Data.Type.Natural.Class.Order
class PeanoOrder nat
data DiffNat n m
data LeqView n m
type family FlipOrdering (a :: Ordering) :: Ordering where ...
sFlipOrdering
coerceLeqL
coerceLeqR
sLeqCongL
sLeqCongR
sLeqCong
type n :-. m
(%:-.)
minPlusTruncMinus
truncMinusLeq