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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 9212 |
. 2
| |
| 2 | 1 | recni 8190 |
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 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-11 1554 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-ext 2213 ax-resscn 8123 ax-1re 8125 ax-addrcl 8128 |
| This theorem depends on definitions: df-bi 117 df-nf 1509 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-in 3206 df-ss 3213 df-2 9201 |
| This theorem is referenced by: 2ex 9214 2cnd 9215 2m1e1 9260 3m1e2 9262 2p2e4 9269 times2 9271 2div2e1 9275 1p2e3 9277 3p3e6 9285 4p3e7 9287 5p3e8 9290 6p3e9 9293 2t1e2 9296 2t2e4 9297 3t3e9 9300 2t0e0 9302 4d2e2 9303 2cnne0 9352 1mhlfehlf 9361 8th4div3 9362 halfpm6th 9363 2mulicn 9365 2muliap0 9367 halfcl 9369 half0 9371 2halves 9372 halfaddsub 9377 div4p1lem1div2 9397 3halfnz 9576 zneo 9580 nneoor 9581 zeo 9584 7p3e10 9684 4t4e16 9708 6t3e18 9714 7t7e49 9723 8t5e40 9727 9t9e81 9738 decbin0 9749 decbin2 9750 halfthird 9752 fztpval 10317 fz0tp 10356 fz0to4untppr 10358 fzo0to3tp 10463 2tnp1ge0ge0 10560 fldiv4lem1div2 10566 expubnd 10857 sq2 10896 sq4e2t8 10898 cu2 10899 subsq2 10908 binom2sub 10914 binom3 10918 zesq 10919 fac2 10992 fac3 10993 faclbnd2 11003 bcn2 11025 4bc2eq6 11035 crre 11417 addcj 11451 imval2 11454 resqrexlemover 11570 resqrexlemcalc1 11574 resqrexlemnm 11578 resqrexlemcvg 11579 amgm2 11678 arisum 12058 arisum2 12059 geo2sum2 12075 geo2lim 12076 geoihalfsum 12082 efcllemp 12218 ege2le3 12231 tanval2ap 12273 tanval3ap 12274 efi4p 12277 efival 12292 sinadd 12296 cosadd 12297 sinmul 12304 cosmul 12305 cos2tsin 12311 ef01bndlem 12316 sin01bnd 12317 cos01bnd 12318 cos1bnd 12319 cos2bnd 12320 cos01gt0 12323 sin02gt0 12324 sin4lt0 12327 cos12dec 12328 egt2lt3 12340 odd2np1lem 12432 odd2np1 12433 ltoddhalfle 12453 halfleoddlt 12454 opoe 12455 omoe 12456 opeo 12457 omeo 12458 nno 12466 nn0o 12467 flodddiv4 12496 bits0 12508 bitsfzolem 12514 0bits 12519 bitsinv1 12522 6gcd4e2 12565 3lcm2e6woprm 12657 6lcm4e12 12658 sqrt2irrlem 12732 oddpwdclemodd 12743 pythagtriplem1 12837 pythagtriplem12 12847 pythagtriplem14 12849 4sqlem11 12973 4sqlem12 12974 dec5dvds 12984 dec2nprm 12987 2exp5 13004 2exp6 13005 2exp7 13006 2exp8 13007 2exp11 13008 2exp16 13009 maxcncf 15338 mincncf 15339 coscn 15493 sinhalfpilem 15514 cospi 15523 ef2pi 15528 ef2kpi 15529 efper 15530 sinperlem 15531 sin2kpi 15534 cos2kpi 15535 sin2pim 15536 cos2pim 15537 ptolemy 15547 sincosq3sgn 15551 sincosq4sgn 15552 sinq12gt0 15553 cosq23lt0 15556 coseq00topi 15558 tangtx 15561 sincos4thpi 15563 sincos6thpi 15565 sincos3rdpi 15566 pigt3 15567 abssinper 15569 coskpi 15571 cosq34lt1 15573 logsqrt 15646 2logb9irrALT 15697 1sgm2ppw 15718 perfect1 15721 perfectlem1 15722 perfectlem2 15723 perfect 15724 lgsdir2lem2 15757 gausslemma2dlem6 15795 lgsquadlem1 15805 lgsquadlem2 15806 lgsquad2lem2 15810 m1lgs 15813 2lgslem3a 15821 2lgslem3b 15822 2lgslem3c 15823 2lgslem3d 15824 2lgsoddprmlem2 15834 2lgsoddprmlem3c 15837 2lgsoddprmlem3d 15838 clwwlknonex2 16289 ex-fl 16321 ex-ceil 16322 ex-exp 16323 ex-fac 16324 |
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