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Mirrors > Home > ILE Home > Th. List > 9cn | Unicode version |
Description: The number 9 is complex. (Contributed by David A. Wheeler, 8-Dec-2018.) |
Ref | Expression |
---|---|
9cn |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 9re 8800 | . 2 | |
2 | 1 | recni 7771 | 1 |
Colors of variables: wff set class |
Syntax hints: wcel 1480 cc 7611 c9 8771 |
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 2119 ax-resscn 7705 ax-1re 7707 ax-addrcl 7710 |
This theorem depends on definitions: df-bi 116 df-nf 1437 df-sb 1736 df-clab 2124 df-cleq 2130 df-clel 2133 df-in 3072 df-ss 3079 df-2 8772 df-3 8773 df-4 8774 df-5 8775 df-6 8776 df-7 8777 df-8 8778 df-9 8779 |
This theorem is referenced by: 10m1e9 9270 9t2e18 9296 9t8e72 9302 9t9e81 9303 9t11e99 9304 0.999... 11283 cos2bnd 11456 3dvdsdec 11551 3dvds2dec 11552 |
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