Theorem eqbrtrdi 4082

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 4053	. 2 ⊢ (𝜑 → (𝐴𝑅𝐶 ↔ 𝐵𝑅𝐶))
4	1, 3	mpbiri 168	1 ⊢ (𝜑 → 𝐴𝑅𝐶)

Syntax hints:   → wi 4   = wceq 1372   class class class wbr 4043

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 710  ax-5 1469  ax-7 1470  ax-gen 1471  ax-ie1 1515  ax-ie2 1516  ax-8 1526  ax-10 1527  ax-11 1528  ax-i12 1529  ax-bndl 1531  ax-4 1532  ax-17 1548  ax-i9 1552  ax-ial 1556  ax-i5r 1557  ax-ext 2186

This theorem depends on definitions:  df-bi 117  df-3an 982  df-tru 1375  df-nf 1483  df-sb 1785  df-clab 2191  df-cleq 2197  df-clel 2200  df-nfc 2336  df-v 2773  df-un 3169  df-sn 3638  df-pr 3639  df-op 3641  df-br 4044

This theorem is referenced by:  eqbrtrrdi  4083  pm54.43  7280  recapb  8726  nn0ledivnn  9871  xltnegi  9939  leexp1a  10720  facwordi  10866  faclbnd3  10869  resqrexlemlo  11243  efap0  11907  dvds1  12083  en1top  14467  dvef  15117  rpabscxpbnd  15330  zabsle1  15394  lgseisen  15469  lgsquadlem2  15473  trirec0  15847