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Theorem bj-snexg 14749
Description: snexg 4186 from bounded separation. (Contributed by BJ, 5-Oct-2019.) (Proof modification is discouraged.)
Assertion
Ref Expression
bj-snexg  |-  ( A  e.  V  ->  { A }  e.  _V )

Proof of Theorem bj-snexg
StepHypRef Expression
1 dfsn2 3608 . 2  |-  { A }  =  { A ,  A }
2 bj-prexg 14748 . . 3  |-  ( ( A  e.  V  /\  A  e.  V )  ->  { A ,  A }  e.  _V )
32anidms 397 . 2  |-  ( A  e.  V  ->  { A ,  A }  e.  _V )
41, 3eqeltrid 2264 1  |-  ( A  e.  V  ->  { A }  e.  _V )
Colors of variables: wff set class
Syntax hints:    -> wi 4    e. wcel 2148   _Vcvv 2739   {csn 3594   {cpr 3595
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 709  ax-5 1447  ax-7 1448  ax-gen 1449  ax-ie1 1493  ax-ie2 1494  ax-8 1504  ax-10 1505  ax-11 1506  ax-i12 1507  ax-bndl 1509  ax-4 1510  ax-17 1526  ax-i9 1530  ax-ial 1534  ax-i5r 1535  ax-14 2151  ax-ext 2159  ax-pr 4211  ax-bdor 14653  ax-bdeq 14657  ax-bdsep 14721
This theorem depends on definitions:  df-bi 117  df-tru 1356  df-nf 1461  df-sb 1763  df-clab 2164  df-cleq 2170  df-clel 2173  df-nfc 2308  df-v 2741  df-un 3135  df-sn 3600  df-pr 3601
This theorem is referenced by:  bj-snex  14750  bj-sels  14751  bj-sucexg  14759
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