Theorem 1oexOLD 8484

Description: Obsolete version of 1oex 8474 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 8476	. 2 ⊢ 1o ∈ On
2	1	elexi 3488	1 ⊢ 1o ∈ V

Syntax hints:   ∈ wcel 2098  Vcvv 3468  Oncon0 6357  1_oc1o 8457

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1789  ax-4 1803  ax-5 1905  ax-6 1963  ax-7 2003  ax-8 2100  ax-9 2108  ax-ext 2697  ax-sep 5292  ax-nul 5299  ax-pr 5420

This theorem depends on definitions:  df-bi 206  df-an 396  df-or 845  df-3or 1085  df-3an 1086  df-tru 1536  df-fal 1546  df-ex 1774  df-sb 2060  df-clab 2704  df-cleq 2718  df-clel 2804  df-ne 2935  df-ral 3056  df-rex 3065  df-rab 3427  df-v 3470  df-dif 3946  df-un 3948  df-in 3950  df-ss 3960  df-pss 3962  df-nul 4318  df-if 4524  df-pw 4599  df-sn 4624  df-pr 4626  df-op 4630  df-uni 4903  df-br 5142  df-opab 5204  df-tr 5259  df-eprel 5573  df-po 5581  df-so 5582  df-fr 5624  df-we 5626  df-ord 6360  df-on 6361  df-suc 6363  df-1o 8464

This theorem is referenced by: (None)