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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 8948 | . 2 ⊢ 2 ∈ ℝ | |
2 | 1 | recni 7932 | 1 ⊢ 2 ∈ ℂ |
Colors of variables: wff set class |
Syntax hints: ∈ wcel 2141 ℂcc 7772 2c2 8929 |
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 |
This theorem is referenced by: 2ex 8950 2cnd 8951 2m1e1 8996 3m1e2 8998 2p2e4 9005 times2 9007 2div2e1 9010 1p2e3 9012 3p3e6 9020 4p3e7 9022 5p3e8 9025 6p3e9 9028 2t1e2 9031 2t2e4 9032 3t3e9 9035 2t0e0 9037 4d2e2 9038 2cnne0 9087 1mhlfehlf 9096 8th4div3 9097 halfpm6th 9098 2mulicn 9100 2muliap0 9102 halfcl 9104 half0 9106 2halves 9107 halfaddsub 9112 div4p1lem1div2 9131 3halfnz 9309 zneo 9313 nneoor 9314 zeo 9317 7p3e10 9417 4t4e16 9441 6t3e18 9447 7t7e49 9456 8t5e40 9460 9t9e81 9471 decbin0 9482 decbin2 9483 halfthird 9485 fztpval 10039 fz0tp 10078 fz0to4untppr 10080 fzo0to3tp 10175 2tnp1ge0ge0 10257 expubnd 10533 sq2 10571 sq4e2t8 10573 cu2 10574 subsq2 10583 binom2sub 10589 binom3 10593 zesq 10594 fac2 10665 fac3 10666 faclbnd2 10676 bcn2 10698 4bc2eq6 10708 crre 10821 addcj 10855 imval2 10858 resqrexlemover 10974 resqrexlemcalc1 10978 resqrexlemnm 10982 resqrexlemcvg 10983 amgm2 11082 arisum 11461 arisum2 11462 geo2sum2 11478 geo2lim 11479 geoihalfsum 11485 efcllemp 11621 ege2le3 11634 tanval2ap 11676 tanval3ap 11677 efi4p 11680 efival 11695 sinadd 11699 cosadd 11700 sinmul 11707 cosmul 11708 cos2tsin 11714 ef01bndlem 11719 sin01bnd 11720 cos01bnd 11721 cos1bnd 11722 cos2bnd 11723 cos01gt0 11725 sin02gt0 11726 sin4lt0 11729 cos12dec 11730 egt2lt3 11742 odd2np1lem 11831 odd2np1 11832 ltoddhalfle 11852 halfleoddlt 11853 opoe 11854 omoe 11855 opeo 11856 omeo 11857 nno 11865 nn0o 11866 flodddiv4 11893 6gcd4e2 11950 3lcm2e6woprm 12040 6lcm4e12 12041 sqrt2irrlem 12115 oddpwdclemodd 12126 pythagtriplem1 12219 pythagtriplem12 12229 pythagtriplem14 12231 coscn 13485 sinhalfpilem 13506 cospi 13515 ef2pi 13520 ef2kpi 13521 efper 13522 sinperlem 13523 sin2kpi 13526 cos2kpi 13527 sin2pim 13528 cos2pim 13529 ptolemy 13539 sincosq3sgn 13543 sincosq4sgn 13544 sinq12gt0 13545 cosq23lt0 13548 coseq00topi 13550 tangtx 13553 sincos4thpi 13555 sincos6thpi 13557 sincos3rdpi 13558 pigt3 13559 abssinper 13561 coskpi 13563 cosq34lt1 13565 logsqrt 13637 2logb9irrALT 13686 lgsdir2lem2 13724 ex-fl 13760 ex-ceil 13761 ex-exp 13762 ex-fac 13763 |
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