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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 8983 | . 2 ⊢ 2 ∈ ℝ | |
2 | 1 | recni 7964 | 1 ⊢ 2 ∈ ℂ |
Colors of variables: wff set class |
Syntax hints: ∈ wcel 2148 ℂcc 7804 2c2 8964 |
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 |
This theorem is referenced by: 2ex 8985 2cnd 8986 2m1e1 9031 3m1e2 9033 2p2e4 9040 times2 9042 2div2e1 9045 1p2e3 9047 3p3e6 9055 4p3e7 9057 5p3e8 9060 6p3e9 9063 2t1e2 9066 2t2e4 9067 3t3e9 9070 2t0e0 9072 4d2e2 9073 2cnne0 9122 1mhlfehlf 9131 8th4div3 9132 halfpm6th 9133 2mulicn 9135 2muliap0 9137 halfcl 9139 half0 9141 2halves 9142 halfaddsub 9147 div4p1lem1div2 9166 3halfnz 9344 zneo 9348 nneoor 9349 zeo 9352 7p3e10 9452 4t4e16 9476 6t3e18 9482 7t7e49 9491 8t5e40 9495 9t9e81 9506 decbin0 9517 decbin2 9518 halfthird 9520 fztpval 10076 fz0tp 10115 fz0to4untppr 10117 fzo0to3tp 10212 2tnp1ge0ge0 10294 expubnd 10570 sq2 10608 sq4e2t8 10610 cu2 10611 subsq2 10620 binom2sub 10626 binom3 10630 zesq 10631 fac2 10702 fac3 10703 faclbnd2 10713 bcn2 10735 4bc2eq6 10745 crre 10857 addcj 10891 imval2 10894 resqrexlemover 11010 resqrexlemcalc1 11014 resqrexlemnm 11018 resqrexlemcvg 11019 amgm2 11118 arisum 11497 arisum2 11498 geo2sum2 11514 geo2lim 11515 geoihalfsum 11521 efcllemp 11657 ege2le3 11670 tanval2ap 11712 tanval3ap 11713 efi4p 11716 efival 11731 sinadd 11735 cosadd 11736 sinmul 11743 cosmul 11744 cos2tsin 11750 ef01bndlem 11755 sin01bnd 11756 cos01bnd 11757 cos1bnd 11758 cos2bnd 11759 cos01gt0 11761 sin02gt0 11762 sin4lt0 11765 cos12dec 11766 egt2lt3 11778 odd2np1lem 11867 odd2np1 11868 ltoddhalfle 11888 halfleoddlt 11889 opoe 11890 omoe 11891 opeo 11892 omeo 11893 nno 11901 nn0o 11902 flodddiv4 11929 6gcd4e2 11986 3lcm2e6woprm 12076 6lcm4e12 12077 sqrt2irrlem 12151 oddpwdclemodd 12162 pythagtriplem1 12255 pythagtriplem12 12265 pythagtriplem14 12267 coscn 13973 sinhalfpilem 13994 cospi 14003 ef2pi 14008 ef2kpi 14009 efper 14010 sinperlem 14011 sin2kpi 14014 cos2kpi 14015 sin2pim 14016 cos2pim 14017 ptolemy 14027 sincosq3sgn 14031 sincosq4sgn 14032 sinq12gt0 14033 cosq23lt0 14036 coseq00topi 14038 tangtx 14041 sincos4thpi 14043 sincos6thpi 14045 sincos3rdpi 14046 pigt3 14047 abssinper 14049 coskpi 14051 cosq34lt1 14053 logsqrt 14125 2logb9irrALT 14174 lgsdir2lem2 14212 ex-fl 14248 ex-ceil 14249 ex-exp 14250 ex-fac 14251 |
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