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Theorem bdayrn 28137
Description: The birthday function's range is On. (Contributed by Scott Fenton, 14-Jun-2011.)
Assertion
Ref Expression
bdayrn ran bday = On

Proof of Theorem bdayrn
StepHypRef Expression
1 bdayfo 28034 . 2 bday:No–onto→On
2 forn 6799 . 2 (bday:No–onto→On → ran bday = On)
31, 2ax-mp 5 1 ran bday = On
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   = wceq 1569  ran crn 5651  Oncon0 6362  –onto→wfo 6536  Nocsur 27997  bdaycbday 27999
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1827  ax-4 1841  ax-5 1942  ax-6 1999  ax-7 2040  ax-8 2146  ax-9 2154  ax-10 2177  ax-11 2193  ax-12 2212  ax-ext 2732  ax-sep 5248  ax-pow 5326  ax-pr 5390  ax-un 7751
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1572  df-fal 1582  df-ex 1812  df-nf 1816  df-sb 2099  df-mo 2564  df-eu 2594  df-clab 2739  df-cleq 2752  df-clel 2835  df-nfc 2909  df-ne 2956  df-ral 3077  df-rex 3087  df-rab 3413  df-v 3452  df-ss 3896  df-dif 4047  df-in 4091  df-un 4151  df-nul 4279  df-if 4482  df-pw 4558  df-sn 4584  df-pr 4586  df-op 4590  df-uni 4867  df-br 5103  df-opab 5167  df-mpt 5186  df-id 5545  df-xp 5656  df-rel 5657  df-cnv 5658  df-co 5659  df-dm 5660  df-rn 5661  df-suc 6368  df-fun 6540  df-fn 6541  df-f 6542  df-fo 6544  df-1o 8476  df-no 28000  df-bday 28002
This theorem is used by:  nobdaymin  28139  nocvxminlem  28140  etaslts2  28180  cutbdaybnd2lim  28183  bday0  28197  lrrecfr  28329  oniso  28657  bdayons  28662
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