Module Type ZGcdProp
(Import A : ZAxiomsSig')
(Import B : ZMulOrderProp A)
(Import C : ZSgnAbsProp A B).
Include NZGcdProp A A B.
(** Results concerning divisibility*)

Lemma divide_sub_r : forall n m p, (n | m) -> (n | p) -> (n | m - p).