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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 9191 |
. 2
| |
| 2 | 1 | recni 8169 |
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 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-11 1552 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-ext 2211 ax-resscn 8102 ax-1re 8104 ax-addrcl 8107 |
| This theorem depends on definitions: df-bi 117 df-nf 1507 df-sb 1809 df-clab 2216 df-cleq 2222 df-clel 2225 df-in 3203 df-ss 3210 df-2 9180 |
| This theorem is referenced by: 2ex 9193 2cnd 9194 2m1e1 9239 3m1e2 9241 2p2e4 9248 times2 9250 2div2e1 9254 1p2e3 9256 3p3e6 9264 4p3e7 9266 5p3e8 9269 6p3e9 9272 2t1e2 9275 2t2e4 9276 3t3e9 9279 2t0e0 9281 4d2e2 9282 2cnne0 9331 1mhlfehlf 9340 8th4div3 9341 halfpm6th 9342 2mulicn 9344 2muliap0 9346 halfcl 9348 half0 9350 2halves 9351 halfaddsub 9356 div4p1lem1div2 9376 3halfnz 9555 zneo 9559 nneoor 9560 zeo 9563 7p3e10 9663 4t4e16 9687 6t3e18 9693 7t7e49 9702 8t5e40 9706 9t9e81 9717 decbin0 9728 decbin2 9729 halfthird 9731 fztpval 10291 fz0tp 10330 fz0to4untppr 10332 fzo0to3tp 10437 2tnp1ge0ge0 10533 fldiv4lem1div2 10539 expubnd 10830 sq2 10869 sq4e2t8 10871 cu2 10872 subsq2 10881 binom2sub 10887 binom3 10891 zesq 10892 fac2 10965 fac3 10966 faclbnd2 10976 bcn2 10998 4bc2eq6 11008 crre 11383 addcj 11417 imval2 11420 resqrexlemover 11536 resqrexlemcalc1 11540 resqrexlemnm 11544 resqrexlemcvg 11545 amgm2 11644 arisum 12024 arisum2 12025 geo2sum2 12041 geo2lim 12042 geoihalfsum 12048 efcllemp 12184 ege2le3 12197 tanval2ap 12239 tanval3ap 12240 efi4p 12243 efival 12258 sinadd 12262 cosadd 12263 sinmul 12270 cosmul 12271 cos2tsin 12277 ef01bndlem 12282 sin01bnd 12283 cos01bnd 12284 cos1bnd 12285 cos2bnd 12286 cos01gt0 12289 sin02gt0 12290 sin4lt0 12293 cos12dec 12294 egt2lt3 12306 odd2np1lem 12398 odd2np1 12399 ltoddhalfle 12419 halfleoddlt 12420 opoe 12421 omoe 12422 opeo 12423 omeo 12424 nno 12432 nn0o 12433 flodddiv4 12462 bits0 12474 bitsfzolem 12480 0bits 12485 bitsinv1 12488 6gcd4e2 12531 3lcm2e6woprm 12623 6lcm4e12 12624 sqrt2irrlem 12698 oddpwdclemodd 12709 pythagtriplem1 12803 pythagtriplem12 12813 pythagtriplem14 12815 4sqlem11 12939 4sqlem12 12940 dec5dvds 12950 dec2nprm 12953 2exp5 12970 2exp6 12971 2exp7 12972 2exp8 12973 2exp11 12974 2exp16 12975 maxcncf 15304 mincncf 15305 coscn 15459 sinhalfpilem 15480 cospi 15489 ef2pi 15494 ef2kpi 15495 efper 15496 sinperlem 15497 sin2kpi 15500 cos2kpi 15501 sin2pim 15502 cos2pim 15503 ptolemy 15513 sincosq3sgn 15517 sincosq4sgn 15518 sinq12gt0 15519 cosq23lt0 15522 coseq00topi 15524 tangtx 15527 sincos4thpi 15529 sincos6thpi 15531 sincos3rdpi 15532 pigt3 15533 abssinper 15535 coskpi 15537 cosq34lt1 15539 logsqrt 15612 2logb9irrALT 15663 1sgm2ppw 15684 perfect1 15687 perfectlem1 15688 perfectlem2 15689 perfect 15690 lgsdir2lem2 15723 gausslemma2dlem6 15761 lgsquadlem1 15771 lgsquadlem2 15772 lgsquad2lem2 15776 m1lgs 15779 2lgslem3a 15787 2lgslem3b 15788 2lgslem3c 15789 2lgslem3d 15790 2lgsoddprmlem2 15800 2lgsoddprmlem3c 15803 2lgsoddprmlem3d 15804 ex-fl 16144 ex-ceil 16145 ex-exp 16146 ex-fac 16147 |
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