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Theorem sbcan 3763
Description: Distribution of class substitution over conjunction. (Contributed by NM, 31-Dec-2016.) (Revised by NM, 17-Aug-2018.)
Assertion
Ref Expression
sbcan ([𝐴 / 𝑥](𝜑𝜓) ↔ ([𝐴 / 𝑥]𝜑[𝐴 / 𝑥]𝜓))

Proof of Theorem sbcan
Dummy variable 𝑦 is distinct from all other variables.
StepHypRef Expression
1 sbcex 3721 . 2 ([𝐴 / 𝑥](𝜑𝜓) → 𝐴 ∈ V)
2 sbcex 3721 . . 3 ([𝐴 / 𝑥]𝜓𝐴 ∈ V)
32adantl 481 . 2 (([𝐴 / 𝑥]𝜑[𝐴 / 𝑥]𝜓) → 𝐴 ∈ V)
4 dfsbcq2 3714 . . 3 (𝑦 = 𝐴 → ([𝑦 / 𝑥](𝜑𝜓) ↔ [𝐴 / 𝑥](𝜑𝜓)))
5 dfsbcq2 3714 . . . 4 (𝑦 = 𝐴 → ([𝑦 / 𝑥]𝜑[𝐴 / 𝑥]𝜑))
6 dfsbcq2 3714 . . . 4 (𝑦 = 𝐴 → ([𝑦 / 𝑥]𝜓[𝐴 / 𝑥]𝜓))
75, 6anbi12d 630 . . 3 (𝑦 = 𝐴 → (([𝑦 / 𝑥]𝜑 ∧ [𝑦 / 𝑥]𝜓) ↔ ([𝐴 / 𝑥]𝜑[𝐴 / 𝑥]𝜓)))
8 sban 2084 . . 3 ([𝑦 / 𝑥](𝜑𝜓) ↔ ([𝑦 / 𝑥]𝜑 ∧ [𝑦 / 𝑥]𝜓))
94, 7, 8vtoclbg 3497 . 2 (𝐴 ∈ V → ([𝐴 / 𝑥](𝜑𝜓) ↔ ([𝐴 / 𝑥]𝜑[𝐴 / 𝑥]𝜓)))
101, 3, 9pm5.21nii 379 1 ([𝐴 / 𝑥](𝜑𝜓) ↔ ([𝐴 / 𝑥]𝜑[𝐴 / 𝑥]𝜓))
Colors of variables: wff setvar class
Syntax hints:  wb 205  wa 395   = wceq 1539  [wsb 2068  wcel 2108  Vcvv 3422  [wsbc 3711
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1799  ax-4 1813  ax-5 1914  ax-6 1972  ax-7 2012  ax-8 2110  ax-9 2118  ax-ext 2709
This theorem depends on definitions:  df-bi 206  df-an 396  df-tru 1542  df-ex 1784  df-sb 2069  df-clab 2716  df-cleq 2730  df-clel 2817  df-v 3424  df-sbc 3712
This theorem is referenced by:  sbc3an  3782  sbcabel  3807  2nreu  4372  csbopg  4819  csbuni  4867  csbmpt12  5463  csbxp  5676  difopab  5729  sbcfung  6442  sbcfng  6581  sbcfg  6582  fmptsnd  7023  csbfrecsg  8071  f1od2  30958  esum2dlem  31960  bnj976  32657  bnj110  32738  bnj1040  32852  csboprabg  35428  csbmpo123  35429  f1omptsnlem  35434  mptsnunlem  35436  relowlpssretop  35462  csbfinxpg  35486  sbcani  36193  sbccom2lem  36209  brtrclfv2  41224  cotrclrcl  41239  frege124d  41258  sbiota1  41941  onfrALTlem5  42051  onfrALTlem4  42052  csbingVD  42393  onfrALTlem5VD  42394  onfrALTlem4VD  42395  csbxpgVD  42403  csbunigVD  42407
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