Theorem eqbrtrdi 4090

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 4061	. 2 ⊢ (𝜑 → (𝐴𝑅𝐶 ↔ 𝐵𝑅𝐶))
4	1, 3	mpbiri 168	1 ⊢ (𝜑 → 𝐴𝑅𝐶)

Syntax hints:   → wi 4   = wceq 1373   class class class wbr 4051

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 2188

This theorem depends on definitions:  df-bi 117  df-3an 983  df-tru 1376  df-nf 1485  df-sb 1787  df-clab 2193  df-cleq 2199  df-clel 2202  df-nfc 2338  df-v 2775  df-un 3174  df-sn 3644  df-pr 3645  df-op 3647  df-br 4052

This theorem is referenced by:  eqbrtrrdi  4091  pm54.43  7313  recapb  8764  nn0ledivnn  9909  xltnegi  9977  leexp1a  10761  facwordi  10907  faclbnd3  10910  resqrexlemlo  11399  efap0  12063  dvds1  12239  en1top  14624  dvef  15274  rpabscxpbnd  15487  zabsle1  15551  lgseisen  15626  lgsquadlem2  15630  trirec0  16124