fact: Definition least_suchthat_is_least {A : P -> UU} (x : least_suchthat A) : ∏ y, A y -> x ≤ y.
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.Combinatorics.WellOrderedSets UniMath.OrderTheory.DCPOs.AlternativeDefinitions.Dcpo