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Theorem elrab3 2964
Description: Membership in a restricted class abstraction, using implicit substitution. (Contributed by NM, 5-Oct-2006.)
Hypothesis
Ref Expression
elrab.1 (𝑥 = 𝐴 → (𝜑𝜓))
Assertion
Ref Expression
elrab3 (𝐴𝐵 → (𝐴 ∈ {𝑥𝐵𝜑} ↔ 𝜓))
Distinct variable groups:   𝜓,𝑥   𝑥,𝐴   𝑥,𝐵
Allowed substitution hint:   𝜑(𝑥)

Proof of Theorem elrab3
StepHypRef Expression
1 elrab.1 . . 3 (𝑥 = 𝐴 → (𝜑𝜓))
21elrab 2963 . 2 (𝐴 ∈ {𝑥𝐵𝜑} ↔ (𝐴𝐵𝜓))
32baib 927 1 (𝐴𝐵 → (𝐴 ∈ {𝑥𝐵𝜑} ↔ 𝜓))
Colors of variables: wff set class
Syntax hints:  wi 4  wb 105   = wceq 1398  wcel 2202  {crab 2515
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-ext 2213
This theorem depends on definitions:  df-bi 117  df-tru 1401  df-nf 1510  df-sb 1811  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2364  df-rab 2520  df-v 2805
This theorem is referenced by:  unimax  3932  undifexmid  4289  frind  4455  ordtriexmidlem2  4624  ordtriexmid  4625  ontriexmidim  4626  ordtri2orexmid  4627  onsucelsucexmid  4634  0elsucexmid  4669  ordpwsucexmid  4674  ordtri2or2exmid  4675  ontri2orexmidim  4676  canth  5979  acexmidlema  6019  acexmidlemb  6020  isnumi  7429  genpelvl  7775  genpelvu  7776  cauappcvgprlemladdru  7919  cauappcvgprlem1  7922  caucvgprlem1  7942  sup3exmid  9179  supinfneg  9873  infsupneg  9874  supminfex  9875  ublbneg  9891  negm  9893  infssuzex  10539  hashinfuni  11085  gcddvds  12597  dvdslegcd  12598  bezoutlemsup  12643  uzwodc  12671  lcmval  12698  dvdslcm  12704  isprm2lem  12751  eupth2lem3lem3fi  16394  eupth2lem3lem6fi  16395  eupth2lem3lem4fi  16397
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