Theorem domrefg

Description: Dominance is reflexive. (Contributed by NM, 18-Jun-1998)

	Ref	Expression
Assertion	domrefg	|- ( A e. V -> A ~<_ A )

Proof

Step	Hyp	Ref	Expression
1		enrefg	|- ( A e. V -> A ~~ A )
2		endom	|- ( A ~~ A -> A ~<_ A )
3	1 2	syl	|- ( A e. V -> A ~<_ A )