7 lines
No EOL
127 B
Text
7 lines
No EOL
127 B
Text
import standard
|
|
using bool
|
|
|
|
definition set {{T : Type}} := T → bool
|
|
infix `∈`:50 := λx A, A x = tt
|
|
|
|
check 1 ∈ (λ x, tt) |