Theorem eqbrtrdi 4164

Description: A chained equality inference for a binary relation. (Contributed by NM, 12-Oct-1999.)

Hypotheses

Ref	Expression
eqbrtrdi.1	⊢ (𝜑 → 𝐴 = 𝐵)
eqbrtrdi.2	⊢ 𝐵𝑅𝐶

Assertion

Ref	Expression
eqbrtrdi	⊢ (𝜑 → 𝐴𝑅𝐶)

Proof of Theorem eqbrtrdi

Step	Hyp	Ref	Expression
1		eqbrtrdi.2	. 2 ⊢ 𝐵𝑅𝐶
2		eqbrtrdi.1	. . 3 ⊢ (𝜑 → 𝐴 = 𝐵)
3	2	breq1d 4135	. 2 ⊢ (𝜑 → (𝐴𝑅𝐶 ↔ 𝐵𝑅𝐶))
4	1, 3	mpbiri 168	1 ⊢ (𝜑 → 𝐴𝑅𝐶)

Syntax hints:   → wi 4   = wceq 1402   class class class wbr 4125

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 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 theorem 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 3711  df-pr 3712  df-op 3714  df-br 4126

This theorem is referenced by:  eqbrtrrdi  4165  pm54.43  7526  recapb  8991  nn0ledivnn  10147  xltnegi  10216  leexp1a  11009  facwordi  11156  faclbnd3  11159  resqrexlemlo  11757  efap0  12422  dvds1  12598  ballotfilemrc  13252  en1top  15101  dvef  15751  rpabscxpbnd  15965  zabsle1  16032  lgseisen  16107  lgsquadlem2  16111  upgr2wlkdc  16532  trirec0  16998