fact: Definition isatree (G : TRRGraph) : UU := ∏ (x : pr1 G) (y z : DownwardClosure x), antisymmetric (pr1 y) (pr1 z) × total (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