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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 27643 | . 2 ⊢ bday : No –onto→On | |
| 2 | fofn 6746 | . 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 6315 Fn wfn 6485 –onto→wfo 6488 No csur 27605 bday cbday 27607 |
| 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 2182 ax-ext 2706 ax-sep 5239 ax-nul 5249 ax-pow 5308 ax-pr 5375 ax-un 7678 |
| 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 2537 df-eu 2567 df-clab 2713 df-cleq 2726 df-clel 2809 df-nfc 2883 df-ne 2931 df-ral 3050 df-rex 3059 df-rab 3398 df-v 3440 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4284 df-if 4478 df-pw 4554 df-sn 4579 df-pr 4581 df-op 4585 df-uni 4862 df-br 5097 df-opab 5159 df-mpt 5178 df-id 5517 df-xp 5628 df-rel 5629 df-cnv 5630 df-co 5631 df-dm 5632 df-rn 5633 df-suc 6321 df-fun 6492 df-fn 6493 df-f 6494 df-fo 6496 df-1o 8395 df-no 27608 df-bday 27610 |
| This theorem is referenced by: nobdaymin 27743 eqscut2 27774 scutun12 27778 scutbdaybnd 27783 scutbdaybnd2 27784 scutbdaylt 27786 bday1s 27802 cuteq0 27803 madebdaylemlrcut 27871 cofcut1 27891 cofcutr 27895 lrrecfr 27913 onsiso 28236 bdayon 28240 n0sbday 28312 bdayn0p1 28327 bdaypw2n0s 28420 zs12bday 28433 |
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