{X : Type} (f : X -> X) : Splitting f -> IsIdempotent f := (equiv_split_idem_retract (splitting_retractof_isqidem f))^-1.
Require Import HoTT.Basics HoTT.Types. Require Import HFiber Constant. Require Import Truncations.Core Modalities.Modality. Require Import Homotopy.IdentitySystems.