Library Coq.NArith.NOrderedType
DecidableType structure for N binary natural numbers
Note that the last module fulfills by subtyping many other
interfaces, such as DecidableType or EqualityType.
OrderedType structure for N numbers
Note that N_as_OT can also be seen as a UsualOrderedType
and a OrderedType (and also as a DecidableType).
An order tactic for N numbers
Note that n_order is domain-agnostic: it will not prove
1<=2 or x<=x+x, but rather things like x<=y -> y<=x -> x=y.