proposition: Lemma range_full {A B : Type} (f : A -> B) (U : Ensemble A) : range f U Full_set.
proof: Proof. intros ?; constructor. Qed.
imports: Coq(ClassicalChoice Description Program.Subset) ZornsLemma(DecidableDec EnsemblesImplicit Families FunctionProperties Image InverseImage Powerset_facts Proj1SigInjective) Coq(RelationClasses)