ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  eqbrtri Unicode version

Theorem eqbrtri 4152
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 4138 . 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 4131
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 4132
This theorem is used by:  eqbrtrri  4154  3brtr4i  4161  exmidpw2en  7223  exmidonfinlem  7551  neg1lt0  9421  halflt1  9533  3halfnz  9754  declei  9828  numlti  9829  faclbnd3  11203  geo2lim  12308  0.999...  12313  geoihalfsum  12314  fprodap0  12413  fprodap0f  12428  tan0  12523  cos2bnd  12552  sin4lt0  12559  eirraplem  12569  1nprm  12917  ballotfilemth  13339  znnen  13347  cnfldstr  15004  tan4thpi  16068  log2tlbndlog2  16220  ppiqltx  16281  bposlem8  16318  zabsle1  16323  ex-fl  16944  trilpolemisumle  17294
  Copyright terms: Public domain W3C validator