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Theorem csbief 3014
Description: Conversion of implicit substitution to explicit substitution into a class. (Contributed by NM, 26-Nov-2005.) (Revised by Mario Carneiro, 13-Oct-2016.)
Hypotheses
Ref Expression
csbief.1  |-  A  e. 
_V
csbief.2  |-  F/_ x C
csbief.3  |-  ( x  =  A  ->  B  =  C )
Assertion
Ref Expression
csbief  |-  [_ A  /  x ]_ B  =  C
Distinct variable group:    x, A
Allowed substitution hints:    B( x)    C( x)

Proof of Theorem csbief
StepHypRef Expression
1 csbief.1 . 2  |-  A  e. 
_V
2 csbief.2 . . . 4  |-  F/_ x C
32a1i 9 . . 3  |-  ( A  e.  _V  ->  F/_ x C )
4 csbief.3 . . 3  |-  ( x  =  A  ->  B  =  C )
53, 4csbiegf 3013 . 2  |-  ( A  e.  _V  ->  [_ A  /  x ]_ B  =  C )
61, 5ax-mp 5 1  |-  [_ A  /  x ]_ B  =  C
Colors of variables: wff set class
Syntax hints:    -> wi 4    = wceq 1316    e. wcel 1465   F/_wnfc 2245   _Vcvv 2660   [_csb 2975
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-io 683  ax-5 1408  ax-7 1409  ax-gen 1410  ax-ie1 1454  ax-ie2 1455  ax-8 1467  ax-10 1468  ax-11 1469  ax-i12 1470  ax-bndl 1471  ax-4 1472  ax-17 1491  ax-i9 1495  ax-ial 1499  ax-i5r 1500  ax-ext 2099
This theorem depends on definitions:  df-bi 116  df-3an 949  df-tru 1319  df-nf 1422  df-sb 1721  df-clab 2104  df-cleq 2110  df-clel 2113  df-nfc 2247  df-v 2662  df-sbc 2883  df-csb 2976
This theorem is referenced by:  csbie  3015  csbing  3253  csbopabg  3976  pofun  4204  csbima12g  4870  csbiotag  5086  csbriotag  5710  csbov123g  5777  eqerlem  6428  zsumdc  11121
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