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| Mirrors > Home > ILE Home > Th. List > 2cn | GIF version | ||
| Description: The number 2 is a complex number. (Contributed by NM, 30-Jul-2004.) |
| Ref | Expression |
|---|---|
| 2cn | ⊢ 2 ∈ ℂ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 2re 9196 | . 2 ⊢ 2 ∈ ℝ | |
| 2 | 1 | recni 8174 | 1 ⊢ 2 ∈ ℂ |
| Colors of variables: wff set class |
| Syntax hints: ∈ wcel 2200 ℂcc 8013 2c2 9177 |
| 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 8107 ax-1re 8109 ax-addrcl 8112 |
| 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 9185 |
| This theorem is referenced by: 2ex 9198 2cnd 9199 2m1e1 9244 3m1e2 9246 2p2e4 9253 times2 9255 2div2e1 9259 1p2e3 9261 3p3e6 9269 4p3e7 9271 5p3e8 9274 6p3e9 9277 2t1e2 9280 2t2e4 9281 3t3e9 9284 2t0e0 9286 4d2e2 9287 2cnne0 9336 1mhlfehlf 9345 8th4div3 9346 halfpm6th 9347 2mulicn 9349 2muliap0 9351 halfcl 9353 half0 9355 2halves 9356 halfaddsub 9361 div4p1lem1div2 9381 3halfnz 9560 zneo 9564 nneoor 9565 zeo 9568 7p3e10 9668 4t4e16 9692 6t3e18 9698 7t7e49 9707 8t5e40 9711 9t9e81 9722 decbin0 9733 decbin2 9734 halfthird 9736 fztpval 10296 fz0tp 10335 fz0to4untppr 10337 fzo0to3tp 10442 2tnp1ge0ge0 10538 fldiv4lem1div2 10544 expubnd 10835 sq2 10874 sq4e2t8 10876 cu2 10877 subsq2 10886 binom2sub 10892 binom3 10896 zesq 10897 fac2 10970 fac3 10971 faclbnd2 10981 bcn2 11003 4bc2eq6 11013 crre 11389 addcj 11423 imval2 11426 resqrexlemover 11542 resqrexlemcalc1 11546 resqrexlemnm 11550 resqrexlemcvg 11551 amgm2 11650 arisum 12030 arisum2 12031 geo2sum2 12047 geo2lim 12048 geoihalfsum 12054 efcllemp 12190 ege2le3 12203 tanval2ap 12245 tanval3ap 12246 efi4p 12249 efival 12264 sinadd 12268 cosadd 12269 sinmul 12276 cosmul 12277 cos2tsin 12283 ef01bndlem 12288 sin01bnd 12289 cos01bnd 12290 cos1bnd 12291 cos2bnd 12292 cos01gt0 12295 sin02gt0 12296 sin4lt0 12299 cos12dec 12300 egt2lt3 12312 odd2np1lem 12404 odd2np1 12405 ltoddhalfle 12425 halfleoddlt 12426 opoe 12427 omoe 12428 opeo 12429 omeo 12430 nno 12438 nn0o 12439 flodddiv4 12468 bits0 12480 bitsfzolem 12486 0bits 12491 bitsinv1 12494 6gcd4e2 12537 3lcm2e6woprm 12629 6lcm4e12 12630 sqrt2irrlem 12704 oddpwdclemodd 12715 pythagtriplem1 12809 pythagtriplem12 12819 pythagtriplem14 12821 4sqlem11 12945 4sqlem12 12946 dec5dvds 12956 dec2nprm 12959 2exp5 12976 2exp6 12977 2exp7 12978 2exp8 12979 2exp11 12980 2exp16 12981 maxcncf 15310 mincncf 15311 coscn 15465 sinhalfpilem 15486 cospi 15495 ef2pi 15500 ef2kpi 15501 efper 15502 sinperlem 15503 sin2kpi 15506 cos2kpi 15507 sin2pim 15508 cos2pim 15509 ptolemy 15519 sincosq3sgn 15523 sincosq4sgn 15524 sinq12gt0 15525 cosq23lt0 15528 coseq00topi 15530 tangtx 15533 sincos4thpi 15535 sincos6thpi 15537 sincos3rdpi 15538 pigt3 15539 abssinper 15541 coskpi 15543 cosq34lt1 15545 logsqrt 15618 2logb9irrALT 15669 1sgm2ppw 15690 perfect1 15693 perfectlem1 15694 perfectlem2 15695 perfect 15696 lgsdir2lem2 15729 gausslemma2dlem6 15767 lgsquadlem1 15777 lgsquadlem2 15778 lgsquad2lem2 15782 m1lgs 15785 2lgslem3a 15793 2lgslem3b 15794 2lgslem3c 15795 2lgslem3d 15796 2lgsoddprmlem2 15806 2lgsoddprmlem3c 15809 2lgsoddprmlem3d 15810 ex-fl 16198 ex-ceil 16199 ex-exp 16200 ex-fac 16201 |
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