Theorem eqbrtri 4104

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

Step	Hyp	Ref	Expression
1		eqbrtr.2	. 2 ⊢ 𝐵𝑅𝐶
2		eqbrtr.1	. . 3 ⊢ 𝐴 = 𝐵
3	2	breq1i 4090	. 2 ⊢ (𝐴𝑅𝐶 ↔ 𝐵𝑅𝐶)
4	1, 3	mpbir 146	1 ⊢ 𝐴𝑅𝐶

Syntax hints:   = wceq 1395   class class class wbr 4083

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 714  ax-5 1493  ax-7 1494  ax-gen 1495  ax-ie1 1539  ax-ie2 1540  ax-8 1550  ax-10 1551  ax-11 1552  ax-i12 1553  ax-bndl 1555  ax-4 1556  ax-17 1572  ax-i9 1576  ax-ial 1580  ax-i5r 1581  ax-ext 2211

This theorem depends on definitions:  df-bi 117  df-3an 1004  df-tru 1398  df-nf 1507  df-sb 1809  df-clab 2216  df-cleq 2222  df-clel 2225  df-nfc 2361  df-v 2801  df-un 3201  df-sn 3672  df-pr 3673  df-op 3675  df-br 4084

This theorem is referenced by:  eqbrtrri  4106  3brtr4i  4113  exmidpw2en  7082  exmidonfinlem  7379  neg1lt0  9226  halflt1  9336  3halfnz  9552  declei  9621  numlti  9622  faclbnd3  10973  geo2lim  12035  0.999...  12040  geoihalfsum  12041  fprodap0  12140  fprodap0f  12155  tan0  12250  cos2bnd  12279  sin4lt0  12286  eirraplem  12296  1nprm  12644  znnen  12977  cnfldstr  14530  tan4thpi  15523  zabsle1  15686  ex-fl  16113  trilpolemisumle  16436