Theorem el2v

Description: If a proposition is implied by x e.V and y e. V (which is true, see vex ), then it is true. (Contributed by Peter Mazsa, 13-Oct-2018)

	Ref	Expression
Hypothesis	el2v.1	|- ( ( x e. _V /\ y e. _V ) -> ph )
Assertion	el2v	|- ph

Proof

Step	Hyp	Ref	Expression
1		el2v.1	|- ( ( x e. _V /\ y e. _V ) -> ph )
2		vex	|- x e. _V
3		vex	|- y e. _V
4	2 3 1	mp2an	|- ph