fact: Definition is_preinitial_sec (X : algebra_ob F) : UU := ∏ (Y : fibered_alg X), algebra_section Y.
imports: UniMath.Foundations.PartA UniMath.Foundations.UnivalenceAxiom UniMath.MoreFoundations.Univalence UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Functors UniMath.Induction.FunctorAlgebras_legacy UniMath.Induction.PolynomialFunctors UniMath.Induction.W.Core