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Theorem eqrelriiv 4705
Description: Inference from extensionality principle for relations. (Contributed by NM, 17-Mar-1995.)
Hypotheses
Ref Expression
eqreliiv.1 Rel 𝐴
eqreliiv.2 Rel 𝐵
eqreliiv.3 (⟨𝑥, 𝑦⟩ ∈ 𝐴 ↔ ⟨𝑥, 𝑦⟩ ∈ 𝐵)
Assertion
Ref Expression
eqrelriiv 𝐴 = 𝐵
Distinct variable groups:   𝑥,𝑦,𝐴   𝑥,𝐵,𝑦

Proof of Theorem eqrelriiv
StepHypRef Expression
1 eqreliiv.1 . 2 Rel 𝐴
2 eqreliiv.2 . 2 Rel 𝐵
3 eqreliiv.3 . . 3 (⟨𝑥, 𝑦⟩ ∈ 𝐴 ↔ ⟨𝑥, 𝑦⟩ ∈ 𝐵)
43eqrelriv 4704 . 2 ((Rel 𝐴 ∧ Rel 𝐵) → 𝐴 = 𝐵)
51, 2, 4mp2an 424 1 𝐴 = 𝐵
Colors of variables: wff set class
Syntax hints:  wb 104   = wceq 1348  wcel 2141  cop 3586  Rel wrel 4616
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 704  ax-5 1440  ax-7 1441  ax-gen 1442  ax-ie1 1486  ax-ie2 1487  ax-8 1497  ax-10 1498  ax-11 1499  ax-i12 1500  ax-bndl 1502  ax-4 1503  ax-17 1519  ax-i9 1523  ax-ial 1527  ax-i5r 1528  ax-14 2144  ax-ext 2152  ax-sep 4107  ax-pow 4160  ax-pr 4194
This theorem depends on definitions:  df-bi 116  df-3an 975  df-tru 1351  df-nf 1454  df-sb 1756  df-clab 2157  df-cleq 2163  df-clel 2166  df-nfc 2301  df-v 2732  df-un 3125  df-in 3127  df-ss 3134  df-pw 3568  df-sn 3589  df-pr 3590  df-op 3592  df-opab 4051  df-xp 4617  df-rel 4618
This theorem is referenced by:  eqbrriv  4706  inopab  4743  difopab  4744  dfres2  4943  cnvopab  5012  cnv0  5014  cnvdif  5017  cnvcnvsn  5087  dfco2  5110  coiun  5120  co02  5124  coass  5129  ressn  5151
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