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[< 0 > + < 1 > * < 2 >]
: nat
[< b > + < b > * < 2 >]
: nat
[<< # 0 >>]
: option nat
[1 {f 1}]
: Expr
fun (x : nat) (y z : Expr) => [1 + y z + {f x}]
: nat -> Expr -> Expr -> Expr
fun e : Expr =>
match e with
| [x y + z] => [x + y z]
| [1 + 1] => [1]
| _ => [e + e]
end
: Expr -> Expr
[(1 + 1)]
: Expr
|
