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Theorem raaan 4082
Description: Rearrange restricted quantifiers. (Contributed by NM, 26-Oct-2010.)
Hypotheses
Ref Expression
raaan.1  |-  F/ y
ph
raaan.2  |-  F/ x ps
Assertion
Ref Expression
raaan  |-  ( A. x  e.  A  A. y  e.  A  ( ph  /\  ps )  <->  ( A. x  e.  A  ph  /\  A. y  e.  A  ps ) )
Distinct variable group:    x, y, A
Allowed substitution hints:    ph( x, y)    ps( x, y)

Proof of Theorem raaan
StepHypRef Expression
1 rzal 4073 . . 3  |-  ( A  =  (/)  ->  A. x  e.  A  A. y  e.  A  ( ph  /\ 
ps ) )
2 rzal 4073 . . 3  |-  ( A  =  (/)  ->  A. x  e.  A  ph )
3 rzal 4073 . . 3  |-  ( A  =  (/)  ->  A. y  e.  A  ps )
4 pm5.1 902 . . 3  |-  ( ( A. x  e.  A  A. y  e.  A  ( ph  /\  ps )  /\  ( A. x  e.  A  ph  /\  A. y  e.  A  ps ) )  ->  ( A. x  e.  A  A. y  e.  A  ( ph  /\  ps )  <->  ( A. x  e.  A  ph 
/\  A. y  e.  A  ps ) ) )
51, 2, 3, 4syl12anc 1324 . 2  |-  ( A  =  (/)  ->  ( A. x  e.  A  A. y  e.  A  ( ph  /\  ps )  <->  ( A. x  e.  A  ph  /\  A. y  e.  A  ps ) ) )
6 raaan.1 . . . . 5  |-  F/ y
ph
76r19.28z 4063 . . . 4  |-  ( A  =/=  (/)  ->  ( A. y  e.  A  ( ph  /\  ps )  <->  ( ph  /\ 
A. y  e.  A  ps ) ) )
87ralbidv 2986 . . 3  |-  ( A  =/=  (/)  ->  ( A. x  e.  A  A. y  e.  A  ( ph  /\  ps )  <->  A. x  e.  A  ( ph  /\ 
A. y  e.  A  ps ) ) )
9 nfcv 2764 . . . . 5  |-  F/_ x A
10 raaan.2 . . . . 5  |-  F/ x ps
119, 10nfral 2945 . . . 4  |-  F/ x A. y  e.  A  ps
1211r19.27z 4070 . . 3  |-  ( A  =/=  (/)  ->  ( A. x  e.  A  ( ph  /\  A. y  e.  A  ps )  <->  ( A. x  e.  A  ph  /\  A. y  e.  A  ps ) ) )
138, 12bitrd 268 . 2  |-  ( A  =/=  (/)  ->  ( A. x  e.  A  A. y  e.  A  ( ph  /\  ps )  <->  ( A. x  e.  A  ph  /\  A. y  e.  A  ps ) ) )
145, 13pm2.61ine 2877 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 setvar class
Syntax hints:    <-> wb 196    /\ wa 384    = wceq 1483   F/wnf 1708    =/= wne 2794   A.wral 2912   (/)c0 3915
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602
This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-ral 2917  df-v 3202  df-dif 3577  df-nul 3916
This theorem is referenced by:  raaanv  4083
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