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Theorem opabbidv 3962
Description: Equivalent wff's yield equal ordered-pair class abstractions (deduction form). (Contributed by NM, 15-May-1995.)
Hypothesis
Ref Expression
opabbidv.1  |-  ( ph  ->  ( ps  <->  ch )
)
Assertion
Ref Expression
opabbidv  |-  ( ph  ->  { <. x ,  y
>.  |  ps }  =  { <. x ,  y
>.  |  ch } )
Distinct variable groups:    ph, x    ph, y
Allowed substitution hints:    ps( x, y)    ch( x, y)

Proof of Theorem opabbidv
StepHypRef Expression
1 nfv 1491 . 2  |-  F/ x ph
2 nfv 1491 . 2  |-  F/ y
ph
3 opabbidv.1 . 2  |-  ( ph  ->  ( ps  <->  ch )
)
41, 2, 3opabbid 3961 1  |-  ( ph  ->  { <. x ,  y
>.  |  ps }  =  { <. x ,  y
>.  |  ch } )
Colors of variables: wff set class
Syntax hints:    -> wi 4    <-> wb 104    = wceq 1314   {copab 3956
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-5 1406  ax-7 1407  ax-gen 1408  ax-ie1 1452  ax-ie2 1453  ax-8 1465  ax-11 1467  ax-4 1470  ax-17 1489  ax-i9 1493  ax-ial 1497  ax-i5r 1498  ax-ext 2097
This theorem depends on definitions:  df-bi 116  df-tru 1317  df-nf 1420  df-sb 1719  df-clab 2102  df-cleq 2108  df-opab 3958
This theorem is referenced by:  opabbii  3963  csbopabg  3974  xpeq1  4521  xpeq2  4522  opabbi2dv  4656  csbcnvg  4691  resopab2  4834  mptcnv  4909  cores  5010  xpcom  5053  dffn5im  5433  f1oiso2  5694  f1ocnvd  5938  ofreq  5951  f1od2  6098  shftfvalg  10530  shftfval  10533  2shfti  10543  lmfval  12256
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