fact: Definition hsubtype_to_preZFS_Branch_hsubtype (T : preZFS) (x : T) (S : hsubtype (pr111 T)) : hsubtype (pr11 (preZFS_Branch T x)) := λ z, S (pr1 z) ∧ Ed T x (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