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Theorem bdayrn 27910
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 27807 . 2 bday : No onto→On
2 forn 6796 . 2 ( bday : No onto→On → ran bday = On)
31, 2ax-mp 5 1 ran bday = On
Colors of variables: wff setvar class
Syntax hints:   = wceq 1567  ran crn 5663  Oncon0 6361  ontowfo 6535   No csur 27770   bday cbday 27772
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1822  ax-4 1836  ax-5 1937  ax-6 1994  ax-7 2035  ax-8 2151  ax-9 2159  ax-10 2182  ax-11 2198  ax-12 2219  ax-ext 2741  ax-sep 5259  ax-pow 5337  ax-pr 5405  ax-un 7733
This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3an 1103  df-tru 1570  df-fal 1580  df-ex 1807  df-nf 1811  df-sb 2098  df-mo 2573  df-eu 2603  df-clab 2748  df-cleq 2761  df-clel 2844  df-nfc 2918  df-ne 2965  df-ral 3086  df-rex 3096  df-rab 3423  df-v 3463  df-dif 3914  df-un 3916  df-in 3918  df-ss 3928  df-nul 4293  df-if 4491  df-pw 4567  df-sn 4593  df-pr 4595  df-op 4599  df-uni 4875  df-br 5112  df-opab 5176  df-mpt 5195  df-id 5557  df-xp 5668  df-rel 5669  df-cnv 5670  df-co 5671  df-dm 5672  df-rn 5673  df-suc 6367  df-fun 6539  df-fn 6540  df-f 6541  df-fo 6543  df-1o 8453  df-no 27773  df-bday 27775
This theorem is referenced by:  nobdaymin  27912  nocvxminlem  27913  etaslts2  27953  cutbdaybnd2lim  27956  bday0  27970  lrrecfr  28102  oniso  28430  bdayons  28435
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