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Mirrors > Home > ILE Home > Th. List > df-9 | Unicode version |
Description: Define the number 9. (Contributed by NM, 27-May-1999.) |
Ref | Expression |
---|---|
df-9 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | c9 8953 |
. 2
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2 | c8 8952 |
. . 3
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3 | c1 7790 |
. . 3
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4 | caddc 7792 |
. . 3
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5 | 2, 3, 4 | co 5868 |
. 2
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6 | 1, 5 | wceq 1353 |
1
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Colors of variables: wff set class |
This definition is referenced by: 9re 8982 9pos 8999 9m1e8 9021 8p1e9 9035 5p4e9 9043 6p3e9 9045 7p2e9 9046 9nn 9063 8lt9 9092 8p2e10 9439 9p9e18 9453 9t9e81 9488 lgsdir2lem5 14066 |
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