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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 9255 |
. 2
| |
| 2 | 1 | recni 8234 |
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 2213 ax-resscn 8167 ax-1re 8169 ax-addrcl 8172 |
| This theorem depends on definitions: df-bi 117 df-nf 1510 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-in 3207 df-ss 3214 df-2 9244 |
| This theorem is referenced by: 2ex 9257 2cnd 9258 2m1e1 9303 3m1e2 9305 2p2e4 9312 times2 9314 2div2e1 9318 1p2e3 9320 3p3e6 9328 4p3e7 9330 5p3e8 9333 6p3e9 9336 2t1e2 9339 2t2e4 9340 3t3e9 9343 2t0e0 9345 4d2e2 9346 2cnne0 9395 1mhlfehlf 9404 8th4div3 9405 halfpm6th 9406 2mulicn 9408 2muliap0 9410 halfcl 9412 half0 9414 2halves 9415 halfaddsub 9420 div4p1lem1div2 9440 3halfnz 9621 zneo 9625 nneoor 9626 zeo 9629 7p3e10 9729 4t4e16 9753 6t3e18 9759 7t7e49 9768 8t5e40 9772 9t9e81 9783 decbin0 9794 decbin2 9795 halfthird 9797 fztpval 10363 fz0tp 10402 fz0to4untppr 10404 fzo0to3tp 10510 2tnp1ge0ge0 10607 fldiv4lem1div2 10613 expubnd 10904 sq2 10943 sq4e2t8 10945 cu2 10946 subsq2 10955 binom2sub 10961 binom3 10965 zesq 10966 fac2 11039 fac3 11040 faclbnd2 11050 bcn2 11072 4bc2eq6 11082 crre 11480 addcj 11514 imval2 11517 resqrexlemover 11633 resqrexlemcalc1 11637 resqrexlemnm 11641 resqrexlemcvg 11642 amgm2 11741 arisum 12122 arisum2 12123 geo2sum2 12139 geo2lim 12140 geoihalfsum 12146 efcllemp 12282 ege2le3 12295 tanval2ap 12337 tanval3ap 12338 efi4p 12341 efival 12356 sinadd 12360 cosadd 12361 sinmul 12368 cosmul 12369 cos2tsin 12375 ef01bndlem 12380 sin01bnd 12381 cos01bnd 12382 cos1bnd 12383 cos2bnd 12384 cos01gt0 12387 sin02gt0 12388 sin4lt0 12391 cos12dec 12392 egt2lt3 12404 odd2np1lem 12496 odd2np1 12497 ltoddhalfle 12517 halfleoddlt 12518 opoe 12519 omoe 12520 opeo 12521 omeo 12522 nno 12530 nn0o 12531 flodddiv4 12560 bits0 12572 bitsfzolem 12578 0bits 12583 bitsinv1 12586 6gcd4e2 12629 3lcm2e6woprm 12721 6lcm4e12 12722 sqrt2irrlem 12796 oddpwdclemodd 12807 pythagtriplem1 12901 pythagtriplem12 12911 pythagtriplem14 12913 4sqlem11 13037 4sqlem12 13038 dec5dvds 13048 dec2nprm 13051 2exp5 13068 2exp6 13069 2exp7 13070 2exp8 13071 2exp11 13072 2exp16 13073 maxcncf 15409 mincncf 15410 coscn 15564 sinhalfpilem 15585 cospi 15594 ef2pi 15599 ef2kpi 15600 efper 15601 sinperlem 15602 sin2kpi 15605 cos2kpi 15606 sin2pim 15607 cos2pim 15608 ptolemy 15618 sincosq3sgn 15622 sincosq4sgn 15623 sinq12gt0 15624 cosq23lt0 15627 coseq00topi 15629 tangtx 15632 sincos4thpi 15634 sincos6thpi 15636 sincos3rdpi 15637 pigt3 15638 abssinper 15640 coskpi 15642 cosq34lt1 15644 logsqrt 15717 2logb9irrALT 15768 1sgm2ppw 15792 perfect1 15795 perfectlem1 15796 perfectlem2 15797 perfect 15798 lgsdir2lem2 15831 gausslemma2dlem6 15869 lgsquadlem1 15879 lgsquadlem2 15880 lgsquad2lem2 15884 m1lgs 15887 2lgslem3a 15895 2lgslem3b 15896 2lgslem3c 15897 2lgslem3d 15898 2lgsoddprmlem2 15908 2lgsoddprmlem3c 15911 2lgsoddprmlem3d 15912 clwwlknonex2 16363 ex-fl 16422 ex-ceil 16423 ex-exp 16424 ex-fac 16425 |
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