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Theorem rabssdv 4027
Description: Subclass of a restricted class abstraction (deduction form). (Contributed by NM, 2-Feb-2015.)
Hypothesis
Ref Expression
rabssdv.1 ((𝜑𝑥𝐴𝜓) → 𝑥𝐵)
Assertion
Ref Expression
rabssdv (𝜑 → {𝑥𝐴𝜓} ⊆ 𝐵)
Distinct variable groups:   𝑥,𝐵   𝜑,𝑥
Allowed substitution hints:   𝜓(𝑥)   𝐴(𝑥)

Proof of Theorem rabssdv
StepHypRef Expression
1 rabssdv.1 . . . 4 ((𝜑𝑥𝐴𝜓) → 𝑥𝐵)
213exp 1136 . . 3 (𝜑 → (𝑥𝐴 → (𝜓𝑥𝐵)))
32ralrimiv 3155 . 2 (𝜑 → ∀𝑥𝐴 (𝜓𝑥𝐵))
4 rabss 4023 . 2 ({𝑥𝐴𝜓} ⊆ 𝐵 ↔ ∀𝑥𝐴 (𝜓𝑥𝐵))
53, 4sylibr 237 1 (𝜑 → {𝑥𝐴𝜓} ⊆ 𝐵)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:  wi 4  w3a 1102  wcel 2142  wral 3078  {crab 3415  wss 3904
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1824  ax-4 1838  ax-5 1939  ax-6 1996  ax-7 2037  ax-8 2144  ax-9 2152  ax-10 2175  ax-11 2191  ax-12 2212  ax-ext 2734
This proof depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3an 1104  df-tru 1572  df-ex 1809  df-nf 1813  df-sb 2096  df-clab 2741  df-cleq 2754  df-clel 2837  df-nfc 2911  df-ral 3079  df-rab 3416  df-ss 3921
This theorem is used by:  suppss2  8194  oemapvali  9651  cantnflem1  9656  harval2  9990  zsupss  12967  ramub1lem1  17092  symggen  19546  efgsfo  19815  ablfacrp  20144  ablfac1eu  20151  pgpfac1lem5  20157  ablfaclem3  20165  nrmr0reg  23917  ptcmplem3  24222  abelthlem2  26606  lgamgulmlem1  27204  ltonold  28465  onsfi  28560  rspectopn  34266  fineqvnttrclselem1  35542  neibastop2lem  36899  topmeet  36903  weiunse  37007  cntotbnd  38475  mapdrvallem2  42447  aks6d1c6lem3  42967  onintunirab  43982  nadd2rabex  44141  k0004ss1  44905  liminfvalxr  46525
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