Theorem 3brtr4g 5142

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 5115	. 2 ⊢ (𝐶𝑅𝐷 ↔ 𝐴𝑅𝐵)
5	1, 4	sylibr 237	1 ⊢ (𝜑 → 𝐶𝑅𝐷)

This proof depends on syntax axioms:   → wi 4   = wceq 1570   class class class wbr 5106

This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1945  ax-6 2002  ax-7 2043  ax-8 2149  ax-9 2157  ax-ext 2735

This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-sb 2102  df-clab 2742  df-cleq 2755  df-clel 2839  df-rab 3417  df-v 3456  df-ss 3901  df-dif 4050  df-un 4154  df-nul 4282  df-if 4486  df-sn 4589  df-pr 4591  df-op 4839  df-br 5107

This theorem is used by:  eqbrtrid  5143  enrefnn  9099  limensuci  9197  infensuc  9199  djuen  10272  djudom1  10285  rlimneg  15840  isumsup2  16041  crth  16981  4sqlem6  17147  gzrngunit  21766  matgsum  22779  ovolunlem1a  25844  ovolfiniun  25849  ioombl1lem1  25906  ioombl1lem4  25909  iblss  26152  itgle  26157  dvfsumlem3  26375  emcllem6  27355  gausslemma2dlem0f  27715  gausslemma2dlem0g  27716  pntpbnd1a  27939  ostth2lem4  27990  noinfbnd2lem1  28114  omsmon  34997  itg2gt0cn  38784  dalem-cly  40919  dalem10  40921  fourierdlem103  47422  fourierdlem104  47423