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Mirrors > Home > MPE Home > Th. List > df-4 | Structured version Visualization version GIF version |
Description: Define the number 4. (Contributed by NM, 27-May-1999.) |
Ref | Expression |
---|---|
df-4 | ⊢ 4 = (3 + 1) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | c4 12266 | . 2 class 4 | |
2 | c3 12265 | . . 3 class 3 | |
3 | c1 11108 | . . 3 class 1 | |
4 | caddc 11110 | . . 3 class + | |
5 | 2, 3, 4 | co 7406 | . 2 class (3 + 1) |
6 | 1, 5 | wceq 1542 | 1 wff 4 = (3 + 1) |
Colors of variables: wff setvar class |
This definition is referenced by: 4nn 12292 4re 12293 4cn 12294 4pos 12316 4m1e3 12338 2p2e4 12344 3p1e4 12354 3p2e5 12360 4p4e8 12364 5p4e9 12367 3lt4 12383 halfpm6th 12430 6p4e10 12746 7p4e11 12750 7p7e14 12753 8p4e12 12756 8p6e14 12758 9p4e13 12763 9p5e14 12764 4t4e16 12773 5t4e20 12776 6t4e24 12780 7t4e28 12785 8t4e32 12791 9t4e36 12798 fz0to4untppr 13601 4bc2eq6 14286 bpoly3 15999 bpoly4 16000 fsumcube 16001 ef4p 16053 ef01bndlem 16124 ge2nprmge4 16635 lt6abl 19758 cphipval 24752 sincosq4sgn 26003 binom4 26345 quart1lem 26350 log2cnv 26439 ppiublem2 26696 ppiub 26697 chtub 26705 bclbnd 26773 bposlem8 26784 lgsdir2lem3 26820 3wlkdlem1 29402 ipval2 29948 problem3 34641 aks4d1p1p7 40928 rmydioph 41739 rmxdioph 41741 expdiophlem2 41747 lt4addmuld 44003 stoweidlem13 44716 4even 46364 sbgoldbo 46442 ackval40 47333 ackval41a 47334 ackval42 47336 |
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