fact: Definition extract_ord_preord A : PreOrder (@extract_ord A) := proj2_sig (dsnd A).
imports: Coq(ssreflect ssrfun ssrbool) Coq(FunctionalExtensionality) Coq(Relation_Definitions Morphisms RelationPairs) Mon(SPropBase SPropMonadicStructures) Relational(OrderEnrichedCategory Rel)