fact: Definition OrderedSet_istotal {X:OrderedSet} (x y:X): x ≤ y ∨ y ≤ x := pr2 X x y.
imports: UniMath.Combinatorics.FiniteSets UniMath.Foundations.UnivalenceAxiom UniMath.MoreFoundations.Tactics UniMath.MoreFoundations.DecidablePropositions