Theorem breqtrdi 4155

Description: A chained equality inference for a binary relation. (Contributed by NM, 11-Oct-1999.)

Hypotheses

Ref	Expression
breqtrdi.1	⊢ (𝜑 → 𝐴𝑅𝐵)
breqtrdi.2	⊢ 𝐵 = 𝐶

Assertion

Ref	Expression
breqtrdi	⊢ (𝜑 → 𝐴𝑅𝐶)

Proof of Theorem breqtrdi

Step	Hyp	Ref	Expression
1		breqtrdi.1	. 2 ⊢ (𝜑 → 𝐴𝑅𝐵)
2		eqid 2234	. 2 ⊢ 𝐴 = 𝐴
3		breqtrdi.2	. 2 ⊢ 𝐵 = 𝐶
4	1, 2, 3	3brtr3g 4147	1 ⊢ (𝜑 → 𝐴𝑅𝐶)

Syntax hints:   → wi 4   = wceq 1398   class class class wbr 4114

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 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-ext 2216

This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-nf 1510  df-sb 1812  df-clab 2221  df-cleq 2227  df-clel 2230  df-nfc 2375  df-v 2817  df-un 3218  df-sn 3700  df-pr 3701  df-op 3703  df-br 4115

This theorem is referenced by:  breqtrrdi  4156  en2eleq  7511  en2other2  7512  dju0en  7534  ltm1sr  8108  maxle2  11922  xrmax2sup  11964  mertenslem2  12247  ege2le3  12382  cos01gt0  12474  sin02gt0  12475  cos12dec  12479  bitsfzolem  12665  bitsmod  12667  unennn  13232  dvef  15718  sin0pilem2  15773  cosq23lt0  15824  cosq34lt1  15841  cos02pilt1  15842  logbgcd1irraplemexp  15959  pellexlem2  15972  lgslem3  16001  lgsquadlem1  16076  lgsquadlem3  16078  trilpolemeq1  16950