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Theorem opelcnv 5820
Description: Ordered-pair membership in converse relation. (Contributed by NM, 13-Aug-1995.)
Hypotheses
Ref Expression
opelcnv.1 𝐴 ∈ V
opelcnv.2 𝐵 ∈ V
Assertion
Ref Expression
opelcnv (⟨𝐴, 𝐵⟩ ∈ 𝑅 ↔ ⟨𝐵, 𝐴⟩ ∈ 𝑅)

Proof of Theorem opelcnv
StepHypRef Expression
1 opelcnv.1 . 2 𝐴 ∈ V
2 opelcnv.2 . 2 𝐵 ∈ V
3 opelcnvg 5819 . 2 ((𝐴 ∈ V ∧ 𝐵 ∈ V) → (⟨𝐴, 𝐵⟩ ∈ 𝑅 ↔ ⟨𝐵, 𝐴⟩ ∈ 𝑅))
41, 2, 3mp2an 692 1 (⟨𝐴, 𝐵⟩ ∈ 𝑅 ↔ ⟨𝐵, 𝐴⟩ ∈ 𝑅)
Colors of variables: wff setvar class
Syntax hints:  wb 206  wcel 2111  Vcvv 3436  cop 4579  ccnv 5613
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1968  ax-7 2009  ax-8 2113  ax-9 2121  ax-ext 2703  ax-sep 5232  ax-nul 5242  ax-pr 5368
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1544  df-fal 1554  df-ex 1781  df-sb 2068  df-clab 2710  df-cleq 2723  df-clel 2806  df-rab 3396  df-v 3438  df-dif 3900  df-un 3902  df-ss 3914  df-nul 4281  df-if 4473  df-sn 4574  df-pr 4576  df-op 4580  df-br 5090  df-opab 5152  df-cnv 5622
This theorem is referenced by:  cnvopab  6083  cnvopabOLD  6084  cnvdif  6090  dfrel2  6136  cnvcnvsn  6166  cnvresima  6177  dfco2  6192  cnviin  6233  fcnvres  6700  cnvf1olem  8040  cnvimadfsn  8102  dmtpos  8168  dftpos4  8175  tpostpos  8176  brsdom2  9014  fsumcom2  15681  fprodcom2  15891  gsumcom2  19887  metustsym  24470  gsumhashmul  33041  cnvco1  35803  cnvco2  35804  cnviun  43742  tposideq  48987
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