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Theorem cnveqd 4956
Description: Equality deduction for converse. (Contributed by NM, 6-Dec-2013.)
Hypothesis
Ref Expression
cnveqd.1  |-  ( ph  ->  A  =  B )
Assertion
Ref Expression
cnveqd  |-  ( ph  ->  `' A  =  `' B )

Proof of Theorem cnveqd
StepHypRef Expression
1 cnveqd.1 . 2  |-  ( ph  ->  A  =  B )
2 cnveq 4954 . 2  |-  ( A  =  B  ->  `' A  =  `' B
)
31, 2syl 14 1  |-  ( ph  ->  `' A  =  `' B )
Colors of variables:    wff set class
This proof depends on syntax axioms:    -> wi 4    = wceq 1402   `'ccnv 4773
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  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-nf 1514  df-sb 1816  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-in 3226  df-ss 3233  df-br 4131  df-opab 4193  df-cnv 4782
This theorem is used by:  cnvsng  5273  cores2  5300  f1o3d  6298  suppssof1  6320  2ndval2  6390  2nd1st  6414  cnvf1olem  6460  brtpos2  6522  dftpos4  6534  tpostpos  6535  tposf12  6540  xpcomco  7124  infeq123d  7356  fsumcnv  12204  fprodcnv  12392  ennnfonelemf1  13309  strslfv3  13398  grpinvcnv  13873  grplactcnv  13907  eqglact  14028  xpsval  14201  isunitd  14413  znval  14971  znle2  14987  txswaphmeolem  15421
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