import Data.List (intercalate)
import Data.Vector.Fixed (
+ (!),
N1,
N2,
N3,
zipWith
)
import Data.Vector.Fixed.Boxed (Vec)
-import Data.Vector.Fixed.Internal (Arity, arity)
+import Data.Vector.Fixed.Internal.Arity (Arity, arity)
import Linear.Vector
import Normed