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Theorem 2r19.29 3079
Description: Theorem r19.29 3072 with two quantifiers. (Contributed by Rodolfo Medina, 25-Sep-2010.)
Assertion
Ref Expression
2r19.29  |-  ( ( A. x  e.  A  A. y  e.  B  ph 
/\  E. x  e.  A  E. y  e.  B  ps )  ->  E. x  e.  A  E. y  e.  B  ( ph  /\ 
ps ) )

Proof of Theorem 2r19.29
StepHypRef Expression
1 r19.29 3072 . 2  |-  ( ( A. x  e.  A  A. y  e.  B  ph 
/\  E. x  e.  A  E. y  e.  B  ps )  ->  E. x  e.  A  ( A. y  e.  B  ph  /\  E. y  e.  B  ps ) )
2 r19.29 3072 . . 3  |-  ( ( A. y  e.  B  ph 
/\  E. y  e.  B  ps )  ->  E. y  e.  B  ( ph  /\ 
ps ) )
32reximi 3011 . 2  |-  ( E. x  e.  A  ( A. y  e.  B  ph 
/\  E. y  e.  B  ps )  ->  E. x  e.  A  E. y  e.  B  ( ph  /\ 
ps ) )
41, 3syl 17 1  |-  ( ( A. x  e.  A  A. y  e.  B  ph 
/\  E. x  e.  A  E. y  e.  B  ps )  ->  E. x  e.  A  E. y  e.  B  ( ph  /\ 
ps ) )
Colors of variables: wff setvar class
Syntax hints:    -> wi 4    /\ wa 384   A.wral 2912   E.wrex 2913
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737
This theorem depends on definitions:  df-bi 197  df-an 386  df-ex 1705  df-ral 2917  df-rex 2918
This theorem is referenced by:  prter2  34166
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