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Theorem rr19.28v 2904
Description: Restricted quantifier version of Theorem 19.28 of [Margaris] p. 90. (Contributed by NM, 29-Oct-2012.)
Assertion
Ref Expression
rr19.28v  |-  ( A. x  e.  A  A. y  e.  A  ( ph  /\  ps )  <->  A. x  e.  A  ( ph  /\ 
A. y  e.  A  ps ) )
Distinct variable groups:    y, A    x, y    ph, y
Allowed substitution hints:    ph( x)    ps( x, y)    A( x)

Proof of Theorem rr19.28v
StepHypRef Expression
1 simpl 109 . . . . . 6  |-  ( (
ph  /\  ps )  ->  ph )
21ralimi 2560 . . . . 5  |-  ( A. y  e.  A  ( ph  /\  ps )  ->  A. y  e.  A  ph )
3 biidd 172 . . . . . 6  |-  ( y  =  x  ->  ( ph 
<-> 
ph ) )
43rspcv 2864 . . . . 5  |-  ( x  e.  A  ->  ( A. y  e.  A  ph 
->  ph ) )
52, 4syl5 32 . . . 4  |-  ( x  e.  A  ->  ( A. y  e.  A  ( ph  /\  ps )  ->  ph ) )
6 simpr 110 . . . . . 6  |-  ( (
ph  /\  ps )  ->  ps )
76ralimi 2560 . . . . 5  |-  ( A. y  e.  A  ( ph  /\  ps )  ->  A. y  e.  A  ps )
87a1i 9 . . . 4  |-  ( x  e.  A  ->  ( A. y  e.  A  ( ph  /\  ps )  ->  A. y  e.  A  ps ) )
95, 8jcad 307 . . 3  |-  ( x  e.  A  ->  ( A. y  e.  A  ( ph  /\  ps )  ->  ( ph  /\  A. y  e.  A  ps ) ) )
109ralimia 2558 . 2  |-  ( A. x  e.  A  A. y  e.  A  ( ph  /\  ps )  ->  A. x  e.  A  ( ph  /\  A. y  e.  A  ps )
)
11 r19.28av 2633 . . 3  |-  ( (
ph  /\  A. y  e.  A  ps )  ->  A. y  e.  A  ( ph  /\  ps )
)
1211ralimi 2560 . 2  |-  ( A. x  e.  A  ( ph  /\  A. y  e.  A  ps )  ->  A. x  e.  A  A. y  e.  A  ( ph  /\  ps )
)
1310, 12impbii 126 1  |-  ( A. x  e.  A  A. y  e.  A  ( ph  /\  ps )  <->  A. x  e.  A  ( ph  /\ 
A. y  e.  A  ps ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 104    <-> wb 105    e. wcel 2167   A.wral 2475
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 710  ax-5 1461  ax-7 1462  ax-gen 1463  ax-ie1 1507  ax-ie2 1508  ax-8 1518  ax-10 1519  ax-11 1520  ax-i12 1521  ax-bndl 1523  ax-4 1524  ax-17 1540  ax-i9 1544  ax-ial 1548  ax-i5r 1549  ax-ext 2178
This theorem depends on definitions:  df-bi 117  df-tru 1367  df-nf 1475  df-sb 1777  df-clab 2183  df-cleq 2189  df-clel 2192  df-nfc 2328  df-ral 2480  df-v 2765
This theorem is referenced by: (None)
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