Metamath Proof Explorer


Theorem zefldiv2ALTV

Description: The floor of an even number divided by 2 is equal to the even number divided by 2. (Contributed by AV, 7-Jun-2020) (Revised by AV, 18-Jun-2020)

Ref Expression
Assertion zefldiv2ALTV N Even N 2 = N 2

Proof

Step Hyp Ref Expression
1 evendiv2z N Even N 2
2 flid N 2 N 2 = N 2
3 1 2 syl N Even N 2 = N 2