Metamath Proof Explorer


Theorem scottex2OLD

Description: Obsolete version of scottex as of 18-Jul-2026. (Contributed by Rohan Ridenour, 9-Aug-2023) (Proof modification is discouraged.) (New usage is discouraged.)

Ref Expression
Assertion scottex2OLD ⊢ Scott A ∈ V

Proof

Step Hyp Ref Expression
1 df-scott ⊢ Scott A = x ∈ A | ∀ y ∈ A rank ⁡ x ⊆ rank ⁡ y
2 scottexOLD ⊢ x ∈ A | ∀ y ∈ A rank ⁡ x ⊆ rank ⁡ y ∈ V
3 1 2 eqeltri ⊢ Scott A ∈ V