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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 7985 | . 2 | |
2 | 1 | recni 7039 | 1 |
Colors of variables: wff set class |
Syntax hints: wcel 1393 cc 6887 c2 7964 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 99 ax-ia2 100 ax-ia3 101 ax-5 1336 ax-7 1337 ax-gen 1338 ax-ie1 1382 ax-ie2 1383 ax-8 1395 ax-11 1397 ax-4 1400 ax-17 1419 ax-i9 1423 ax-ial 1427 ax-i5r 1428 ax-ext 2022 ax-resscn 6976 ax-1re 6978 ax-addrcl 6981 |
This theorem depends on definitions: df-bi 110 df-nf 1350 df-sb 1646 df-clab 2027 df-cleq 2033 df-clel 2036 df-in 2924 df-ss 2931 df-2 7973 |
This theorem is referenced by: 2ex 7987 2cnd 7988 2m1e1 8034 3m1e2 8036 2p2e4 8037 times2 8039 2div2e1 8042 1p2e3 8044 3p3e6 8053 4p3e7 8055 5p3e8 8058 6p3e9 8062 7p3e10 8065 2t1e2 8068 2t2e4 8069 3t3e9 8072 2t0e0 8075 4d2e2 8076 2cnne0 8134 1mhlfehlf 8143 8th4div3 8144 halfpm6th 8145 2mulicn 8147 2muliap0 8149 halfcl 8151 half0 8153 2halves 8154 halfaddsub 8159 div4p1lem1div2 8177 zneo 8339 nneoor 8340 zeo 8343 4t4e16 8440 6t3e18 8445 7t7e49 8454 8t5e40 8458 9t9e81 8469 decbin0 8470 decbin2 8471 fztpval 8945 fz0tp 8981 fzo0to3tp 9075 2tnp1ge0ge0 9143 expubnd 9311 sq2 9349 cu2 9351 subsq2 9359 binom2sub 9364 binom3 9366 zesq 9367 crre 9457 addcj 9491 imval2 9494 resqrexlemover 9608 resqrexlemcalc1 9612 resqrexlemnm 9616 resqrexlemcvg 9617 amgm2 9714 sqr2irrlem 9877 ex-fl 9895 ex-ceil 9896 |
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