Theorem onnbtwn 3054

Description: There is no set between an ordinal number and its successor. Proposition 7.25 of [TakeutiZaring] p. 41.

Assertion

Ref	Expression
onnbtwn	|- (A e. On -> -. (A e. B /\ B e. suc A))

Proof of Theorem onnbtwn

Step	Hyp	Ref	Expression
1		eloni 2948	. 2 |- (A e. On -> Ord A)
2		ordnbtwn 3053	. 2 |- (Ord A -> -. (A e. B /\ B e. suc A))
3	1, 2	syl 10	1 |- (A e. On -> -. (A e. B /\ B e. suc A))

Syntax hints:  -. wn 2   -> wi 3   /\ wa 223   e. wcel 955  Ord word 2937  Oncon0 2938  suc csuc 2940

This theorem is referenced by:  ordunisuc2 3105  oalimcl 4178  omlimcl 4193  oneo 4196

This theorem was proved from axioms:  ax-1 4  ax-2 5  ax-3 6  ax-mp 7  ax-7 959  ax-gen 960  ax-8 961  ax-10 963  ax-11 964  ax-12 965  ax-13 966  ax-14 967  ax-17 968  ax-4 970  ax-5o 972  ax-6o 975  ax-9o 1119  ax-10o 1136  ax-16 1206  ax-11o 1213  ax-ext 1452  ax-sep 2693  ax-pow 2732  ax-pr 2769

This theorem depends on definitions:  df-bi 147  df-or 224  df-an 225  df-3an 775  df-ex 978  df-sb 1168  df-eu 1375  df-mo 1376  df-clab 1457  df-cleq 1462  df-clel 1465  df-ne 1579  df-ral 1641  df-rex 1642  df-v 1803  df-dif 2039  df-un 2040  df-in 2041  df-ss 2043  df-nul 2271  df-pw 2392  df-sn 2402  df-pr 2403  df-op 2406  df-uni 2494  df-br 2610  df-opab 2657  df-tr 2671  df-eprel 2821  df-po 2831  df-so 2841  df-fr 2907  df-we 2924  df-ord 2941  df-on 2942  df-suc 2944

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