fact: Definition Upw_E (T : Tree) (x : pr11 T) (y z : Upw T x) : hProp := pr121 T (pr1 y) (pr1 z).
imports: UniMath.Foundations.PartB UniMath.Foundations.Propositions UniMath.Foundations.Sets UniMath.Foundations.HLevels UniMath.Combinatorics.WellOrderedSets UniMath.Combinatorics.OrderedSets UniMath.MoreFoundations.DecidablePropositions UniMath.MoreFoundations.Propositions