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Theorem bj-unex 15993
Description: unex 4496 from bounded separation. (Contributed by BJ, 13-Nov-2019.) (Proof modification is discouraged.)
Hypotheses
Ref Expression
bj-unex.1 𝐴 ∈ V
bj-unex.2 𝐵 ∈ V
Assertion
Ref Expression
bj-unex (𝐴𝐵) ∈ V

Proof of Theorem bj-unex
StepHypRef Expression
1 bj-unex.1 . . 3 𝐴 ∈ V
2 bj-unex.2 . . 3 𝐵 ∈ V
31, 2unipr 3870 . 2 {𝐴, 𝐵} = (𝐴𝐵)
4 bj-prexg 15985 . . . 4 ((𝐴 ∈ V ∧ 𝐵 ∈ V) → {𝐴, 𝐵} ∈ V)
51, 2, 4mp2an 426 . . 3 {𝐴, 𝐵} ∈ V
65bj-uniex 15991 . 2 {𝐴, 𝐵} ∈ V
73, 6eqeltrri 2280 1 (𝐴𝐵) ∈ V
Colors of variables: wff set class
Syntax hints:  wcel 2177  Vcvv 2773  cun 3168  {cpr 3639   cuni 3856
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 711  ax-5 1471  ax-7 1472  ax-gen 1473  ax-ie1 1517  ax-ie2 1518  ax-8 1528  ax-10 1529  ax-11 1530  ax-i12 1531  ax-bndl 1533  ax-4 1534  ax-17 1550  ax-i9 1554  ax-ial 1558  ax-i5r 1559  ax-13 2179  ax-14 2180  ax-ext 2188  ax-pr 4261  ax-un 4488  ax-bd0 15887  ax-bdor 15890  ax-bdex 15893  ax-bdeq 15894  ax-bdel 15895  ax-bdsb 15896  ax-bdsep 15958
This theorem depends on definitions:  df-bi 117  df-tru 1376  df-nf 1485  df-sb 1787  df-clab 2193  df-cleq 2199  df-clel 2202  df-nfc 2338  df-rex 2491  df-v 2775  df-un 3174  df-sn 3644  df-pr 3645  df-uni 3857  df-bdc 15915
This theorem is referenced by:  bdunexb  15994  bj-unexg  15995
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