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Theorem ralrab 3655
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 3648 . . . 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 3108 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 2147  ∀wral 3080  {crab 3416
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-tru 1573  df-ex 1813  df-sb 2102  df-clab 2742  df-cleq 2755  df-clel 2839  df-ral 3081  df-rab 3417  df-v 3456
This theorem is used by:  frminex  5637  wereu2  5655  frpomin  6369  weniso  7395  zmin  13111  prmreclem1  17138  lublecllem  18582  mgmhmeql  18955  mhmeql  19072  ghmeql  19503  pgpfac1lem5  20346  lmhmeql  21381  rspprop  21575  islindf4  22199  1stcfb  23818  fbssfi  24211  filssufilg  24285  txflf  24380  ptcmplem3  24428  symgtgp  24480  tgpconncompeqg  24486  cnllycmp  25332  ovolgelb  25856  dyadmax  25974  lhop1  26389  radcnvlt1  26802  noextenddif  28082  conway  28222  madebdaylemlrcut  28342  oncutlt  28707  oniso  28714  bdayons  28719  bdayn0p1  28812  poimirlem4  38810  poimirlem32  38838  ismblfin  38847  igenval2  39266  glbconN  40700  nadd2rabtr  44647  isubgruhgr  49239  intubeu  50429  unilbeu  50430
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