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Theorem eqbrtri 3944
Description: Substitution of equal classes into a binary relation. (Contributed by NM, 5-Aug-1993.)
Hypotheses
Ref Expression
eqbrtr.1 𝐴 = 𝐵
eqbrtr.2 𝐵𝑅𝐶
Assertion
Ref Expression
eqbrtri 𝐴𝑅𝐶

Proof of Theorem eqbrtri
StepHypRef Expression
1 eqbrtr.2 . 2 𝐵𝑅𝐶
2 eqbrtr.1 . . 3 𝐴 = 𝐵
32breq1i 3931 . 2 (𝐴𝑅𝐶𝐵𝑅𝐶)
41, 3mpbir 145 1 𝐴𝑅𝐶
Colors of variables: wff set class
Syntax hints:   = wceq 1331   class class class wbr 3924
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-io 698  ax-5 1423  ax-7 1424  ax-gen 1425  ax-ie1 1469  ax-ie2 1470  ax-8 1482  ax-10 1483  ax-11 1484  ax-i12 1485  ax-bndl 1486  ax-4 1487  ax-17 1506  ax-i9 1510  ax-ial 1514  ax-i5r 1515  ax-ext 2119
This theorem depends on definitions:  df-bi 116  df-3an 964  df-tru 1334  df-nf 1437  df-sb 1736  df-clab 2124  df-cleq 2130  df-clel 2133  df-nfc 2268  df-v 2683  df-un 3070  df-sn 3528  df-pr 3529  df-op 3531  df-br 3925
This theorem is referenced by:  eqbrtrri  3946  3brtr4i  3953  exmidonfinlem  7042  neg1lt0  8821  halflt1  8930  3halfnz  9141  declei  9210  numlti  9211  faclbnd3  10482  geo2lim  11278  0.999...  11283  geoihalfsum  11284  tan0  11427  cos2bnd  11456  sin4lt0  11462  eirraplem  11472  1nprm  11784  znnen  11900  tan4thpi  12911  ex-fl  12926  trilpolemisumle  13220
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