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Theorem limon 4358
Description: The class of ordinal numbers is a limit ordinal. (Contributed by NM, 24-Mar-1995.)
Assertion
Ref Expression
limon  |-  Lim  On

Proof of Theorem limon
StepHypRef Expression
1 ordon 4331 . 2  |-  Ord  On
2 0elon 4243 . 2  |-  (/)  e.  On
3 unon 4356 . . 3  |-  U. On  =  On
43eqcomi 2099 . 2  |-  On  =  U. On
5 dflim2 4221 . 2  |-  ( Lim 
On 
<->  ( Ord  On  /\  (/) 
e.  On  /\  On  =  U. On ) )
61, 2, 4, 5mpbir3an 1128 1  |-  Lim  On
Colors of variables: wff set class
Syntax hints:    = wceq 1296    e. wcel 1445   (/)c0 3302   U.cuni 3675   Ord word 4213   Oncon0 4214   Lim wlim 4215
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-in1 582  ax-in2 583  ax-io 668  ax-5 1388  ax-7 1389  ax-gen 1390  ax-ie1 1434  ax-ie2 1435  ax-8 1447  ax-10 1448  ax-11 1449  ax-i12 1450  ax-bndl 1451  ax-4 1452  ax-13 1456  ax-14 1457  ax-17 1471  ax-i9 1475  ax-ial 1479  ax-i5r 1480  ax-ext 2077  ax-sep 3978  ax-nul 3986  ax-pow 4030  ax-pr 4060  ax-un 4284
This theorem depends on definitions:  df-bi 116  df-3an 929  df-tru 1299  df-nf 1402  df-sb 1700  df-clab 2082  df-cleq 2088  df-clel 2091  df-nfc 2224  df-ral 2375  df-rex 2376  df-v 2635  df-dif 3015  df-un 3017  df-in 3019  df-ss 3026  df-nul 3303  df-pw 3451  df-sn 3472  df-pr 3473  df-uni 3676  df-tr 3959  df-iord 4217  df-on 4219  df-ilim 4220  df-suc 4222
This theorem is referenced by: (None)
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