9 lines
163 B
Text
9 lines
163 B
Text
import data.int
|
||
open int
|
||
|
||
theorem has_decidable_eq [instance] [protected] : decidable_eq ℤ :=
|
||
take (a b : ℤ), _
|
||
|
||
variable n : nat
|
||
variable i : int
|
||
check n + i
|