Theorem a9ev 1676

Description: At least one individual exists. Weaker version of a9e 1675. (Contributed by NM, 3-Aug-2017.)

Assertion

Ref	Expression
a9ev	|- E. x x = y

Distinct variable group:   x, y

Proof of Theorem a9ev

Step	Hyp	Ref	Expression
1		ax-i9 1511	1 |- E. x x = y

Syntax hints:   E.wex 1469

This theorem was proved from axioms:  ax-i9 1511

This theorem is referenced by:  ax6evr  1682  dfdif3  3191  snnex  4377  relop  4697  dmi  4762