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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 9387 | . 2 ⊢ 3 ∈ ℝ | |
| 2 | 1 | recni 8344 | 1 ⊢ 3 ∈ ℂ |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: ∈ wcel 2209 ℂcc 8183 3c3 9365 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-11 1559 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 ax-resscn 8277 ax-1re 8279 ax-addrcl 8282 |
| This proof depends on definitions: df-bi 117 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-in 3226 df-ss 3233 df-2 9372 df-3 9373 |
| This theorem is used by: 3ex 9389 3m1e2 9433 4m1e3 9434 3p2e5 9455 3p3e6 9456 4p4e8 9459 5p4e9 9462 3t1e3 9469 3t2e6 9470 2t3e6 9471 3t3e9 9472 8th4div3 9535 halfpm6th 9536 6p4e10 9864 9t8e72 9920 halfthird 9935 fzo0to42pr 10655 sq3 11094 expnass 11103 fac3 11192 4bc3eq4 11234 ef01bndlem 12548 sin01bnd 12549 cos01bnd 12550 cos1bnd 12551 cos2bnd 12552 cos01gt0 12555 3dvdsdec 12657 3dvds2dec 12658 5ndvds3 12726 3lcm2e6woprm 12889 2exp6 13242 2exp16 13246 13prm 13259 17prm 13260 19prm 13261 37prm 13264 43prm 13265 83prm 13266 139prm 13267 163prm 13268 317prm 13269 631prm 13270 1259lem1 13271 1259lem2 13272 1259lem3 13273 1259lem4 13274 1259lem5 13275 1259prm 13276 cosq23lt0 16060 tangtx 16065 sincos6thpi 16069 sincos3rdpi 16070 pigt3 16071 binom4 16219 log2tlbndlog2 16220 log2ublem2 16222 log2ublem3 16223 log2ublog2 16224 ppiqub 16293 chtqub 16296 bclbnd 16307 bposlem6 16316 bposlem8 16318 bposlem9 16319 lgsdir2lem1 16352 lgsdir2lem5 16356 2lgslem3b 16418 2lgslem3d 16420 2lgsoddprmlem3c 16433 2lgsoddprmlem3d 16434 ex-exp 16946 ex-dvds 16949 ex-gcd 16950 |
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