fact: Definition subsetswithbinopconstr {X : setwithbinop} : ∏ (t : hsubtype X), (λ A : hsubtype X, issubsetwithbinop op A) t → ∑ A : hsubtype X, issubsetwithbinop op A := @make_subsetswithbinop X.
imports: UniMath.Foundations.Sets UniMath.MoreFoundations.Propositions