Metamath Proof Explorer

Theorem 3ex

Description: The number 3 is a set. (Contributed by David A. Wheeler, 8-Dec-2018)

Ref Expression
Assertion 3ex 
|- 3 e. _V

Proof

Step Hyp Ref Expression
1 3cn 
 |-  3 e. CC
2 1 elexi 
 |-  3 e. _V