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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 11698 | . 2 class 7 | |
2 | c6 11697 | . . 3 class 6 | |
3 | c1 10538 | . . 3 class 1 | |
4 | caddc 10540 | . . 3 class + | |
5 | 2, 3, 4 | co 7156 | . 2 class (6 + 1) |
6 | 1, 5 | wceq 1537 | 1 wff 7 = (6 + 1) |
Colors of variables: wff setvar class |
This definition is referenced by: 7nn 11730 7re 11731 7cn 11732 7pos 11749 7m1e6 11770 6p1e7 11786 4p3e7 11792 5p2e7 11794 6p2e8 11797 6lt7 11824 7p7e14 12178 8p7e15 12184 9p7e16 12191 9p8e17 12192 7t7e49 12213 8t7e56 12219 9t7e63 12226 7prm 16444 17prm 16450 37prm 16454 317prm 16459 log2ublem2 25525 log2ublem3 25526 bclbnd 25856 bposlem8 25867 lgsdir2lem3 25903 problem4 32911 3cubeslem3r 39333 rmydioph 39660 expdiophlem2 39668 fmtno5 43768 257prm 43772 2exp7 43811 127prm 43812 7odd 43926 stgoldbwt 43990 |
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