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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 9380 | . 2 ⊢ 3 ∈ ℝ | |
| 2 | 1 | recni 8338 | 1 ⊢ 3 ∈ ℂ |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: ∈ wcel 2209 ℂcc 8177 3c3 9358 |
| 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 8271 ax-1re 8273 ax-addrcl 8276 |
| 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 9365 df-3 9366 |
| This theorem is used by: 3ex 9382 3m1e2 9426 4m1e3 9427 3p2e5 9448 3p3e6 9449 4p4e8 9452 5p4e9 9455 3t1e3 9462 3t2e6 9463 2t3e6 9464 3t3e9 9465 8th4div3 9528 halfpm6th 9529 6p4e10 9857 9t8e72 9913 halfthird 9928 fzo0to42pr 10648 sq3 11086 expnass 11095 fac3 11184 4bc3eq4 11226 ef01bndlem 12539 sin01bnd 12540 cos01bnd 12541 cos1bnd 12542 cos2bnd 12543 cos01gt0 12546 3dvdsdec 12648 3dvds2dec 12649 5ndvds3 12717 3lcm2e6woprm 12880 2exp6 13233 2exp16 13237 13prm 13250 17prm 13251 19prm 13252 37prm 13255 43prm 13256 83prm 13257 139prm 13258 163prm 13259 317prm 13260 631prm 13261 1259lem1 13262 1259lem2 13263 1259lem3 13264 1259lem4 13265 1259lem5 13266 1259prm 13267 cosq23lt0 15984 tangtx 15989 sincos6thpi 15993 sincos3rdpi 15994 pigt3 15995 binom4 16138 log2tlbndlog2 16139 log2ublem2 16141 log2ublem3 16142 log2ublog2 16143 ppiqub 16194 bclbnd 16205 lgsdir2lem1 16245 lgsdir2lem5 16249 2lgslem3b 16311 2lgslem3d 16313 2lgsoddprmlem3c 16326 2lgsoddprmlem3d 16327 ex-exp 16839 ex-dvds 16842 ex-gcd 16843 |
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