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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 9213 |
. 2
| |
| 2 | 1 | recni 8191 |
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 8124 ax-1re 8126 ax-addrcl 8129 |
| 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 9202 |
| This theorem is referenced by: 2ex 9215 2cnd 9216 2m1e1 9261 3m1e2 9263 2p2e4 9270 times2 9272 2div2e1 9276 1p2e3 9278 3p3e6 9286 4p3e7 9288 5p3e8 9291 6p3e9 9294 2t1e2 9297 2t2e4 9298 3t3e9 9301 2t0e0 9303 4d2e2 9304 2cnne0 9353 1mhlfehlf 9362 8th4div3 9363 halfpm6th 9364 2mulicn 9366 2muliap0 9368 halfcl 9370 half0 9372 2halves 9373 halfaddsub 9378 div4p1lem1div2 9398 3halfnz 9577 zneo 9581 nneoor 9582 zeo 9585 7p3e10 9685 4t4e16 9709 6t3e18 9715 7t7e49 9724 8t5e40 9728 9t9e81 9739 decbin0 9750 decbin2 9751 halfthird 9753 fztpval 10318 fz0tp 10357 fz0to4untppr 10359 fzo0to3tp 10465 2tnp1ge0ge0 10562 fldiv4lem1div2 10568 expubnd 10859 sq2 10898 sq4e2t8 10900 cu2 10901 subsq2 10910 binom2sub 10916 binom3 10920 zesq 10921 fac2 10994 fac3 10995 faclbnd2 11005 bcn2 11027 4bc2eq6 11037 crre 11435 addcj 11469 imval2 11472 resqrexlemover 11588 resqrexlemcalc1 11592 resqrexlemnm 11596 resqrexlemcvg 11597 amgm2 11696 arisum 12077 arisum2 12078 geo2sum2 12094 geo2lim 12095 geoihalfsum 12101 efcllemp 12237 ege2le3 12250 tanval2ap 12292 tanval3ap 12293 efi4p 12296 efival 12311 sinadd 12315 cosadd 12316 sinmul 12323 cosmul 12324 cos2tsin 12330 ef01bndlem 12335 sin01bnd 12336 cos01bnd 12337 cos1bnd 12338 cos2bnd 12339 cos01gt0 12342 sin02gt0 12343 sin4lt0 12346 cos12dec 12347 egt2lt3 12359 odd2np1lem 12451 odd2np1 12452 ltoddhalfle 12472 halfleoddlt 12473 opoe 12474 omoe 12475 opeo 12476 omeo 12477 nno 12485 nn0o 12486 flodddiv4 12515 bits0 12527 bitsfzolem 12533 0bits 12538 bitsinv1 12541 6gcd4e2 12584 3lcm2e6woprm 12676 6lcm4e12 12677 sqrt2irrlem 12751 oddpwdclemodd 12762 pythagtriplem1 12856 pythagtriplem12 12866 pythagtriplem14 12868 4sqlem11 12992 4sqlem12 12993 dec5dvds 13003 dec2nprm 13006 2exp5 13023 2exp6 13024 2exp7 13025 2exp8 13026 2exp11 13027 2exp16 13028 maxcncf 15358 mincncf 15359 coscn 15513 sinhalfpilem 15534 cospi 15543 ef2pi 15548 ef2kpi 15549 efper 15550 sinperlem 15551 sin2kpi 15554 cos2kpi 15555 sin2pim 15556 cos2pim 15557 ptolemy 15567 sincosq3sgn 15571 sincosq4sgn 15572 sinq12gt0 15573 cosq23lt0 15576 coseq00topi 15578 tangtx 15581 sincos4thpi 15583 sincos6thpi 15585 sincos3rdpi 15586 pigt3 15587 abssinper 15589 coskpi 15591 cosq34lt1 15593 logsqrt 15666 2logb9irrALT 15717 1sgm2ppw 15738 perfect1 15741 perfectlem1 15742 perfectlem2 15743 perfect 15744 lgsdir2lem2 15777 gausslemma2dlem6 15815 lgsquadlem1 15825 lgsquadlem2 15826 lgsquad2lem2 15830 m1lgs 15833 2lgslem3a 15841 2lgslem3b 15842 2lgslem3c 15843 2lgslem3d 15844 2lgsoddprmlem2 15854 2lgsoddprmlem3c 15857 2lgsoddprmlem3d 15858 clwwlknonex2 16309 ex-fl 16368 ex-ceil 16369 ex-exp 16370 ex-fac 16371 |
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