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| Mirrors > Home > ILE Home > Th. List > df-3 | Unicode version | ||
| Description: Define the number 3. (Contributed by NM, 27-May-1999.) | 
| Ref | Expression | 
|---|---|
| df-3 | 
 | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | c3 9042 | 
. 2
 | |
| 2 | c2 9041 | 
. . 3
 | |
| 3 | c1 7880 | 
. . 3
 | |
| 4 | caddc 7882 | 
. . 3
 | |
| 5 | 2, 3, 4 | co 5922 | 
. 2
 | 
| 6 | 1, 5 | wceq 1364 | 
1
 | 
| Colors of variables: wff set class | 
| This definition is referenced by: 3re 9064 3pos 9084 3m1e2 9110 2p2e4 9117 2p1e3 9124 3p3e6 9133 4p3e7 9135 5p3e8 9138 6p3e9 9141 3t3e9 9148 3nn 9153 2lt3 9161 7p3e10 9531 7p6e13 9534 8p3e11 9537 8p5e13 9539 9p3e12 9544 9p4e13 9545 4t3e12 9554 5t3e15 9557 6t3e18 9561 7t3e21 9566 8t3e24 9572 9t3e27 9579 nn01to3 9691 fztpval 10158 fz0to3un2pr 10198 fz0to4untppr 10199 fzo0to42pr 10296 cu2 10730 i3 10733 binom3 10749 fac3 10824 ege2le3 11836 ef4p 11859 cos1bnd 11924 3prm 12296 oddprmge3 12303 dveflem 14962 sincosq3sgn 15064 sincosq4sgn 15065 tangtx 15074 sincos6thpi 15078 binom4 15215 lgsdir2lem3 15271 | 
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