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| Description: Define the number 10. See remarks under df-2 5925. |
| Ref | Expression |
|---|---|
| df-10 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | c10 5924 |
. 2
| |
| 2 | c9 5923 |
. . 3
| |
| 3 | c1 5215 |
. . 3
| |
| 4 | caddc 5217 |
. . 3
| |
| 5 | 2, 3, 4 | co 3954 |
. 2
|
| 6 | 1, 5 | wceq 954 |
1
|
| Colors of variables: wff set class |
| This definition is referenced by: 10re 5943 10pos 5953 5p5e10 5970 6p4e10 5973 7p3e10 5975 8p2e10 5976 0.999... 7189 |