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Mirrors > Home > ILE Home > Th. List > 4cn | Unicode version |
Description: The number 4 is a complex number. (Contributed by David A. Wheeler, 7-Jul-2016.) |
Ref | Expression |
---|---|
4cn |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 4re 8797 | . 2 | |
2 | 1 | recni 7778 | 1 |
Colors of variables: wff set class |
Syntax hints: wcel 1480 cc 7618 c4 8773 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-5 1423 ax-7 1424 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-11 1484 ax-4 1487 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2121 ax-resscn 7712 ax-1re 7714 ax-addrcl 7717 |
This theorem depends on definitions: df-bi 116 df-nf 1437 df-sb 1736 df-clab 2126 df-cleq 2132 df-clel 2135 df-in 3077 df-ss 3084 df-2 8779 df-3 8780 df-4 8781 |
This theorem is referenced by: 5m1e4 8842 4p2e6 8863 4p3e7 8864 4p4e8 8865 4t2e8 8878 4d2e2 8880 8th4div3 8939 div4p1lem1div2 8973 5p5e10 9252 4t4e16 9280 6t5e30 9288 fzo0to42pr 9997 fldiv4p1lem1div2 10078 sq4e2t8 10390 sqoddm1div8 10444 4bc3eq4 10519 4bc2eq6 10520 resqrexlemover 10782 resqrexlemcalc1 10786 resqrexlemcalc3 10788 cos2bnd 11467 flodddiv4 11631 6gcd4e2 11683 6lcm4e12 11768 dveflem 12855 sincosq4sgn 12910 cosq23lt0 12914 sincos6thpi 12923 ex-exp 12939 ex-fac 12940 ex-bc 12941 |
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