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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 27659 | . 2 ⊢ bday : No –onto→On | |
| 2 | fofn 6741 | . 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 6310 Fn wfn 6480 –onto→wfo 6483 No csur 27621 bday cbday 27623 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2711 ax-sep 5218 ax-pow 5294 ax-pr 5362 ax-un 7678 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2718 df-cleq 2731 df-clel 2814 df-nfc 2888 df-ne 2935 df-ral 3054 df-rex 3064 df-rab 3392 df-v 3433 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-nul 4262 df-if 4455 df-pw 4531 df-sn 4556 df-pr 4558 df-op 4562 df-uni 4839 df-br 5073 df-opab 5135 df-mpt 5154 df-id 5513 df-xp 5624 df-rel 5625 df-cnv 5626 df-co 5627 df-dm 5628 df-rn 5629 df-suc 6316 df-fun 6487 df-fn 6488 df-f 6489 df-fo 6491 df-1o 8395 df-no 27624 df-bday 27626 |
| This theorem is referenced by: nobdaymin 27763 eqcuts2 27796 cutsun12 27800 cutbdaybnd 27805 cutbdaybnd2 27806 cutbdaylt 27808 bday1 27824 cuteq0 27825 madebdaylemlrcut 27909 sltsbday 27927 cofcut1 27930 cofcutr 27934 lrrecfr 27953 oniso 28281 bdayons 28286 n0bday 28362 bdayn0p1 28379 bdaypw2n0bndlem 28473 |
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