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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 9034 | . 2 class 3 | |
2 | c2 9033 | . . 3 class 2 | |
3 | c1 7873 | . . 3 class 1 | |
4 | caddc 7875 | . . 3 class + | |
5 | 2, 3, 4 | co 5918 | . 2 class (2 + 1) |
6 | 1, 5 | wceq 1364 | 1 wff 3 = (2 + 1) |
Colors of variables: wff set class |
This definition is referenced by: 3re 9056 3pos 9076 3m1e2 9102 2p2e4 9109 2p1e3 9115 3p3e6 9124 4p3e7 9126 5p3e8 9129 6p3e9 9132 3t3e9 9139 3nn 9144 2lt3 9152 7p3e10 9522 7p6e13 9525 8p3e11 9528 8p5e13 9530 9p3e12 9535 9p4e13 9536 4t3e12 9545 5t3e15 9548 6t3e18 9552 7t3e21 9557 8t3e24 9563 9t3e27 9570 nn01to3 9682 fztpval 10149 fz0to3un2pr 10189 fz0to4untppr 10190 fzo0to42pr 10287 cu2 10709 i3 10712 binom3 10728 fac3 10803 ege2le3 11814 ef4p 11837 cos1bnd 11902 3prm 12266 oddprmge3 12273 dveflem 14872 sincosq3sgn 14963 sincosq4sgn 14964 tangtx 14973 sincos6thpi 14977 binom4 15111 lgsdir2lem3 15146 |
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