Metamath Proof Explorer


Theorem rabexg

Description: Separation Scheme in terms of a restricted class abstraction. (Contributed by NM, 23-Oct-1999) (Proof shortened by BJ, 24-Jul-2025)

Ref Expression
Assertion rabexg ( 𝐴 ∈ 𝑉 → { 𝑥 ∈ 𝐴 ∣ 𝜑 } ∈ V )

Proof

Step Hyp Ref Expression
1 rabelpw ⊢ ( 𝐴 ∈ 𝑉 → { 𝑥 ∈ 𝐴 ∣ 𝜑 } ∈ 𝒫 𝐴 )
2 1 elexd ⊢ ( 𝐴 ∈ 𝑉 → { 𝑥 ∈ 𝐴 ∣ 𝜑 } ∈ V )