fact: Definition TOSubset_plus_point_rel {X:hSet} (S:TOSubset X) (z:X) (nSz : ¬ S z) : hrel (carrier_subset (subtype_plus S z)).
imports: UniMath.MoreFoundations.DecidablePropositions UniMath.MoreFoundations.Propositions UniMath.MoreFoundations.Subtypes UniMath.MoreFoundations.Sets UniMath.MoreFoundations.AxiomOfChoice UniMath.Combinatorics.OrderedSets