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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 27655 | . 2 ⊢ bday : No –onto→On | |
2 | fofun 6811 | . 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 6371 Fun wfun 6543 –onto→wfo 6547 No csur 27617 bday cbday 27619 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2166 ax-ext 2696 ax-sep 5300 ax-nul 5307 ax-pow 5365 ax-pr 5429 ax-un 7741 |
This theorem depends on definitions: df-bi 206 df-an 395 df-or 846 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2528 df-eu 2557 df-clab 2703 df-cleq 2717 df-clel 2802 df-nfc 2877 df-ne 2930 df-ral 3051 df-rex 3060 df-rab 3419 df-v 3463 df-dif 3947 df-un 3949 df-in 3951 df-ss 3961 df-nul 4323 df-if 4531 df-pw 4606 df-sn 4631 df-pr 4633 df-op 4637 df-uni 4910 df-br 5150 df-opab 5212 df-mpt 5233 df-id 5576 df-xp 5684 df-rel 5685 df-cnv 5686 df-co 5687 df-dm 5688 df-rn 5689 df-suc 6377 df-fun 6551 df-fn 6552 df-f 6553 df-fo 6555 df-1o 8487 df-no 27620 df-bday 27622 |
This theorem is referenced by: nocvxminlem 27755 nocvxmin 27756 etasslt2 27792 scutbdaybnd2lim 27795 madebdayim 27859 lrrecfr 27905 negsbdaylem 28013 |
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