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Mirrors > Home > ILE Home > Th. List > df-6 | GIF version |
Description: Define the number 6. (Contributed by NM, 27-May-1999.) |
Ref | Expression |
---|---|
df-6 | ⊢ 6 = (5 + 1) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | c6 8889 | . 2 class 6 | |
2 | c5 8888 | . . 3 class 5 | |
3 | c1 7734 | . . 3 class 1 | |
4 | caddc 7736 | . . 3 class + | |
5 | 2, 3, 4 | co 5825 | . 2 class (5 + 1) |
6 | 1, 5 | wceq 1335 | 1 wff 6 = (5 + 1) |
Colors of variables: wff set class |
This definition is referenced by: 6re 8915 6pos 8935 6m1e5 8957 5p1e6 8971 3p3e6 8976 4p2e6 8977 5p2e7 8980 6nn 8999 5lt6 9013 6p6e12 9369 7p6e13 9373 8p6e14 9379 8p8e16 9381 9p6e15 9386 9p7e16 9387 6t6e36 9403 7t6e42 9408 8t6e48 9414 9t6e54 9421 |
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