HomeHome Metamath Proof Explorer < Previous   Next >
Related theorems
Unicode version

Theorem limon 3094
Description: The class of ordinal numbers is a limit ordinal.
Assertion
Ref Expression
limon |- Lim On

Proof of Theorem limon
StepHypRef Expression
1 ordon 2987 . . 3 |- Ord On
2 onne0 3033 . . 3 |- On =/= (/)
3 unon 3088 . . . 4 |- U.On = On
43eqcomi 1479 . . 3 |- On = U.On
51, 2, 43pm3.2i 818 . 2 |- (Ord On /\ On =/= (/) /\ On = U.On)
6 df-lim 2953 . 2 |- (Lim On <-> (Ord On /\ On =/= (/) /\ On = U.On))
75, 6mpbir 190 1 |- Lim On
Colors of variables: wff set class
Syntax hints:   /\ w3a 775   = wceq 956   =/= wne 1585  (/)c0 2280  U.cuni 2503  Ord word 2947  Oncon0 2948  Lim wlim 2949
This theorem is referenced by:  limom 3146  limensuc 4507
This theorem was proved from axioms:  ax-1 4  ax-2 5  ax-3 6  ax-mp 7  ax-7 962  ax-gen 963  ax-8 964  ax-10 966  ax-11 967  ax-12 968  ax-13 969  ax-14 970  ax-17 971  ax-4 973  ax-5o 975  ax-6o 978  ax-9o 1123  ax-10o 1140  ax-16 1210  ax-11o 1218  ax-ext 1459  ax-sep 2703  ax-nul 2710  ax-pow 2742  ax-pr 2779  ax-un 2866
This theorem depends on definitions:  df-bi 147  df-or 224  df-an 225  df-3or 776  df-3an 777  df-ex 981  df-sb 1172  df-eu 1382  df-mo 1383  df-clab 1464  df-cleq 1469  df-clel 1472  df-ne 1587  df-ral 1649  df-rex 1650  df-v 1812  df-dif 2049  df-un 2050  df-in 2051  df-ss 2053  df-nul 2281  df-pw 2402  df-sn 2412  df-pr 2413  df-tp 2415  df-op 2416  df-uni 2504  df-br 2620  df-opab 2667  df-tr 2681  df-eprel 2832  df-po 2840  df-so 2850  df-fr 2917  df-we 2934  df-ord 2951  df-on 2952  df-lim 2953  df-suc 2954
Copyright terms: Public domain