Theorem a9ev 1749

Description: At least one individual exists. Weaker version of a9e 1748. (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 1583	1 |- E. x x = y

Syntax hints:   E.wex 1545

This theorem was proved from axioms:  ax-i9 1583

This theorem is referenced by:  spimfv  1751  ax6evr  1757  equsalv  1846  equsv  1938  dfdif3  3339  snnex  4592  relop  4928  dmi  4994