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Theorem 19.36aiv 1823
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 1462 . 2  |-  F/ x ps
2 19.36aiv.1 . 2  |-  E. x
( ph  ->  ps )
31, 219.36i 1603 1  |-  ( A. x ph  ->  ps )
Colors of variables: wff set class
Syntax hints:    -> wi 4   A.wal 1283   E.wex 1422
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 104  ax-ia2 105  ax-ia3 106  ax-5 1377  ax-gen 1379  ax-ie1 1423  ax-ie2 1424  ax-4 1441  ax-17 1460  ax-ial 1468
This theorem depends on definitions:  df-bi 115  df-nf 1391
This theorem is referenced by:  vtocl2  2655  vtocl3  2656
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