![]() |
Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
|
Mirrors > Home > ILE Home > Th. List > df-3 | GIF version |
Description: Define the number 3. (Contributed by NM, 27-May-1999.) |
Ref | Expression |
---|---|
df-3 | ⊢ 3 = (2 + 1) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | c3 8971 | . 2 class 3 | |
2 | c2 8970 | . . 3 class 2 | |
3 | c1 7812 | . . 3 class 1 | |
4 | caddc 7814 | . . 3 class + | |
5 | 2, 3, 4 | co 5875 | . 2 class (2 + 1) |
6 | 1, 5 | wceq 1353 | 1 wff 3 = (2 + 1) |
Colors of variables: wff set class |
This definition is referenced by: 3re 8993 3pos 9013 3m1e2 9039 2p2e4 9046 2p1e3 9052 3p3e6 9061 4p3e7 9063 5p3e8 9066 6p3e9 9069 3t3e9 9076 3nn 9081 2lt3 9089 7p3e10 9458 7p6e13 9461 8p3e11 9464 8p5e13 9466 9p3e12 9471 9p4e13 9472 4t3e12 9481 5t3e15 9484 6t3e18 9488 7t3e21 9493 8t3e24 9499 9t3e27 9506 nn01to3 9617 fztpval 10083 fz0to3un2pr 10123 fz0to4untppr 10124 fzo0to42pr 10220 cu2 10619 i3 10622 binom3 10638 fac3 10712 ege2le3 11679 ef4p 11702 cos1bnd 11767 3prm 12128 oddprmge3 12135 dveflem 14190 sincosq3sgn 14252 sincosq4sgn 14253 tangtx 14262 sincos6thpi 14266 binom4 14400 lgsdir2lem3 14434 |
Copyright terms: Public domain | W3C validator |