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Theorem elrab3 2963
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 2962 . 2 (𝐴 ∈ {𝑥𝐵𝜑} ↔ (𝐴𝐵𝜓))
32baib 926 1 (𝐴𝐵 → (𝐴 ∈ {𝑥𝐵𝜑} ↔ 𝜓))
Colors of variables: wff set class
Syntax hints:  wi 4  wb 105   = wceq 1397  wcel 2202  {crab 2514
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 716  ax-5 1495  ax-7 1496  ax-gen 1497  ax-ie1 1541  ax-ie2 1542  ax-8 1552  ax-10 1553  ax-11 1554  ax-i12 1555  ax-bndl 1557  ax-4 1558  ax-17 1574  ax-i9 1578  ax-ial 1582  ax-i5r 1583  ax-ext 2213
This theorem depends on definitions:  df-bi 117  df-tru 1400  df-nf 1509  df-sb 1811  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2363  df-rab 2519  df-v 2804
This theorem is referenced by:  unimax  3927  undifexmid  4283  frind  4449  ordtriexmidlem2  4618  ordtriexmid  4619  ontriexmidim  4620  ordtri2orexmid  4621  onsucelsucexmid  4628  0elsucexmid  4663  ordpwsucexmid  4668  ordtri2or2exmid  4669  ontri2orexmidim  4670  canth  5969  acexmidlema  6009  acexmidlemb  6010  isnumi  7386  genpelvl  7732  genpelvu  7733  cauappcvgprlemladdru  7876  cauappcvgprlem1  7879  caucvgprlem1  7899  sup3exmid  9137  supinfneg  9829  infsupneg  9830  supminfex  9831  ublbneg  9847  negm  9849  infssuzex  10494  hashinfuni  11040  gcddvds  12539  dvdslegcd  12540  bezoutlemsup  12585  uzwodc  12613  lcmval  12640  dvdslcm  12646  isprm2lem  12693  eupth2lem3lem3fi  16327  eupth2lem3lem6fi  16328  eupth2lem3lem4fi  16330
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