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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 8952 | . 2 ⊢ 3 ∈ ℝ | |
2 | 1 | recni 7932 | 1 ⊢ 3 ∈ ℂ |
Colors of variables: wff set class |
Syntax hints: ∈ wcel 2141 ℂcc 7772 3c3 8930 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-5 1440 ax-7 1441 ax-gen 1442 ax-ie1 1486 ax-ie2 1487 ax-8 1497 ax-11 1499 ax-4 1503 ax-17 1519 ax-i9 1523 ax-ial 1527 ax-i5r 1528 ax-ext 2152 ax-resscn 7866 ax-1re 7868 ax-addrcl 7871 |
This theorem depends on definitions: df-bi 116 df-nf 1454 df-sb 1756 df-clab 2157 df-cleq 2163 df-clel 2166 df-in 3127 df-ss 3134 df-2 8937 df-3 8938 |
This theorem is referenced by: 3ex 8954 3m1e2 8998 4m1e3 8999 3p2e5 9019 3p3e6 9020 4p4e8 9023 5p4e9 9026 3t1e3 9033 3t2e6 9034 3t3e9 9035 8th4div3 9097 halfpm6th 9098 6p4e10 9414 9t8e72 9470 halfthird 9485 fzo0to42pr 10176 sq3 10572 expnass 10581 fac3 10666 4bc3eq4 10707 ef01bndlem 11719 sin01bnd 11720 cos01bnd 11721 cos1bnd 11722 cos2bnd 11723 cos01gt0 11725 3dvdsdec 11824 3dvds2dec 11825 3lcm2e6woprm 12040 cosq23lt0 13548 tangtx 13553 sincos6thpi 13557 sincos3rdpi 13558 pigt3 13559 binom4 13691 lgsdir2lem1 13723 lgsdir2lem5 13727 ex-exp 13762 ex-dvds 13765 ex-gcd 13766 |
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