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Theorem brab 5533
Description: The law of concretion for a binary relation. (Contributed by NM, 16-Aug-1999.)
Hypotheses
Ref Expression
opelopab.1 𝐴 ∈ V
opelopab.2 𝐵 ∈ V
opelopab.3 (𝑥 = 𝐴 → (𝜑𝜓))
opelopab.4 (𝑦 = 𝐵 → (𝜓𝜒))
brab.5 𝑅 = {⟨𝑥, 𝑦⟩ ∣ 𝜑}
Assertion
Ref Expression
brab (𝐴𝑅𝐵𝜒)
Distinct variable groups:   𝑥,𝑦,𝐴   𝑥,𝐵,𝑦   𝜒,𝑥,𝑦
Allowed substitution hints:   𝜑(𝑥, 𝑦)   𝜓(𝑥, 𝑦)   𝑅(𝑥, 𝑦)

Proof of Theorem brab
StepHypRef Expression
1 opelopab.1 . 2 𝐴 ∈ V
2 opelopab.2 . 2 𝐵 ∈ V
3 opelopab.3 . . 3 (𝑥 = 𝐴 → (𝜑𝜓))
4 opelopab.4 . . 3 (𝑦 = 𝐵 → (𝜓𝜒))
5 brab.5 . . 3 𝑅 = {⟨𝑥, 𝑦⟩ ∣ 𝜑}
63, 4, 5brabg 5529 . 2 ((𝐴 ∈ V ∧ 𝐵 ∈ V) → (𝐴𝑅𝐵𝜒))
71, 2, 6mp2an 705 1 (𝐴𝑅𝐵𝜒)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:  wi 4  wb 209   = wceq 1570  wcel 2146  Vcvv 3458   class class class wbr 5114  {copab 5178
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 2148  ax-9 2156  ax-ext 2738  ax-sep 5262  ax-pr 5409
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 2745  df-cleq 2758  df-clel 2841  df-rab 3420  df-v 3460  df-dif 3911  df-un 3913  df-in 3915  df-ss 3925  df-nul 4290  df-if 4493  df-sn 4595  df-pr 4597  df-op 4601  df-br 5115  df-opab 5179
This theorem is used by:  opbrop  5764  f1oweALT  7978  frxp  8131  fnwelem  8136  xpord2lem  8147  xpord3lem  8154  poseq  8163  dftpos4  8250  dfac3  10124  axdc2lem  10450  brdom7disj  10533  brdom6disj  10534  ordpipq  10945  ltresr  11143  shftfn  15136  2shfti  15143  ishpg  29078  brcgr  29287  ex-opab  30820  br8d  32990  fineqvnttrclselem3  35560  fineqvnttrclse  35561  vonf1wev  35616  vonf1owevOLD  35618  vonf1osev  35620  br8  36269  br6  36270  br4  36271  dfbigcup2  36410  brsegle  36621  heiborlem2  38504  nthrucw  47648
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