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Theorem ralrab 3651
Description: Universal quantification over a restricted class abstraction. (Contributed by Jeff Madsen, 10-Jun-2010.)
Hypothesis
Ref Expression
ralab.1 (𝑦 = 𝑥 → (𝜑 ↔ 𝜓))
Assertion
Ref Expression
ralrab (∀𝑥 ∈ {𝑦 ∈ 𝐴 ∣ 𝜑}𝜒 ↔ ∀𝑥 ∈ 𝐴 (𝜓 → 𝜒))
Distinct variable groups:   𝑥,𝑦   𝑦,𝐴   𝜓,𝑦
Allowed substitution hints:   𝜑(𝑥, 𝑦)   𝜓(𝑥)   𝜒(𝑥, 𝑦)   𝐴(𝑥)

Proof of Theorem ralrab
StepHypRef Expression
1 ralab.1 . . . . 5 (𝑦 = 𝑥 → (𝜑 ↔ 𝜓))
21elrab 3644 . . . 4 (𝑥 ∈ {𝑦 ∈ 𝐴 ∣ 𝜑} ↔ (𝑥 ∈ 𝐴 ∧ 𝜓))
32imbi1i 352 . . 3 ((𝑥 ∈ {𝑦 ∈ 𝐴 ∣ 𝜑} → 𝜒) ↔ ((𝑥 ∈ 𝐴 ∧ 𝜓) → 𝜒))
4 impexp 456 . . 3 (((𝑥 ∈ 𝐴 ∧ 𝜓) → 𝜒) ↔ (𝑥 ∈ 𝐴 → (𝜓 → 𝜒)))
53, 4bitri 278 . 2 ((𝑥 ∈ {𝑦 ∈ 𝐴 ∣ 𝜑} → 𝜒) ↔ (𝑥 ∈ 𝐴 → (𝜓 → 𝜒)))
65ralbii2 3104 1 (∀𝑥 ∈ {𝑦 ∈ 𝐴 ∣ 𝜑}𝜒 ↔ ∀𝑥 ∈ 𝐴 (𝜓 → 𝜒))
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   ↔ wb 209   ∧ wa 401   ∈ wcel 2144  ∀wral 3076  {crab 3412
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1827  ax-4 1841  ax-5 1942  ax-6 1999  ax-7 2040  ax-8 2146  ax-9 2154  ax-ext 2732
This proof depends on definitions:  df-bi 210  df-an 402  df-tru 1572  df-ex 1812  df-sb 2099  df-clab 2739  df-cleq 2752  df-clel 2835  df-ral 3077  df-rab 3413  df-v 3452
This theorem is used by:  frminex  5630  wereu2  5648  frpomin  6346  weniso  7368  zmin  13078  prmreclem1  17103  lublecllem  18541  mgmhmeql  18914  mhmeql  19031  ghmeql  19462  pgpfac1lem5  20304  lmhmeql  21339  rspprop  21533  islindf4  22153  1stcfb  23772  fbssfi  24165  filssufilg  24239  txflf  24334  ptcmplem3  24382  symgtgp  24434  tgpconncompeqg  24440  cnllycmp  25286  ovolgelb  25810  dyadmax  25928  lhop1  26343  radcnvlt1  26754  noextenddif  28034  conway  28174  madebdaylemlrcut  28294  oncutlt  28659  oniso  28666  bdayons  28671  bdayn0p1  28764  poimirlem4  38679  poimirlem32  38707  ismblfin  38716  igenval2  39137  glbconN  40571  nadd2rabtr  44523  isubgruhgr  49102  intubeu  50234  unilbeu  50235
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