fact: Definition QposEq (a b:Qpos) := Qeq (proj1_sig a) (proj1_sig b).
imports: Coq.Logic.Eqdep_dec Coq.QArith.QArith Coq.QArith.Qabs Coq.QArith.Qpower Coq.QArith.Qround CoRN.model.totalorder.QMinMax CoRN.order.TotalOrder