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Theorem ssralv 3312
Description: Quantification restricted to a subclass. (Contributed by NM, 11-Mar-2006.)
Assertion
Ref Expression
ssralv (𝐴𝐵 → (∀𝑥𝐵 𝜑 → ∀𝑥𝐴 𝜑))
Distinct variable groups:   𝑥,𝐴   𝑥,𝐵
Allowed substitution hint:   𝜑(𝑥)

Proof of Theorem ssralv
StepHypRef Expression
1 ssel 3242 . . 3 (𝐴𝐵 → (𝑥𝐴𝑥𝐵))
21imim1d 75 . 2 (𝐴𝐵 → ((𝑥𝐵𝜑) → (𝑥𝐴𝜑)))
32ralimdv2 2620 1 (𝐴𝐵 → (∀𝑥𝐵 𝜑 → ∀𝑥𝐴 𝜑))
Colors of variables:    wff set class
This proof depends on syntax axioms:  wi 4  wcel 2209  wral 2528  wss 3220
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-11 1559  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-ext 2220
This proof depends on definitions:  df-bi 117  df-nf 1514  df-sb 1816  df-clab 2225  df-cleq 2231  df-clel 2234  df-ral 2533  df-in 3226  df-ss 3233
This theorem is used by:  iinss1  4024  poss  4443  sess2  4483  trssord  4525  funco  5417  funimaexglem  5464  isores3  6021  isoini2  6025  smores  6563  smores2  6565  tfrlem5  6585  resixp  7015  ac6sfi  7202  difinfinf  7441  peano5nnnn  8259  peano5nni  9307  caucvgre  11747  rexanuz  11754  cau3lem  11880  isumclim3  12190  fsumiun  12244  pcfac  13129  ctinf  13321  strsetsid  13385  imasaddfnlemg  13635  tgcn  15309  tgcnp  15310  cnss2  15328  cncnp  15331  sslm  15348  metrest  15607  rescncf  15682  suplociccex  15726  limcresi  15767  uspgr2wlkeq  16606  nninfsellemeq  17057
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