Theorem nvelOLD

Description: Obsolete proof of nvel , obsolete as of 1-May-2026. (Contributed by FL, 31-Dec-2006) (Proof modification is discouraged.) (New usage is discouraged.)

	Ref	Expression
Assertion	nvelOLD	⊢ ¬ V ∈ 𝐴

Proof

Step	Hyp	Ref	Expression
1		vprc	⊢ ¬ V ∈ V
2		elex	⊢ ( V ∈ 𝐴 → V ∈ V )
3	1 2	mto	⊢ ¬ V ∈ 𝐴