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Theorem rabssdv 4022
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 3153 . 2 (𝜑 → ∀𝑥𝐴 (𝜓𝑥𝐵))
4 rabss 4018 . 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 3076  {crab 3412  wss 3899
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 2213  ax-ext 2732
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 2739  df-cleq 2752  df-clel 2835  df-nfc 2909  df-ral 3077  df-rab 3413  df-ss 3916
This theorem is used by:  suppss2  8196  oemapvali  9663  cantnflem1  9668  harval2  10035  zsupss  13019  ramub1lem1  17151  symggen  19631  efgsfo  19900  ablfacrp  20229  ablfac1eu  20236  pgpfac1lem5  20242  ablfaclem3  20250  nrmr0reg  24015  ptcmplem3  24320  abelthlem2  26708  lgamgulmlem1  27305  ltonold  28566  onsfi  28661  rspectopn  34418  fineqvnttrclselem1  35708  neibastop2lem  37064  topmeet  37068  weiunse  37172  cntotbnd  38644  mapdrvallem2  42616  aks6d1c6lem3  43136  onintunirab  44166  nadd2rabex  44325  k0004ss1  45089  liminfvalxr  46709
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