Theorem bj-axc11nv

Description: Version of axc11n with a disjoint variable condition; instance of aevlem . TODO: delete after checking surrounding theorems. (Contributed by BJ, 31-May-2019) (Proof modification is discouraged.) (New usage is discouraged.)

	Ref	Expression
Assertion	bj-axc11nv	|- ( A. x x = y -> A. y y = x )

Proof

Step	Hyp	Ref	Expression
1		aevlem	|- ( A. x x = y -> A. y y = x )