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| Mirrors > Home > MPE Home > Th. List > df-5 | Structured version Visualization version GIF version | ||
| Description: Define the number 5. (Contributed by NM, 27-May-1999.) |
| Ref | Expression |
|---|---|
| df-5 | ⊢ 5 = (4 + 1) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | c5 12245 | . 2 class 5 | |
| 2 | c4 12244 | . . 3 class 4 | |
| 3 | c1 11075 | . . 3 class 1 | |
| 4 | caddc 11077 | . . 3 class + | |
| 5 | 2, 3, 4 | co 7389 | . 2 class (4 + 1) |
| 6 | 1, 5 | wceq 1540 | 1 wff 5 = (4 + 1) |
| Colors of variables: wff setvar class |
| This definition is referenced by: 5nn 12273 5re 12274 5cn 12275 5pos 12296 5m1e4 12317 4p1e5 12333 3p2e5 12338 4p2e6 12340 4lt5 12364 5p5e10 12726 6p5e11 12728 7p5e12 12732 8p5e13 12738 8p7e15 12740 9p5e14 12745 9p6e15 12746 5t5e25 12758 6t5e30 12762 7t5e35 12767 8t5e40 12773 9t5e45 12780 fldiv4p1lem1div2 13803 ef01bndlem 16158 prm23lt5 16791 5prm 17085 lt6abl 19831 log2ublem3 26864 ppiublem2 27120 bclbnd 27197 bposlem6 27206 bposlem9 27209 lgsdir2lem3 27244 2lgslem3c 27315 2lgsoddprmlem3c 27329 ex-exp 30385 ex-fac 30386 ex-bc 30387 3lexlogpow5ineq5 42043 aks4d1p1p7 42057 rmydioph 42996 expdiophlem2 43004 stoweidlem13 46004 fmtno5 47548 fmtnofac1 47561 31prm 47588 5odd 47701 sbgoldbo 47778 gpgprismgr4cycllem7 48081 gpgprismgr4cycllem9 48083 ackval50 48677 |
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