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Mirrors > Home > ILE Home > Th. List > 2cn | GIF version |
Description: The number 2 is a complex number. (Contributed by NM, 30-Jul-2004.) |
Ref | Expression |
---|---|
2cn | ⊢ 2 ∈ ℂ |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 2re 8935 | . 2 ⊢ 2 ∈ ℝ | |
2 | 1 | recni 7919 | 1 ⊢ 2 ∈ ℂ |
Colors of variables: wff set class |
Syntax hints: ∈ wcel 2141 ℂcc 7759 2c2 8916 |
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 7853 ax-1re 7855 ax-addrcl 7858 |
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 8924 |
This theorem is referenced by: 2ex 8937 2cnd 8938 2m1e1 8983 3m1e2 8985 2p2e4 8992 times2 8994 2div2e1 8997 1p2e3 8999 3p3e6 9007 4p3e7 9009 5p3e8 9012 6p3e9 9015 2t1e2 9018 2t2e4 9019 3t3e9 9022 2t0e0 9024 4d2e2 9025 2cnne0 9074 1mhlfehlf 9083 8th4div3 9084 halfpm6th 9085 2mulicn 9087 2muliap0 9089 halfcl 9091 half0 9093 2halves 9094 halfaddsub 9099 div4p1lem1div2 9118 3halfnz 9296 zneo 9300 nneoor 9301 zeo 9304 7p3e10 9404 4t4e16 9428 6t3e18 9434 7t7e49 9443 8t5e40 9447 9t9e81 9458 decbin0 9469 decbin2 9470 halfthird 9472 fztpval 10026 fz0tp 10065 fz0to4untppr 10067 fzo0to3tp 10162 2tnp1ge0ge0 10244 expubnd 10520 sq2 10558 sq4e2t8 10560 cu2 10561 subsq2 10570 binom2sub 10576 binom3 10580 zesq 10581 fac2 10652 fac3 10653 faclbnd2 10663 bcn2 10685 4bc2eq6 10695 crre 10808 addcj 10842 imval2 10845 resqrexlemover 10961 resqrexlemcalc1 10965 resqrexlemnm 10969 resqrexlemcvg 10970 amgm2 11069 arisum 11448 arisum2 11449 geo2sum2 11465 geo2lim 11466 geoihalfsum 11472 efcllemp 11608 ege2le3 11621 tanval2ap 11663 tanval3ap 11664 efi4p 11667 efival 11682 sinadd 11686 cosadd 11687 sinmul 11694 cosmul 11695 cos2tsin 11701 ef01bndlem 11706 sin01bnd 11707 cos01bnd 11708 cos1bnd 11709 cos2bnd 11710 cos01gt0 11712 sin02gt0 11713 sin4lt0 11716 cos12dec 11717 egt2lt3 11729 odd2np1lem 11818 odd2np1 11819 ltoddhalfle 11839 halfleoddlt 11840 opoe 11841 omoe 11842 opeo 11843 omeo 11844 nno 11852 nn0o 11853 flodddiv4 11880 6gcd4e2 11937 3lcm2e6woprm 12027 6lcm4e12 12028 sqrt2irrlem 12102 oddpwdclemodd 12113 pythagtriplem1 12206 pythagtriplem12 12216 pythagtriplem14 12218 coscn 13444 sinhalfpilem 13465 cospi 13474 ef2pi 13479 ef2kpi 13480 efper 13481 sinperlem 13482 sin2kpi 13485 cos2kpi 13486 sin2pim 13487 cos2pim 13488 ptolemy 13498 sincosq3sgn 13502 sincosq4sgn 13503 sinq12gt0 13504 cosq23lt0 13507 coseq00topi 13509 tangtx 13512 sincos4thpi 13514 sincos6thpi 13516 sincos3rdpi 13517 pigt3 13518 abssinper 13520 coskpi 13522 cosq34lt1 13524 logsqrt 13596 2logb9irrALT 13645 lgsdir2lem2 13683 ex-fl 13719 ex-ceil 13720 ex-exp 13721 ex-fac 13722 |
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