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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 27741 | . 2 ⊢ bday : No –onto→On | |
| 2 | fofn 6780 | . 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 6346 Fn wfn 6516 –onto→wfo 6519 No csur 27704 bday cbday 27706 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1815 ax-4 1829 ax-5 1930 ax-6 1987 ax-7 2028 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-sep 5246 ax-pow 5322 ax-pr 5390 ax-un 7718 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1100 df-tru 1563 df-fal 1573 df-ex 1800 df-nf 1804 df-sb 2091 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-ral 3077 df-rex 3087 df-rab 3415 df-v 3456 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-nul 4286 df-if 4481 df-pw 4557 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-br 5101 df-opab 5163 df-mpt 5182 df-id 5542 df-xp 5653 df-rel 5654 df-cnv 5655 df-co 5656 df-dm 5657 df-rn 5658 df-suc 6352 df-fun 6523 df-fn 6524 df-f 6525 df-fo 6527 df-1o 8437 df-no 27707 df-bday 27709 |
| This theorem is referenced by: bdaydm 27842 nobdaymin 27846 eqcuts2 27879 cutsun12 27883 cutbdaybnd 27888 cutbdaybnd2 27889 cutbdaylt 27891 bday1 27907 cuteq0 27908 madebdaylemlrcut 27992 sltsbday 28010 cofcut1 28013 cofcutr 28017 lrrecfr 28036 oniso 28364 bdayons 28369 n0bday 28445 bdayn0p1 28462 bdaypw2n0bndlem 28556 |
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