Theorem omelon2 7914

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 7913	. . . 4 ⊢ (ω ∈ On ∨ ω = On)
2	1	ori 875	. . 3 ⊢ (¬ ω ∈ On → ω = On)
3		onprc 7816	. . . 4 ⊢ ¬ On ∈ V
4		eleq1 2852	. . . 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)

This proof depends on syntax axioms:  ¬ wn 3   → wi 4   = wceq 1570   ∈ wcel 2147  Vcvv 3454  Oncon0 6380  ωcom 7901

This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1945  ax-6 2002  ax-7 2043  ax-8 2149  ax-9 2157  ax-ext 2735  ax-sep 5252  ax-pr 5395

This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3or 1104  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-sb 2102  df-clab 2742  df-cleq 2755  df-clel 2839  df-ne 2960  df-ral 3081  df-rex 3091  df-rab 3417  df-v 3456  df-ss 3901  df-pss 4017  df-dif 4050  df-in 4094  df-un 4154  df-nul 4282  df-if 4486  df-pw 4562  df-sn 4589  df-pr 4591  df-op 4839  df-uni 4871  df-br 5107  df-opab 5171  df-tr 5216  df-eprel 5555  df-po 5563  df-so 5564  df-fr 5608  df-we 5610  df-ord 6383  df-on 6384  df-lim 6385  df-om 7902

This theorem is used by:  oaabs  8685  omelon  9674  fictb  10349  axdc3lem  10555  n0ssoldg  28769