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Theorem rabssdv 4025
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 1137 . . 3 (𝜑 → (𝑥𝐴 → (𝜓𝑥𝐵)))
32ralrimiv 3155 . 2 (𝜑 → ∀𝑥𝐴 (𝜓𝑥𝐵))
4 rabss 4021 . 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 1103  wcel 2145  wral 3078  {crab 3414  wss 3902
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 2147  ax-9 2155  ax-10 2178  ax-11 2194  ax-12 2215  ax-ext 2734
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-ex 1813  df-nf 1817  df-sb 2100  df-clab 2741  df-cleq 2754  df-clel 2837  df-nfc 2911  df-ral 3079  df-rab 3415  df-ss 3919
This theorem is used by:  suppss2  8201  oemapvali  9666  cantnflem1  9671  harval2  10005  zsupss  12989  ramub1lem1  17122  symggen  19598  efgsfo  19867  ablfacrp  20196  ablfac1eu  20203  pgpfac1lem5  20209  ablfaclem3  20217  nrmr0reg  23976  ptcmplem3  24281  abelthlem2  26665  lgamgulmlem1  27263  ltonold  28524  onsfi  28619  rspectopn  34364  fineqvnttrclselem1  35634  neibastop2lem  36966  topmeet  36970  weiunse  37074  cntotbnd  38533  mapdrvallem2  42505  aks6d1c6lem3  43025  onintunirab  44055  nadd2rabex  44214  k0004ss1  44978  liminfvalxr  46598
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