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Theorem ralrimdvva 2638
Description: Inference from Theorem 19.21 of [Margaris] p. 90. (Restricted quantifier version with double quantification.) (Contributed by NM, 2-Feb-2008.)
Hypothesis
Ref Expression
ralrimdvva.1  |-  ( (
ph  /\  ( x  e.  A  /\  y  e.  B ) )  -> 
( ps  ->  ch ) )
Assertion
Ref Expression
ralrimdvva  |-  ( ph  ->  ( ps  ->  A. x  e.  A  A. y  e.  B  ch )
)
Distinct variable groups:    x, y, ph    ps, x, y    y, A
Allowed substitution hints:    ch( x, y)    A( x)    B( x, y)

Proof of Theorem ralrimdvva
StepHypRef Expression
1 ralrimdvva.1 . . . 4  |-  ( (
ph  /\  ( x  e.  A  /\  y  e.  B ) )  -> 
( ps  ->  ch ) )
21ex 423 . . 3  |-  ( ph  ->  ( ( x  e.  A  /\  y  e.  B )  ->  ( ps  ->  ch ) ) )
32com23 72 . 2  |-  ( ph  ->  ( ps  ->  (
( x  e.  A  /\  y  e.  B
)  ->  ch )
) )
43ralrimdvv 2637 1  |-  ( ph  ->  ( ps  ->  A. x  e.  A  A. y  e.  B  ch )
)
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 358    e. wcel 1684   A.wral 2543
This theorem is referenced by:  isosolem  5844  kgencn2  17252  fbunfip  17564  reconn  18333  c1lip1  19344  cdj3i  23021  ispridl2  26663  ispridlc  26695
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1533  ax-5 1544  ax-17 1603  ax-9 1635  ax-8 1643  ax-11 1715
This theorem depends on definitions:  df-bi 177  df-an 360  df-nf 1532  df-ral 2548
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