fact: Definition isequiv_oD_to_O_modality `{Funext} (O : Modality) {A : Type} (B : O A -> Type) `{forall a, In O (B a)} : IsEquiv (fun (h : forall oa, B oa) => h oD to O A).
imports: HoTT.Basics HoTT.Types HFiber Extensions Factorization Limits.Pullback ReflectiveSubuniverse