Theorem opabbidv 4197

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

Step	Hyp	Ref	Expression
1		nfv 1581	. 2 |- F/ x ph
2		nfv 1581	. 2 |- F/ y ph
3		opabbidv.1	. 2 |- ( ph -> ( ps <-> ch ) )
4	1, 2, 3	opabbid 4196	1 |- ( ph -> { <. x , y >. | ps } = { <. x , y >. | ch } )

This proof depends on syntax axioms:   -> wi 4   <-> wb 105   = wceq 1402   {copab 4191

This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-11 1559  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-ext 2220

This proof depends on definitions:  df-bi 117  df-tru 1405  df-nf 1514  df-sb 1816  df-clab 2225  df-cleq 2231  df-opab 4193

This theorem is used by:  opabbii  4198  csbopabg  4209  xpeq1  4788  xpeq2  4789  opabbi2dv  4929  csbcnvg  4964  resopab2  5110  mptcnv  5190  cores  5291  xpcom  5334  dffn5im  5748  f1oiso2  6033  f1ocnvd  6292  f1o3d  6298  ofreq  6306  f1od2  6471  shftfvalg  11597  shftfval  11600  2shfti  11610  releqgg  14072  eqgex  14073  eqgfval  14074  prdsex  14221  prdsval  14222  dvdsrvald  14449  dvdsrpropdg  14503  aprval  14640  aprap  14647  aprprop  14650  lmfval  15343  lgsquadlem3  16296  wksfval  16661  trlsfvalg  16722  eupthsg  16784