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Theorem breqan12d 4147
Description: Equality deduction for a binary relation. (Contributed by NM, 8-Feb-1996.)
Hypotheses
Ref Expression
breq1d.1 (𝜑 → 𝐴 = 𝐵)
breqan12i.2 (𝜓 → 𝐶 = 𝐷)
Assertion
Ref Expression
breqan12d ((𝜑 ∧ 𝜓) → (𝐴𝑅𝐶 ↔ 𝐵𝑅𝐷))

Proof of Theorem breqan12d
StepHypRef Expression
1 breq1d.1 . 2 (𝜑 → 𝐴 = 𝐵)
2 breqan12i.2 . 2 (𝜓 → 𝐶 = 𝐷)
3 breq12 4136 . 2 ((𝐴 = 𝐵 ∧ 𝐶 = 𝐷) → (𝐴𝑅𝐶 ↔ 𝐵𝑅𝐷))
41, 2, 3syl2an 289 1 ((𝜑 ∧ 𝜓) → (𝐴𝑅𝐶 ↔ 𝐵𝑅𝐷))
Colors of variables:    wff set class
This proof depends on syntax axioms:   → wi 4   ∧ wa 104   ↔ wb 105   = wceq 1402   class class class wbr 4131
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-ext 2220
This proof depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  df-nf 1514  df-sb 1816  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-v 2823  df-un 3224  df-sn 3715  df-pr 3716  df-op 3718  df-br 4132
This theorem is used by:  breqan12rd  4148  sosng  4850  isoresbr  6018  isoid  6019  isores3  6024  isoini2  6028  ofrfval  6315  oviec  6919  enqbreq2  7730  ltresr2  8213  axpre-ltadd  8259  leltadd  8782  xltneg  10255  lt2sq  11071  le2sq  11072  cnreim  11766  sqrtle  11824  sqrtlt  11825  absext  11851  reefiso  16003  reaplog  16097  logltb  16104  birthdaylem3  16227  lgsquadlem3  16403
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