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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 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 9re 9071 |
. 2
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2 | 1 | recni 8033 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() |
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 1458 ax-7 1459 ax-gen 1460 ax-ie1 1504 ax-ie2 1505 ax-8 1515 ax-11 1517 ax-4 1521 ax-17 1537 ax-i9 1541 ax-ial 1545 ax-i5r 1546 ax-ext 2175 ax-resscn 7966 ax-1re 7968 ax-addrcl 7971 |
This theorem depends on definitions: df-bi 117 df-nf 1472 df-sb 1774 df-clab 2180 df-cleq 2186 df-clel 2189 df-in 3160 df-ss 3167 df-2 9043 df-3 9044 df-4 9045 df-5 9046 df-6 9047 df-7 9048 df-8 9049 df-9 9050 |
This theorem is referenced by: 10m1e9 9546 9t2e18 9572 9t8e72 9578 9t9e81 9579 9t11e99 9580 0.999... 11667 cos2bnd 11906 3dvdsdec 12009 3dvds2dec 12010 |
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