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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 8942 | . 2 class 3 | |
2 | c2 8941 | . . 3 class 2 | |
3 | c1 7787 | . . 3 class 1 | |
4 | caddc 7789 | . . 3 class + | |
5 | 2, 3, 4 | co 5865 | . 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 8964 3pos 8984 3m1e2 9010 2p2e4 9017 2p1e3 9023 3p3e6 9032 4p3e7 9034 5p3e8 9037 6p3e9 9040 3t3e9 9047 3nn 9052 2lt3 9060 7p3e10 9429 7p6e13 9432 8p3e11 9435 8p5e13 9437 9p3e12 9442 9p4e13 9443 4t3e12 9452 5t3e15 9455 6t3e18 9459 7t3e21 9464 8t3e24 9470 9t3e27 9477 nn01to3 9588 fztpval 10051 fz0to3un2pr 10091 fz0to4untppr 10092 fzo0to42pr 10188 cu2 10586 i3 10589 binom3 10605 fac3 10678 ege2le3 11645 ef4p 11668 cos1bnd 11733 3prm 12093 oddprmge3 12100 dveflem 13738 sincosq3sgn 13800 sincosq4sgn 13801 tangtx 13810 sincos6thpi 13814 binom4 13948 lgsdir2lem3 13982 |
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