fact: Definition list_rect_In {A} (P : list A -> Type) (ls : list A) (Hnil : P nil) (Hcons : forall x xs, In x ls -> P xs -> P (x::xs)) : P ls.
imports: Fiat.Common.Coq__8_4__8_5__Compat Coq.ZArith.ZArith Coq.Lists.List Coq.Lists.SetoidList Coq.Bool.Bool Fiat.Common Fiat.Common.List.Operations Fiat.Common.Equality Fiat.Common.List.FlattenList Fiat.Common.LogicFacts