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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 12188 | . 2 class 7 | |
| 2 | c6 12187 | . . 3 class 6 | |
| 3 | c1 11010 | . . 3 class 1 | |
| 4 | caddc 11012 | . . 3 class + | |
| 5 | 2, 3, 4 | co 7349 | . 2 class (6 + 1) |
| 6 | 1, 5 | wceq 1540 | 1 wff 7 = (6 + 1) |
| Colors of variables: wff setvar class |
| This definition is referenced by: 7nn 12220 7re 12221 7cn 12222 7pos 12239 7m1e6 12255 6p1e7 12271 4p3e7 12277 5p2e7 12279 6p2e8 12282 6lt7 12309 7p7e14 12670 8p7e15 12676 9p7e16 12683 9p8e17 12684 7t7e49 12705 8t7e56 12711 9t7e63 12718 2exp7 16999 7prm 17022 17prm 17028 37prm 17032 317prm 17037 log2ublem2 26855 log2ublem3 26856 bclbnd 27189 bposlem8 27200 lgsdir2lem3 27236 problem4 35651 3cubeslem3r 42670 rmydioph 42997 expdiophlem2 43005 fmtno5 47551 257prm 47555 127prm 47593 7odd 47706 stgoldbwt 47770 |
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