fact: Definition RApp_Proper_helper {A B f x} {Hf : Proper (Proper_relation_for (A --> B)) f} {Hx : Proper (Proper_relation_for A) x} : Proper (Proper_relation_for B) (f x).
imports: Coq.Classes.Morphisms Coq.Relations.Relation_Definitions Fiat.Parsers.Reflective.Syntax Fiat.Parsers.Reflective.Semantics Fiat.Common.List.ListMorphisms