Theorem cnveqd 4511

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 4509	. 2 ⊢ (𝐴 = 𝐵 → ◡𝐴 = ◡𝐵)
3	1, 2	syl 14	1 ⊢ (𝜑 → ◡𝐴 = ◡𝐵)

Syntax hints:   → wi 4   = wceq 1243  ^◡ccnv 4344

This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 99  ax-ia2 100  ax-ia3 101  ax-io 630  ax-5 1336  ax-7 1337  ax-gen 1338  ax-ie1 1382  ax-ie2 1383  ax-8 1395  ax-10 1396  ax-11 1397  ax-i12 1398  ax-bndl 1399  ax-4 1400  ax-17 1419  ax-i9 1423  ax-ial 1427  ax-i5r 1428  ax-ext 2022

This theorem depends on definitions:  df-bi 110  df-nf 1350  df-sb 1646  df-clab 2027  df-cleq 2033  df-clel 2036  df-nfc 2167  df-in 2924  df-ss 2931  df-br 3765  df-opab 3819  df-cnv 4353

This theorem is referenced by:  cnvsng  4806  cores2  4833  suppssof1  5728  2ndval2  5783  2nd1st  5806  cnvf1olem  5845  brtpos2  5866  dftpos4  5878  tpostpos  5879  tposf12  5884  xpcomco  6300