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| Mirrors > Home > ILE Home > Th. List > 2cn | Unicode version | ||
| Description: The number 2 is a complex number. (Contributed by NM, 30-Jul-2004.) |
| Ref | Expression |
|---|---|
| 2cn |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 2re 9307 |
. 2
| |
| 2 | 1 | recni 8286 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| 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 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-11 1555 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-ext 2214 ax-resscn 8219 ax-1re 8221 ax-addrcl 8224 |
| This theorem depends on definitions: df-bi 117 df-nf 1510 df-sb 1812 df-clab 2219 df-cleq 2225 df-clel 2228 df-in 3217 df-ss 3224 df-2 9296 |
| This theorem is referenced by: 2ex 9309 2cnd 9310 2m1e1 9355 3m1e2 9357 2p2e4 9364 times2 9366 2div2e1 9370 1p2e3 9372 3p3e6 9380 4p3e7 9382 5p3e8 9385 6p3e9 9388 2t1e2 9391 2t2e4 9392 3t3e9 9395 2t0e0 9397 4d2e2 9398 2cnne0 9447 1mhlfehlf 9456 8th4div3 9457 halfpm6th 9458 2mulicn 9460 2muliap0 9462 halfcl 9464 half0 9466 2halves 9467 halfaddsub 9472 div4p1lem1div2 9492 3halfnz 9675 zneo 9679 nneoor 9680 zeo 9683 7p3e10 9783 4t4e16 9807 6t3e18 9813 7t7e49 9822 8t5e40 9826 9t9e81 9837 decbin0 9848 decbin2 9849 halfthird 9851 fztpval 10417 fz0tp 10456 fz0to4untppr 10458 fzo0to3tp 10564 2tnp1ge0ge0 10661 fldiv4lem1div2 10667 expubnd 10958 sq2 10997 sq4e2t8 10999 cu2 11000 subsq2 11009 binom2sub 11015 binom3 11019 zesq 11020 fac2 11093 fac3 11094 faclbnd2 11104 bcn2 11126 4bc2eq6 11137 crre 11542 addcj 11576 imval2 11579 resqrexlemover 11695 resqrexlemcalc1 11699 resqrexlemnm 11703 resqrexlemcvg 11704 amgm2 11803 arisum 12184 arisum2 12185 geo2sum2 12201 geo2lim 12202 geoihalfsum 12208 efcllemp 12344 ege2le3 12357 tanval2ap 12399 tanval3ap 12400 efi4p 12403 efival 12418 sinadd 12422 cosadd 12423 sinmul 12430 cosmul 12431 cos2tsin 12437 ef01bndlem 12442 sin01bnd 12443 cos01bnd 12444 cos1bnd 12445 cos2bnd 12446 cos01gt0 12449 sin02gt0 12450 sin4lt0 12453 cos12dec 12454 egt2lt3 12466 odd2np1lem 12558 odd2np1 12559 ltoddhalfle 12579 halfleoddlt 12580 opoe 12581 omoe 12582 opeo 12583 omeo 12584 nno 12592 nn0o 12593 flodddiv4 12622 bits0 12634 bitsfzolem 12640 0bits 12645 bitsinv1 12648 6gcd4e2 12691 3lcm2e6woprm 12783 6lcm4e12 12784 sqrt2irrlem 12858 oddpwdclemodd 12869 pythagtriplem1 12963 pythagtriplem12 12973 pythagtriplem14 12975 4sqlem11 13099 4sqlem12 13100 dec5dvds 13110 dec2nprm 13113 2exp5 13130 2exp6 13131 2exp7 13132 2exp8 13133 2exp11 13134 2exp16 13135 ballotfilem2 13142 maxcncf 15480 mincncf 15481 coscn 15635 sinhalfpilem 15656 cospi 15665 ef2pi 15670 ef2kpi 15671 efper 15672 sinperlem 15673 sin2kpi 15676 cos2kpi 15677 sin2pim 15678 cos2pim 15679 ptolemy 15689 sincosq3sgn 15693 sincosq4sgn 15694 sinq12gt0 15695 cosq23lt0 15698 coseq00topi 15700 tangtx 15703 sincos4thpi 15705 sincos6thpi 15707 sincos3rdpi 15708 pigt3 15709 abssinper 15711 coskpi 15713 cosq34lt1 15715 logsqrt 15788 2logb9irrALT 15839 1sgm2ppw 15863 perfect1 15866 perfectlem1 15867 perfectlem2 15868 perfect 15869 lgsdir2lem2 15902 gausslemma2dlem6 15940 lgsquadlem1 15950 lgsquadlem2 15951 lgsquad2lem2 15955 m1lgs 15958 2lgslem3a 15966 2lgslem3b 15967 2lgslem3c 15968 2lgslem3d 15969 2lgsoddprmlem2 15979 2lgsoddprmlem3c 15982 2lgsoddprmlem3d 15983 clwwlknonex2 16434 ex-fl 16493 ex-ceil 16494 ex-exp 16495 ex-fac 16496 |
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