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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 8987 | . 2 ⊢ 3 ∈ ℝ | |
2 | 1 | recni 7964 | 1 ⊢ 3 ∈ ℂ |
Colors of variables: wff set class |
Syntax hints: ∈ wcel 2148 ℂcc 7804 3c3 8965 |
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 1447 ax-7 1448 ax-gen 1449 ax-ie1 1493 ax-ie2 1494 ax-8 1504 ax-11 1506 ax-4 1510 ax-17 1526 ax-i9 1530 ax-ial 1534 ax-i5r 1535 ax-ext 2159 ax-resscn 7898 ax-1re 7900 ax-addrcl 7903 |
This theorem depends on definitions: df-bi 117 df-nf 1461 df-sb 1763 df-clab 2164 df-cleq 2170 df-clel 2173 df-in 3135 df-ss 3142 df-2 8972 df-3 8973 |
This theorem is referenced by: 3ex 8989 3m1e2 9033 4m1e3 9034 3p2e5 9054 3p3e6 9055 4p4e8 9058 5p4e9 9061 3t1e3 9068 3t2e6 9069 3t3e9 9070 8th4div3 9132 halfpm6th 9133 6p4e10 9449 9t8e72 9505 halfthird 9520 fzo0to42pr 10213 sq3 10609 expnass 10618 fac3 10703 4bc3eq4 10744 ef01bndlem 11755 sin01bnd 11756 cos01bnd 11757 cos1bnd 11758 cos2bnd 11759 cos01gt0 11761 3dvdsdec 11860 3dvds2dec 11861 3lcm2e6woprm 12076 cosq23lt0 14036 tangtx 14041 sincos6thpi 14045 sincos3rdpi 14046 pigt3 14047 binom4 14179 lgsdir2lem1 14211 lgsdir2lem5 14215 ex-exp 14250 ex-dvds 14253 ex-gcd 14254 |
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