fact: Definition Tarski_fixpoint_theorem_statement := forall (P:Poset) (P_complete : is_complete P) (f : posetmorphism P P), is_complete (Fixedpoint f : Subposet P).
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.Combinatorics.WellOrderedSets UniMath.OrderTheory.DCPOs.AlternativeDefinitions.Dcpo