fact: Definition TOeq_to_refl_1 {X:hSet} (S : TOSubset X) : ∀ s t : carrier_subset S, pr1 s = pr1 t ⇒ s ≤ t.
imports: UniMath.MoreFoundations.DecidablePropositions UniMath.MoreFoundations.Propositions UniMath.MoreFoundations.Subtypes UniMath.MoreFoundations.Sets UniMath.MoreFoundations.AxiomOfChoice UniMath.Combinatorics.OrderedSets