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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 8923 | . 2 ⊢ 2 ∈ ℝ | |
2 | 1 | recni 7907 | 1 ⊢ 2 ∈ ℂ |
Colors of variables: wff set class |
Syntax hints: ∈ wcel 2136 ℂcc 7747 2c2 8904 |
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 1435 ax-7 1436 ax-gen 1437 ax-ie1 1481 ax-ie2 1482 ax-8 1492 ax-11 1494 ax-4 1498 ax-17 1514 ax-i9 1518 ax-ial 1522 ax-i5r 1523 ax-ext 2147 ax-resscn 7841 ax-1re 7843 ax-addrcl 7846 |
This theorem depends on definitions: df-bi 116 df-nf 1449 df-sb 1751 df-clab 2152 df-cleq 2158 df-clel 2161 df-in 3121 df-ss 3128 df-2 8912 |
This theorem is referenced by: 2ex 8925 2cnd 8926 2m1e1 8971 3m1e2 8973 2p2e4 8980 times2 8982 2div2e1 8985 1p2e3 8987 3p3e6 8995 4p3e7 8997 5p3e8 9000 6p3e9 9003 2t1e2 9006 2t2e4 9007 3t3e9 9010 2t0e0 9012 4d2e2 9013 2cnne0 9062 1mhlfehlf 9071 8th4div3 9072 halfpm6th 9073 2mulicn 9075 2muliap0 9077 halfcl 9079 half0 9081 2halves 9082 halfaddsub 9087 div4p1lem1div2 9106 3halfnz 9284 zneo 9288 nneoor 9289 zeo 9292 7p3e10 9392 4t4e16 9416 6t3e18 9422 7t7e49 9431 8t5e40 9435 9t9e81 9446 decbin0 9457 decbin2 9458 halfthird 9460 fztpval 10014 fz0tp 10053 fz0to4untppr 10055 fzo0to3tp 10150 2tnp1ge0ge0 10232 expubnd 10508 sq2 10546 sq4e2t8 10548 cu2 10549 subsq2 10558 binom2sub 10564 binom3 10568 zesq 10569 fac2 10640 fac3 10641 faclbnd2 10651 bcn2 10673 4bc2eq6 10683 crre 10795 addcj 10829 imval2 10832 resqrexlemover 10948 resqrexlemcalc1 10952 resqrexlemnm 10956 resqrexlemcvg 10957 amgm2 11056 arisum 11435 arisum2 11436 geo2sum2 11452 geo2lim 11453 geoihalfsum 11459 efcllemp 11595 ege2le3 11608 tanval2ap 11650 tanval3ap 11651 efi4p 11654 efival 11669 sinadd 11673 cosadd 11674 sinmul 11681 cosmul 11682 cos2tsin 11688 ef01bndlem 11693 sin01bnd 11694 cos01bnd 11695 cos1bnd 11696 cos2bnd 11697 cos01gt0 11699 sin02gt0 11700 sin4lt0 11703 cos12dec 11704 egt2lt3 11716 odd2np1lem 11805 odd2np1 11806 ltoddhalfle 11826 halfleoddlt 11827 opoe 11828 omoe 11829 opeo 11830 omeo 11831 nno 11839 nn0o 11840 flodddiv4 11867 6gcd4e2 11924 3lcm2e6woprm 12014 6lcm4e12 12015 sqrt2irrlem 12089 oddpwdclemodd 12100 pythagtriplem1 12193 pythagtriplem12 12203 pythagtriplem14 12205 coscn 13291 sinhalfpilem 13312 cospi 13321 ef2pi 13326 ef2kpi 13327 efper 13328 sinperlem 13329 sin2kpi 13332 cos2kpi 13333 sin2pim 13334 cos2pim 13335 ptolemy 13345 sincosq3sgn 13349 sincosq4sgn 13350 sinq12gt0 13351 cosq23lt0 13354 coseq00topi 13356 tangtx 13359 sincos4thpi 13361 sincos6thpi 13363 sincos3rdpi 13364 pigt3 13365 abssinper 13367 coskpi 13369 cosq34lt1 13371 logsqrt 13443 2logb9irrALT 13492 lgsdir2lem2 13530 ex-fl 13566 ex-ceil 13567 ex-exp 13568 ex-fac 13569 |
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