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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 8814 | . 2 ⊢ 2 ∈ ℝ | |
2 | 1 | recni 7802 | 1 ⊢ 2 ∈ ℂ |
Colors of variables: wff set class |
Syntax hints: ∈ wcel 1481 ℂcc 7642 2c2 8795 |
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 1424 ax-7 1425 ax-gen 1426 ax-ie1 1470 ax-ie2 1471 ax-8 1483 ax-11 1485 ax-4 1488 ax-17 1507 ax-i9 1511 ax-ial 1515 ax-i5r 1516 ax-ext 2122 ax-resscn 7736 ax-1re 7738 ax-addrcl 7741 |
This theorem depends on definitions: df-bi 116 df-nf 1438 df-sb 1737 df-clab 2127 df-cleq 2133 df-clel 2136 df-in 3082 df-ss 3089 df-2 8803 |
This theorem is referenced by: 2ex 8816 2cnd 8817 2m1e1 8862 3m1e2 8864 2p2e4 8871 times2 8873 2div2e1 8876 1p2e3 8878 3p3e6 8886 4p3e7 8888 5p3e8 8891 6p3e9 8894 2t1e2 8897 2t2e4 8898 3t3e9 8901 2t0e0 8903 4d2e2 8904 2cnne0 8953 1mhlfehlf 8962 8th4div3 8963 halfpm6th 8964 2mulicn 8966 2muliap0 8968 halfcl 8970 half0 8972 2halves 8973 halfaddsub 8978 div4p1lem1div2 8997 3halfnz 9172 zneo 9176 nneoor 9177 zeo 9180 7p3e10 9280 4t4e16 9304 6t3e18 9310 7t7e49 9319 8t5e40 9323 9t9e81 9334 decbin0 9345 decbin2 9346 halfthird 9348 fztpval 9894 fz0tp 9932 fzo0to3tp 10027 2tnp1ge0ge0 10105 expubnd 10381 sq2 10419 sq4e2t8 10421 cu2 10422 subsq2 10431 binom2sub 10436 binom3 10440 zesq 10441 fac2 10509 fac3 10510 faclbnd2 10520 bcn2 10542 4bc2eq6 10552 crre 10661 addcj 10695 imval2 10698 resqrexlemover 10814 resqrexlemcalc1 10818 resqrexlemnm 10822 resqrexlemcvg 10823 amgm2 10922 arisum 11299 arisum2 11300 geo2sum2 11316 geo2lim 11317 geoihalfsum 11323 efcllemp 11401 ege2le3 11414 tanval2ap 11456 tanval3ap 11457 efi4p 11460 efival 11475 sinadd 11479 cosadd 11480 sinmul 11487 cosmul 11488 cos2tsin 11494 ef01bndlem 11499 sin01bnd 11500 cos01bnd 11501 cos1bnd 11502 cos2bnd 11503 cos01gt0 11505 sin02gt0 11506 sin4lt0 11509 cos12dec 11510 egt2lt3 11522 odd2np1lem 11605 odd2np1 11606 ltoddhalfle 11626 halfleoddlt 11627 opoe 11628 omoe 11629 opeo 11630 omeo 11631 nno 11639 nn0o 11640 flodddiv4 11667 6gcd4e2 11719 3lcm2e6woprm 11803 6lcm4e12 11804 sqrt2irrlem 11875 oddpwdclemodd 11886 coscn 12899 sinhalfpilem 12920 cospi 12929 ef2pi 12934 ef2kpi 12935 efper 12936 sinperlem 12937 sin2kpi 12940 cos2kpi 12941 sin2pim 12942 cos2pim 12943 ptolemy 12953 sincosq3sgn 12957 sincosq4sgn 12958 sinq12gt0 12959 cosq23lt0 12962 coseq00topi 12964 tangtx 12967 sincos4thpi 12969 sincos6thpi 12971 sincos3rdpi 12972 pigt3 12973 abssinper 12975 coskpi 12977 cosq34lt1 12979 logsqrt 13051 2logb9irrALT 13099 ex-fl 13108 ex-ceil 13109 ex-exp 13110 ex-fac 13111 |
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