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Theorem bj-19.8w 31223
Description: The general statement that 19.8w 1800 proves (deduction form of 19.2 1799, so could be labeled 19.2d instead). (Contributed by BJ, 12-May-2019.)
Hypothesis
Ref Expression
bj-19.8w.1  |-  ( ph  ->  A. x ps )
Assertion
Ref Expression
bj-19.8w  |-  ( ph  ->  E. x ps )

Proof of Theorem bj-19.8w
StepHypRef Expression
1 bj-19.8w.1 . 2  |-  ( ph  ->  A. x ps )
2 19.2 1799 . 2  |-  ( A. x ps  ->  E. x ps )
31, 2syl 17 1  |-  ( ph  ->  E. x ps )
Colors of variables: wff setvar class
Syntax hints:    -> wi 4   A.wal 1436   E.wex 1660
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1666  ax-4 1679  ax-6 1795
This theorem depends on definitions:  df-bi 189  df-ex 1661
This theorem is referenced by: (None)
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