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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 9377 |
. 2
| |
| 2 | 1 | recni 8339 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-11 1559 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 ax-resscn 8272 ax-1re 8274 ax-addrcl 8277 |
| This proof depends on definitions: df-bi 117 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-in 3226 df-ss 3233 df-2 9366 |
| This theorem is used by: 2ex 9379 2cnd 9380 2m1e1 9425 3m1e2 9427 2p2e4 9434 times2 9436 2div2e1 9440 1p2e3 9442 3p3e6 9450 4p3e7 9452 5p3e8 9455 6p3e9 9458 2t1e2 9461 2t2e4 9462 2t3e6 9465 3t3e9 9466 2t4e8 9468 2t0e0 9469 4d2e2 9470 2cnne0 9519 1mhlfehlf 9528 8th4div3 9529 halfpm6th 9530 2mulicn 9532 2muliap0 9534 halfcl 9536 half0 9538 2halves 9539 halfaddsub 9544 div4p1lem1div2 9564 3halfnz 9748 zneo 9752 nneoor 9753 zeo 9756 7p3e10 9861 4t4e16 9885 6t3e18 9891 7t7e49 9900 8t5e40 9904 9t9e81 9915 decbin0 9926 decbin2 9927 halfthird 9929 fztpval 10501 fz0tp 10540 fz0to4untppr 10542 fzo0to3tp 10648 2tnp1ge0ge0 10751 fldiv4lem1div2 10757 expubnd 11048 sq2 11087 sq4e2t8 11089 cu2 11090 subsq2 11099 binom2sub 11105 binom3 11109 zesq 11111 fac2 11185 fac3 11186 faclbnd2 11196 bcn2 11218 4bc2eq6 11229 crre 11638 addcj 11672 imval2 11675 resqrexlemover 11792 resqrexlemcalc1 11796 resqrexlemnm 11800 resqrexlemcvg 11801 amgm2 11901 arisum 12284 arisum2 12285 geo2sum2 12301 geo2lim 12302 geoihalfsum 12308 efcllemp 12444 ege2le3 12457 tanval2ap 12499 tanval3ap 12500 efi4p 12503 efival 12518 sinadd 12522 cosadd 12523 sinmul 12530 cosmul 12531 cos2tsin 12537 ef01bndlem 12542 sin01bnd 12543 cos01bnd 12544 cos1bnd 12545 cos2bnd 12546 cos01gt0 12549 sin02gt0 12550 sin4lt0 12553 cos12dec 12554 egt2lt3 12566 odd2np1lem 12658 odd2np1 12659 ltoddhalfle 12679 halfleoddlt 12680 opoe 12681 omoe 12682 opeo 12683 omeo 12684 nno 12692 nn0o 12693 flodddiv4 12722 bits0 12734 bitsfzolem 12740 0bits 12745 bitsinv1 12748 6gcd4e2 12791 3lcm2e6woprm 12883 6lcm4e12 12884 sqrt2irrlem 12959 pythagtriplem1 13067 pythagtriplem12 13077 pythagtriplem14 13079 4sqlem11 13203 4sqlem12 13204 dec5dvds 13214 dec2nprm 13217 2exp5 13235 2exp6 13236 2exp7 13237 2exp8 13238 2exp11 13239 2exp16 13240 10nprm 13251 11prm 13252 13prm 13253 37prm 13258 43prm 13259 83prm 13260 139prm 13261 163prm 13262 317prm 13263 631prm 13264 1259lem1 13265 1259lem2 13266 1259lem3 13267 1259lem4 13268 1259lem5 13269 1259prm 13270 ballotfilem2 13280 ballotfilemth 13333 maxcncf 15807 mincncf 15808 coscn 15962 sinhalfpilem 15984 cospi 15993 ef2pi 15998 ef2kpi 15999 efper 16000 sinperlem 16001 sin2kpi 16004 cos2kpi 16005 sin2pim 16006 cos2pim 16007 ptolemy 16017 sincosq3sgn 16021 sincosq4sgn 16022 sinq12gt0 16023 cosq23lt0 16026 coseq00topi 16028 tangtx 16031 sincos4thpi 16033 sincos6thpi 16035 sincos3rdpi 16036 pigt3 16037 abssinper 16039 coskpi 16041 cosq34lt1 16043 logsqrt 16120 2logb9irrALT 16171 log2tlbndlog2 16181 log2ublem2 16183 log2ublem3 16184 log2ublog2 16185 birthdaylog2 16189 1sgm2ppw 16250 ppiqub 16254 chtublem 16256 chtqub 16257 perfect1 16259 perfectlem1 16260 perfectlem2 16261 perfect 16262 bcmax 16266 bcp1ctr 16267 bclbnd 16268 bpos1lem 16270 bpos1 16271 bposlem1 16272 bposlem2 16273 bposlem4 16275 bposlem5 16276 bposlem6 16277 bposlem8 16279 bposlem9 16280 lgsdir2lem2 16314 gausslemma2dlem6 16352 lgsquadlem1 16362 lgsquadlem2 16363 lgsquad2lem2 16367 m1lgs 16370 2lgslem3a 16378 2lgslem3b 16379 2lgslem3c 16380 2lgslem3d 16381 2lgsoddprmlem2 16391 2lgsoddprmlem3c 16394 2lgsoddprmlem3d 16395 clwwlknonex2 16846 ex-fl 16905 ex-ceil 16906 ex-exp 16907 ex-fac 16908 |
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