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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 27657 | . 2 ⊢ bday : No –onto→On | |
| 2 | fofn 6756 | . 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 6325 Fn wfn 6495 –onto→wfo 6498 No csur 27619 bday cbday 27621 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5243 ax-pow 5312 ax-pr 5379 ax-un 7690 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-ral 3053 df-rex 3063 df-rab 3402 df-v 3444 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-nul 4288 df-if 4482 df-pw 4558 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-br 5101 df-opab 5163 df-mpt 5182 df-id 5527 df-xp 5638 df-rel 5639 df-cnv 5640 df-co 5641 df-dm 5642 df-rn 5643 df-suc 6331 df-fun 6502 df-fn 6503 df-f 6504 df-fo 6506 df-1o 8407 df-no 27622 df-bday 27624 |
| This theorem is referenced by: nobdaymin 27761 eqcuts2 27794 cutsun12 27798 cutbdaybnd 27803 cutbdaybnd2 27804 cutbdaylt 27806 bday1 27822 cuteq0 27823 madebdaylemlrcut 27907 sltsbday 27925 cofcut1 27928 cofcutr 27932 lrrecfr 27951 oniso 28279 bdayons 28284 n0bday 28360 bdayn0p1 28377 bdaypw2n0bndlem 28471 |
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