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Theorem eqbrtrdi 4099
Description: A chained equality inference for a binary relation. (Contributed by NM, 12-Oct-1999.)
Hypotheses
Ref Expression
eqbrtrdi.1 (𝜑𝐴 = 𝐵)
eqbrtrdi.2 𝐵𝑅𝐶
Assertion
Ref Expression
eqbrtrdi (𝜑𝐴𝑅𝐶)

Proof of Theorem eqbrtrdi
StepHypRef Expression
1 eqbrtrdi.2 . 2 𝐵𝑅𝐶
2 eqbrtrdi.1 . . 3 (𝜑𝐴 = 𝐵)
32breq1d 4070 . 2 (𝜑 → (𝐴𝑅𝐶𝐵𝑅𝐶))
41, 3mpbiri 168 1 (𝜑𝐴𝑅𝐶)
Colors of variables: wff set class
Syntax hints:  wi 4   = wceq 1373   class class class wbr 4060
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 711  ax-5 1471  ax-7 1472  ax-gen 1473  ax-ie1 1517  ax-ie2 1518  ax-8 1528  ax-10 1529  ax-11 1530  ax-i12 1531  ax-bndl 1533  ax-4 1534  ax-17 1550  ax-i9 1554  ax-ial 1558  ax-i5r 1559  ax-ext 2189
This theorem depends on definitions:  df-bi 117  df-3an 983  df-tru 1376  df-nf 1485  df-sb 1787  df-clab 2194  df-cleq 2200  df-clel 2203  df-nfc 2339  df-v 2779  df-un 3179  df-sn 3650  df-pr 3651  df-op 3653  df-br 4061
This theorem is referenced by:  eqbrtrrdi  4100  pm54.43  7326  recapb  8781  nn0ledivnn  9926  xltnegi  9994  leexp1a  10778  facwordi  10924  faclbnd3  10927  resqrexlemlo  11485  efap0  12149  dvds1  12325  en1top  14710  dvef  15360  rpabscxpbnd  15573  zabsle1  15637  lgseisen  15712  lgsquadlem2  15716  trirec0  16293
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