Theorem a9ev 1743

Description: At least one individual exists. Weaker version of a9e 1742. (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 1576	1 |- E. x x = y

Syntax hints:   E.wex 1538

This theorem was proved from axioms:  ax-i9 1576

This theorem is referenced by:  spimfv  1745  ax6evr  1751  equsalv  1839  dfdif3  3314  snnex  4539  relop  4872  dmi  4938