Definition maybe_mu : maybe_functor ∙ maybe_functor ⟹ maybe_functor := coproduct_nat_trans C C co (constant_functor C C o) maybe_functor maybe_functor (coproduct_nat_trans_in1 C C co (constant_functor C C o) (functor_identity C)) (nat_trans_id maybe_functor).
Require Import UniMath.Foundations.PartD. Require Import UniMath.Foundations.Propositions. Require Import UniMath.Foundations.Sets. Require Import UniMath.MoreFoundations.Tactics. Require Import UniMath.CategoryTheory.Core.Categories. Require Import UniMath.CategoryTheory.Core.Isos. Require Import UniMath.CategoryTheory.Core.Functors. Require Import UniMath.CategoryTheory.Core.NaturalTransformations. Require Import UniMath.CategoryTheory.Monads.Monads. Require Import UniMath.CategoryTheory.Limits.BinCoproducts. Require Import UniMath.CategoryTheory.PrecategoryBinProduct. Require Import UniMath.CategoryTheory.whiskering. Require Import UniMath.CategoryTheory.Monads.LModules.