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Mirrors > Home > MPE Home > Th. List > bdayfun | Structured version Visualization version GIF version |
Description: The birthday function is a function. (Contributed by Scott Fenton, 14-Jun-2011.) |
Ref | Expression |
---|---|
bdayfun | ⊢ Fun bday |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | bdayfo 27522 | . 2 ⊢ bday : No –onto→On | |
2 | fofun 6806 | . 2 ⊢ ( bday : No –onto→On → Fun bday ) | |
3 | 1, 2 | ax-mp 5 | 1 ⊢ Fun bday |
Colors of variables: wff setvar class |
Syntax hints: Oncon0 6364 Fun wfun 6537 –onto→wfo 6541 No csur 27485 bday cbday 27487 |
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 1912 ax-6 1970 ax-7 2010 ax-8 2107 ax-9 2115 ax-10 2136 ax-11 2153 ax-12 2170 ax-ext 2702 ax-rep 5285 ax-sep 5299 ax-nul 5306 ax-pr 5427 ax-un 7729 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 845 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1781 df-nf 1785 df-sb 2067 df-mo 2533 df-eu 2562 df-clab 2709 df-cleq 2723 df-clel 2809 df-nfc 2884 df-ne 2940 df-ral 3061 df-rex 3070 df-reu 3376 df-rab 3432 df-v 3475 df-sbc 3778 df-csb 3894 df-dif 3951 df-un 3953 df-in 3955 df-ss 3965 df-nul 4323 df-if 4529 df-sn 4629 df-pr 4631 df-op 4635 df-uni 4909 df-iun 4999 df-br 5149 df-opab 5211 df-mpt 5232 df-id 5574 df-xp 5682 df-rel 5683 df-cnv 5684 df-co 5685 df-dm 5686 df-rn 5687 df-res 5688 df-ima 5689 df-suc 6370 df-iota 6495 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-1o 8472 df-no 27488 df-bday 27490 |
This theorem is referenced by: nocvxminlem 27622 nocvxmin 27623 etasslt2 27659 scutbdaybnd2lim 27662 madebdayim 27726 lrrecfr 27772 negsbdaylem 27880 |
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