fact: Definition to_listset (X : @set_type _ mset) : @set_type _ (listset elt) := props.to_list X↾elements_spec2w X.
imports: Coq.MSets.MSetInterface Coq.MSets.MSetFacts Coq.MSets.MSetProperties MathClasses.implementations.list MathClasses.implementations.list_finite_set MathClasses.theory.finite_sets MathClasses.interfaces.finite_sets MathClasses.interfaces.orders MathClasses.interfaces.abstract_algebra