Theorem 3brtr4g 5139

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 5112	. 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 5103

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 1943  ax-6 2000  ax-7 2041  ax-8 2147  ax-9 2155  ax-ext 2732

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 2100  df-clab 2739  df-cleq 2752  df-clel 2835  df-rab 3413  df-v 3452  df-dif 3902  df-un 3904  df-ss 3916  df-nul 4280  df-if 4483  df-sn 4585  df-pr 4587  df-op 4591  df-br 5104

This theorem is used by:  eqbrtrid  5140  enrefnn  9053  limensuci  9151  infensuc  9153  djuen  10205  djudom1  10218  rlimneg  15767  isumsup2  15968  crth  16902  4sqlem6  17068  gzrngunit  21686  matgsum  22699  ovolunlem1a  25764  ovolfiniun  25769  ioombl1lem1  25826  ioombl1lem4  25829  iblss  26072  itgle  26077  dvfsumlem3  26295  emcllem6  27277  gausslemma2dlem0f  27637  gausslemma2dlem0g  27638  pntpbnd1a  27861  ostth2lem4  27912  noinfbnd2lem1  28006  omsmon  34850  itg2gt0cn  38507  dalem-cly  40642  dalem10  40644  fourierdlem103  47135  fourierdlem104  47136