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Theorem eqbrtri 4151
Description: Substitution of equal classes into a binary relation. (Contributed by NM, 5-Aug-1993.)
Hypotheses
Ref Expression
eqbrtr.1  |-  A  =  B
eqbrtr.2  |-  B R C
Assertion
Ref Expression
eqbrtri  |-  A R C

Proof of Theorem eqbrtri
StepHypRef Expression
1 eqbrtr.2 . 2  |-  B R C
2 eqbrtr.1 . . 3  |-  A  =  B
32breq1i 4137 . 2  |-  ( A R C  <->  B R C )
41, 3mpbir 146 1  |-  A R C
Colors of variables:    wff set class
This proof depends on syntax axioms:    = wceq 1402   class class class wbr 4130
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-ext 2220
This proof depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  df-nf 1514  df-sb 1816  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-v 2823  df-un 3224  df-sn 3715  df-pr 3716  df-op 3718  df-br 4131
This theorem is used by:  eqbrtrri  4153  3brtr4i  4160  exmidpw2en  7219  exmidonfinlem  7545  neg1lt0  9414  halflt1  9526  3halfnz  9747  declei  9821  numlti  9822  faclbnd3  11195  geo2lim  12299  0.999...  12304  geoihalfsum  12305  fprodap0  12404  fprodap0f  12419  tan0  12514  cos2bnd  12543  sin4lt0  12550  eirraplem  12560  1nprm  12908  ballotfilemth  13330  znnen  13338  cnfldstr  14944  tan4thpi  15992  log2tlbndlog2  16139  ppiqltx  16183  zabsle1  16216  ex-fl  16837  trilpolemisumle  17185
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