Theorem elexi 2868

Description: If a class is a member of another class, it is a set. (Contributed by NM, 11-Jun-1994.)

Hypothesis

Ref	Expression
elisseti.1	|- A e. B

Assertion

Ref	Expression
elexi	|- A e. _V

Proof of Theorem elexi

Step	Hyp	Ref	Expression
1		elisseti.1	. 2 |- A e. B
2		elex 2867	. 2 |- (A e. B -> A e. _V)
3	1, 2	ax-mp 5	1 |- A e. _V

Syntax hints:   e. wcel 1710  _Vcvv 2859

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1546  ax-5 1557  ax-17 1616  ax-9 1654  ax-8 1675  ax-11 1746  ax-ext 2334

This theorem depends on definitions:  df-bi 177  df-an 360  df-ex 1542  df-sb 1649  df-clab 2340  df-cleq 2346  df-clel 2349  df-v 2861

This theorem is referenced by:  caovmo  5645  spacvallem1  6281  nchoicelem16  6304