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| Mirrors > Home > MPE Home > Th. List > bdayfn | Structured version Visualization version GIF version | ||
| Description: The birthday function is a function over No . (Contributed by Scott Fenton, 30-Jun-2011.) |
| Ref | Expression |
|---|---|
| bdayfn | ⊢ bday Fn No |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | bdayfo 27645 | . 2 ⊢ bday : No –onto→On | |
| 2 | fofn 6748 | . 2 ⊢ ( bday : No –onto→On → bday Fn No ) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ bday Fn No |
| Colors of variables: wff setvar class |
| Syntax hints: Oncon0 6317 Fn wfn 6487 –onto→wfo 6490 No csur 27607 bday cbday 27609 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2184 ax-ext 2708 ax-sep 5241 ax-nul 5251 ax-pow 5310 ax-pr 5377 ax-un 7680 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-ral 3052 df-rex 3061 df-rab 3400 df-v 3442 df-dif 3904 df-un 3906 df-in 3908 df-ss 3918 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4581 df-pr 4583 df-op 4587 df-uni 4864 df-br 5099 df-opab 5161 df-mpt 5180 df-id 5519 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-suc 6323 df-fun 6494 df-fn 6495 df-f 6496 df-fo 6498 df-1o 8397 df-no 27610 df-bday 27612 |
| This theorem is referenced by: nobdaymin 27749 eqcuts2 27782 cutsun12 27786 cutbdaybnd 27791 cutbdaybnd2 27792 cutbdaylt 27794 bday1 27810 cuteq0 27811 madebdaylemlrcut 27895 sltsbday 27913 cofcut1 27916 cofcutr 27920 lrrecfr 27939 oniso 28267 bdayons 28272 n0bday 28348 bdayn0p1 28365 bdaypw2n0bndlem 28459 |
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