ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  limon GIF version

Theorem limon 4660
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 4633 . 2 Ord On
2 0elon 4537 . 2 ∅ ∈ On
3 unon 4658 . . 3 On = On
43eqcomi 2242 . 2 On = On
5 dflim2 4515 . 2 (Lim On ↔ (Ord On ∧ ∅ ∈ On ∧ On = On))
61, 2, 4, 5mpbir3an 1210 1 Lim On
Colors of variables:    wff set class
This proof depends on syntax axioms:   = wceq 1402  wcel 2209  c0 3520   cuni 3935  Ord word 4507  Oncon0 4508  Lim wlim 4509
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 623  ax-in2 624  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-14 2212  ax-ext 2220  ax-sep 4249  ax-nul 4259  ax-pow 4311  ax-pr 4346  ax-un 4578
This proof depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  df-nf 1514  df-sb 1816  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ral 2533  df-rex 2534  df-v 2823  df-dif 3222  df-un 3224  df-in 3226  df-ss 3233  df-nul 3521  df-pw 3690  df-sn 3715  df-pr 3716  df-uni 3936  df-tr 4230  df-iord 4511  df-on 4513  df-ilim 4514  df-suc 4516
This theorem is used by: (None)
  Copyright terms: Public domain W3C validator