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| Mirrors > Home > MPE Home > Th. List > df-7 | Structured version Visualization version GIF version | ||
| Description: Define the number 7. (Contributed by NM, 27-May-1999.) |
| Ref | Expression |
|---|---|
| df-7 | ⊢ 7 = (6 + 1) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | c7 12300 | . 2 class 7 | |
| 2 | c6 12299 | . . 3 class 6 | |
| 3 | c1 11101 | . . 3 class 1 | |
| 4 | caddc 11103 | . . 3 class + | |
| 5 | 2, 3, 4 | co 7411 | . 2 class (6 + 1) |
| 6 | 1, 5 | wceq 1567 | 1 wff 7 = (6 + 1) |
| Colors of variables: wff setvar class |
| This definition is referenced by: 7nn 12333 7re 12334 7cn 12335 7m1e6 12372 6p1e7 12388 4p3e7 12394 5p2e7 12396 6p2e8 12399 6lt7 12429 7p7e14 12795 8p7e15 12801 9p7e16 12808 9p8e17 12809 7t7e49 12830 8t7e56 12836 9t7e63 12843 2exp7 17147 7prm 17170 17prm 17177 37prm 17181 317prm 17186 log2ublem2 27078 log2ublem3 27079 bclbnd 27410 bposlem8 27421 lgsdir2lem3 27457 problem4 36093 3cubeslem3r 43344 rmydioph 43667 expdiophlem2 43675 fmtno5 48232 257prm 48236 127prm 48274 7odd 48400 stgoldbwt 48464 |
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