Theorem omelon2 7871

Description: Omega is an ordinal number. (Contributed by Mario Carneiro, 30-Jan-2013.)

Assertion

Ref	Expression
omelon2	⊢ (ω ∈ V → ω ∈ On)

Proof of Theorem omelon2

Step	Hyp	Ref	Expression
1		omon 7870	. . . 4 ⊢ (ω ∈ On ∨ ω = On)
2	1	ori 874	. . 3 ⊢ (¬ ω ∈ On → ω = On)
3		onprc 7773	. . . 4 ⊢ ¬ On ∈ V
4		eleq1 2857	. . . 4 ⊢ (ω = On → (ω ∈ V ↔ On ∈ V))
5	3, 4	mtbiri 330	. . 3 ⊢ (ω = On → ¬ ω ∈ V)
6	2, 5	syl 18	. 2 ⊢ (¬ ω ∈ On → ¬ ω ∈ V)
7	6	con4i 115	1 ⊢ (ω ∈ V → ω ∈ On)

Syntax hints:  ¬ wn 3   → wi 4   = wceq 1567   ∈ wcel 2149  Vcvv 3463  Oncon0 6357  ωcom 7858

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-ext 2741  ax-sep 5258  ax-pr 5402

This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3or 1102  df-3an 1103  df-tru 1570  df-fal 1580  df-ex 1807  df-sb 2098  df-clab 2748  df-cleq 2761  df-clel 2844  df-ne 2965  df-ral 3086  df-rex 3096  df-rab 3424  df-v 3465  df-dif 3916  df-un 3918  df-in 3920  df-ss 3930  df-pss 3933  df-nul 4295  df-if 4490  df-pw 4566  df-sn 4592  df-pr 4594  df-op 4598  df-uni 4874  df-br 5111  df-opab 5175  df-tr 5220  df-eprel 5559  df-po 5567  df-so 5568  df-fr 5612  df-we 5614  df-ord 6360  df-on 6361  df-lim 6362  df-om 7859

This theorem is referenced by:  oaabs  8630  omelon  9611  fictb  10223  axdc3lem  10430  n0ssoldg  28508