Metamath Proof Explorer

Theorem z2even

Description: 2 divides 2. That means 2 is even. (Contributed by AV, 12-Feb-2020) (Revised by AV, 23-Jun-2021)

Ref Expression
Assertion z2even 
|- 2 || 2

Proof

Step Hyp Ref Expression
1 2z 
 |-  2 e. ZZ
2 iddvds 
 |-  ( 2 e. ZZ -> 2 || 2 )
3 1 2 ax-mp 
 |-  2 || 2