Theorem syl6eqbr 3822

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

Hypotheses

Ref	Expression
syl6eqbr.1	⊢ (𝜑 → 𝐴 = 𝐵)
syl6eqbr.2	⊢ 𝐵𝑅𝐶

Assertion

Ref	Expression
syl6eqbr	⊢ (𝜑 → 𝐴𝑅𝐶)

Proof of Theorem syl6eqbr

Step	Hyp	Ref	Expression
1		syl6eqbr.2	. 2 ⊢ 𝐵𝑅𝐶
2		syl6eqbr.1	. . 3 ⊢ (𝜑 → 𝐴 = 𝐵)
3	2	breq1d 3795	. 2 ⊢ (𝜑 → (𝐴𝑅𝐶 ↔ 𝐵𝑅𝐶))
4	1, 3	mpbiri 166	1 ⊢ (𝜑 → 𝐴𝑅𝐶)

Syntax hints:   → wi 4   = wceq 1284   class class class wbr 3785

This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 104  ax-ia2 105  ax-ia3 106  ax-io 662  ax-5 1376  ax-7 1377  ax-gen 1378  ax-ie1 1422  ax-ie2 1423  ax-8 1435  ax-10 1436  ax-11 1437  ax-i12 1438  ax-bndl 1439  ax-4 1440  ax-17 1459  ax-i9 1463  ax-ial 1467  ax-i5r 1468  ax-ext 2063

This theorem depends on definitions:  df-bi 115  df-3an 921  df-tru 1287  df-nf 1390  df-sb 1686  df-clab 2068  df-cleq 2074  df-clel 2077  df-nfc 2208  df-v 2603  df-un 2977  df-sn 3404  df-pr 3405  df-op 3407  df-br 3786

This theorem is referenced by:  syl6eqbrr  3823  pm54.43  6459  nn0ledivnn  8838  xltnegi  8902  leexp1a  9531  facwordi  9667  faclbnd3  9670  resqrexlemlo  9899  dvds1  10253