Theorem cnveqd 4710

Description: Equality deduction for converse. (Contributed by NM, 6-Dec-2013.)

Hypothesis

Ref	Expression
cnveqd.1	⊢ (𝜑 → 𝐴 = 𝐵)

Assertion

Ref	Expression
cnveqd	⊢ (𝜑 → ◡𝐴 = ◡𝐵)

Proof of Theorem cnveqd

Step	Hyp	Ref	Expression
1		cnveqd.1	. 2 ⊢ (𝜑 → 𝐴 = 𝐵)
2		cnveq 4708	. 2 ⊢ (𝐴 = 𝐵 → ◡𝐴 = ◡𝐵)
3	1, 2	syl 14	1 ⊢ (𝜑 → ◡𝐴 = ◡𝐵)

Syntax hints:   → wi 4   = wceq 1331  ^◡ccnv 4533

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 698  ax-5 1423  ax-7 1424  ax-gen 1425  ax-ie1 1469  ax-ie2 1470  ax-8 1482  ax-10 1483  ax-11 1484  ax-i12 1485  ax-bndl 1486  ax-4 1487  ax-17 1506  ax-i9 1510  ax-ial 1514  ax-i5r 1515  ax-ext 2119

This theorem depends on definitions:  df-bi 116  df-nf 1437  df-sb 1736  df-clab 2124  df-cleq 2130  df-clel 2133  df-nfc 2268  df-in 3072  df-ss 3079  df-br 3925  df-opab 3985  df-cnv 4542

This theorem is referenced by:  cnvsng  5019  cores2  5046  suppssof1  5992  2ndval2  6047  2nd1st  6071  cnvf1olem  6114  brtpos2  6141  dftpos4  6153  tpostpos  6154  tposf12  6159  xpcomco  6713  infeq123d  6896  fsumcnv  11199  ennnfonelemf1  11920  txswaphmeolem  12478