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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 12299 | . 2 class 7 | |
| 2 | c6 12298 | . . 3 class 6 | |
| 3 | c1 11100 | . . 3 class 1 | |
| 4 | caddc 11102 | . . 3 class + | |
| 5 | 2, 3, 4 | co 7410 | . 2 class (6 + 1) |
| 6 | 1, 5 | wceq 1568 | 1 wff 7 = (6 + 1) |
| Colors of variables: wff setvar class |
| This definition is referenced by: 7nn 12332 7re 12333 7cn 12334 7m1e6 12371 6p1e7 12387 4p3e7 12393 5p2e7 12395 6p2e8 12398 6lt7 12428 7p7e14 12794 8p7e15 12800 9p7e16 12807 9p8e17 12808 7t7e49 12829 8t7e56 12835 9t7e63 12842 2exp7 17146 7prm 17169 17prm 17176 37prm 17180 317prm 17185 log2ublem2 27088 log2ublem3 27089 bclbnd 27420 bposlem8 27431 lgsdir2lem3 27467 problem4 36114 3cubeslem3r 43366 rmydioph 43689 expdiophlem2 43697 fmtno5 48254 257prm 48258 127prm 48296 7odd 48422 stgoldbwt 48486 |
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