Theorem 3brtr4g 5102

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 5077	. 2 ⊢ (𝐶𝑅𝐷 ↔ 𝐴𝑅𝐵)
5	1, 4	sylibr 236	1 ⊢ (𝜑 → 𝐶𝑅𝐷)

Syntax hints:   → wi 4   = wceq 1537   class class class wbr 5068

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2116  ax-9 2124  ax-10 2145  ax-11 2161  ax-12 2177  ax-ext 2795

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3an 1085  df-tru 1540  df-ex 1781  df-nf 1785  df-sb 2070  df-clab 2802  df-cleq 2816  df-clel 2895  df-nfc 2965  df-rab 3149  df-v 3498  df-dif 3941  df-un 3943  df-in 3945  df-ss 3954  df-nul 4294  df-if 4470  df-sn 4570  df-pr 4572  df-op 4576  df-br 5069

This theorem is referenced by:  eqbrtrid  5103  enpr2d  8599  limensuci  8695  infensuc  8697  djuen  9597  djudom1  9610  rlimneg  15005  isumsup2  15203  crth  16117  4sqlem6  16281  gzrngunit  20613  matgsum  21048  ovolunlem1a  24099  ovolfiniun  24104  ioombl1lem1  24161  ioombl1lem4  24164  iblss  24407  itgle  24412  dvfsumlem3  24627  emcllem6  25580  gausslemma2dlem0f  25939  gausslemma2dlem0g  25940  pntpbnd1a  26163  ostth2lem4  26214  omsmon  31558  itg2gt0cn  34949  dalem-cly  36809  dalem10  36811  fourierdlem103  42501  fourierdlem104  42502