Theorem 0domgOLD

Description: Obsolete version of 0domg as of 29-Nov-2024. (Contributed by NM, 26-Oct-2003) (Revised by Mario Carneiro, 26-Apr-2015) (Proof modification is discouraged.) (New usage is discouraged.)

	Ref	Expression
Assertion	0domgOLD	$$⊢A\in V\to \varnothing \preccurlyeq A$$

Proof

Step	Hyp	Ref	Expression
1		0ss	$$⊢\varnothing \subseteq A$$
2		ssdomg	$$⊢A\in V\to \left(\varnothing \subseteq A\to \varnothing \preccurlyeq A\right)$$
3	1 2	mpi	$$⊢A\in V\to \varnothing \preccurlyeq A$$