Theorem 1oexOLD 8485

Description: Obsolete version of 1oex 8475 as of 19-Sep-2024. (Contributed by BJ, 6-Apr-2019.) (Proof shortened by AV, 1-Jul-2022.) (Proof modification is discouraged.) (New usage is discouraged.)

Assertion

Ref	Expression
1oexOLD	⊢ 1o ∈ V

Proof of Theorem 1oexOLD

Step	Hyp	Ref	Expression
1		1on 8477	. 2 ⊢ 1o ∈ On
2	1	elexi 3493	1 ⊢ 1o ∈ V

Syntax hints:   ∈ wcel 2106  Vcvv 3474  Oncon0 6364  1_oc1o 8458

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1913  ax-6 1971  ax-7 2011  ax-8 2108  ax-9 2116  ax-ext 2703  ax-sep 5299  ax-nul 5306  ax-pr 5427

This theorem depends on definitions:  df-bi 206  df-an 397  df-or 846  df-3or 1088  df-3an 1089  df-tru 1544  df-fal 1554  df-ex 1782  df-sb 2068  df-clab 2710  df-cleq 2724  df-clel 2810  df-ne 2941  df-ral 3062  df-rex 3071  df-rab 3433  df-v 3476  df-dif 3951  df-un 3953  df-in 3955  df-ss 3965  df-pss 3967  df-nul 4323  df-if 4529  df-pw 4604  df-sn 4629  df-pr 4631  df-op 4635  df-uni 4909  df-br 5149  df-opab 5211  df-tr 5266  df-eprel 5580  df-po 5588  df-so 5589  df-fr 5631  df-we 5633  df-ord 6367  df-on 6368  df-suc 6370  df-1o 8465

This theorem is referenced by: (None)