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Theorem sbcan 3768
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 3726 . 2 ([𝐴 / 𝑥](𝜑𝜓) → 𝐴 ∈ V)
2 sbcex 3726 . . 3 ([𝐴 / 𝑥]𝜓𝐴 ∈ V)
32adantl 482 . 2 (([𝐴 / 𝑥]𝜑[𝐴 / 𝑥]𝜓) → 𝐴 ∈ V)
4 dfsbcq2 3719 . . 3 (𝑦 = 𝐴 → ([𝑦 / 𝑥](𝜑𝜓) ↔ [𝐴 / 𝑥](𝜑𝜓)))
5 dfsbcq2 3719 . . . 4 (𝑦 = 𝐴 → ([𝑦 / 𝑥]𝜑[𝐴 / 𝑥]𝜑))
6 dfsbcq2 3719 . . . 4 (𝑦 = 𝐴 → ([𝑦 / 𝑥]𝜓[𝐴 / 𝑥]𝜓))
75, 6anbi12d 631 . . 3 (𝑦 = 𝐴 → (([𝑦 / 𝑥]𝜑 ∧ [𝑦 / 𝑥]𝜓) ↔ ([𝐴 / 𝑥]𝜑[𝐴 / 𝑥]𝜓)))
8 sban 2083 . . 3 ([𝑦 / 𝑥](𝜑𝜓) ↔ ([𝑦 / 𝑥]𝜑 ∧ [𝑦 / 𝑥]𝜓))
94, 7, 8vtoclbg 3507 . 2 (𝐴 ∈ V → ([𝐴 / 𝑥](𝜑𝜓) ↔ ([𝐴 / 𝑥]𝜑[𝐴 / 𝑥]𝜓)))
101, 3, 9pm5.21nii 380 1 ([𝐴 / 𝑥](𝜑𝜓) ↔ ([𝐴 / 𝑥]𝜑[𝐴 / 𝑥]𝜓))
Colors of variables: wff setvar class
Syntax hints:  wb 205  wa 396   = wceq 1539  [wsb 2067  wcel 2106  Vcvv 3432  [wsbc 3716
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1798  ax-4 1812  ax-5 1913  ax-6 1971  ax-7 2011  ax-8 2108  ax-9 2116  ax-ext 2709
This theorem depends on definitions:  df-bi 206  df-an 397  df-tru 1542  df-ex 1783  df-sb 2068  df-clab 2716  df-cleq 2730  df-clel 2816  df-v 3434  df-sbc 3717
This theorem is referenced by:  sbc3an  3786  sbcabel  3811  2nreu  4375  csbopg  4822  csbuni  4870  csbmpt12  5470  csbxp  5686  difopab  5740  sbcfung  6458  sbcfng  6597  sbcfg  6598  fmptsnd  7041  csbfrecsg  8100  f1od2  31056  esum2dlem  32060  bnj976  32757  bnj110  32838  bnj1040  32952  csboprabg  35501  csbmpo123  35502  f1omptsnlem  35507  mptsnunlem  35509  relowlpssretop  35535  csbfinxpg  35559  sbcani  36266  sbccom2lem  36282  minregex  41141  brtrclfv2  41335  cotrclrcl  41350  frege124d  41369  sbiota1  42052  onfrALTlem5  42162  onfrALTlem4  42163  csbingVD  42504  onfrALTlem5VD  42505  onfrALTlem4VD  42506  csbxpgVD  42514  csbunigVD  42518
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