| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 9206 | . 2 ⊢ 2 ∈ ℝ | |
| 2 | 1 | recni 8184 | 1 ⊢ 2 ∈ ℂ |
| Colors of variables: wff set class |
| Syntax hints: ∈ wcel 2200 ℂcc 8023 2c2 9187 |
| 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 8117 ax-1re 8119 ax-addrcl 8122 |
| 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 3204 df-ss 3211 df-2 9195 |
| This theorem is referenced by: 2ex 9208 2cnd 9209 2m1e1 9254 3m1e2 9256 2p2e4 9263 times2 9265 2div2e1 9269 1p2e3 9271 3p3e6 9279 4p3e7 9281 5p3e8 9284 6p3e9 9287 2t1e2 9290 2t2e4 9291 3t3e9 9294 2t0e0 9296 4d2e2 9297 2cnne0 9346 1mhlfehlf 9355 8th4div3 9356 halfpm6th 9357 2mulicn 9359 2muliap0 9361 halfcl 9363 half0 9365 2halves 9366 halfaddsub 9371 div4p1lem1div2 9391 3halfnz 9570 zneo 9574 nneoor 9575 zeo 9578 7p3e10 9678 4t4e16 9702 6t3e18 9708 7t7e49 9717 8t5e40 9721 9t9e81 9732 decbin0 9743 decbin2 9744 halfthird 9746 fztpval 10311 fz0tp 10350 fz0to4untppr 10352 fzo0to3tp 10457 2tnp1ge0ge0 10554 fldiv4lem1div2 10560 expubnd 10851 sq2 10890 sq4e2t8 10892 cu2 10893 subsq2 10902 binom2sub 10908 binom3 10912 zesq 10913 fac2 10986 fac3 10987 faclbnd2 10997 bcn2 11019 4bc2eq6 11029 crre 11411 addcj 11445 imval2 11448 resqrexlemover 11564 resqrexlemcalc1 11568 resqrexlemnm 11572 resqrexlemcvg 11573 amgm2 11672 arisum 12052 arisum2 12053 geo2sum2 12069 geo2lim 12070 geoihalfsum 12076 efcllemp 12212 ege2le3 12225 tanval2ap 12267 tanval3ap 12268 efi4p 12271 efival 12286 sinadd 12290 cosadd 12291 sinmul 12298 cosmul 12299 cos2tsin 12305 ef01bndlem 12310 sin01bnd 12311 cos01bnd 12312 cos1bnd 12313 cos2bnd 12314 cos01gt0 12317 sin02gt0 12318 sin4lt0 12321 cos12dec 12322 egt2lt3 12334 odd2np1lem 12426 odd2np1 12427 ltoddhalfle 12447 halfleoddlt 12448 opoe 12449 omoe 12450 opeo 12451 omeo 12452 nno 12460 nn0o 12461 flodddiv4 12490 bits0 12502 bitsfzolem 12508 0bits 12513 bitsinv1 12516 6gcd4e2 12559 3lcm2e6woprm 12651 6lcm4e12 12652 sqrt2irrlem 12726 oddpwdclemodd 12737 pythagtriplem1 12831 pythagtriplem12 12841 pythagtriplem14 12843 4sqlem11 12967 4sqlem12 12968 dec5dvds 12978 dec2nprm 12981 2exp5 12998 2exp6 12999 2exp7 13000 2exp8 13001 2exp11 13002 2exp16 13003 maxcncf 15332 mincncf 15333 coscn 15487 sinhalfpilem 15508 cospi 15517 ef2pi 15522 ef2kpi 15523 efper 15524 sinperlem 15525 sin2kpi 15528 cos2kpi 15529 sin2pim 15530 cos2pim 15531 ptolemy 15541 sincosq3sgn 15545 sincosq4sgn 15546 sinq12gt0 15547 cosq23lt0 15550 coseq00topi 15552 tangtx 15555 sincos4thpi 15557 sincos6thpi 15559 sincos3rdpi 15560 pigt3 15561 abssinper 15563 coskpi 15565 cosq34lt1 15567 logsqrt 15640 2logb9irrALT 15691 1sgm2ppw 15712 perfect1 15715 perfectlem1 15716 perfectlem2 15717 perfect 15718 lgsdir2lem2 15751 gausslemma2dlem6 15789 lgsquadlem1 15799 lgsquadlem2 15800 lgsquad2lem2 15804 m1lgs 15807 2lgslem3a 15815 2lgslem3b 15816 2lgslem3c 15817 2lgslem3d 15818 2lgsoddprmlem2 15828 2lgsoddprmlem3c 15831 2lgsoddprmlem3d 15832 clwwlknonex2 16248 ex-fl 16271 ex-ceil 16272 ex-exp 16273 ex-fac 16274 |
| Copyright terms: Public domain | W3C validator |