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Theorem cbvex2v 1897
 Description: Rule used to change bound variables, using implicit substitution. (Contributed by NM, 26-Jul-1995.)
Hypothesis
Ref Expression
cbval2v.1
Assertion
Ref Expression
cbvex2v
Distinct variable groups:   ,,   ,,   ,   ,
Allowed substitution hints:   (,)   (,)

Proof of Theorem cbvex2v
StepHypRef Expression
1 nfv 1509 . 2
2 nfv 1509 . 2
3 nfv 1509 . 2
4 nfv 1509 . 2
5 cbval2v.1 . 2
61, 2, 3, 4, 5cbvex2 1895 1
 Colors of variables: wff set class Syntax hints:   wi 4   wa 103   wb 104  wex 1469 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 1424  ax-7 1425  ax-gen 1426  ax-ie1 1470  ax-ie2 1471  ax-8 1483  ax-4 1488  ax-17 1507  ax-i9 1511  ax-ial 1515 This theorem depends on definitions:  df-bi 116  df-nf 1438 This theorem is referenced by:  cbvex4v  1903  th3qlem1  6538
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