Theorem rabex2 4194

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 4193	. 2 ⊢ (𝐴 ∈ V → 𝐵 ∈ V)
5	1, 4	ax-mp 5	1 ⊢ 𝐵 ∈ V

Syntax hints:   = wceq 1373   ∈ wcel 2177  {crab 2489  Vcvv 2773

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 711  ax-5 1471  ax-7 1472  ax-gen 1473  ax-ie1 1517  ax-ie2 1518  ax-8 1528  ax-10 1529  ax-11 1530  ax-i12 1531  ax-bndl 1533  ax-4 1534  ax-17 1550  ax-i9 1554  ax-ial 1558  ax-i5r 1559  ax-ext 2188  ax-sep 4166

This theorem depends on definitions:  df-bi 117  df-tru 1376  df-nf 1485  df-sb 1787  df-clab 2193  df-cleq 2199  df-clel 2202  df-nfc 2338  df-rab 2494  df-v 2775  df-in 3173  df-ss 3180

This theorem is referenced by:  rab2ex  4195