fact: Definition idsigmaidsigma {A : UU} {B : A → UU} (c_1 c_2: total2 B) (e : c_1 = c_2) : sigmaidtoidsigma c_1 c_2 (idsigmatosigmaid c_1 c_2 e) = e.
imports: UniMath.Foundations.All UniMath.Induction.PolynomialFunctors UniMath.CategoryTheory.Core.Functors UniMath.Induction.FunctorAlgebras_legacy