Theorem 3brtr4g 5144

Description: Substitution of equality into both sides of a binary relation. (Contributed by NM, 16-Jan-1997.)

Hypotheses

Ref	Expression
3brtr4g.1	⊢ (𝜑 → 𝐴𝑅𝐵)
3brtr4g.2	⊢ 𝐶 = 𝐴
3brtr4g.3	⊢ 𝐷 = 𝐵

Assertion

Ref	Expression
3brtr4g	⊢ (𝜑 → 𝐶𝑅𝐷)

Proof of Theorem 3brtr4g

Step	Hyp	Ref	Expression
1		3brtr4g.1	. 2 ⊢ (𝜑 → 𝐴𝑅𝐵)
2		3brtr4g.2	. . 3 ⊢ 𝐶 = 𝐴
3		3brtr4g.3	. . 3 ⊢ 𝐷 = 𝐵
4	2, 3	breq12i 5117	. 2 ⊢ (𝐶𝑅𝐷 ↔ 𝐴𝑅𝐵)
5	1, 4	sylibr 237	1 ⊢ (𝜑 → 𝐶𝑅𝐷)

This proof depends on syntax axioms:   → wi 4   = wceq 1569   class class class wbr 5108

This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1824  ax-4 1838  ax-5 1939  ax-6 1996  ax-7 2037  ax-8 2144  ax-9 2152  ax-ext 2734

This proof depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3an 1104  df-tru 1572  df-fal 1582  df-ex 1809  df-sb 2096  df-clab 2741  df-cleq 2754  df-clel 2837  df-rab 3416  df-v 3456  df-dif 3907  df-un 3909  df-ss 3921  df-nul 4286  df-if 4487  df-sn 4589  df-pr 4591  df-op 4595  df-br 5109

This theorem is used by:  eqbrtrid  5145  enrefnn  9041  limensuci  9139  infensuc  9141  djuen  10160  djudom1  10173  rlimneg  15705  isumsup2  15907  crth  16843  4sqlem6  17009  gzrngunit  21594  matgsum  22605  ovolunlem1a  25666  ovolfiniun  25671  ioombl1lem1  25728  ioombl1lem4  25731  iblss  25975  itgle  25980  dvfsumlem3  26198  emcllem6  27176  gausslemma2dlem0f  27536  gausslemma2dlem0g  27537  pntpbnd1a  27760  ostth2lem4  27811  noinfbnd2lem1  27905  omsmon  34697  itg2gt0cn  38354  dalem-cly  40473  dalem10  40475  fourierdlem103  46951  fourierdlem104  46952