ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  cnveqd GIF version

Theorem cnveqd 4901
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 4899 . 2 (𝐴 = 𝐵𝐴 = 𝐵)
31, 2syl 14 1 (𝜑𝐴 = 𝐵)
Colors of variables: wff set class
Syntax hints:  wi 4   = wceq 1395  ccnv 4719
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 714  ax-5 1493  ax-7 1494  ax-gen 1495  ax-ie1 1539  ax-ie2 1540  ax-8 1550  ax-10 1551  ax-11 1552  ax-i12 1553  ax-bndl 1555  ax-4 1556  ax-17 1572  ax-i9 1576  ax-ial 1580  ax-i5r 1581  ax-ext 2211
This theorem depends on definitions:  df-bi 117  df-nf 1507  df-sb 1809  df-clab 2216  df-cleq 2222  df-clel 2225  df-nfc 2361  df-in 3203  df-ss 3210  df-br 4084  df-opab 4146  df-cnv 4728
This theorem is referenced by:  cnvsng  5217  cores2  5244  suppssof1  6245  2ndval2  6311  2nd1st  6335  cnvf1olem  6381  brtpos2  6408  dftpos4  6420  tpostpos  6421  tposf12  6426  xpcomco  6998  infeq123d  7199  fsumcnv  11969  fprodcnv  12157  ennnfonelemf1  13010  strslfv3  13099  xpsval  13406  grpinvcnv  13622  grplactcnv  13656  eqglact  13783  isunitd  14091  znval  14621  znle2  14637  txswaphmeolem  15015
  Copyright terms: Public domain W3C validator