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Theorem cnveqd 4842
Description: Equality deduction for converse. (Contributed by NM, 6-Dec-2013.)
Hypothesis
Ref Expression
cnveqd.1 (𝜑𝐴 = 𝐵)
Assertion
Ref Expression
cnveqd (𝜑𝐴 = 𝐵)

Proof of Theorem cnveqd
StepHypRef Expression
1 cnveqd.1 . 2 (𝜑𝐴 = 𝐵)
2 cnveq 4840 . 2 (𝐴 = 𝐵𝐴 = 𝐵)
31, 2syl 14 1 (𝜑𝐴 = 𝐵)
Colors of variables: wff set class
Syntax hints:  wi 4   = wceq 1364  ccnv 4662
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 710  ax-5 1461  ax-7 1462  ax-gen 1463  ax-ie1 1507  ax-ie2 1508  ax-8 1518  ax-10 1519  ax-11 1520  ax-i12 1521  ax-bndl 1523  ax-4 1524  ax-17 1540  ax-i9 1544  ax-ial 1548  ax-i5r 1549  ax-ext 2178
This theorem depends on definitions:  df-bi 117  df-nf 1475  df-sb 1777  df-clab 2183  df-cleq 2189  df-clel 2192  df-nfc 2328  df-in 3163  df-ss 3170  df-br 4034  df-opab 4095  df-cnv 4671
This theorem is referenced by:  cnvsng  5155  cores2  5182  suppssof1  6153  2ndval2  6214  2nd1st  6238  cnvf1olem  6282  brtpos2  6309  dftpos4  6321  tpostpos  6322  tposf12  6327  xpcomco  6885  infeq123d  7082  fsumcnv  11602  fprodcnv  11790  ennnfonelemf1  12635  xpsval  12995  grpinvcnv  13200  grplactcnv  13234  eqglact  13355  isunitd  13662  znval  14192  znle2  14208  txswaphmeolem  14556
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