fact: Definition is_least_suchthat (A : P -> hProp) (x : P) : hProp := (A x) ∧ (islowerbound_subtype A x).
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.Combinatorics.WellOrderedSets UniMath.OrderTheory.DCPOs.AlternativeDefinitions.Dcpo