Theorem rabex2 4282

Description: Separation Scheme in terms of a restricted class abstraction. (Contributed by AV, 16-Jul-2019.) (Revised by AV, 26-Mar-2021.)

Hypotheses

Ref	Expression
rabex2.1	⊢ 𝐵 = {𝑥 ∈ 𝐴 ∣ 𝜓}
rabex2.2	⊢ 𝐴 ∈ V

Assertion

Ref	Expression
rabex2	⊢ 𝐵 ∈ V

Distinct variable group:   𝑥,𝐴

Allowed substitution hints:   𝜓(𝑥)   𝐵(𝑥)

Proof of Theorem rabex2

Step	Hyp	Ref	Expression
1		rabex2.2	. 2 ⊢ 𝐴 ∈ V
2		rabex2.1	. . 3 ⊢ 𝐵 = {𝑥 ∈ 𝐴 ∣ 𝜓}
3		id 19	. . 3 ⊢ (𝐴 ∈ V → 𝐴 ∈ V)
4	2, 3	rabexd 4281	. 2 ⊢ (𝐴 ∈ V → 𝐵 ∈ V)
5	1, 4	ax-mp 5	1 ⊢ 𝐵 ∈ V

This proof depends on syntax axioms:   = wceq 1402   ∈ wcel 2209  {crab 2532  Vcvv 2821

This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-ext 2220  ax-sep 4249

This proof depends on definitions:  df-bi 117  df-tru 1405  df-nf 1514  df-sb 1816  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-rab 2537  df-v 2823  df-in 3226  df-ss 3233

This theorem is used by:  rab2ex  4283