |
| This theorem is referenced by: 3ex 9197 3m1e2 9241 4m1e3 9242 3p2e5 9263 3p3e6 9264 4p4e8 9267 5p4e9 9270 3t1e3 9277 3t2e6 9278 3t3e9 9279 8th4div3 9341 halfpm6th 9342 6p4e10 9660 9t8e72 9716 halfthird 9731 fzo0to42pr 10438 sq3 10870 expnass 10879 fac3 10966 4bc3eq4 11007 ef01bndlem 12282 sin01bnd 12283 cos01bnd 12284 cos1bnd 12285 cos2bnd 12286 cos01gt0 12289 3dvdsdec 12391 3dvds2dec 12392 5ndvds3 12460 3lcm2e6woprm 12623 2exp6 12971 2exp16 12975 cosq23lt0 15522 tangtx 15527 sincos6thpi 15531 sincos3rdpi 15532 pigt3 15533 binom4 15668 lgsdir2lem1 15722 lgsdir2lem5 15726 2lgslem3b 15788 2lgslem3d 15790 2lgsoddprmlem3c 15803 2lgsoddprmlem3d 15804 ex-exp 16146 ex-dvds 16149 ex-gcd 16150 |
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