Theorem a9ev 1697

Description: At least one individual exists. Weaker version of a9e 1696. (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 1530	1 |- E. x x = y

Syntax hints:   E.wex 1492

This theorem was proved from axioms:  ax-i9 1530

This theorem is referenced by:  spimfv  1699  ax6evr  1705  equsalv  1793  dfdif3  3247  snnex  4450  relop  4779  dmi  4844