# Library Coq.Numbers.Natural.Abstract.NAddOrder

Require Export NOrder.
Module NAddOrderProp (Import N : NAxiomsMiniSig').
Include NOrderProp N.
Theorems true for natural numbers, not for integers
Theorem le_add_r : forall n m, n <= n + m.
Theorem lt_lt_add_r : forall n m p, n < m -> n < m + p.
Theorem lt_lt_add_l : forall n m p, n < m -> n < p + m.
Theorem add_pos_l : forall n m, 0 < n -> 0 < n + m.
Theorem add_pos_r : forall n m, 0 < m -> 0 < n + m.
End NAddOrderProp.