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Theorem 19.36aiv 1894
Description: Inference from Theorem 19.36 of [Margaris] p. 90. (Contributed by NM, 5-Aug-1993.)
Hypothesis
Ref Expression
19.36aiv.1  |-  E. x
( ph  ->  ps )
Assertion
Ref Expression
19.36aiv  |-  ( A. x ph  ->  ps )
Distinct variable group:    ps, x
Allowed substitution hint:    ph( x)

Proof of Theorem 19.36aiv
StepHypRef Expression
1 nfv 1521 . 2  |-  F/ x ps
2 19.36aiv.1 . 2  |-  E. x
( ph  ->  ps )
31, 219.36i 1665 1  |-  ( A. x ph  ->  ps )
Colors of variables: wff set class
Syntax hints:    -> wi 4   A.wal 1346   E.wex 1485
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-5 1440  ax-gen 1442  ax-ie1 1486  ax-ie2 1487  ax-4 1503  ax-17 1519  ax-ial 1527
This theorem depends on definitions:  df-bi 116  df-nf 1454
This theorem is referenced by:  vtocl2  2785  vtocl3  2786
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