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Theorem rspa 2542
Description: Restricted specialization. (Contributed by Glauco Siliprandi, 11-Dec-2019.)
Assertion
Ref Expression
rspa  |-  ( ( A. x  e.  A  ph 
/\  x  e.  A
)  ->  ph )

Proof of Theorem rspa
StepHypRef Expression
1 rsp 2541 . 2  |-  ( A. x  e.  A  ph  ->  ( x  e.  A  ->  ph ) )
21imp 124 1  |-  ( ( A. x  e.  A  ph 
/\  x  e.  A
)  ->  ph )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 104    e. wcel 2164   A.wral 2472
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-4 1521
This theorem depends on definitions:  df-bi 117  df-ral 2477
This theorem is referenced by:  gausslemma2dlem6  15131
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